Java开发网 - 如何设置Filter

Topic: 如何设置Filter

1.如何设置Filter

Posted by: shokey520
Posted on: 2006-11-23 21:50

正在学习JSP，使用了一个Filter进行统一中文编码，Filter名为econding。在web.xml中配置如下：
<filter>
  <filter-name>encoding</filter-name>
  <filter-class>com.demo.filter.EncodingFilter</filter-class>
  <init-param>
    <param-name>encoding</param-name>
    <param-value>GBK</param-value>
  </init-param>
</filter>
<filter-mapping>
  <filter-name>encoding</filter-name>
  <url-pattern>/test/*</url-pattern>
</filter-mapping>
但是当我在浏览器中键入http://127.0.0.1:8080/test/index.jsp时，这个页面中的中文还是乱码。
而且我在Filter的doFilter方法中加入System.out.println("请求编码");Tomcat控制台没有任何输出。
我被这个搞郁闷两天了，请高手指点一下。

2.Re:如何设置Filter [Re: shokey520]	Copy to clipboard
Posted by: YuLimin Posted on: 2006-11-24 19:51 web.xml全部的内容看看，reload了应用没有？

3.Re:如何设置Filter [Re: shokey520]

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Posted by: shokey520
Posted on: 2006-11-25 03:40

以下是web.xml的全部的内容
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"
version="2.4">
<display-name>demo</display-name>

<filter>
  <filter-name>encoding</filter-name>
  <filter-class>com.demo.filter.EncodingFilter</filter-class>
  <init-param>
    <param-name>encoding</param-name>
    <param-value>GBK</param-value>
  </init-param>
</filter>

<filter-mapping>
  <filter-name>encoding</filter-name>
  <url-pattern>/demo/*</url-pattern>
</filter-mapping>
<filter-mapping>
  <filter-name>encoding</filter-name>
  <url-pattern>/demo/test.jsp</url-pattern>
</filter-mapping>

<servlet>
<servlet-name>debugjsp</servlet-name>
<description>Added to compile JSPs with debug info</description>
<servlet-class>org.apache.jasper.servlet.JspServlet</servlet-class>
<init-param>
<param-name>classdebuginfo</param-name>
<param-value>true</param-value>
</init-param>
<load-on-startup>3</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>debugjsp</servlet-name>
<url-pattern>*.jsp</url-pattern>
</servlet-mapping>

<welcome-file-list>
  <welcome-file>index.jsp</welcome-file>
</welcome-file-list>

</web-app>

4.Re:如何设置Filter [Re: shokey520]	Copy to clipboard
Posted by: xiaoxiaohei Posted on: 2007-02-16 10:46 应该改成 <filter-mapping> <filter-name>encoding</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> 这样就可以了