Java HTTP Request

最新推荐文章于 2023-11-29 17:11:48 发布

转载最新推荐文章于 2023-11-29 17:11:48 发布 · 498 阅读

1 ·

CC 4.0 BY-SA版权

原文链接：https://my.oschina.net/slightScenery/blog/1865194

本文详细介绍了如何使用Java进行HTTP请求的处理，包括POST、GET和PUT等请求方式的具体实现。文章提供了代码示例，展示了如何设置请求头、实体内容及响应处理，并提及了基本认证的设置方法。

POST示例：

private JSONObject postRequest(String url,JSONObject postData){
       JSONObject object = null;
       try {
           DefaultHttpClient httpClient = new DefaultHttpClient();
           HttpPost postRequest = new HttpPost(url);
           postRequest.setHeader("Authorization", "Bearer "+accessToken);
           postRequest.setHeader("Content-Type","application/json; charset=UTF-8");
           StringEntity entity = new StringEntity(postData.toString(),"UTF-8");
           postRequest.setEntity(entity);
           HttpResponse response = httpClient.execute(postRequest);
           if(response !=null){
               BufferedReader br = new BufferedReader(new InputStreamReader((response.getEntity().getContent())));
               String output;
               String objStr = "";
               while ((output = br.readLine()) != null) {
                   objStr+=output;
               }
               object = new JSONObject(objStr);
               if (response.getStatusLine().getStatusCode() == 201) {
                   object.put("statusFlag", Boolean.TRUE);
               }else{
                   object.put("statusFlag", Boolean.FALSE);
               }
           }
           httpClient.getConnectionManager().shutdown();
       }catch (Exception e) {
           e.printStackTrace();
       }
       return object;
   }

GET:

HttpGet putRequest = new HttpGet(url);
           putRequest.setHeader("Authorization", "Bearer "+accessToken);
           putRequest.setHeader("Content-Type","application/json; charset=UTF-8");
           HttpResponse response = httpClient.execute(putRequest);

PUT:

DefaultHttpClient httpClient = new DefaultHttpClient();

HttpPut putRequest = new HttpPut(url);

putRequest.setHeader("Authorization", "Bearer "+accessToken);

putRequest.setHeader("Content-Type","application/json; charset=UTF-8");

StringEntity entity = new StringEntity(postData.toString(),"UTF-8");

putRequest.setEntity(entity);

HttpResponse response = httpClient.execute(putRequest);

Others:

Note:
                String user_pass = username + ":" + password;
               String encoded = Base64.encodeBase64String( user_pass.getBytes() );
               DefaultHttpClient httpClient = new DefaultHttpClient();
               HttpPost postRequest = new HttpPost(mtrackUrl);
               postRequest.setHeader("Authorization", "Basic "+encoded);
               postRequest.setHeader("Content-Type","application/xml; charset=UTF-8");
               String xml = XML.toString(referObj);

注：一般来说http请求需要对应设置最大连接数，以及timeout时间等。

转载于:https://my.oschina.net/slightScenery/blog/1865194