RestTemplate 

　　1.我用RestTemplate请求时 我把他注入到容器里  这样可以 什么用什么时候拿   

　　2.也可以new出来 不过我不喜欢 所以就没有用new的

下面我自己的方法   先注入到容器 在 xxx-service.xml 里加上

然后用的时候 

　　@Autowired    private RestTemplate restTemplate;

get

@Override    public String seleteAllSeasonMatch(){        String url = xxx+"Season?seasontype=2";        HttpHeaders httpHeaders = new HttpHeaders();        httpHeaders.setContentType(MediaType.MULTIPART_FORM_DATA);        httpHeaders.add("xxx",DATAVOLLEY_KEY);        HttpEntity
     
       requestEntity = new HttpEntity
      
       ( httpHeaders);        ResponseEntity
       
         responseEntity =restTemplate.exchange(url,HttpMethod.GET,requestEntity,String.class);        String result = responseEntity.getBody();        System.out.println(result);;        return "";    }
       
      
     

post 

　　　　　HttpHeaders requestHeaders = new HttpHeaders();        requestHeaders.add("xxx", "1.0");        //body        MultiValueMap
     
       requestBody = new LinkedMultiValueMap<>();        requestBody.add("xxx", "1");        //HttpEntity        HttpEntity
      
        requestEntity = new HttpEntity
       
        (requestBody, requestHeaders);        //post        ResponseEntity
        
          responseEntity = restTemplate.postForEntity("http://xxx", requestEntity, String.class);        System.out.println(responseEntity.getBody());