spring restTemplate 用法

发出get请求，方式一

        String url = serverUrl+"/path/path?id={id}";
        int i = restTemplate.getForObject(url,int.class,id);

发出get请求，方式二

        URI url= UriComponentsBuilder.fromUriString(serverUrl)
                .path("/path/")
                .queryParam("key", key)
                .queryParam("key2",key2)
                .queryParam("key3",key3)
                .build()
                .toUri();
        return restTemplate.getForObject(url,String.class);

用spring restTemplate 发出post类型的表单请求

数据以键值对的方式进行传输，如：K=V&K=V

            MultiValueMap<String,Object> map = new LinkedMultiValueMap<>();
            map.add("userid",userid);
            map.add("password",password);
            boolean flag = restTemplate.postForObject(loginUrl,map,boolean.class);

接收LIST<Object>类型的数据

ResponseEntity<List<WorkFlowURLMapping>> responseEntity = restTemplate.exchange(url, HttpMethod.GET,null,new ParameterizedTypeReference<List<WorkFlowURLMapping>>() {});
		List<WorkFlowURLMapping> list = responseEntity.getBody();