java使用httpclient封装post请求

古城微笑少年丶 2023-10-17 21:48 109阅读 0赞

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 

  1. public static String postTDH(String url, String body, String mimeType,
  2.             String charset, Integer connTimeout, Integer readTimeout) throws IOException, GeneralSecurityException  
  3.     {  
  4.         String result = "";
  5.         HttpClient client = null;
  6.         HttpPost post = new HttpPost(url);  
  7.         try {  
  8.             /*HttpEntity entity = new StringEntity(body, ContentType.create(  
  9.                     mimeType, charset));  
  10.             post.setEntity(entity);*/  
  11.             StringEntity s = new StringEntity(body.toString(),
  12.                     Charset.forName("utf-8"));
  13.             s.setContentEncoding("UTF-8");
  14.             post.setEntity(s);
  15.             // 设置参数  
  16.             Builder customReqConf = RequestConfig.custom();  
  17.             if (connTimeout != null) {  
  18.                 customReqConf.setConnectTimeout(connTimeout);  
  19.             }  
  20.             if (readTimeout != null) {  
  21.                 customReqConf.setSocketTimeout(readTimeout);  
  22.             }  
  23.             post.setConfig(customReqConf.build());
  24.             HttpResponse res;  
  25.             if (url.startsWith("https")) {  
  26.                 // 执行 Https 请求.  
  27.                 client = createSSLInsecureClient();  
  28.                 res = client.execute(post);  
  29.             } else {  
  30.                 // 执行 Http 请求.  
  31.                 client = HttpClientUtils.client;
  32.                 res = client.execute(post);
  33.             }  
  34.             int statusCode = res.getStatusLine().getStatusCode();
  35.             System.out.println("返回码:"+statusCode);
  36.             //result = IOUtils.toString(res.getEntity().getContent(), charset);  
  38.             result = UnicodeToZ.decodeUnicode(EntityUtils
  39.                     .toString(res.getEntity()));
  40.             logger.info("################发送报文内容：################");
  41.             logger.info(body);
  42.             logger.info("################返回报文内容：################");
  43.             logger.info(result);
  44.         }finally {  
  45.             post.releaseConnection();  
  46.             if (url.startsWith("https") && client != null  
  47.                     && client instanceof CloseableHttpClient) {  
  48.                 ((CloseableHttpClient) client).close();  
  49.             }  
  50.         }  
  51.         return result;
  53.     }
  55. Integer connTimeout, Integer readTimeout;接口超时时间设置
  57. UnicodeToZ.decodeUnicode(EntityUtils .toString(res.getEntity()));返回的报文进行中文装换（选择性使用）
  59. public class UnicodeToZ {
  60.     public static String decodeUnicode(String theString) {    
  62.         char aChar;    
  63.        int len = theString.length();    
  64.        StringBuffer outBuffer = new StringBuffer(len);    
  65.        for (int x = 0; x < len;) {    
  66.            aChar = theString.charAt(x++);    
  67.            if (aChar == '\\') {    
  68.                aChar = theString.charAt(x++);    
  69.                if (aChar == 'u') {    
  70.                    // Read the xxxx    
  71.                    int value = 0;    
  72.                    for (int i = 0; i < 4; i++) {    
  73.                        aChar = theString.charAt(x++);    
  74.                        switch (aChar) {    
  75.                        case '0':    
  76.                        case '1':    
  77.                        case '2':    
  78.                        case '3':    
  79.                        case '4':    
  80.                        case '5':    
  81.                        case '6':    
  82.                        case '7':    
  83.                        case '8':    
  84.                        case '9':    
  85.                            value = (value << 4) + aChar - '0';    
  86.                            break;    
  87.                        case 'a':    
  88.                        case 'b':    
  89.                        case 'c':    
  90.                        case 'd':    
  91.                        case 'e':    
  92.                        case 'f':    
  93.                            value = (value << 4) + 10 + aChar - 'a';    
  94.                            break;    
  95.                        case 'A':    
  96.                        case 'B':    
  97.                        case 'C':    
  98.                        case 'D':    
  99.                        case 'E':    
  100.                        case 'F':    
  101.                            value = (value << 4) + 10 + aChar - 'A';    
  102.                            break;    
  103.                        default:    
  104.                            throw new IllegalArgumentException(    
  105.                                    "Malformed   \\uxxxx   encoding.");    
  106.                        }    
  107.                    }    
  108.                    outBuffer.append((char) value);    
  109.                } else {    
  110.                    if (aChar == 't')    
  111.                        aChar = '\t';    
  112.                    else if (aChar == 'r')    
  113.                        aChar = '\r';    
  114.                    else if (aChar == 'n')    
  115.                        aChar = '\n';    
  116.                    else if (aChar == 'f')    
  117.                        aChar = '\f';    
  118.                    outBuffer.append(aChar);    
  119.                }    
  120.            } else    
  121.                outBuffer.append(aChar);    
  122.        }    
  123.        return outBuffer.toString();    
  124.    }  
  125. }

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。

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