tomcat 5.09 中文问题解决全攻略

2/26/2007来源:JSP技巧人气:10316

  我开发基于 eclipse3.2+j2ee5.0 +tomcat5.09+MySQL5.0

一、表单POST的数据的中文乱码解决

       这类型的数据中文可以通过filters来实时过滤。filters代码如下:

package filters;

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 ...{
 PRotected String encoding = null;
 protected FilterConfig filterConfig = null;
 protected boolean ignore = true;

 public void destroy() ...{
  this.encoding = null;
  this.filterConfig = null;
 }

public void doFilter(ServletRequest request, ServletResponse response,
FilterChain chain)
throws IOException, ServletException ...{

 // Conditionally select and set the character encoding to be used
 if (ignore || (request.getCharacterEncoding() == null)) ...{
  String encoding = selectEncoding(request);
  if (encoding != null)
   request.setCharacterEncoding(encoding);
 }

 // Pass control on to the next filter
 chain.doFilter(request, response);

}

public void init(FilterConfig filterConfig) throws ServletException ...{

 this.filterConfig = filterConfig;
 this.encoding = filterConfig.getInitParameter("encoding");
 String value = filterConfig.getInitParameter("ignore");
 if (value == null)
  this.ignore = true;
 else if (value.equalsIgnoreCase("true"))
  this.ignore = true;
 else if (value.equalsIgnoreCase("yes"))
  this.ignore = true;
 else
  this.ignore = false;

}

protected String selectEncoding(ServletRequest request) ...{
 return (this.encoding);
}

}
 

  filters配置(配置web.xml):

 

<filter>
 <filter-name>Set Character Encoding</filter-name>
 <filter-class>filters.SetCharacterEncodingFilter</filter-class>
 <init-param>
  <param-name>encoding</param-name>
  <param-value>GBK</param-value>
 </init-param>
</filter>

<filter-mapping>
 <filter-name>Set Character Encoding</filter-name>
 <url-pattern>/*</url-pattern>
</filter-mapping>


 

二、将中文数据存入数据库乱码问题

  以mysql为例,改写连接字符串即可:

jdbc:mysql://localhost:3306/workshopdb? useUnicode=true&characterEncoding=GBK
三、 通过url传递参数和识别中文文件名问题

  问题表现:1、通过url传递参数,例如:  

http://localhost:81/crjy/admin/articlelist.jsp?levelId=64&levelName=学生党建
 
通过request.getParameter("levleName")得到的值为乱玛。
      2、识别中文文件名,例如:

<img src="./pic/四川地图.jpg">  图片不能显示。
解决之道:

  1、如果只想解决第一个问题那很简单,两句代码即可:

String role=request.getParameter("chara");
role=new String(role.getBytes("ISO-8859-1"),"GB2312");
out.println(role);
  因为tomcat服务器默认用 ISO-8859-1 字符集的。但是这样只能解决第一个问题不能解决中文文件名问题

  2、两个问题一起解决,修改server.xml,找到下列语句添加URIEncoding="GB18030",这样两个问题就一起解决了(不需要role=new String(role.getBytes("ISO-8859-1"),"GB2312");转化,得到的参数即为正常的中文) 

    <Connector acceptCount="100" connectionTimeout="20000" debug="0" disableUploadTimeout="true" enableLookups="false" maxSpareThreads="75" maxThreads="150" minSpareThreads="25" port="81"  redirectPort="8443"/>
 另外许多文章介绍可以添URIEncoding="UTF-8",这样是可以解决中文文件名问题,但是通过String role=request.getParameter("chara");得到url传递的参数时,得到的是UTF-8编码的,需要转为GB2312比较麻烦。

  以上是本人在使用中的总结,希望大家提供宝贵意见。
http://blog.csdn.net/lijiuu/archive/2007/02/25/1514354.aspx