spring 获取参数编码
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Get Parameter Encoding
提问by Erik
I have a problem using spring mvc and special chars in a GET request. Consider the following method:
我在 GET 请求中使用 spring mvc 和特殊字符时遇到问题。考虑以下方法：
@RequestMapping("/update")
public Object testMethod(@RequestParam String name) throws IOException {
}
to which I send a GET request with name containing an "?" (german umlaut), for instance. It results in spring receiving "?¤" because the browser maps "?" to %C3%A4.
我向其发送名称包含“？”的 GET 请求。（德语变音），例如。这导致 spring 收到“？¤”，因为浏览器映射“？” 到%C3%A4。
So, how can I get the correct encoded string my controller?
那么，我怎样才能获得正确的编码字符串我的控制器呢？
Thanks for your help!
谢谢你的帮助！
采纳答案by Rihards
What about this? Could it help?
那这个呢？有帮助吗？
In your web.xml:
在您的web.xml 中：
<filter>
<filter-name>CharacterEncodingFilter</filter-name>
<filter-class>com.example.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>
<servlet-name>dispatcher</servlet-name>
</filter-mapping>
com.example.CharacterEncodingFilter:
com.example.CharacterEncodingFilter：
public class CharacterEncodingFilter implements Filter {
protected String encoding;
public void init(FilterConfig filterConfig) throws ServletException {
encoding = filterConfig.getInitParameter("encoding");
}
public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse,
FilterChain filterChain) throws IOException, ServletException {
HttpServletRequest request = (HttpServletRequest) servletRequest;
request.setCharacterEncoding(encoding);
filterChain.doFilter(servletRequest, servletResponse);
}
public void destroy() {
encoding = null;
}
}
回答by vicox
You're having this problem, because the request differentiates between body encoding and URI encoding. A CharacterEncodingFilter sets the body encoding, but not the URI encoding.
您遇到了这个问题，因为请求区分了正文编码和 URI 编码。CharacterEncodingFilter 设置正文编码，但不设置 URI 编码。
You need to set URIEncoding="UTF-8" as an attribute in all your connectors in your Tomcat server.xml. See here: http://tomcat.apache.org/tomcat-6.0-doc/config/ajp.html
您需要在 Tomcat server.xml 的所有连接器中将URIEncoding="UTF-8" 设置为属性。见这里：http: //tomcat.apache.org/tomcat-6.0-doc/config/ajp.html
Or, alternatively, you can set useBodyEncodingForURI="True".
或者，您也可以设置 useBodyEncodingForURI="True"。
If you're using the maven tomcat plugin, just add this parameter:
如果您使用的是 maven tomcat 插件，只需添加此参数：
mvn -Dmaven.tomcat.uriEncoding=UTF-8tomcat:run
mvn -Dmaven.tomcat.uriEncoding=UTF-8tomcat:run
