class Person {

    public void run(String who){
        System.out.println("Person::run()" + who);
    }
    public void jump(String who){
        System.out.println("Person::jump()" + who);
    }

    public void run(){
        System.out.println("Person::run()");
    }
    public void jump(){
        System.out.println("Person::jump()");
    }
}
 

配置文件：

<?xml version="1.0" encoding="UTF-8"?>
<root>
    <class>
        <className>day2.mode1.Person</className>
        <methodName>jump</methodName>
        <argType>java.lang.String</argType>
        <argValue>李玟</argValue>
    </class>
</root>
 

測試類：

import java.io.File;
import java.lang.reflect.Method;
import org.dom4j.Document;
import org.dom4j.io.SAXReader;
import org.junit.Test;

//使用dom4j和反射技術
public class Demo1 {

    //解析xml文件
    @Test
    public void fanse() throws Exception
    {
        SAXReader saxReader = new SAXReader();
        Document document = saxReader.read(new File("src/day2/mode1/config.xml"));

        String className = document.selectSingleNode("//className").getText();
        String methodName = document.selectSingleNode("//methodName").getText();
        //System.out.println(className + ":" + methodName);

        //反射創建對象並執行方法
        Class clazz = Class.forName(className);
        Method method = clazz.getMethod(methodName,null);
        method.invoke(clazz.newInstance(),null);
    }

       //解析xml文件  參數
        @Test
        public void fanse2() throws Exception
        {
            SAXReader saxReader = new SAXReader();
            Document document = saxReader.read(new File("src/day2/mode1/config.xml"));

            String className = document.selectSingleNode("//className").getText();
            String methodName = document.selectSingleNode("//methodName").getText();
            //System.out.println(className + ":" + methodName);

            //參數

            String argType = document.selectSingleNode("//argType").getText();
            String argValue = document.selectSingleNode("//argValue").getText();
            //反射創建對象並執行方法
            Class clazz = Class.forName(className);
            Method method = clazz.getMethod(methodName,Class.forName(argType));
            method.invoke(clazz.newInstance(),argValue);
        }

}
 

java反射獲取xml元素