Servlet jsp当中给出一个doPost例子。

3.doGet，doPost和service的用法

1）doPost的实例

马克-to-win:我们看到了doGet的用法。这节，我们看看doPost的用法。在Eclipse下，点击你项目名称左边的小十字符号，找到WebContent，右击它。New/HTML File:

eclipse会为我们生成一个空的html。我们再加入一些代码，成为：

例：3.3.1

hello.html：

<html>
<body>
<FORM ACTION="MarkToWinServletHello1"
METHOD="POST">
First Name:
<INPUT TYPE="TEXT" NAME="firstName"><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="SUBMIT" VALUE="Submit Order">
</CENTER>
</FORM>
</body>
</html>

更改一下我们的ServletHello1.java,成为:

package com;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class ServletHello1 extends HttpServlet {undefined
    protected void doPost(HttpServletRequest request,
            HttpServletResponse response) throws IOException {undefined
            String fn=request.getParameter("firstName");
            String ad=request.getParameter("address");
            String ct=request.getParameter("cardType");
            PrintWriter pw=response.getWriter();
            pw.println(fn+" "+ad+" "+ct);
    }
}