Help: confused about RequestMappingHandlerMapping and UTF-8 (Spring 3.1.2)

[dixin]

1, I send a request through firefox: http://localhost:8080/search/q/q/测试
2, Through the Log, I get this:
21:39:16.933 [http-bio-8080-exec-4] DEBUG o.s.web.servlet.DispatcherServlet - DispatcherServlet with name 'qqq' processing GET request for [/search/q/q/测试]
21:39:16.933 [http-bio-8080-exec-4] DEBUG o.s.w.s.m.m.a.RequestMappingHandlerMapping - Looking up handler method for path /q/q/测试

RequestMappingHandlerMapping uses the UrlPathHelper to code the URI. I checked the source code of UrlPathHelper and it use "ISO-8859-1".

<beans:bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping">
        <beans:property name="urlPathHelper">
            <beans:bean class="org.springframework.web.util.UrlPathHelper">
                <beans:property name="urlDecode" value="true" />
                <beans:property name="defaultEncoding" value="UTF-8" />
            </beans:bean>
        </beans:property>
    </beans:bean>

<mvc:annotation-driven />

Then I used this and it's has no effect in xxx-servlet.xml.

3, controll works well. But I use the 3rd part as an input parameter:

@Controller
@RequestMapping("/q")
public class SearchController {
...
@RequestMapping(value = "/q/{keyword}")
    @ResponseBody
    public HashMap<String, ArrayList<Game>> searchq(@PathVariable("keyword") String keyword) {
    try {
            System.out.println(" -------------------------- " + new String(keyword.getBytes("ISO-8859-1"), "UTF-8"));
        } catch (UnsupportedEncodingException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
...

now the parameter "keyword" is 测试. It's coded with "ISO-8859-1" as the "System.out.println" is right. Here I just want to get a "UTF-8" parameter "keyword".

Very apprecaited if anyone who can advise about this or give me a full example. For example, resolve this by xml not hardcoding.

[Marten Deinum]

Try adding a CharacterEncodingFilter to your filters list and force the encoding to UTF-8... Also make sure that the request you are sending is actually UTF-8 (by specifing the encoding in the page).

[dixin]

Thanks very much. I have already added the CharacterEncodingFilter in web.xml and URIEncoding="UTF-8" for TomCat7 before encountered this problem.
I think DispatcherServlet can get the right value.

21:39:16.933 [http-bio-8080-exec-4] DEBUG o.s.web.servlet.DispatcherServlet - DispatcherServlet with name 'qqq' processing GET request for [/search/q/q/测试]