RestTemplate
2021/9/16 23:34:52
本文主要是介绍RestTemplate,对大家解决编程问题具有一定的参考价值,需要的程序猿们随着小编来一起学习吧!
方式一:
Map<String, Object> params = new HashMap<>(); params.put("appId", "xxx"); params.put("appSecret", "yyyyyyyyyy"); String url = "http://test.com/sso/open/token?appId={appId}&appSecret={appSecret}"; ResponseEntity<SsoResult<String>> responseEntity = restTemplate().exchange(url, HttpMethod.GET, null, parameterizedTypeReference, params); 方式二:
String url = "http://test.com/sso/open/token"; Map<String, Object> params = new HashMap<>(); params.put("appId", "xxx"); params.put("appSecret", "yyyyyyy"); UriComponentsBuilder builder = UriComponentsBuilder.fromHttpUrl(url); params.entrySet().stream().forEach(o -> builder.queryParam(o.getKey(),o.getValue())); String url2 = builder.build().encode().toString(); ParameterizedTypeReference parameterizedTypeReference = new ParameterizedTypeReference<SsoResult<String>>() {}; ResponseEntity<SsoResult<String>> responseEntity = restTemplate().exchange(url2, HttpMethod.GET, null, parameterizedTypeReference); SsoResult<String> ssoResult = responseEntity.getBody();
Headers:
private HttpHeaders getHeaders() { HttpHeaders headers = new HttpHeaders(); headers.add("content-type", "application/json"); AccessToken accessToken = AccessToken.accessToken; headers.add("authorization", accessToken.getAccess_token()); return headers; }
ObjectMapper:
先获取为String类型,再用ObjectMapper转换为对象,可以用于调试时使用。 ResponseEntity<String> responseEntity = restTemplate.exchange(usersUrl, HttpMethod.GET, requestEntity, String.class, params); String body = responseEntity.getBody(); IdaasResponse<List<UserInfo>> response = objectMapper.readValue(body, new TypeReference<IdaasResponse<List<UserInfo>>>() {}); return response.getData(); 完整代码如下:
String usersUrl = "${idaas.url}/api/users?limit={limit}&skip={skip}"; HttpHeaders headers = getHeaders(); // 见上面的getHeaders()
Map<String, Object> params = new HashMap<>(); params.put("limit", limit); params.put("skip", skip); HttpEntity<String> requestEntity = new HttpEntity<>(null, headers); ResponseEntity<String> responseEntity = restTemplate.exchange(usersUrl, HttpMethod.GET, requestEntity, String.class, params); String body = responseEntity.getBody(); IdaasResponse<List<UserInfo>> response = objectMapper.readValue(body, new TypeReference<IdaasResponse<List<UserInfo>>>() {}); return response.getData();
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