如何使用asm实现try-catch？

Question

我是asm的新手，现在我想在课堂上为每个方法捕获异常，尝试自己实现并通过谷歌搜索，但失败了，谁能为我写一个完整的例子？

       MethodVisitor mv = super.visitMethod(access, name, desc, signature,
                exceptions);
        mv.visitCode();
        Label lTryBlockStart = new Label();
        Label lTryBlockEnd = new Label();
        Label lCatchBlockStart = new Label();
        Label lCatchBlockEnd = new Label();
        // set up try-catch block for RuntimeException
        mv.visitTryCatchBlock(lTryBlockStart, lTryBlockEnd, lCatchBlockStart,
                "java/lang/Exception");
        mv.visitLabel(lTryBlockStart);
        // code to call the method goes here
        // mv.visitVarInsn(ALOAD, 0);
        // mv.visitMethodInsn(Opcodes.INVOKESPECIAL, this.name, name, desc);

        mv.visitLabel(lTryBlockEnd);
        mv.visitJumpInsn(GOTO, lCatchBlockEnd); // when here, no exception was
                                                // thrown, so skip exception
                                                // handler
        mv.visitVarInsn(Opcodes.ALOAD, 0);
        mv.visitFieldInsn(Opcodes.INVOKESPECIAL, this.name, name, desc);
        // exception handler starts here, with RuntimeException stored on the
        // stack
        mv.visitLabel(lCatchBlockStart);
        mv.visitVarInsn(ASTORE, 1); // store the RuntimeException in local
                                    // variable 1
        // here we could for example do e.printStackTrace()
        mv.visitVarInsn(ALOAD, 1); // load it
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Exception",
                "printStackTrace", "()V");

        // exception handler ends here:
        mv.visitLabel(lCatchBlockEnd);
        mv.visitEnd();`

我无法运行这些代码，每次都会抛出一个奇怪的异常