動態的,應該是我的主網頁上加載數據庫中的數據,而無需用戶提交後或get請求加載內容通過Servlet的
想這是我的JSP主頁,我想他從最受歡迎的文章數據庫
<body>
<div class="content">
<div class="article"></div>
<div class="article"></div>
<div class="article"></div>
<div class="article"></div>
</div>
</body>
和我的servlet將在我的數據庫選擇Connet,並返回一個對象填充我的jsp
public class ServLetLoad extends HttpServlet {
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
}
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
}
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
}
}
假設這種方法連接到數據庫,並返回一個禮ST文章
List<Article> articles = new ArticleContent ('article').findAll();
其中在servlet我會把這句話, 我怎麼會做我的servlet來無後調用或get請求和對象回到我的jsp?
編輯
我這樣做
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();
try {
this.factory = Persistence.createEntityManagerFactory("article");
EntityManager em = factory.createEntityManager();
TypedQuery<Article> article= em.createNamedQuery("Article.findAll", Article.class);
List<Article> result = article.getResultList();
request.setAttribute("Article",result);
RequestDispatcher view = request.getRequestDispatcher("index.jsp");
view.forward(request, response);
} finally {
out.close();
}
}
在JSP中我不知道恢復DATAS我嘗試這樣的事情
<%@page import="java.util.ArrayList"%>
<%@page import="java.util.List"%>
<%@page import="dao.Article"%>
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Home Page</title>
</head>
<body>
<% List<Article> list;
list = request.getAttribute("Article");
%>
</body>
</html>
大膽不需要;) – jotadepicas
只爲亮點的地方問題:) –
我已經編輯你的編輯代碼與鑄造** request.getAttribute **和循環 –