反射

package com.bestpay.test;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

/**
 * Created by Administrator on 2016/4/22.
 */
public class TestMethodReflect {
    public static final String ID = "Id";
    public static final String NAME = "Name";
    public static final String DESCRIPTION = "Description";

    //方法名集合
    public static final String[] ALL = { ID, NAME, DESCRIPTION };

    //这是测试数据
    public static final String[] MODELDATA = { "1", "Gavin",
            "this is model's test data" };


    public static void main(String[] args) throws Exception{
        try {
            //获得Model类
            Class model = Class.forName("test.Model");
            //获得Model类的实例
            Object object = model.newInstance();
            for (int i = 0; i < ALL.length; i++) {
                //获得Model类的set方法，参数为String类型
                Method setMethod = model.getMethod("set" + ALL[i], String.class);
                //调用set方法
                setMethod.invoke(object, MODELDATA[i]);

                //获得Model类的get方法，无参数
                Method getMethod = model.getMethod("get" + ALL[i], null);
                //调用get方法，并输出数据
                System.out.println(getMethod.invoke(object, null));
            }
        } catch (ClassNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (SecurityException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (NoSuchMethodException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IllegalArgumentException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IllegalAccessException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (InvocationTargetException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (InstantiationException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

    }
}

package com.bestpay.test;

/**
 * Created by Administrator on 2016/4/22.
 */
public class Model {
    private String id;
    private String name;
    private String description;

    public Model() {
        id = "id";
        name = "name";
        description = "description";
    }

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getDescription() {
        return description;
    }

    public void setDescription(String description) {
        this.description = description;
    }

}