过滤器问题，小弟菜鸟
我想做一个HTML页面里面有一个文本框和按钮，然后单击按钮把值传到servlet里输出。我想通过过滤器实现，如果文本框里的值为空则回到html页面里，否则去servlet里。如何实现？只要想看过滤器如何取文本框的值
不行呀
System.out.println(request.getParameter("textname"));
结果是null
2006-09-17 18:25
2006-09-17 19:12
2006-09-17 19:15
HTML代码
<html>
<body>
<form name="form1" action="\WebModule1\servlet1" method="POST">
<table>
<tr>
<td><input type="text" name="name"></td>
<td><input type="submit" name="submit"></td>
</tr>
</table>
</form>
</body>
</html>
***********************************************************
servlet
package eww;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
public class Servlet1 extends HttpServlet {
private static final String CONTENT_TYPE = "text/html; charset=GBK";
//Initialize global variables
public void init() throws ServletException {
}
//Process the HTTP Get request
public void doGet(HttpServletRequest request, HttpServletResponse response) throws
ServletException, IOException {
response.setContentType(CONTENT_TYPE);
PrintWriter out = response.getWriter();
out.println("<html>");
out.println("<head><title>Servlet1</title></head>");
out.println("<body bgcolor=\"#ffffff\">");
out.println(request.getParameter("name"));
out.println("</body>");
out.println("</html>");
out.close();
}
//Process the HTTP Post request
public void doPost(HttpServletRequest request, HttpServletResponse response) throws
ServletException, IOException {
doGet(request, response);
}
//Clean up resources
public void destroy() {
}
}
*************************************************
过滤器
package eww;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
public class Filter1 extends HttpServlet implements Filter {
private FilterConfig filterConfig;
//Handle the passed-in FilterConfig
public void init(FilterConfig filterConfig) throws ServletException {
this.filterConfig = filterConfig;
}
//Process the request/response pair
public void doFilter(ServletRequest request, ServletResponse response,
FilterChain filterChain) {
System.out.println(request.getParameter("name"));
try {
filterChain.doFilter(request, response);
} catch (ServletException sx) {
filterConfig.getServletContext().log(sx.getMessage());
} catch (IOException iox) {
filterConfig.getServletContext().log(iox.getMessage());
}
}
//Clean up resources
public void destroy() {
}
}
2006-09-17 19:18
2006-09-17 19:18