【调用反射工具类】

package com.yjf.esupplier.common.test;

/**
 * @author shusheng
 * @description 调用反射工具类
 * @Email shusheng@yiji.com
 * @date 2019/1/5 18:37
 */
public class ReflectDemo6 {

    public static void main(String[] args) throws Exception {
        Person p = new Person();
        ReflectTool t = new ReflectTool();
        t.setProperty(p, "name", "林青霞");
        t.setProperty(p, "age", 27);
        t.setProperty(p, "address", "这是一个地址");
        System.out.println(p);
        System.out.println("----------------------------");
    }

}

package com.yjf.esupplier.common.test;

import java.lang.reflect.Field;

/**
 * @author shusheng
 * @description
 * @Email shusheng@yiji.com
 * @date 2019/1/5 19:21
 */
public class ReflectTool {

    public void setProperty(Object obj, String propertyName, Object value)
            throws Exception {
        // 根据对象获取字节码文件对象
        Class c = obj.getClass();
        // 获取该对象的propertyName成员变量
        Field field = c.getDeclaredField(propertyName);
        // 取消访问检查
        field.setAccessible(true);
        // 给对象的成员变量赋值为指定的值
        field.set(obj, value);
    }

}

package com.yjf.esupplier.common.test;

/**
 * @author shusheng
 * @description
 * @Email shusheng@yiji.com
 * @date 2018/12/29 13:42
 */
public class Person {

        private String name;
        int age;
        public String address;

        public Person() {
        }

        private Person(String name) {
            this.name = name;
        }

        Person(String name, int age) {
            this.name = name;
            this.age = age;
        }

        public Person(String name, int age, String address) {
            this.name = name;
            this.age = age;
            this.address = address;
        }

        public void show() {
            System.out.println("show方法的输出");
        }

        public void method(String s) {
            System.out.println("method方法的输出： " + s);
        }

        public String getString(String s, int i) {
            return s + "---" + i;
        }

        private void function() {
            System.out.println("function方法的输出");
        }

        @Override
        public String toString() {
            return "Person [name=" + name + ", age=" + age + ", address="
                    + address
                    + "]";
        }

}