差異處
這裏顯示兩個版本的差異處。
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java:web:restapi:x-http-method-override_filter [2016/02/26 21:47] tony |
java:web:restapi:x-http-method-override_filter [2023/06/25 09:48] |
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| - | ====== Incorrect response(401) when using X-HTTP-Method-Override ====== | ||
| - | ===== Problem ===== | ||
| - | 我們使用Spring的Rest，先前為了支援X-HTTP-Method-Override，在已存在的Filter做了此功能。某天，同事發現使用apache client api操作我們的API發生了401錯誤: | ||
| - | <code> | ||
| - | {"code":401,"message":"Incorrect response","links":[{"rel":"more info","href":"http://192.168.1.110:8080/TestWeb/api/documents"}]} | ||
| - | </code> | ||
| - | 要發生這個問題有兩個條件， | ||
| - | - 使用Digest認證 | ||
| - | - 使用X-HTTP-Method-Override | ||
| - | 因此在我有空時，就開始追蹤這問題。 | ||
| - | ===== Trace ===== | ||
| - | Sprint Security提供了DigestAuthentationFilter負責處理Digest認證。在使用者發出第一次請求後，Spring Security在察覺未經過驗證的情況下，會透過AuthenticationEntryPoint送出請求認證資訊。而為了在認證失敗時，能夠輸出xml或json格式的錯誤訊息(可參考上方)，我們extend了DigestAuthenticationEntryPoint: | ||
| - | <code java> | ||
| - | public class JsonDigestAuthenticationEntryPoint extends DigestAuthenticationEntryPoint { | ||
| - | |||
| - | private static final Log logger = LogFactory.getLog(JsonDigestAuthenticationEntryPoint.class); | ||
| - | |||
| - | @Autowired | ||
| - | private MessageProcessor mMessageProcessor; | ||
| - | |||
| - | @Override | ||
| - | public void commence(HttpServletRequest request, | ||
| - | HttpServletResponse response, AuthenticationException authException) | ||
| - | throws IOException, ServletException { | ||
| - | |||
| - | // ... skip | ||
| - | |||
| - | httpResponse.addHeader("WWW-Authenticate", authenticateHeader); | ||
| - | |||
| - | try { | ||
| - | ErrorInfo erroInfo = ErrorResponseEntityCreator.createErrorInfo(request, HttpStatus.UNAUTHORIZED.value(), | ||
| - | authException.getMessage()); | ||
| - | |||
| - | response.setStatus(HttpStatus.UNAUTHORIZED.value()); | ||
| - | mMessageProcessor.handle(erroInfo, request, response); | ||
| - | } catch (Exception e) { | ||
| - | throw new ServletException(e); | ||
| - | } | ||
| - | } | ||
| - | |||
| - | } | ||
| - | </code> | ||
