BeanUtils.copyProperties拷贝结构不同类测试

╰+哭是因爲堅強的太久メ 2021-07-24 18:57 342阅读 0赞

**一 先定义两个不同的类**

这两个类的结构是不同的。

1 SysUser

package toolutils;
    
    
    import lombok.AllArgsConstructor;
    import lombok.Builder;
    import lombok.Data;
    import lombok.NoArgsConstructor;
    
    
    import java.io.Serializable;
    import java.util.Date;
    import java.util.List;
    
    
    @Data
    @NoArgsConstructor
    @AllArgsConstructor
    @Builder
    public class SysUser implements Serializable  {
        private String id;
        private String username;
        private Integer age;
        private String password;
        private Integer status;
        private List<SysRole> roles;
        private Date createDate;
        private static final long serialVersionUID = 1L;
    }

2 SysUserVO

package toolutils;
    
    
    import lombok.Data;
    import java.util.Date;
    import java.util.List;
    
    
    @Data
    public class SysUserVO {
    
    
        private String id;
        private String username;
        private Integer age;
        private Integer status;
        private List<SysRole> roles;
        private Date createDate;
        private List<SysResource> resources;
    }

**二 BeanUtils.copyProperties拷贝测试**

/**
    * Copyright (C), 2020-2020, 软件公司
    * FileName: BeanUtilsTest
    * Author:   cakin
    * Date:     2020/5/8
    * Description: 不同结构类拷贝
    */
    package toolutils;
    
    import org.springframework.beans.BeanUtils;
    
    /**
    * @ClassName: BeanUtilsTest
    * @Description: 不同结构类拷贝
    * @Date: 2020/5/8
    * @Author: cakin
    */
    public class BeanUtilsTest {
        
        public static void main( String[] args ) {
            SysUser v = new SysUser();
            v.setId("1258674238592294913");
            v.setUsername("cakin");
            v.setAge(38);
            v.setPassword("75fbae06dcf2eecade95992fbb41eaa2");
            v.setStatus(1);
            SysUserVO vo = new SysUserVO();
            BeanUtils.copyProperties(v, vo);
            System.out.println(vo);
        }
    }

**三 测试结果**

SysUserVO(id=1258674238592294913, username=cakin, age=38, status=1, roles=null, createDate=null, resources=null)

从结果来看，只拷贝字段名称相同的字段。