JavaReflectionUtil

Core functions

• 简化反射代码,只需要输入参数的值即可，不必输入参数类型和考虑访问权限的问题

• 使用typeOf方法自动处理输入参数的基本类型的装箱和拆箱问题

  例如：

    假如输入参数foo为3，typeOf(foo)为int.class。
    假如输入参数foo为Integer(3), typeOf(foo)为Integer.class
  

• 假如当前类中没有指定参数的Method时，自动向父类中寻找Method

• 支持多参数、数组

DEMO

---

Main.java

// new Instance
ReflectTest test = (ReflectTest) ReflectionUtil.newInstance(ReflectTest.class,
                ReflectionUtil.typeOf(3));
                
// invoke mothod without regard to access right, auto boxing
ReflectionUtil.invokeMethod(test, "setCount", ReflectionUtil.typeOf(Integer.valueOf(7)));

// invoke mothod without regard to access right, no auton boxing
ReflectionUtil.invokeMethod(test, "addCount", ReflectionUtil.typeOf(5));

// invoke mothod which is in super class  
ReflectionUtil.invokeMethod(test, "getBaseCount");

// pass array as parameter
int[] nums = new int[]{1, 2, 3};
ReflectionUtil.invokeMethod(test, "printArray", ReflectionUtil.typeOf(nums));

---

ReflectTest.java

class ReflectTest extends Base{
private int count;
public ReflectTest(int count, int foo) {
    this.count = count;
}

private int addCount(int adder) {
    return count += adder;
}

private int setCount(Integer adder) {
    return count = adder;
}

private void printArray(int[] nums) {
    System.out.print("invoke method printArray, print: ");
    for(int i: nums) {
        System.out.print(i + " ");
    }
}
}	

class Base {
 	Base(){}
 	private int baseCount = -1;
 	private int getBaseCount() {
    	return baseCount;
	}
}

Contribution

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License

Apache Version 2.0