httpClient使用方法

最新推荐文章于 2024-06-25 14:35:48 发布

原创最新推荐文章于 2024-06-25 14:35:48 发布 · 486 阅读

0 ·

CC 4.0 BY-SA版权

文章标签：

#string #null #exception #url

http 专栏收录该内容

1 篇文章

订阅专栏

本文详细介绍了使用HTTP客户端发送URL并获取响应数据的过程，包括构造请求参数、设置请求头、执行HTTP GET请求以及处理响应结果。

httpClient使用方法

public static String sendUrl(String urlString, Map<String,String> parm, String readCharset ) {
       StringBuffer sb = new StringBuffer();
       DefaultHttpClient httpclient = new DefaultHttpClient();
       BufferedReader reader = null;
       try{
           if( urlString.lastIndexOf("?") > 1 ){
               urlString = urlString + getRequestPram( parm, readCharset);
           }else{
               urlString = urlString + "?" + getRequestPram( parm, readCharset);
           }

            HttpGet httpGet = new HttpGet(urlString);
            httpGet.addHeader("Content-Type","application/x-www-form-urlencoded; charset=\""+readCharset+"\"");
            URI url = new URI(urlString);
           // 设置请求的数据
            httpGet.setURI(url);
            // 执行
            HttpResponse response = httpclient.execute(httpGet);
            HttpEntity entity = response.getEntity();
            // 显示结果
             reader = new BufferedReader(new InputStreamReader(entity.getContent(), "utf-8"));
             String line = reader.readLine();
             while (line != null) {
               sb.append(line);
               line = reader.readLine();
             }
             if (entity != null) {
               entity.consumeContent();
             }

       }catch (Exception e) {
           log.error("支付回调异常",e);
       }finally{
           try {
               if(reader != null){
                   reader.close();
               }
           } catch (IOException e) {
               log.error("",e);
           }
           httpclient.getConnectionManager().shutdown();
       }
       return sb.toString();
   }