<filter>
      <filter-name>char</filter-name>
    <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
    <init-param>
        <param-name>encoding</param-name>
        <param-value>UTF-8</param-value>
    </init-param>
  </filter>
  <filter-mapping>
      <filter-name>char</filter-name>
     <url-pattern>/*</url-pattern>
  </filter-mapping>

------解决方案--------------------
探讨

jsp页面显示乱码是因为contenttype设置的问题
数据库中插入是乱码，是因为安装数据库时没有设置好，最好设置成UTF8
提交数据是乱码，需要过滤器，同时看看tomcat的server.xml配置文件 在 <connector Port = 8080 的最  后加上URIEncoding="UTF-8"


------解决方案--------------------
spring中有自带的字符过滤器
<filter>
   <filter-name>Spring character encoding filter</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>

另外 数据库编码自己改一下


------解决方案--------------------
设置过滤器：

UnicodeFilter.java

package org.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;


public class UnicodeFilter implements Filter
{

	String encoding="";
	
	public void destroy()
	{
		// TODO Auto-generated method stub

	}
	  
	 /* (non-Javadoc)
	  * @see javax.servlet.Filter#init(javax.servlet.FilterConfig)
	  */
	 public void init(FilterConfig config) throws ServletException {  
		 encoding = config.getInitParameter("encoding");
		 if (org.apache.commons.lang.StringUtils.isEmpty(encoding))
		{
			encoding="UTF-8";
		}
		 config.getServletContext().setAttribute("encoding", encoding);
	 }

	 /* (non-Javadoc)
	  * @see javax.servlet.Filter#doFilter(javax.servlet.ServletRequest,  
	  *   javax.servlet.ServletResponse,  
	  *   javax.servlet.FilterChain)
	  */
	 public void doFilter(ServletRequest req, ServletResponse res,FilterChain chain)  
	  throws IOException, ServletException  
	 {  
		 req.setCharacterEncoding(this.encoding);
		 chain.doFilter(req,res);
	 }

}


web.xml加：
<filter>
		<description>UnicodeFilter</description>
		<display-name>UnicodeFilter</display-name>
		<filter-na