数据库中文乱码问题的处理

有时我们还需要处理页面和数据库之间数据存取的中文问题。这是通过开发SetCharacterEncodingFilter实现的。

首先，WebRoot/WEB-INF/web.xml有编码的filter声明

<filter>

<filter-name>StrutsPrepareFilter</filter-name> 

<filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareFilter

</filter-class>

</filter>

<filter>

<filter-name>Set Character Encoding</filter-name> 

<filter-class>com.ascent.util.SetCharacterEncodingFilter

</filter-class>

</filter>

<filter-mapping>

<filter-name>Set Character Encoding</filter-name>

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

 </filter-mapping>

<filter>

<filter-name>StrutsExecuteFilter</filter-name> 

<filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsExecuteFilter

</filter-class>

</filter>

其次，我们开发的filter类SetCharacterEncodingFilter源代码如下：

package com.ascent.util;

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.UnavailableException;

public class SetCharacterEncodingFilter implements Filter {

   public void destroy() {

    }

    public void doFilter(ServletRequest request, ServletResponse response,

    FilterChain chain)throws IOException, ServletException {

 

    request.setCharacterEncoding("gb2312");

 

    // 传递控制到下一个过滤器

    chain.doFilter(request, response);

    }

 

    public void init(FilterConfig filterConfig) throws ServletException {

    }

}