/**

  * RestTemplate 客户端访问

  */

 private void RestTemplateVisit() {

     String returnXml = ""; // 核心返回结果报文字符串  

     try {  

         //复杂构造函数的使用

         SimpleClientHttpRequestFactory requestFactory = new SimpleClientHttpRequestFactory();

         requestFactory.setConnectTimeout(1000);// 设置超时

         requestFactory.setReadTimeout(1000);  

         //利用复杂构造器可以实现超时设置，内部实际实现为 HttpClient

         RestTemplate restTemplate = new RestTemplate(requestFactory);  

         //设置HTTP请求头信息，实现编码等

         HttpHeaders requestHeaders = new HttpHeaders();

         // requestHeaders.set("Accept", "text/");

         requestHeaders.set("Accept-Charset", "utf-8");

         requestHeaders.set("Content-type", "text/xml; charset=utf-8");// 设置编码  

         //利用容器实现数据封装，发送

         HttpEntity<String> entity = new HttpEntity<String>(mRequestXml, requestHeaders);

         returnXml = restTemplate.postForObject(mUrl, entity, String.class);  

         // 转码原因：RestTemplate默认是使用org.springframework.http.converter.StringHttpMessageConverter来解析

         // StringHttpMessageConverter 默认用的 ISO-8859-1来编码的

         returnXml = new String(returnXml.getBytes("ISO-8859-1"), "utf-8");  

     } catch (UnsupportedEncodingException e) {

         e.printStackTrace();

     }  

     System.out.println("restTemplate客户端访问返回： \n" + returnXml);

 }  

public RestTemplate() {

          /**

               ...初始化过程

          */

}  

//实现超时

public RestTemplate(ClientHttpRequestFactory requestFactory) {

     this();

     setRequestFactory(requestFactory);

}  

 SimpleClientHttpRequestFactory requestFactory = new SimpleClientHttpRequestFactory();

 requestFactory.setConnectTimeout(1000);

 requestFactory.setReadTimeout(1000);  

 RestTemplate restTemplate = new RestTemplate(requestFactory);