Java 在Servlet上调用DAO方法_Java_Hibernate_Jsp_Servlets_Dao

Java 在Servlet上调用DAO方法

java hibernate jsp servlets

Java 在Servlet上调用DAO方法,java,hibernate,jsp,servlets,dao,Java,Hibernate,Jsp,Servlets,Dao,我正在制作一个网页，用户可以通过rentID搜索租用的产品，在Servlet中，我想调用一个DAO方法，根据该rentID查找租用的产品，如果找到或没有租金，则将用户重定向到一个新网页这是JSP，用户通过ID搜索产品 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org /TR/html4/loose.dtd"> <html> <head> &l

我正在制作一个网页，用户可以通过rentID搜索租用的产品，在Servlet中，我想调用一个DAO方法，根据该rentID查找租用的产品，如果找到或没有租金，则将用户重定向到一个新网页

这是JSP，用户通过ID搜索产品

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org   /TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
<h3>Find Rent</h3><br>

<form  action="FindRent" method="GET">
<fieldset>
<p>
<label for="id">Rent ID</label>
<input type="text" name="id"/>
</p>
<p>
<input type="submit" value="Search" />
</p>
</fieldset>

</form>

</body>
</html>

这就是Servlet。如何调用该方法

public class FindRent extends HttpServlet {
private static final long serialVersionUID = 1L;

/**
 * @see HttpServlet#HttpServlet()
 */
public Rent find() {
    super();
    // TODO Auto-generated constructor stub
}

/**
 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
 */
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

嗯，创建RentHibernateDao对象，并调用适当的方法，根据需要返回HTML。

public class FindRent extends HttpServlet {
private static final long serialVersionUID = 1L;

/**
 * @see HttpServlet#HttpServlet()
 */
public Rent find() {
    super();
    // TODO Auto-generated constructor stub
}

/**
 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
 */
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    int rentId= Integer.parseInt(request.getParameter("id"));       // capture the rent id
    RentDao dao= new RentHibernateDao();        // create the dao object
    dao.find(rentId);   // If successful, it returns you an object of Rent class
   // means Id is there
  // put your processing logic here
    request.getRequestDispatcher("desiredpage.jsp").forward(request, response);         // forward to your desired page

   }