http://www.cnblogs.com/hujunzheng/p/6018505.html

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v1、使用restTemplate的postForObject方法

　　注：目前没有发现发送携带header信息的getForObject方法。

HttpHeaders headers = new HttpHeaders();Enumeration
     
       headerNames = request.getHeaderNames();while (headerNames.hasMoreElements()) {  String key = (String) headerNames.nextElement(); String value = request.getHeader(key); headers.add(key, value); } String restStrResult = restTemplate.postForObject(url, /*携带header*/new HttpEntity
      
       (headers), String.class, 　　　　　　　　　　　　 /*携带parameter*/request.getParameterMap());
      
     

v2、使用restTemplate

import java.util.Enumeration;import java.util.Map;import javax.servlet.ServletRequest; import javax.servlet.http.HttpServletRequest; import org.springframework.http.HttpEntity; import org.springframework.http.HttpHeaders; import org.springframework.http.HttpMethod; import org.springframework.http.ResponseEntity; import org.springframework.web.client.RestTemplate; public class RestTemplateUtil { private RestTemplate restTemplate; public void setRestTemplate(RestTemplate restTemplate) { this.restTemplate = restTemplate; } public String post(ServletRequest req, String url, Map
     
       params) { ResponseEntity
      
        rss = request(req, url, HttpMethod.POST, params); return rss.getBody(); } public String get(ServletRequest req, String url, Map
       
         params) { ResponseEntity
        
          rss = request(req, url, HttpMethod.GET, params); return rss.getBody(); } public String delete(ServletRequest req, String url, Map
         
           params) { ResponseEntity
          
            rss = request(req, url, HttpMethod.DELETE, params); return rss.getBody(); } public String put(ServletRequest req, String url, Map
           
             params) { ResponseEntity
            
              rss = request(req, url, HttpMethod.PUT, params); return rss.getBody(); } /** * @param req * @param url * @param method * @param params maybe null * @return */ private ResponseEntity
             
               request(ServletRequest req, String url, HttpMethod method, Map
              
                params) { HttpServletRequest request = (HttpServletRequest) req; //获取header信息 HttpHeaders requestHeaders = new HttpHeaders(); Enumeration
               
                 headerNames = request.getHeaderNames(); while (headerNames.hasMoreElements()) { String key = (String) headerNames.nextElement(); String value = request.getHeader(key); requestHeaders.add(key, value); } //获取parameter信息 if(params == null) { params = request.getParameterMap(); } HttpEntity
                
                  requestEntity = new HttpEntity
                 
                  (null, requestHeaders); ResponseEntity
                  
                    rss = restTemplate.exchange(url, method, requestEntity, String.class, params); return rss; } }
                  
                 
                
               
              
             
            
           
          
         
        
       
      
     

v 3.restTemplate以json格式发送post请求

　　1.发送请求

　　public String _post(ServletRequest req, String url, Map
     
       params) {        HttpServletRequest request = (HttpServletRequest) req;        //拿到header信息        HttpHeaders requestHeaders = new HttpHeaders(); requestHeaders.setContentType(MediaType.APPLICATION_JSON); Enumeration
      
        headerNames = request.getHeaderNames(); while (headerNames.hasMoreElements()) { String key = (String) headerNames.nextElement(); String value = request.getHeader(key); requestHeaders.add(key, value); } net.sf.json.JSONObject jsonParams = net.sf.json.JSONObject.fromObject(params); HttpEntity
       
         requestEntity = new HttpEntity
        
         (jsonParams, requestHeaders); String result = restTemplate.postForObject(url, requestEntity, String.class); return result; }
        
       
      
     

　　2.接收处理

　　 @RequestMapping("/xxx")      @ResponseBody      public String xxx(HttpServletRequest request) throws IOException {            String jsonString = getBodyString(request.getReader());            JSONObject jbJsonObject = new JSONObject().fromObject(jsonString); User user = (User) JSONObject.toBean(jbJsonObject, User.class); System.out.println(jbJsonObject); System.out.println("id:" + user.getUserName());return null; } @RequestMapping("/xxx2") @ResponseBody public String xxx2(User user) throws IOException { System.out.println("---------------"); System.out.println(user.getUserName()); System.out.println(user.getPassWord()); System.out.println("---------------"); if (true) { return "success"; } else { return "fail"; } } 　　 　　public String getBodyString(BufferedReader br) { 　　　　String inputLine; 　　　　String str = ""; 　　　　try { 　　　　　　while ((inputLine = br.readLine()) != null) { 　　　　　　str += inputLine; 　　　　} 　　　　　　br.close(); 　　　　} catch (IOException e) { 　　　　　　System.out.println("IOException: " + e); 　　　　} 　　　　return str; 　　}