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今天写代码的时候，发现需要使用后台进行http请求的时候，发现自己没有一个请求的封装，这就很不好了，于是乎就要一劳永逸自己写一个工具类进行调用，话不多说开干！

1.首先引入pom

<dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId>
</dependency> 
<!--JSON--><dependency><groupId>com.alibaba</groupId><artifactId>fastjson</artifactId><version>${fastjson.version}</version></dependency>
<!--    hutool工具    --><dependency><groupId>cn.hutool</groupId><artifactId>hutool-all</artifactId><version>5.8.9</version></dependency> 

 2.封装返回处理

比较简单的写了一下，使用自己项目里的就可以

public enum ResultCode {/* 成功 */SUCCESS(200, "成功"),/* 默认失败 */COMMON_FAIL(999, "失败"),/* 参数错误：1000～1999 */PARAM_NOT_VALID(1001, "参数无效"),PARAM_IS_BLANK(1002, "参数为空"),PARAM_TYPE_ERROR(1003, "参数类型错误"),PARAM_NOT_COMPLETE(1004, "参数缺失"),/* 业务错误 */NO_PERMISSION(3001, "没有权限");private Integer code;private String message;ResultCode(Integer code, String message) {this.code = code;this.message = message;}public Integer getCode() {return code;}public void setCode(Integer code) {this.code = code;}public String getMessage() {return message;}public void setMessage(String message) {this.message = message;}/*** 根据code获取message** @param code* @return*/public static String getMessageByCode(Integer code) {for (ResultCode ele : values()) {if (ele.getCode().equals(code)) {return ele.getMessage();}}return null;}
}

/*** @Author: zm* @Description: 统一返回实体* @Date: 2022/4/24 8:51*/
public class JsonResult<T> implements Serializable {private Boolean success;private Integer errorCode;private String errorMsg;private T data;public JsonResult() {}public JsonResult(boolean success) {this.success = success;this.errorCode = success ? ResultCode.SUCCESS.getCode() : ResultCode.COMMON_FAIL.getCode();this.errorMsg = success ? ResultCode.SUCCESS.getMessage() : ResultCode.COMMON_FAIL.getMessage();}public JsonResult(boolean success, ResultCode resultEnum) {this.success = success;this.errorCode = success ? ResultCode.SUCCESS.getCode() : (resultEnum == null ? ResultCode.COMMON_FAIL.getCode() : resultEnum.getCode());this.errorMsg = success ? ResultCode.SUCCESS.getMessage() : (resultEnum == null ? ResultCode.COMMON_FAIL.getMessage() : resultEnum.getMessage());}public JsonResult(boolean success, T data) {this.success = success;this.errorCode = success ? ResultCode.SUCCESS.getCode() : ResultCode.COMMON_FAIL.getCode();this.errorMsg = success ? ResultCode.SUCCESS.getMessage() : ResultCode.COMMON_FAIL.getMessage();this.data = data;}public JsonResult(boolean success, ResultCode resultEnum, T data) {this.success = success;this.errorCode = success ? ResultCode.SUCCESS.getCode() : (resultEnum == null ? ResultCode.COMMON_FAIL.getCode() : resultEnum.getCode());this.errorMsg = success ? ResultCode.SUCCESS.getMessage() : (resultEnum == null ? ResultCode.COMMON_FAIL.getMessage() : resultEnum.getMessage());this.data = data;}public Boolean getSuccess() {return success;}public void setSuccess(Boolean success) {this.success = success;}public Integer getErrorCode() {return errorCode;}public void setErrorCode(Integer errorCode) {this.errorCode = errorCode;}public String getErrorMsg() {return errorMsg;}public void setErrorMsg(String errorMsg) {this.errorMsg = errorMsg;}public T getData() {return data;}public void setData(T data) {this.data = data;}
}

public class ResultTool {public static <T> JsonResult<T> success() {return new JsonResult<T>(true);}public static <T> JsonResult<T> success(T data) {return new JsonResult<T>(true, data);}public static <T> JsonResult<T> fail() {return new JsonResult<T>(false);}public static <T> JsonResult<T> fail(ResultCode resultEnum) {return new JsonResult<T>(false, resultEnum);}public static <T> JsonResult<T> fail(boolean success,T data) {return new JsonResult<T>(false, data);}
}

