使用filter解决中文乱码问题--struts2乱码

一.在web.xml中配置

xml 代码

    <filter>              <filter-name>EncodingFilter</filter-name>              <filter-class>com.kenshin.base.SysFilter</filter-class>              <init-param>                  <param-name>encoding</param-name>                  <param-value>UTF-8</param-value>              </init-param>              <init-param>                  <param-name>enable</param-name>                  <param-value>true</param-value>              </init-param>          </filter>          <filter-mapping>              <filter-name>EncodingFilter</filter-name>              <url-pattern>*.do</url-pattern>          </filter-mapping>  

二.filter类代码

java 代码

package com.kenshin.base;     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 org.apache.commons.logging.Log;   import org.apache.commons.logging.LogFactory;   import org.hibernate.Session;   import org.hibernate.SessionFactory;   import org.hibernate.Transaction;     public class SysFilter implements Filter {       protected String sEncodingName;         protected FilterConfig sysFilter;         protected boolean bEnable;         protected Log logger = LogFactory.getLog(SysFilter.class);         public void destroy() {         }         public void doFilter(ServletRequest arg0, ServletResponse arg1,               FilterChain arg2) throws IOException, ServletException {           // TODO Auto-generated method stub           if (this.bEnable) {               try {                     arg0.setCharacterEncoding(this.sEncodingName);                   arg1.setContentType("text/html;charset=" + this.sEncodingName);                   arg1.setCharacterEncoding(this.sEncodingName);                   arg2.doFilter(arg0, arg1);                 } catch (Exception e) {                   logger.info("出错了");               }               // session.close();           } else {               arg2.doFilter(arg0, arg1);           }       }         public void init(FilterConfig arg0) throws ServletException {           // TODO Auto-generated method stub           this.sysFilter = arg0;           this.loadFilterSetting();       }         private void loadFilterSetting() {           this.sEncodingName = this.sysFilter.getInitParameter("encoding");           logger.info("encoding:" + sEncodingName);           String sEnable = this.sysFilter.getInitParameter("enable");           if (sEnable != null && sEnable.equalsIgnoreCase("true")) {               this.bEnable = true;           } else {               this.bEnable = false;           }       }       }