requestparam.java

来自「jsp数据库编程入门」· Java 代码 · 共 57 行

JAVA

57 行

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

public class RequestParam extends HttpServlet 
{
    public void doGet(HttpServletRequest request, HttpServletResponse 
                          response)throws IOException, ServletException
    {
        response.setContentType("text/html");
        PrintWriter out = response.getWriter();
        out.println("<html>");
        out.println("<head>");
        out.println("<title>Post request parameters</title>");
        out.println("</head>");
        out.println("<body>");
        out.println("<h3>This is Example of Posting request 
                        parameters.</h3>");

        //获取表单传递过来的参数值
        String name=request.getParameter("yourname");
        String age=request.getParameter("age");

        //如果参数非空，则输出参数值
        if(name!=null||age!=null)
        {
           out.println("<p>Name:"+name+"</p>");
           out.println("<p>Age:"+age+"</p>");
        }
        //否则，显示空值信息
        else
        {
           out.println("No Form Data Posted.");
        }
        //输出表单的HTML代码
        out.println("<center>");
        out.print("<form action=\"");
        out.print("RequestParam\" ");
        out.println("method=POST>");
        out.println("<p>Name:<input type=text size=20 name=yourname></p>");
        out.println("<p>Age:<input type=text size=20 name=age></p>");
        out.println("<p><input type=submit></p>");
        out.println("</form>");
        out.println("</center>");
        out.println("</body>");
        out.println("</html>");
    }

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

requestparam.java - 源码说明

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