3.封装http请求

我们基于hutool的HttpRequest请求进行自己代码的封装

package com.zm.test.utils;import cn.hutool.core.map.MapUtil;
import cn.hutool.http.*;
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.zm.test.commons.result.JsonResult;
import com.zm.test.commons.result.ResultTool;
import lombok.extern.slf4j.Slf4j;import java.util.HashMap;
import java.util.Map;/*** http请求处理* 默认json格式请求* @author zm* @date 2025/3/7*/
@Slf4j
public class HttpUtils {private static final Map<String,String> initHeaderMap= new HashMap<>();static {initHeaderMap.put(Header.CONTENT_TYPE.getValue(), ContentType.JSON.getValue());}/*** get请求* @param url 路径* @param clazz 返回实体* @param <T> 自定义实体* @return T*/public static <T> JsonResult<T> httpGet(String url, Class<T> clazz){try{HttpResponse getResponse=HttpRequest.get(url).headerMap(initHeaderMap,false).execute();String body=getResponse.body();if(getResponse.isOk()){return ResultTool.success(JSONObject.parseObject(body, clazz));}log.info("GET请求错误：返回状态码：{}，返回信息：{}",getResponse.getStatus(),body);return ResultTool.fail(false,JSONObject.parseObject(body, clazz));}catch (HttpException e){log.error("GET请求失败：{}",e.getMessage());return ResultTool.fail();}}/*** get请求* @param url 路径* @param param 请求参数* @param clazz 返回实体* @param <T> 自定义实体* @return T*/public static <T> JsonResult<T> httpGet(String url, Map<String,Object> param,Class<T> clazz){try{HttpResponse getResponse=HttpRequest.get(url).headerMap(initHeaderMap,false).form(param).execute();String body=getResponse.body();if(getResponse.isOk()){return ResultTool.success(JSONObject.parseObject(body, clazz));}log.info("GET请求错误：返回状态码：{}，返回信息：{}",getResponse.getStatus(),body);return ResultTool.fail(false,JSONObject.parseObject(body, clazz));}catch (HttpException e){log.error("GET请求失败：{}",e.getMessage());return ResultTool.fail();}}/*** get请求自定义header* @param url 路径* @param param 请求参数* @param header 请求头* @param clazz 返回实体* @param <T> 自定义实体* @return T*/public static <T> JsonResult<T> httpGet(String url,Map<String,Object> param,Map<String,String> header, Class<T> clazz){try{HttpResponse getResponse=HttpRequest.get(url).headerMap(MapUtil.isEmpty(header)?initHeaderMap:header,false).form(param).execute();String body=getResponse.body();if(getResponse.isOk()){return ResultTool.success(JSONObject.parseObject(body, clazz));}log.info("GET请求错误：返回状态码：{}，返回信息：{}",getResponse.getStatus(),body);return ResultTool.fail(false,JSONObject.parseObject(body, clazz));}catch (HttpException e){log.error("GET请求失败：{}",e.getMessage());return ResultTool.fail();}}/*** post请求* @param url 路径* @param clazz 返回实体* @param <T> 自定义实体* @return T*/public static <T> JsonResult<T> httpPost(String url,Map<String,Object> param, Class<T> clazz){try{HttpResponse getResponse=HttpRequest.post(url).headerMap(initHeaderMap,false).form(param).execute();String body=getResponse.body();if(getResponse.isOk()){return ResultTool.success(JSONObject.parseObject(body, clazz));}log.info("POST请求错误：返回状态码：{}，返回信息：{}",getResponse.getStatus(),body);return ResultTool.fail(false,JSONObject.parseObject(body, clazz));}catch (HttpException e){log.error("POST请求失败：{}",e.getMessage());return ResultTool.fail();}}/*** post请求* @param url 路径* @param header 请求头* @param clazz 返回实体* @param <T> 自定义实体* @return T*/public static <T> JsonResult<T> httpPost(String url,Map<String,Object> param,Map<String,String> header, Class<T> clazz){try{HttpResponse getResponse=HttpRequest.post(url).headerMap(MapUtil.isEmpty(header)?initHeaderMap:header,false).form(param).execute();String body=getResponse.body();if(getResponse.isOk()){return ResultTool.success(JSONObject.parseObject(body, clazz));}log.info("POST请求错误：返回状态码：{}，返回信息：{}",getResponse.getStatus(),body);return ResultTool.fail(false,JSONObject.parseObject(body, clazz));}catch (HttpException e){log.error("POST请求失败：{}",e.getMessage());return ResultTool.fail();}}/*** post请求* @param url 路径* @param param 请求传参* @param clazz 返回实体* @param <T> 自定义实体* @return T*/public static <T,E> JsonResult<T> httpPost(String url,E param, Class<T> clazz){try{HttpResponse getResponse=HttpRequest.post(url).headerMap(initHeaderMap,false).body(JSON.toJSONString(param)).execute();String body=getResponse.body();if(getResponse.isOk()){return ResultTool.success(JSONObject.parseObject(body, clazz));}log.info("POST请求错误：返回状态码：{}，返回信息：{}",getResponse.getStatus(),body);return ResultTool.fail(false,JSONObject.parseObject(body, clazz));}catch (HttpException e){log.error("POST请求失败：{}",e.getMessage());return ResultTool.fail();}}/*** post请求* @param url 路径* @param param 请求传参* @param header 请求头* @param clazz 返回实体* @param <T> 自定义实体* @return T*/public static <T,E> JsonResult<T> httpPost(String url,E param,Map<String,String> header, Class<T> clazz){try{HttpResponse getResponse=HttpRequest.post(url).headerMap(MapUtil.isEmpty(header)?initHeaderMap:header,false).body(JSON.toJSONString(param)).execute();String body=getResponse.body();if(getResponse.isOk()){return ResultTool.success(JSONObject.parseObject(body, clazz));}log.info("POST请求错误：返回状态码：{}，返回信息：{}",getResponse.getStatus(),body);return ResultTool.fail(false,JSONObject.parseObject(body, clazz));}catch (HttpException e){log.error("POST请求失败：{}",e.getMessage());return ResultTool.fail();}}
}

完成收工！！！