JAVA WEB开发中REST接口统一返回数据工具类封装

- 日理万妓 2022-12-20 02:11 196阅读 0赞

# 前言 #

日常`JAVA Web`项目开发过程中，一般都是基于`HTTP+REST`风格，`Controller`接口返回`JSON`格式数据到前端，前端获取`JSON`后展示在前端，为了项目的返回数据格式统一，这里总结一下常用`Web`开发过程中`REST`接口统一返回数据工具类封装。

# 一、工具类一RestResponse #

*  **RestResponse`（对内Rest接口-推荐）`**

package com.example.demo.result;
    
    import java.io.Serializable;
    
    /** * REST接口统一返回数据工具类封装RestResponse * @param <T> */
    public class RestResponse<T> implements Serializable { 
    
        private static final long serialVersionUID = 3728877563912075885L;
    
        private int code;
        private String msg;
        private T data;
    
        public RestResponse(){ 
    
        }
    
        public RestResponse(int code, String message, T data) { 
            this.code = code;
            this.setMsg(message);
            this.data = data;
        }
    
        public RestResponse(int code, T data) { 
            this.code = code;
            this.data = data;
        }
    
        public RestResponse(int code, String message) { 
            this.code = code;
            this.setMsg(message);
        }
     
        /** * 成功时-返回data * @param <T> * @return */
        public static <T> RestResponse<T> success(T data){ 
            return new RestResponse<T>(200, null, data);
        }
    
        /** * 成功-不返回data * @param <T> * @return */
        public static <T> RestResponse<T> success(String msg){ 
            return new RestResponse<T>(200, msg);
        }
    
        /** * 成功-返回data+msg * @param <T> * @return */
        public static <T> RestResponse<T> success(String msg, T data){ 
            return new RestResponse<T>(200, msg, data);
        }
     
        /** * 失败 * @param <T> * @return */
        public static <T> RestResponse<T> fail(String msg){ 
            return new RestResponse<T>(500, msg,null);
        }
    
        /** * 失败-code * @param <T> * @return */
        public static <T> RestResponse<T> fail(int code, String msg){ 
            return new RestResponse<T>(code, msg,null);
        }
    
     
        public int getCode() { 
            return code;
        }
    
        public String getMsg() { 
            return msg;
        }
     
     
        public T getData() { 
            return data;
        }
    
        public void setCode(int code) { 
            this.code = code;
        }
    
        public void setMsg(String msg) { 
            this.msg = msg;
        }
    
        public void setData(T data) { 
            this.data = data;
        }
    
        @Override
        public String toString() { 
            return "RestResponse{" + "code=" + code + ", msg='" + msg + '\'' +", data=" + data +'}';
        }
    }

# 二、工具类二RpcResponse #

*  **RpcResponse`（对外Rpc接口）`**

package com.example.oss.result;
    
    import lombok.Builder;
    import lombok.Data;
    import lombok.experimental.Accessors;
    
    import java.io.Serializable;
    
    /** * @desc: * @author: cao_wencao * @date: 2020-11-06 17:04 */
    @Data
    @Accessors(chain = true)
    @Builder
    public class RpcResponse<T> implements Serializable { 
        public static final int CODE_200 = 200;
    
        public static final int CODE_500 = 500;
        private static final long serialVersionUID = -1559957698621135646L;
    
    
        /** * 消息 CODE_200 */
        private int code = CODE_500;
    
        /** * 信息 */
        private String message;
    
        /** * 数据 */
        private Object data;
    
    
        /** * Instantiates a new Api result. */
        public RestResponse() { 
            super();
        }
    
    
        /** * Instantiates a new Api result. * * @param code the code * @param message the message * @param data the data */
        public RpcResponse(int code, String message, Object data) { 
            this.code = code;
            this.message = message;
            this.data = data;
        }
    
        /** * Instantiates a new Api result. * * @param code the code * @param message the message */
        public RpcResponse(int code, String message) { 
            this(code, message, null);
        }
    
    
        /** * 错误 * * @param message the message * @return api result */
        public static RpcResponse error(String message) { 
            return new RpcResponse(CODE_500, message, null);
        }
    
        /** * 错误 * * @param code the code * @param message the message * @return api result */
        public static RpcResponse error(int code, String message) { 
            return new RpcResponse(code, message);
        }
    
        /** * 成功 * * @param message the message * @return api result */
        public static RpcResponse succee(String message) { 
            return new RpcResponse(CODE_200, message);
        }
    
        /** * 成功 * * @param data the data * @param message the message * @return api result */
        public static RpcResponse succee(Object data, String message) { 
            return new RpcResponse(CODE_200, message, data);
        }
    
        /** * 成功 * * @param data the data * @return api result */
        public RpcResponse success(Object data) { 
    
            return new RpcResponse(CODE_200, null, data);
        }
    }

# 三、工具类三RestResponse #

*  **RestResponse`（对内Rest接口）`**

package com.example.oss.result;
    
    import lombok.Builder;
    import lombok.Data;
    import lombok.experimental.Accessors;
    
    import java.io.Serializable;
    
    /** * @desc: * @author: cao_wencao * @date: 2020-11-06 17:04 */
    @Data
    @Accessors(chain = true)
    @Builder
    public class RestResponse implements Serializable { 
        public static final int CODE_200 = 200;
    
        public static final int CODE_500 = 500;
        private static final long serialVersionUID = -1559957698621135646L;
    
    
        /** * 消息 CODE_200 */
        private int code = CODE_500;
    
        /** * 信息 */
        private String message;
    
        /** * 数据 */
        private Object data;
    
    
        /** * Instantiates a new Api result. */
        public RestResponse() { 
            super();
        }
    
    
        /** * Instantiates a new Api result. * * @param code the code * @param message the message * @param data the data */
        public RestResponse(int code, String message, Object data) { 
            this.code = code;
            this.message = message;
            this.data = data;
        }
    
        /** * Instantiates a new Api result. * * @param code the code * @param message the message */
        public RestResponse(int code, String message) { 
            this(code, message, null);
        }
    
    
        /** * 错误 * * @param message the message * @return api result */
        public static RestResponse error(String message) { 
            return new RestResponse(CODE_500, message, null);
        }
    
        /** * 错误 * * @param code the code * @param message the message * @return api result */
        public static RestResponse error(int code, String message) { 
            return new RestResponse(code, message);
        }
    
        /** * 成功 * * @param message the message * @return api result */
        public static RestResponse succee(String message) { 
            return new RestResponse(CODE_200, message);
        }
    
        /** * 成功 * * @param data the data * @param message the message * @return api result */
        public static RestResponse succee(Object data, String message) { 
            return new RestResponse(CODE_200, message, data);
        }
    
        /** * 成功 * * @param data the data * @return api result */
        public RestResponse success(Object data) { 
    
            return new RestResponse(CODE_200, null, data);
        }
    }