Filter过滤器，xml配置与页面不乱码整理

1.xml配置

<?xml version="1.0" encoding="UTF-8"?>

<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">

  <display-name>filter</display-name>

  <filter>

    <filter-name>filter01</filter-name>

    <filter-class>com.myfilter.Filter01</filter-class>

    <init-param>

      <param-name>code</param-name>

      <param-value>utf-8</param-value>

    </init-param>

  </filter>

  <filter-mapping>

    <filter-name>filter01</filter-name>

    <url-pattern>/*</url-pattern>

  </filter-mapping>

  <filter>

    <filter-name>filter02</filter-name>

    <filter-class>com.myfilter.Filter02</filter-class>

  </filter>

  <filter-mapping>

    <filter-name>filter02</filter-name>

    <url-pattern>/pages/mainFilter.jsp</url-pattern>

  </filter-mapping>

  <welcome-file-list>

    <welcome-file>index.html</welcome-file>

    <welcome-file>index.htm</welcome-file>

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

    <welcome-file>default.html</welcome-file>

    <welcome-file>default.htm</welcome-file>

    <welcome-file>default.jsp</welcome-file>

  </welcome-file-list>

</web-app>

web.xml

2.过滤器1解析字符编码

/**

 *

 */

package com.myfilter;

import java.io.IOException;

import javax.servlet.Filter;

import javax.servlet.FilterChain;

import javax.servlet.FilterConfig;

import javax.servlet.ServletException;

import javax.servlet.ServletRequest;

import javax.servlet.ServletResponse;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import org.apache.commons.lang3.StringUtils;

/**

 * @author Administrator

 *

 */

public class Filter01 implements Filter

{

    private String encoding=null;

    @Override

    public void destroy()

    {

    }

    @Override

    public void doFilter(ServletRequest arg0, ServletResponse arg1,

            FilterChain arg2) throws IOException, ServletException

    {

        HttpServletRequest request=(HttpServletRequest)arg0;

        HttpServletResponse response=(HttpServletResponse)arg1;

        request.setCharacterEncoding(encoding);

        response.setCharacterEncoding(encoding);

        response.setContentType("text/html charset="+encoding);

        arg2.doFilter(request, response);

        System.out.println(encoding);

    }

    @Override

    public void init(FilterConfig arg0) throws ServletException

    {

        String ww=arg0.getInitParameter("code");

        if(StringUtils.isNoneBlank(ww))

        {

            encoding=ww;

        }

    }

}

Filter01.java

3.过滤器2

package com.myfilter;

import java.io.IOException;

import javax.servlet.Filter;

import javax.servlet.FilterChain;

import javax.servlet.FilterConfig;

import javax.servlet.ServletException;

import javax.servlet.ServletRequest;

import javax.servlet.ServletResponse;

public class Filter02 implements Filter

{

    @Override

    public void destroy()

    {

        // TODO Auto-generated method stub

    }

    @Override

    public void doFilter(ServletRequest arg0, ServletResponse arg1,

            FilterChain arg2) throws IOException, ServletException

    {

        System.out.println("第二个过滤器----00001");

        arg2.doFilter(arg0, arg1);

        System.out.println("第二个过滤器----00002");

    }

    @Override

    public void init(FilterConfig arg0) throws ServletException

    {

        System.out.println("02");

    }

}

Filter02.java

Filter过滤器，xml配置与页面不乱码整理的相关教程结束。