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import demo2.Calculator;

import demo2.Check;

import java.io.BufferedWriter;

import java.io.FileWriter;

import java.lang.reflect.Method;

public class MainTest2 {

public static void main(String[] arg) throws Exception{

//创建计算器对象

Calculator c = new Calculator();

//获取字节码文件对象

Class cls = c.getClass();

//获取所有方法

Method[] methods = cls.getMethods();

int number = 0;//出现异常的此数

BufferedWriter bw = new BufferedWriter(new FileWriter("bug.txt"));

for(Method method : methods){

//判断方法上是否有Check注解

if(method.isAnnotationPresent(Check.class)){

//有就执行

try{

method.invoke(c);

}

catch (Exception e){

//获取异常，记录到文件

number++;

bw.write(method.getName() + "方法出现异常");

bw.newLine();

bw.write("异常名称：" + e.getCause().getClass().getSimpleName());

bw.newLine();

bw.write("异常原因：" + e.getCause().getMessage());

bw.newLine();

bw.write("------------------------------");

}

}

}

bw.newLine();

bw.write("本次测试一共出现 " + number + " 次异常");

bw.flush();

bw.close();

}

}