java 接受和发送http，post，get请求，参数中文乱码解决。

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maven 坐标

        <!--         HTTP --><dependency>    <groupId>org.apache.httpcomponents</groupId>    <artifactId>httpclient</artifactId>    <version>4.5.1</version></dependency>

一，发送post和get请求

http工具类

public class HttpUtils {    /**      * 发送 get请求      */      public static String get(String param,String URL) {          CloseableHttpClient httpclient = HttpClients.createDefault();         String obj=null;        try {              HttpUriRequest httpget = new HttpGet(URL+"?"+param);            // 执行get请求.                CloseableHttpResponse response = httpclient.execute(httpget);              try {                  // 获取响应实体                    HttpEntity entity = response.getEntity();                  // 打印响应状态                    System.out.println(response.getStatusLine());                  if (entity != null) {                      obj=EntityUtils.toString(entity);                }              } finally {                  response.close();              }          } catch (ClientProtocolException e) {              e.printStackTrace();          } catch (ParseException e) {              e.printStackTrace();          } catch (IOException e) {              e.printStackTrace();          } finally {              // 关闭连接,释放资源                try {                  httpclient.close();              } catch (IOException e) {                  e.printStackTrace();              }          }return obj;      } /**  * 发送 post请求 */  public static String post(String json,String URL) {   String obj=null;      // 创建默认的httpClient实例.          CloseableHttpClient httpclient = HttpClients.createDefault();        // 创建httppost          HttpPost httppost = new HttpPost(URL);        httppost.addHeader("Content-type", "application/json; charset=utf-8");      httppost.setHeader("Accept", "application/json");    try {      StringEntity s = new StringEntity(json,Charset.forName("UTF-8"));  //对参数进行编码，防止中文乱码    s.setContentEncoding("UTF-8");    httppost.setEntity(s);        CloseableHttpResponse response = httpclient.execute(httppost);          try {          //获取相应实体            HttpEntity entity = response.getEntity();              if (entity != null) {              obj=EntityUtils.toString(entity, "UTF-8");            }                      } finally {              response.close();          }      } catch (ClientProtocolException e) {          e.printStackTrace();      } catch (UnsupportedEncodingException e1) {          e1.printStackTrace();      } catch (IOException e) {          e.printStackTrace();      } finally {          // 关闭连接,释放资源            try {              httpclient.close();          } catch (IOException e) {              e.printStackTrace();          }      }      return obj;}  }

json工具类

public final class JSONUtil {public static<T>  String toJson(T t){return JSON.toJSONString(t);}public static<T> T parseJson(String text,Class<T> clazz){return JSON.parseObject(text, clazz);}}

控制层

//发送post请求Obj obj=new Obj（）//参数 任意实体类HttpUtils.post(JSONUtil.toJson(obj), "http://www.baidu.com");//发送get请求String param="param1=" + URLEncoder.encode("中国", "UTF-8") + "&param2=value2";HttpUtils.get(param, "http://www.baidu.com");

二接受 http请求

接收post请求

  //接收post请求需要加@RequestBody  @RequestMapping(value="test",method=RequestMethod.POST)  @ResponseBody public MyResult<Object> test(HttpServletRequest request,@RequestBody String record){MyResult<Object> result = new MyResult<Object>();                Obj obj=JSONUtil.parseJson(record, Obj.class);               return result;  }

接收get请求

 @RequestMapping(value="test") @ResponseBody public MyResult<Object> test(HttpServletRequest request,String param1,String param2){       MyResult<Object> result = new MyResult<Object>();               //TODO               return result;  }

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