java使用httpclient封装post请求

古城微笑少年丶 2023-10-17 21:48 20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

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。