目录

• BeanUtils.copyProperties()参数的赋值顺序
• BeanUtils.copyProperties初体验，及其参数含义解释
  • 用处
  • 案例： 创建一个源类：source
  • 创建一个目标target源类
  • 创建测试类test
  • ignoreProperties参数
  • 案例
  • 案例测试

org.springframework.beans.BeanUtils

org.apache.commons.beanutils.BeanUtils

 private String username;    private String password;    private String email;    public String getUsername() {        return username;    }    public void setUsername(String username) {        this.username = username;    }    public String getPassword() {        return password;    }    public void setPassword(String password) {        this.password = password;    }    public String getEmail() {        return email;    }    public void setEmail(String email) {        this.email = email;    }    @Override    public String toString() {        return "book{" +                "username="" + username + """ +                ", password="" + password + """ +                ", email="" + email + """ +                "}";    }}

 private String username;    private String password;    private String email;    public String getUsername() {        return username;    }    public void setUsername(String username) {        this.username = username;    }    public String getPassword() {        return password;    }    public void setPassword(String password) {        this.password = password;    }    public String getEmail() {        return email;    }    public void setEmail(String email) {        this.email = email;    }    @Override    public String toString() {        return "book{" +                "username="" + username + """ +                ", password="" + password + """ +                ", email="" + email + """ +                "}";    }}

import com.sdqj.system_integration.domain.book;import com.sdqj.system_integration.domain.book2;import org.springframework.beans.BeanUtils;public class test {    public static void main(String[] args) {        book bo=new book();        bo.setEmail("1111");        bo.setPassword("222");        bo.setUsername("333");        book2 bo2=new book2();        BeanUtils.copyProperties(bo,bo2);        System.out.println(bo.toString());        System.out.println(bo2.toString());    }}

import com.sdqj.system_integration.domain.book;import com.sdqj.system_integration.domain.book2;import org.springframework.beans.BeanUtils;public class test {    public static void main(String[] args) {        book bo=new book();        bo.setEmail("1111");        bo.setPassword("222");        bo.setUsername("333");        book2 bo2=new book2();        BeanUtils.copyProperties(bo,bo2,"username","password");        System.out.println(bo.toString());        System.out.println(bo2.toString());    }

 public static void main(String[] args) {        book bo=new book();        bo.setEmail("1111");        bo.setPassword("222");        bo.setUsername("333");        book2 bo2=new book2();        BeanUtils.copyProperties(bo,bo2,book2.class);        System.out.println(bo.toString());        System.out.println(bo2.toString());    }