package?Filter;

import?javax.servlet.*;
import?javax.servlet.annotation.WebFilter;
import?javax.servlet.annotation.WebInitParam;
import?java.io.IOException;

/**
?*?Created?with?IntelliJ?IDEA.
?*?User:?YEN
?*?Date:?2016/7/31
?*?Time:?14:17
?*/

/**
?*?字符編碼過濾器
?*/


//注解配置過濾器
@WebFilter（urlPatterns?=?{“/*“}initParams?=?{
????????@WebInitParam（name=“encoding“value?=?“UTF-8“）
}）
public?class?CharactorFilter?implements?Filter?{

????String?encoding=null;

????public?CharactorFilter（）{

????}

????//初始化方法
????@Override
????public?void?init（FilterConfig?filterConfig）?throws?ServletException?{
????????encoding=filterConfig.getInitParameter（“encoding“）;
????}

????//過濾器處理方法
????@Override
????public?void?doFilter（ServletRequest?servletRequest?ServletResponse?servletResponse?FilterChain?filterChain）?throws?IOException?ServletException?{
????????if（null!=encoding）{
????????????//設(shè)置請(qǐng)求的編碼格式
????????????servletRequest.setCharacterEncoding（encoding）;
????????????//設(shè)置response字符編碼
????????????servletResponse.setContentType（“text/html;charset=“+encoding）;
????????}
????????//傳遞給下一個(gè)過濾器
????????filterChain.doFilter（servletRequest?servletResponse）;
????}

????//銷毀方法
????@Override
????public?void?destroy（）?{
????????encoding=null;
????}

}