jsp form 表单或超链接传参数中文乱码问题小结

最近遇到一些form表单或超链接传参数，中文参数乱码的问题，现总结如下：

1、form表单，post方式

解决方法：发送和接收方选用相同编码格式，如GBK

2、form表单，不设定方式

解决方法：过滤器

CharacterEncodingFilter.java 编码处理类

package 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;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class CharacterEncodingFilter extends HttpServlet implements Filter {
private static final long serialVersionUID = 1L;
private FilterConfig filterConfig;

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

public void doFilter(ServletRequest request, ServletResponse response, FilterChain filterChain) {
try {
String encoding=filterConfig.getInitParameter("encoding");//从WEB.xml配置文件中取出参数，这样我们可以通过配置修改编码格式．
request.setCharacterEncoding(encoding);//设置请求的编码格式
//System.out.println(encoding);
filterChain.doFilter(request, response);//关键
} catch (ServletException sx) {
filterConfig.getServletContext().log(sx.getMessage());
} catch (IOException iox) {
filterConfig.getServletContext().log(iox.getMessage());
}
}

public void destroy() { }

protected void doGet(HttpServletRequest arg0, HttpServletResponse arg1) throws ServletException, IOException {
super.doGet(arg0, arg1);
}

protected void doPost(HttpServletRequest arg0, HttpServletResponse arg1) throws ServletException, IOException {
super.doPost(arg0, arg1);
}
}

web.xml配置

<filter>
<filter-name>CharacterEncoding</filter-name>
<filter-class>filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>GBK</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>CharacterEncoding</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>

3、如上述方法仍有问题，则检查tomcat下conf中的server.xml文件

解决方法：

<Connector port="8080" protocol="HTTP/1.1"

connectionTimeout="20000"

redirectPort="8443" URIEncoding="GBK" />

以上内容位个人见解，经过测试，仅供参考。