Java使用HttpClient实现Post请求

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Java使用HttpClient实现Post请求

public static boolean httpPostWithJson(String jsonObj,String url){
        boolean isSuccess = false;
        
        HttpPost post = null;
        try {
            HttpClient httpClient = new DefaultHttpClient();

            // 设置超时时间
            httpClient.getParams().setParameter(CoreConnectionPNames.CONNECTION_TIMEOUT, 2000);
            httpClient.getParams().setParameter(CoreConnectionPNames.SO_TIMEOUT, 2000);
                
            post = new HttpPost(url);
            // 构造消息头
            post.setHeader("Content-type", "application/json; charset=utf-8");
            post.setHeader("Connection", "Close");
            String sessionId = UUID.randomUUID().toString();
//            post.setHeader("SessionId", sessionId);
//            post.setHeader("appid", appid);
                        
            // 构建消息实体
            StringEntity entity = new StringEntity(jsonObj, Charset.forName("UTF-8"));
            entity.setContentEncoding("UTF-8");
            // 发送Json格式的数据请求
            entity.setContentType("application/json");
            post.setEntity(entity);
                
            HttpResponse response = httpClient.execute(post);
                
            // 检验返回码
            int statusCode = response.getStatusLine().getStatusCode();
            if(statusCode != HttpStatus.SC_OK){
//                LogUtil.info("请求出错: "+statusCode);
                isSuccess = false;
            }else{
                int retCode = 0;
                String sessendId = "";
                // 返回码中包含retCode及会话Id
                for(Header header : response.getAllHeaders()){
                    if(header.getName().equals("retcode")){
                        retCode = Integer.parseInt(header.getValue());
                    }
                    if(header.getName().equals("SessionId")){
                        sessendId = header.getValue();
                    }
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
            isSuccess = false;
        }finally{
            if(post != null){
                try {
                    post.releaseConnection();
                    Thread.sleep(500);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        }
        return isSuccess;
    }