java 使用 Spring RestTemplate 进行 POST 时收到 400 BAD 请求
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Getting 400 BAD Request when using Spring RestTemplate to POST
提问by user2498487
Can someone please help me figure out what is wrong with the code below?
有人可以帮我弄清楚下面的代码有什么问题吗？
I am using Spring 3.1.1 RestTemplateto try to call a REST WS on Box.comto get a new access token from a refresh token.
我正在使用Spring 3.1.1 RestTemplate尝试调用Box.com上的REST WS以从刷新令牌中获取新的访问令牌。
The code below is returning a 400 (BAD REQUEST). I am able to successfullycall the same method using the FireFox POST plugin. I've compared output from the writeForm methodon the FormHttpMessageConverter classand it is exactly as I am sending it from FireFox.
下面的代码返回一个400 (BAD REQUEST). 我能够使用FireFox POST 插件成功调用相同的方法。我已经比较了上的输出，它与我从 FireFox 发送的完全一样。writeForm methodFormHttpMessageConverter class
Does anyone have any ideas?
有没有人有任何想法？
public static void main(String[] args) throws InterruptedException {
try {
String apiUrl = "https://www.box.com/api/oauth2/token";
String clientSecret = "[MY SECRET]";
String clientId = "[MY ID]";
String currentRefreshToken = "[MY CURRENT VALID REFRESHTOKEN]";
RestTemplate restTemplate = new RestTemplate();
List<HttpMessageConverter<?>> messageConverters = new ArrayList<HttpMessageConverter<?>>();
messageConverters.add(new FormHttpMessageConverter());
restTemplate.setMessageConverters(messageConverters);
MultiValueMap<String, String> body = new LinkedMultiValueMap<String, String>();
body.add("grant_type", "refresh_token");
body.add("refresh_token", currentRefreshToken);
body.add("client_id", clientId);
body.add("client_secret", clientSecret);
HttpHeaders headers = new HttpHeaders();
headers.setContentType(MediaType.APPLICATION_FORM_URLENCODED);
headers.add("Accept", "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8,application/json");
headers.add("Accept-Encoding", "gzip, deflate");
HttpEntity<?> entity = new HttpEntity<Object>(body, headers);
restTemplate.exchange(apiUrl, HttpMethod.POST, entity, String.class);
} catch (Exception ex) {
System.out.println("ex = " + ex.getMessage());
}
}
}
回答by Dillon Ryan Redding
The no-arg constructor for RestTemplateuses the java.netAPI to make requests, which does not support gzip encoding. There is, however, a constructor that accepts a ClientHttpRequestFactory. You can use the HttpComponentsClientHttpRequestFactoryimplementation, which uses the Apache HttpComponents HttpClient API to make requests. This doessupport gzip encoding. So you can do something like the following (from the Spring Docs) when creating your RestTemplate:
的无参数构造函数RestTemplate使用java.netAPI 发出请求，不支持 gzip 编码。但是，有一个构造函数接受ClientHttpRequestFactory. 您可以使用HttpComponentsClientHttpRequestFactory实现，它使用 Apache HttpComponents HttpClient API 发出请求。这确实支持 gzip 编码。因此，您可以在创建您的时执行以下操作（来自Spring Docs）RestTemplate：
HttpClient httpClient = HttpClientBuilder.create().build();
ClientHttpRequestFactory requestFactory = new HttpComponentsClientHttpRequestFactory(httpClient);
RestTemplate restTemplate = new RestTemplate(requestFactory);
回答by nobar
In Spring Boot, adding something like this to pom.xmlseems to add some magic.
在 Spring Boot 中，添加这样的东西pom.xml似乎增添了一些魔力。
<dependency>
<groupId>com.squareup.retrofit2</groupId>
<artifactId>retrofit</artifactId>
<version>2.3.0</version>
</dependency>
I'm assume that there are other, similar, solutions...
我假设还有其他类似的解决方案......
回答by RathanaKumar
double check the HttpHeaders properly !!
仔细检查 HttpHeaders 正确！
