帮忙看看为何Servlet不运行？

hccpro 2001-06-21 03:02:00

\index.htm:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE>示例表单</TITLE>
</HEAD>

<BODY BGCOLOR="#FDF5E6">
<H1 ALIGN="CENTER">用POST方法发送数据的表单</H1>

<FORM ACTION="ShowParameters"
METHOD="POST">
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>
<INPUT TYPE="RADIO" NAME="cardType"
VALUE="Visa">Visa<BR>
<INPUT TYPE="RADIO" NAME="cardType"
VALUE="Master Card">Master Card<BR>
<INPUT TYPE="RADIO" NAME="cardType"
VALUE="Amex">American Express<BR>
<INPUT TYPE="RADIO" NAME="cardType"
VALUE="Discover">Discover<BR>
<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>
</HTML>

\WEB-INF\classes\ShowParameters.class

点击submit按钮后出现“该页无法显示”字样

为何？？？

class路径已设完，运行别的程序和编译ShowParameters.java均正常

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hccpro 2001-06-22

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搞定啦！

谢谢各位，原来是前面没写servlet

violin 2001-06-21

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你把index.htm的后缀名改为jsp
...
action=<%=request.getContextPath() + "/servlet/ShowParameters"%>

hccpro 2001-06-21

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俺把上面的<FORM ACTION="ShowParameters"
METHOD="POST">
改成：<FORM ACTION="/ShowParameters"
METHOD="POST">
也不行。

抱歉，提示应该是：“找不到此页”

这是servlet代码：

import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.util.*;

public class ShowParameters extends HttpServlet {
public void doGet(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html");
PrintWriter out = response.getWriter();
String title = "读取所有请求参数";
out.println(ServletUtilities.headWithTitle(title) +
"＜BODY BGCOLOR=＼"#FDF5E6＼"＞＼n" +
"＜H1 ALIGN=CENTER＞" + title + "＜/H1＞＼n" +
"＜TABLE BORDER=1 ALIGN=CENTER＞＼n" +
"＜TR BGCOLOR=＼"#FFAD00＼"＞＼n" +
"＜TH＞参数名字＜TH＞参数值");
Enumeration paramNames = request.getParameterNames();
while(paramNames.hasMoreElements()) {
String paramName = (String)paramNames.nextElement();
out.println("＜TR＞＜TD＞" + paramName + "＼n＜TD＞");
String[] paramValues = request.getParameterValues(paramName);
if (paramValues.length == 1) {
String paramValue = paramValues[0];
if (paramValue.length() == 0)
out.print("＜I＞No Value＜/I＞");
else
out.print(paramValue);
} else {
out.println("＜UL＞");
for(int i=0; i＜paramValues.length; i++) {
out.println("＜LI＞" + paramValues[i]);
}
out.println("＜/UL＞");
}
}
out.println("＜/TABLE＞＼n＜/BODY＞＜/HTML＞");
}

public void doPost(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException {
doGet(request, response);
}
}

dule_yu 2001-06-21