Spring/Rest @PathVariable 字符编码 [英] Spring/Rest @PathVariable character encoding
问题描述
在我使用的环境 (Tomcat 6) 中，路径段中的百分比序列在映射到 @PathVariable 时显然是使用 ISO-8859-1 解码的.
In the environment I'm using (Tomcat 6), percent sequences in path segments apparently are decoded using ISO-8859-1 when being mapped to a @PathVariable.
我希望它是 UTF-8.
I'd like that to be UTF-8.
我已经将 Tomcat 配置为使用 UTF-8(使用 server.xml 中的 URIEncoding 属性).
I already configured Tomcat to use UTF-8 (using the URIEncoding attribute in server.xml).
Spring/Rest 是否自己进行解码?如果是，我在哪里可以覆盖默认编码?
Is Spring/Rest doing the decoding on its own? If yes, where can I override the default encoding?
附加信息；这是我的测试代码:
Additional information; here's my test code:
@RequestMapping( value = "/enc/{foo}", method = RequestMethod.GET )
public HttpEntity<String> enc( @PathVariable( "foo" ) String foo, HttpServletRequest req )
{
String resp;
resp = " path variable foo: " + foo + "
" +
" req.getPathInfo(): " + req.getPathInfo() + "
" +
"req.getPathTranslated(): " + req.getPathTranslated() + "
" +
" req.getRequestURI(): " + req.getRequestURI() + "
" +
" req.getContextPath(): " + req.getContextPath() + "
";
HttpHeaders headers = new HttpHeaders();
headers.setContentType( new MediaType( "text", "plain", Charset.forName( "UTF-8" ) ) );
return new HttpEntity<String>( resp, headers );
}
如果我使用以下 URI 路径执行 HTTP GET 请求:
If I do an HTTP GET request with the following URI path:
/TEST/enc/%c2%a3%20and%20%e2%82%ac%20rates
这是 UTF-8 编码然后百分比编码的形式
which is the UTF-8 encoded then percent-encoded form of
/TEST/enc/£ and € rates
我得到的输出是:
path variable foo: £ and ⬠rates
req.getPathInfo(): /enc/£ and € rates
req.getPathTranslated(): C:Usersjreworkspace.metadata.pluginsorg.eclipse.wst.server.core mp0wtpwebappsTESTenc£ and € rates
req.getRequestURI(): /TEST/enc/%C2%A3%20and%20%E2%82%AC%20rates
req.getContextPath(): /TEST
在我看来，Tomcat(设置 URIEncoding 属性后)做了正确的事情(请参阅 getPathInfo())，但路径变量仍在 ISO-8859-1 中解码.
which to me shows that Tomcat (after setting the URIEncoding attribute) does the right thing (see getPathInfo()), but the path variable is decoded still in ISO-8859-1.
答案是:
Spring/Rest 显然使用了请求编码，这是一件非常奇怪的事情，因为这是关于 body，而不是 URI.叹气.
Spring/Rest apparently uses the request encoding, which is a very strange thing to do, as this is about the body, not the URI. Sigh.
添加:
<filter>
<filter-name>CharacterEncodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>CharacterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
解决了这个问题.确实应该更简单.
fixed the problem. It really should be simpler.
实际上，情况更糟:
如果该方法确实有一个请求主体，并且该主体不是以 UTF-8 编码的，则需要额外的 forceEncoding 参数.这似乎有效，但我担心以后会引起更多问题.
If the method indeed has a request body, and that one isn't encoded in UTF-8, the additional forceEncoding parameter is needed. This seems to work, but I'm concerned it will cause more problems later on.
另一种方法
与此同时，我发现可以禁用解码，我指定
In the meantime, I found out that it's possible to disable the decoding, my specifying
<property name="urlDecode" value="false"/>
...在这种情况下，接收者可以做正确的事情；但这当然会让很多其他事情变得更难.
...in which case the recipient can to the right thing; but of course this will make lots of other things harder.
推荐答案
你需要给 web.xml 添加过滤器
I thing that you need add filter to web.xml
<filter>
<filter-name>CharacterEncodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
<init-param>
<param-name>forceEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>CharacterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
这篇关于Spring/Rest @PathVariable 字符编码的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
