如何在Spring中發送一個Post請求和RequetTemplate

Question

我試圖用spring RequestTemplate發送一個post請求，但我總是得到401錯誤;

使用用於捲曲

C:\Users\Latitude E 5410>curl -X POST http://localhost:8080/demo.rest.springsecu 
rity.oauth2.0.authentication/oauth/token -H "Accept: application/json" -d "usern 
ame=user1&password=user1&client_id=client1&client_secret=client1&grant_type=pass 
word&scope=read,write" 
{"access_token":"abe9d772-cb29-4bd7-b41a-437e50c10652","token_type":"bearer","re 
fresh_token":"bc24f370-fcd8-4ae0-b724-a4241c746b29","expires_in":299844,"scope": 
"read,write"}curl: (6) Could not resolve host: application 

java代碼：

HttpEntity<String> request = new HttpEntity<String>(getHeadersWithClientCredentials()); 
     HttpHeaders headers = new HttpHeaders(); 
     headers.setContentType(MediaType.APPLICATION_JSON); //restTemplate.postForObject 
     //restTemplate. 
     MultiValueMap<String, String> mvm = new LinkedMultiValueMap<String, String>(); 
      mvm.add("client_id", "client1"); 
      mvm.add("client_secret", "client1"); 
      mvm.add("grant_type", "password"); 
      mvm.add("scope", "read,write,trust"); 
      mvm.add("username", "user1"); 
      mvm.add("password", "user1"); 
      HttpHeaders requestHeaders = new HttpHeaders(); 
      requestHeaders.setContentType(MediaType.APPLICATION_JSON); 
      HttpEntity<MultiValueMap<String, String>> requestEntity = new HttpEntity<MultiValueMap<String, String>>(mvm, requestHeaders); 
      ResponseEntity<Object> response = restTemplate.exchange("http://localhost:8080/demo.rest.springsecurity.oauth2.0.authentication/oauth/token?", HttpMethod.POST, requestEntity, Object.class); 

錯誤，我得到

Exception in thread "main" org.springframework.web.client.HttpClientErrorException: 401 Non-Autorisé 
    at org.springframework.web.client.DefaultResponseErrorHandler.handleError(DefaultResponseErrorHandler.java:91) 
    at org.springframework.web.client.RestTemplate.handleResponse(RestTemplate.java:641) 
    at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:597) 
    at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:557) 
    at org.springframework.web.client.RestTemplate.exchange(RestTemplate.java:475) 
    at com.geofleet.calculation.TestClient.main(TestClient.java:44) 

Answer 1

我發現了另一個解決方案直接發送只是一個POST請求W，我還是覺得這是一個糟糕的做法（在URL中傳遞參數），但嘿它的作品，

RestTemplate restTemplate = new RestTemplate(); 
     HttpHeaders headers = new HttpHeaders(); 
     headers.setAccept(Arrays.asList(MediaType.APPLICATION_JSON)); 

     HttpEntity<String> entity = new HttpEntity<String>("parameters", headers); 

     ResponseEntity<String> s = restTemplate.exchange("http://localhost:8080/demo.rest.springsecurity.oauth2.0.authentication/oauth/token?username=user1&password=user1&client_id=client1&client_secret=client1&grant_type=password&scope=read", HttpMethod.POST, entity, String.class); 
     System.out.println(s.getBody().toString());