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 stub
this.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 stub
if(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 stub
this.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&g