Spring mvc 过滤器

package com.zhy.t502.utils;

import java.io.IOException;

import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

public class Filter implements javax.servlet.Filter {

public void destroy() {
// TODO Auto-generated method stub

}

public void doFilter(ServletRequest arg0, ServletResponse arg1,
FilterChain arg2) throws IOException, ServletException {

arg0.setCharacterEncoding("utf-8");//UTF-8过滤器

arg2.doFilter(arg0, arg1);//放行

}

public void init(FilterConfig arg0) throws ServletException {
// TODO Auto-generated method stub
}

}

<filter>
<filter-name>utf-8</filter-name>　　　　<!-- 名字 -->
<filter-class>com.zhy.t502.utils.Filter</filter-class> <!-- 文件路径 -->
</filter>
<filter-mapping>
<filter-name>utf-8</filter-name>　　　　<!-- 名字 必须跟上面一致-->
<url-pattern>/*</url-pattern>　　     <!--过滤范围 -->
</filter-mapping>