解决中文乱码（ jsp表单提交中文时出现乱码）

时间：2023-03-08 16:08:42
解决中文乱码（ jsp表单提交中文时出现乱码）

有三种方法：

1.建立一个filter中文解决乱码

2.Struts2在struts.xml中修改默认的编码设定

3.用Spring解决中文乱码

4.直接在jsp中修改解决

1.建立一个filter解决乱码

1)建立一个filter类src/util/SetCharacterEncodingFilter.java

package util;

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 javax.servlet.UnavailableException;

     public class SetCharacterEncodingFilter implements Filter {

    public void destroy() {

    }

       public void doFilter(ServletRequest request, ServletResponse response,

    FilterChain chain)throws IOException, ServletException {

    //设置编码
    request.setCharacterEncoding("gb2312");

    // 传递控制到下一个过滤器

    chain.doFilter(request, response);

    }

    public void init(FilterConfig filterConfig) throws ServletException {

    }

}

2.修改web.xml,添加filter和filter-mapping(在struts的FilterDispatcher映射之前添加)

<?xml version="1.0" encoding="UTF-8"?>

<web-app version="2.5"

    xmlns="http://java.sun.com/xml/ns/javaee"

    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee

    http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
    
     <!--      -->
   <filter>

        <filter-name>Set Character Encoding</filter-name>

        <filter-class>util.SetCharacterEncodingFilter</filter-class>

    </filter>

    <filter-mapping>

        <filter-name>Set Character Encoding</filter-name>

        <url-pattern>/*</url-pattern>

    </filter-mapping>

    web-app>

2.Struts2在struts.xml中修改默认编码(Struts2_2.16以上)

<struts>

    <constant name="struts.i18n.encoding" value="gbk"></constant>

</struts>

3.用Spring解决中文乱码

修改web.xml,添加filter和filter-mapping(在struts的FilterDispatcher映射之前添加)

<filter>

        <filter-name>encodingFilter</filter-name>

        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>

        <init-param>

            <param-name>encoding</param-name>

            <param-value>GBK</param-value>

        </init-param>

    </filter>

    <filter-mapping>

        <filter-name>encodingFilter</filter-name>

        <url-pattern>/*</url-pattern>

    </filter-mapping>

4.直接在jsp中修改解决

<%@ page contentType="text/html; charset=gb2312"%>

<html>

<head>    <title>JSP的中文处理</title>

<meta http-equiv="Content-Type" content="text/html; charset=gb2312">

</head>

<body>

<%

   String s=new String(request.getParameter("name").getBytes("ISO-8859-1"),"gb2312") ;

   out.print(s);

%>

</body>

</html>

相关文章