如何使用反射API对对象调用方法?

以下是一种方法:

Object yourObject = ...;
Class clazz = yourObject.getClass();
Method setter = clazz.getMethod("setString", String.class); // You need to specify the parameter types
Object[] params = new Object[]{"New String"};
setter.invoke(this, params); // 'this' represents the class from were you calling that method.
// If you have a static method you can pass 'null' instead.

你有一个很好的教程 HERE .

查看 Reflection Trail .

你可以这样做,

Class cls = obj.getClass();
Method m = cls.getMethod("yourMethod", String.class); // assuming there is a method of signature yourMethod(String x);
m.invoke(obj, "strValue");