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>