1.编码问题:
(1)首先确定JSP页面头部是否有:<%@ page contentType="text/html; charset=GBK" %>
(2)类似这样的转码:
String param= new String(request.getParameter("param").getBytes("ISO-8859-1"), "GBK");
(3)添加filter字符过滤器,具体做法:
先添加类:
import
javax.servlet.Filter;
import
javax.servlet.FilterConfig;
import
javax.servlet.ServletException;
import
javax.servlet.ServletRequest;
import
javax.servlet.ServletResponse;
import
javax.servlet.FilterChain;
import
java.io.IOException;
import
org.apache.log4j.Logger;
import
java.net.URLEncoder;


/** */
/**
* 请求中中文字符串过滤类
*/

public
class
SetEncodingFilter

implements
Filter
...
{
private Logger logger=Logger.getLogger(this.getClass());


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

public void doFilter(ServletRequest request, ServletResponse response,

FilterChain chain) throws IOException, ServletException ...{
logger.info("请求转码过滤器===================");
request.setCharacterEncoding("gb2312");
chain.doFilter(request,response);
}


public void destroy() ...{
}
}
再注册类到XML里:
<
filter
>
<
filter-name
>
Set Encoding
</
filter-name
>
<
filter-class
>
SetEncodingFilter
</
filter-class
>
</
filter
>
<
filter-mapping
>
<
filter-name
>
Set Encoding
</
filter-name
>
<
url-pattern
>
/*
</
url-pattern
>
</
filter-mapping
>
(4)如果是通过"a.jsp?param=中文"传递参数,也就是通常的GET请求,则需要:
a.在传参数之前先把参数进行转码:java.net.URLEncoder.encode(param);
取值用java.net.URLDncoder.dncode(param);再转回中文
b.在你的Tomcat目录-->conf目录-->server.xml里找出这段:
<
Connector
port
="8080"
maxThreads
="150"
minSpareThreads
="25"
maxSpareThreads
="75"
enableLookups
="false"
redirectPort
="8443"
acceptCount
="100"
debug
="0"
connectionTimeout
="20000"
disableUploadTimeout
="true"
<!--在里边加上这个参数--
>
URIEncoding="gb2312"
/>
(5)数据库乱码,首先确定你在插入数据库之前是中文,解决办法:
在数据库的数据库连接URL中加上useUnicode=true&characterEncoding=GBK就OK了。
如果在读取的时候出现乱码用第二种方法解决.