Question

我有两张表 AFFILIATE （ idaff （自动增量），姓名，地址......）和他的 COTISATION （ ID 下，值，..）

我制作了两个单独的jsp表单和两个单独的Servlet，每个表单从jsp表单收集信息并将其插入相关表格。

我希望能够选择/显示AFFILIATE和他受影响的COTISATION（s），

I wanted to use idaff as a foreign key in COTISATION table, but i don't know how
 to retrieve it from the first servlet (GestAffiliate.java) to the next servlet 
(GestCotisation.java) to be able to insert it in COTISATION Table.

感谢您的建议。

Servlet代码：

protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    // TODO Auto-generated method stub
    PrintWriter out =response.getWriter();
    /*response.setContentType("text/html");
    out.println("<HTML>");
    out.println("<HEAD> <TITLE> TATATATATA </TITLE></HEAD>");
    out.println("</HTML>"); */

    Affilie newaff=new Affilie();
    newaff.setNom(request.getParameter("nom"));
    newaff.setPrenom(request.getParameter("prenom"));
    newaff.setNumaffiliation(request.getParameter("numaffiliation"));
    newaff.setCin(request.getParameter("cin"));

    newaff.setPpr(request.getParameter("ppr"));
    newaff.setNumaffilregimebase(request.getParameter("numaffregbase"));
    newaff.setMatriculeemployeur(request.getParameter("matriculeemployeur"));
    newaff.setNumpension(request.getParameter("numpension"));

    newaff.setDatenaissance(request.getParameter("datenaissance"));
    newaff.setTelephone(request.getParameter("telephone"));
    newaff.setAdresse(request.getParameter("Adresse"));
    newaff.setVille(request.getParameter("ville"));

    newaff.setCodepostal(request.getParameter("codepostal"));
    newaff.setEtatcivil(request.getParameter("etatcivil"));
    newaff.setRegime(request.getParameter("regime"));       

    Connection connection=null;
    try{
    Class.forName("com.mysql.jdbc.Driver");
    }
    catch (ClassNotFoundException e) {
        e.printStackTrace();
    }
    try{
        connection=DriverManager.getConnection("jdbc:mysql://localhost:3306/authentification","root","");
    }
    catch (SQLException e) {
        e.printStackTrace();
    }
    try {
        Statement statement=connection.createStatement();
        statement.executeUpdate("INSERT INTO `affilie` VALUES (0,'"+newaff.getNom()+"','"+newaff.getPrenom()+"','"+newaff.getNumaffiliation()+"','"+newaff.getCin()+"','"+newaff.getPpr()+"','"+newaff.getNumaffilregimebase()+"','"+newaff.getMatriculeemployeur()+"','"+newaff.getNumpension()+"','"+newaff.getDatenaissance()+"','"+newaff.getTelephone()+"','"+newaff.getAdresse()+"','"+newaff.getVille()+"','"+newaff.getCodepostal()+"','"+newaff.getEtatcivil()+"','"+newaff.getRegime()+"')");
    // ('"+newaff.getNom()+"','"+newaff.getPrenom()+"','"+newaff.getNumaffiliation()+"','"+newaff.getCin()+"','"+newaff.getPpr()+"','"+newaff.getNumaffilregimebase()+"','"+newaff.getMatriculeemployeur()+"','"+newaff.getNumpension()+"','"+newaff.getDatenaissance()+"','"+newaff.getTelephone()+"','"+newaff.getAdresse()+"','"+newaff.getVille()+"','"+newaff.getCodepostal()+"','"+newaff.getEtatcivil()+"','"+newaff.getRegime()+"'
        request.getRequestDispatcher("Cotisation.jsp").forward(request, response);

    }
    catch (SQLException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

    out.println(" AFFiliation PERFECTLY DONE ! ");
}
enter code here

Answer 1

在servlet GestAffiliate.java

中设置请求中idaff的值

request.setAttribute("idaff",idaff);

并将请求发送到jsp“Cotisation.jsp”并使用

在jsp中的隐藏参数中设置值

<input type="hidden" name="idaff" value=${requestScope.idaff}>

并且此jsp转发到您的第二个servlet，您可以使用

检索该值

request.getParameter("idaff")

你必须在jsp页面顶部的jsp页面上添加它

<%@ taglib uri="http://java.sun.com/jsp/jstl/core" 
    prefix="c" %>

因为在jstl中提供了requestcope，但它可以正常工作

从一个servlet向另一个servlet发送一个值（例如id）（jsp + servlet + mysql）

1 个答案: