求助：现在在学SERVLET解决不了问题具体问题表现为表单页面不能跳转

遇到问题了也不知道问题所在，所以不知道如何表达，现在只有把全部代码复制上来，望各位大虾帮忙下（具体问题表现为表单不能跳转）
ShowParameters.html代码
<html>
        <head>
                <title>A Sample Form Using Post</title>
  </head>
  <body bgcolor="#FDF5E6">
          <h1 align="center">A Sample Form Using Post</h1>
          
  <form aciton="ShowParameters" method="get">
          Item Number: <input type="text" name="itemNum"><br>
          Quantity: <input type="text" name="quantity"><br>
          Price Each: <input type="text" name="price" value="$"<br>
          <hr>
          First Name: <input type="text" name="firstname"><br>
          Last Name: <input type="text" name="lastname"><br>
          Middle Initial: <input type="text" name="initial"><br>
          Shipping Address:
          <textarea name="address" rows=3 cols=40></textarea><br>
          Credit Card:<br>
          &nbsp;&nbsp;<input type="radio" name="cardType" value="Visa">Visa<br>
          &nbsp;&nbsp;<input type="radio" name="cardType" value="Master Card">Master Card<br>
          &nbsp;&nbsp;<input type="radio" name="cardType" value="Amex">American Express<br>
          &nbsp;&nbsp;<input type="radio" name="cardType" value="Discover">Discover<br>
          &nbsp;&nbsp;<input type="radio" name="cardType" value="Java SmartCard">Java SmartCard<br>
          Credit Card Number:
          <input type="password" name="cardNum"><br>
          Repeat Credit Card Number:
          <input type="password" name="cardNum"><br><br>
          <center>
                  <input type="submit" value="Submit Order">
    </center>
   </form>
  </body>
< ml>web.xml部分代码
<servlet>
        <servlet-name>ShowParameters<servlet-name>
        <servlet-class>ShowParameters<servlet-class>
    < rvlet>
   <servlet-mapping>
        <servlet-name>ShowParameters<servlet-name>
        <url-pattern>/ShowParameters</url-pattern>
    <servlet-mapping>ShowParameters.java代码import java.io.IOException;
import java.io.PrintWriter;
import java.util.Enumeration;import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class ShowParameters extends HttpServlet{        @Override
        protected void doGet(HttpServletRequest req, HttpServletResponse resp)
                        throws ServletException, IOException {
                resp.setContentType("text ml;charset=gbk");
                String title="Read All Request Parameters";
                PrintWriter out=resp.getWriter();
                out.println("<html><head><title>读取所有参数</title></head>"
                                +"<body bgcolor='#FDF5E6'>\n"+"<h1 align=center>"+title
                                +"</h1>\n"+"<table border=1 align=center>\n"
                                +"<tr bgcolor=\"#ffad00\">\n"
                                +"<th>Parameter Name<th>Parameter Value(s)");
                Enumeration paramNames=req.getParameterNames();
                while(paramNames.hasMoreElements()){
                        String paramName=(String)paramNames.nextElement();
                        out.println("<tr><td>"+paramName+"\n<td>");
                        String[] paramValues=req.getParameterValues(paramName);
                        if(paramValues.length==1){
                                String paramValue=paramValues[0];
                                if(paramValue.length()==0){
                                        out.println("<i>No Value</i>");
                                }else{
                                        out.println(paramValue);
                                }
                        }else{
                                out.println("<ul>");
                                for(int i=0;i<paramValues.length;i++){
                                        out.println("<li>"+paramValues);
                                }
                                out.println("</ul>");
                        }
                }
                out.println("</table>\n</body>><html>");
        }        @Override
        protected void doPost(HttpServletRequest req, HttpServletResponse resp)
                        throws ServletException, IOException {
                doGet(req, resp);
        }
        
}