3.13.3、创建结果类

创建类 R.java

• 方法返回是是this ，可以实现链式编程。 | package com.wzy.commonutils;

import io.swagger.annotations.ApiModelProperty;
import lombok.Data;

import java.util.HashMap;
import java.util.Map;

//统一返回结果的类
@Data
public class R {

**private **R(){}_//私有的无参构造，不对外new对象
_@ApiModelProperty(value = **"是否成功"**)<br />    **private **Boolean **success**;
@ApiModelProperty(value = **"返回码"**)<br />    **private **Integer **code**;
@ApiModelProperty(value = **"返回消息"**)<br />    **private **String **message**;
@ApiModelProperty(value = **"返回数据"**)<br />    **private **Map<String, Object> **data **= **new **HashMap<String, Object>();
**public static **R ok(){<br />        R r = **new **R();<br />        r.setSuccess(**true**);<br />        r.setCode(ResultCode.**_SUCCESS_**);<br />        r.setMessage(**"成功"**);<br />        **return **r;<br />    }
**public static **R error(){<br />        R r = **new **R();<br />        r.setSuccess(**false**);<br />        r.setCode(ResultCode.**_ERROR_**);<br />        r.setMessage(**"失败"**);<br />        **return **r;<br />    }
**public **R success(Boolean success){<br />        **this**.setSuccess(success);<br />        **return this**;<br />    }
**public **R message(String message){<br />        **this**.setMessage(message);<br />        **return this**;<br />    }
**public **R code(Integer code){<br />        **this**.setCode(code);<br />        **return this**;<br />    }
**public **R data(String key, Object value){<br />        **this**.**data**.put(key, value);<br />        **return this**;<br />    }
**public **R data(Map<String, Object> map){<br />        **this**.setData(map);<br />        **return this**;<br />    }

}

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