java使用httpclient封装post请求

我们程序员在项目开发过程中，经常用到接口，目前比较流行httpclient  技术。以下是我之前封装的httpclient的post请求 ，希望对大家有所帮助：

精简代码如下：可以直接复制使用

 public static String postTDH(String url, String body, String mimeType,
            String charset, Integer connTimeout, Integer readTimeout) throws IOException, GeneralSecurityException  
    {  
        String result = "";
        HttpClient client = null;
        HttpPost post = new HttpPost(url);  
        try {  
            /*HttpEntity entity = new StringEntity(body, ContentType.create(  
                    mimeType, charset));  
            post.setEntity(entity);*/  
            StringEntity s = new StringEntity(body.toString(),
                    Charset.forName("utf-8"));
            s.setContentEncoding("UTF-8");
            post.setEntity(s);
            // 设置参数  
            Builder customReqConf = RequestConfig.custom();  
            if (connTimeout != null) {  
                customReqConf.setConnectTimeout(connTimeout);  
            }  
            if (readTimeout != null) {  
                customReqConf.setSocketTimeout(readTimeout);  
            }  
            post.setConfig(customReqConf.build());
            HttpResponse res;  
            if (url.startsWith("https")) {  
                // 执行 Https 请求.  
                client = createSSLInsecureClient();  
                res = client.execute(post);  
            } else {  
                // 执行 Http 请求.  
                client = HttpClientUtils.client;
                res = client.execute(post);
            }  
            int statusCode = res.getStatusLine().getStatusCode();
            System.out.println("返回码:"+statusCode);
            //result = IOUtils.toString(res.getEntity().getContent(), charset);  
            
            result = UnicodeToZ.decodeUnicode(EntityUtils
                    .toString(res.getEntity()));
            logger.info("################发送报文内容：################");
            logger.info(body);
            logger.info("################返回报文内容：################");
            logger.info(result);
        }finally {  
            post.releaseConnection();  
            if (url.startsWith("https") && client != null  
                    && client instanceof CloseableHttpClient) {  
                ((CloseableHttpClient) client).close();  
            }  
        }  
        return result;
        
    }  

Integer connTimeout, Integer readTimeout;接口超时时间设置

UnicodeToZ.decodeUnicode(EntityUtils .toString(res.getEntity()));返回的报文进行中文装换（选择性使用）

public class UnicodeToZ {
    public static String decodeUnicode(String theString) {    

        char aChar;    
       int len = theString.length();    
       StringBuffer outBuffer = new StringBuffer(len);    
       for (int x = 0; x < len;) {    
           aChar = theString.charAt(x++);    
           if (aChar == '\\') {    
               aChar = theString.charAt(x++);    
               if (aChar == 'u') {    
                   // Read the xxxx    
                   int value = 0;    
                   for (int i = 0; i < 4; i++) {    
                       aChar = theString.charAt(x++);    
                       switch (aChar) {    
                       case '0':    
                       case '1':    
                       case '2':    
                       case '3':    
                       case '4':    
                       case '5':    
                       case '6':    
                       case '7':    
                       case '8':    
                       case '9':    
                           value = (value << 4) + aChar - '0';    
                           break;    
                       case 'a':    
                       case 'b':    
                       case 'c':    
                       case 'd':    
                       case 'e':    
                       case 'f':    
                           value = (value << 4) + 10 + aChar - 'a';    
                           break;    
                       case 'A':    
                       case 'B':    
                       case 'C':    
                       case 'D':    
                       case 'E':    
                       case 'F':    
                           value = (value << 4) + 10 + aChar - 'A';    
                           break;    
                       default:    
                           throw new IllegalArgumentException(    
                                   "Malformed   \\uxxxx   encoding.");    
                       }    
                   }    
                   outBuffer.append((char) value);    
               } else {    
                   if (aChar == 't')    
                       aChar = '\t';    
                   else if (aChar == 'r')    
                       aChar = '\r';    
                   else if (aChar == 'n')    
                       aChar = '\n';    
                   else if (aChar == 'f')    
                       aChar = '\f';    
                   outBuffer.append(aChar);    
               }    
           } else    
               outBuffer.append(aChar);    
       }    
       return outBuffer.toString();    
   }  
}

改转换方法  大家可以详细研究。有不明白的地方大家可以留言，博主会及时帮你解决。