用过滤器解决全站中文数据提交乱码问题

来源：互联网发布：字体管家mac版编辑：程序博客网时间：2024/05/01 14:47

package cn.lfd.web.filter;import java.io.IOException;import java.io.UnsupportedEncodingException;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.http.HttpServletRequest;import javax.servlet.http.HttpServletRequestWrapper;import javax.servlet.http.HttpServletResponse;/* * 解决全站中文数据提交乱码问题过滤器 */public class CharacterEncodingFilter implements Filter{//实现filter接口@Overridepublic void destroy() {}@Overridepublic void doFilter(ServletRequest req, ServletResponse resp,FilterChain chain) throws IOException, ServletException {HttpServletRequest request = (HttpServletRequest) req;//强转为HttpServletRequestHttpServletResponse response = (HttpServletResponse) resp;//这三行代码解决post提交中文乱码问题,但不能解决get提交中文乱码问题request.setCharacterEncoding("UTF-8");response.setCharacterEncoding("UTF-8");response.setContentType("text/html;charset=UTF-8");MyCharacterEncodingRequest MyRequest = new MyCharacterEncodingRequest(request);chain.doFilter(MyRequest, response);//放行}@Overridepublic void init(FilterConfig arg0) throws ServletException {// TODO Auto-generated method stub}}

//对HttpServletRequest对象中的getParameter方法进行增强class MyCharacterEncodingRequest extends HttpServletRequestWrapper {public MyCharacterEncodingRequest(HttpServletRequest request) {super(request);}@Overridepublic String getParameter(String name) {try {String value = super.getParameter(name);//调用父类得到数据if(value==null) {//如果没有返回数据,直接返回nullreturn null;}if(!super.getMethod().equalsIgnoreCase("get")) {//如果是以post提交,直接返回valuereturn value;}//进入下面说明是以get方式提交value = new String(value.getBytes("iso-8859-1"),"UTF-8");//把数据进行iso-8859-1解码并以UTF-8进行编码解决中文乱码return value;} catch (UnsupportedEncodingException e) {throw new RuntimeException(e);}}}

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