jsp ,servlet 中文乱码问题

有时候jsp 网页中出现中文乱码现象，servlet 接受的数据如果是中文时会出现乱码。解决中文乱码问题有以下方法；

1.在页面设置

pageEncoding="gbk"

2.在servlet设置

request.setCharacterencoding("gbk");

response.rsetcharacterencoding("gbk");

3.在Tomcat 的conf\server.xml 中配置

 <Connector port="8080" protocol="HTTP/1.1" 
               connectionTimeout="20000" 
               redirectPort="8443" URIEncoding="gb2312"/>

4.使用filter过滤器 代码如下：

web.xml 代码：

<filter>
<filter-name>MyFilter</filter-name>
<filter-class>ma.jun.bean.MyFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>gbk</param-value>
</init-param>
</filter>

<filter-mapping>
<filter-name>MyFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>

Java代码

package ma.jun.bean;


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 MyFilter implements Filter {
private String encoding=null;
public void destroy() {
// TODO Auto-generated method stub


}


public void doFilter(ServletRequest request, ServletResponse response,
FilterChain dochain) throws IOException, ServletException {
// TODO Auto-generated method stub
request.setCharacterEncoding(encoding);
response.setCharacterEncoding(encoding);
dochain.doFilter(request, response);
}


public void init(FilterConfig config) throws ServletException {
// TODO Auto-generated method stub
this.encoding =config.getInitParameter("encoding");
}


}