org.apache.commons.lang3.builder.ToStringBuilder的应用

java开发中你可能需展示类的属性值，把对象记录为日志，调试输出等操作，ToStringBuilder提供简便类转字符串写法。

1、对象默认的toString()：

public class MyBean {
  private Integer id;
  private String name;
  
  public MyBean(Integer id, String name) {
    super();
    this.id = id;
    this.name = name;
  }
  //get set方法
  
  public static void main(String...strings) {
    MyBean myBean = new MyBean(1,"test");
    System.out.println(myBean.toString());
  }
}

输出：com.abc.Test.entity.MyBean@15db9742

重写toString方法：

public class MyBean {
    private Integer id;
    private String name;
    
    public MyBean(Integer id, String name) {
        super();
        this.id = id;
        this.name = name;
    }
    //get set方法
    @Override
    public String toString() {
        return "MyBean [id=" + id + ", name=" + name + "]";
    }
    
    public static void main(String...strings) {
        MyBean myBean = new MyBean(1,"test");
        System.out.println(myBean.toString());
    }
}

输出：MyBean [id=1, name=test]

2、使用ToStringBuilder：

public class MyBean {
    private Integer id;
    private String name;
    
    public MyBean(Integer id, String name) {
        super();
        this.id = id;
        this.name = name;
    }
    //get set方法
    @Override
    public String toString() {
         return ToStringBuilder.reflectionToString(this);
    }
    
    public static void main(String...strings) {
        MyBean myBean = new MyBean(1,"test");
        System.out.println(myBean.toString());
    }
}

输出：com.iqiyi.toutiao.Test.entity.MyBean@65ab7765[id=1,name=test]

此外，还可以指定输出风格：

json格式：return ToStringBuilder.reflectionToString(this,ToStringStyle.JSON_STYLE);