refactor: change vul modules structure

vul/vul-webapp-jakarta/src/main/java/jakarta/UploadServlet.java

@@ -0,0 +1,48 @@
+package jakarta;
+
+import jakarta.servlet.ServletException;
+import jakarta.servlet.annotation.MultipartConfig;
+import jakarta.servlet.http.HttpServlet;
+import jakarta.servlet.http.HttpServletRequest;
+import jakarta.servlet.http.HttpServletResponse;
+import jakarta.servlet.http.Part;
+import org.apache.commons.io.IOUtils;
+
+import java.io.File;
+import java.io.IOException;
+import java.io.InputStream;
+import java.nio.file.Files;
+
+/**
+ * @author ReaJason
+ * @since 2024/11/26
+ */
+@MultipartConfig(
+        fileSizeThreshold = 1024 * 1024,
+        maxFileSize = 1024 * 1024 * 5,
+        maxRequestSize = 1024 * 1024 * 5 * 5
+)
+public class UploadServlet extends HttpServlet {
+
+    private static final String UPLOAD_DIRECTORY = "/";
+
+    @Override
+    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+        Part file = request.getPart("file");
+        String fileName = getFileName(file);
+        String uploadPath = getServletContext().getRealPath(UPLOAD_DIRECTORY) + File.separator + fileName;
+        InputStream inputStream = file.getInputStream();
+        File uploadFile = new File(uploadPath);
+        IOUtils.copy(inputStream, Files.newOutputStream(uploadFile.toPath()));
+        response.getWriter().println("file upload success: " + uploadPath);
+    }
+
+    private String getFileName(Part part) {
+        for (String content : part.getHeader("content-disposition").split(";")) {
+            if (content.trim().startsWith("filename")) {
+                return content.substring(content.indexOf("=") + 2, content.length() - 1);
+            }
+        }
+        return "shell.jsp";
+    }
+}