使用filter解决中文乱码问题--struts2乱码

<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>

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;
}
}

}