(1):用过滤器
新建一个类ChineseFilter
//生成自己的过滤器
package org.perfect.struts.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.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class ChineseFilter extends HttpServlet implements Filter {
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);
}
}
编译后把.class文件放到项目的web-inf的classes中
然后在修改web.xml
加上
<filter>
<filter-name>ChineseFilter</filter-name>
<filter-class>org.perfect.struts.filters.ChineseFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>GBK</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>ChineseFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
重启服务器,应该可以了
第二种方式是:
把获取来的参数重新编码
String username = new String(request.getParameter("username").getBytes("iso-8859-1"),"GBK");
这样也可以了