1、get

Java代码  

public static String doGet(String strUrl ){              String strReturn="";               HttpGet httpGet = new HttpGet(strUrl);              CloseableHttpClient httpclient = null;               CloseableHttpResponse response1=null;              try {                  httpclient = HttpClients.createDefault();                  response1 = httpclient.execute(httpGet);                   HttpEntity entity1 = response1.getEntity();                   strReturn=EntityUtils.toString(entity1) ;                  EntityUtils.consume(entity1);               }catch(Exception e){                   e.printStackTrace();              }finally {                        try {                           if(response1!=null)                          response1.close();                      } catch (IOException e) {                           e.printStackTrace();                      }              }              return strReturn;          }

 

2、put

Java代码  

public static String doPut(String strUrl,String param){               CloseableHttpClient httpclient = HttpClients.createDefault();          String strReturn="";            PutMethod httpput=new PutMethod(strUrl);             try {                if(param!=null)              {                  RequestEntity entity = new StringRequestEntity(param, "application/json", "UTF-8");                  httpput.setRequestEntity(entity);              }                  httpClient.executeMethod(httpput);                  byte[] bytes = httpput.getResponseBody();                   strReturn=  new String(bytes) ;               } catch (Exception e) {                  // TODO Auto-generated catch block                  e.printStackTrace();              }                return strReturn;          }

 

3、post

Java代码  

public static String doPost(String requestUrl, String payload) {              CloseableHttpClient httpclient = HttpClients.createDefault();              String strReturn="";            PostMethod httpost = new PostMethod(requestUrl);              try {               if(payload!=null)              {                  RequestEntity entity = new StringRequestEntity(payload, "application/json", "UTF-8");                  httpost.setRequestEntity(entity);              }                  httpClient.executeMethod(httpost);                  byte[] bytes = httpost.getResponseBody();                   strReturn=  new String(bytes) ;               } catch (Exception e) {                  // TODO Auto-generated catch block                  e.printStackTrace();              }               return strReturn;              }

4、delete

Java代码  

public static void doDelete(String urlToRead) throws Exception {                  URL url = new URL(urlToRead);                  HttpURLConnection httpCon = (HttpURLConnection) url.openConnection();                  httpCon.setDoOutput(true);                  httpCon.setRequestProperty(                      "Content-Type", "application/x-www-form-urlencoded" );                  httpCon.setRequestMethod("DELETE");                  httpCon.connect();                  httpCon.disconnect();                                 }

 

MAVEN

            
         
          commons-httpclient
             
         
          commons-httpclient
             
         
          3.1
         
        

 

转载于：https://peter1981.iteye.com/blog/2347869