restTemplate的用法_getmessageconverters-优快云博客

本文链接：https://blog.youkuaiyun.com/w893433055/article/details/95613277

博客介绍了RestTemplate的常用请求方法，包括使用postForObject()和exchange()方法进行POST请求，以及使用getForEntity()方法进行GET请求，为相关开发提供参考。

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1.restTemplate.postForObject()方法：POST

HttpHeaders header = new HttpHeaders();
header.setContentType(MediaType.MULTIPART_FORM_DATA);
MultiValueMap<String, Object> paramMap = new LinkedMultiValueMap<>();
paramMap.add("param", param);
HttpEntity<MultiValueMap<String, Object>> httpEntity = new HttpEntity<>(param, header);
restTemplate.getMessageConverters().set(1, new StringHttpMessageConverter(StandardCharsets.UTF_8));
String result = restTemplate.postForObject(url, httpEntity, String.class);

2.restTemplate.exchange ()方法：POST

HttpHeaders headers = new HttpHeaders();
headers.setContentType(MediaType.APPLICATION_JSON);
HttpEntity<String> httpEntity = new HttpEntity<String>(json,headers);
restTemplate.getMessageConverters().set(1, new StringHttpMessageConverter(StandardCharsets.UTF_8));
ResponseEntity<String> resp = restTemplate.exchange(url, HttpMethod.POST,httpEntity,String.class);

3.restTemplate.getForEntity(）方法：GET

 String url = "https://www.baidu.com?parm1=aa&param2=bb&param3=cc"
 ResponseEntity<String> responseEntity = restTemplate.getForEntity(url, String.class);
 String responseEntity.getBody();