解决java编程乱码问题

处理乱码问题

1、规范数据库和页面所有编码统一为一种例如utf-8

2、hibernate连接数据库设置连接编码

<session-factory>
   <property name="connection.url">
   jdbc:mysql://127.0.0.1:3306/leaveword?useUnicode=true&amp;characterEncoding=utf-8
  </property>

</session-factory>

3、提交数据前进行编码

String userName = new String (userName.getBytes("iso-8859-1","utf-8"))

或者加入过滤器

加入过滤器步骤

 

1）写一个过滤器类

 

package com.filter;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;/** * 过滤器编码 * * @author Administrator * */public class CharacterEncodingFilter implements Filter {String encoding = null;FilterConfig filterConfig = null;public void destroy() {// TODO Auto-generated method stubthis.encoding = null;this.filterConfig = null;}/** * 过滤处理方法 */public void doFilter(ServletRequest arg0, ServletResponse arg1,FilterChain arg2) throws IOException, ServletException {// TODO Auto-generated method stubif(encoding !=null){//对请求进行编码设置arg0.setCharacterEncoding(encoding);}//将处理权转交给下一个处理器arg2.doFilter(arg0,arg1);}/** * 初始化方法 */public void init(FilterConfig arg0) throws ServletException {// TODO Auto-generated method stubthis.filterConfig = arg0;this.encoding = arg0.getInitParameter("encoding");}}

2）配置web.xml

<filter><filter-name>CharacterEncodingFilter</filter-name><filter-class>com.filter.CharacterEncodingFilter</filter-class><init-param><param-name>encoding</param-name><param-value>UTF-8</param-value></init-param><init-param><param-name>ignore</param-name><param-value>true</param-value></init-param></filter><filter-mapping><filter-name>CharacterEncodingFilter</filter-name><servlet-name>action</servlet-name></filter-mapping>