Javassist patch utils

Utility for working with Javassist and patching methods.

Features

public String hello() {
    return "Hello world";
}

public String hello(String world, boolean b) {
        return "Hello " + world;
}

Get method signature

 String sign = PatchUtils.getJavaMethodSignature(ctMethod);
// Output: hello(java.lang.String)

Get method by return data type

 CtMethod hello = PatchUtils.getMethodByReturn("hello", "java.lang.String", ctClass);

Get method by parameters

 CtMethod hello = PatchUtils.getMethodByParams("hello", "java.lang.String", ctClass, 
        "java.lang.String", 
        "java.lang.Boolean");

Check if the signature matches

boolean signed = PatchUtils.checkSignature(ctMethod, 
        "java.lang.String", 
        "java.lang.Boolean");

There are also several methods for inserting code and replacing methods.

JPU is an open source project distributed under the Apache License 2.0

The project is in beta. Use at your own risk.