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Thread: [Help] How can I call a servet from jsp

  1. #1
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    Default [Help] How can I call a servet from jsp

    I created : index.jsp in Web Pages , and GetThreeParam.java in Source Package . I can not call GetThreeParam.java from the index.jsp . Please Help me

    GetThreeParam.java

    /*
    * To change this template, choose Tools | Templates
    * and open the template in the editor.
    */

    import java.io.IOException;
    import java.io.PrintWriter;
    import javax.servlet.ServletException;
    import javax.servlet.annotation.WebServlet;
    import javax.servlet.http.HttpServlet;
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;

    /**
    *
    * @author Du
    */
    @WebServlet(name = "GetThreeParam", urlPatterns = {"/GetThreeParam"})
    public class GetThreeParam extends HttpServlet {

    /**
    * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
    * @param request servlet request
    * @param response servlet response
    * @throws ServletException if a servlet-specific error occurs
    * @throws IOException if an I/O error occurs
    */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
    response.setContentType("text/html;charset=UTF-8");
    PrintWriter out = response.getWriter();
    //String title = "Reading three request parameters";
    out.println(
    "<H1 Align=CENTER>" + "Reading three request parameters" + "</H1>\n" + "<UL>\n"
    + "<LI><B>param1</B>:"
    + request.getParameter("tx1") + "\n"
    + "<LI><B>param2</B>:"
    + request.getParameter("tx2") + "\n"
    + "<LI><B>param3</B>:"
    + request.getParameter("tx3") + "\n"
    + "</UL>\n+</BODY></HTML>");
    try {
    } finally {
    out.close();
    }
    }

    Index.jsp:

    <%--
    Document : index
    Created on : Oct 11, 2012, 2:55:43 AM
    Author : Du
    --%>

    <%@page contentType="text/html" pageEncoding="UTF-8"%>
    <!DOCTYPE html>
    <html>
    <head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    <title>JSP Page</title>

    </head>
    <body>
    <form method="post" action="GetThreeParam.java" >
    <div style="width: 1000px;">
    <h2>
    Collect three Parameter
    </h2><hr>
    <div style="width: 150px;float: left;line-height: 30px">
    First Parameter<br>
    Second Parameter<br>
    Third Parameter<br>
    </div>
    <div style="width: 850px;float: left;line-height: 30px">
    <input type="text" name="tx1"><br>
    <input type="text" name="tx2"><br>
    <input type="text" name="tx3"><br>
    <input type="submit"></input>
    </div>

    </div>
    </form>
    </body>
    </html>


  2. #2
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    Default Re: [Help] How can I call a servet from jsp

    In form tag <form name=..... method=..... action="/servlet/servletname">

  3. #3
    Junior Member lostmemory's Avatar
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    Default

    .java is source code file of java
    it can not be executed by jvm.
    u must register your servlet into web.xml
    and use it by url-pattern.

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