我正在尝试使用数组列表中的数据填充 html 数据,但遇到了一些困难。我已经加载了数据并将其存储在我的数组列表中,但是当启动我的程序时,表是空的。有人可以帮我解决这个问题吗?我已经尝试用谷歌搜索我的问题,但我似乎找不到答案。
这是我加载数据并将其填充到数组列表中的位置
import java.io.*;
import java.util.List;
import javax.servlet.*;
import javax.servlet.annotation.*;
import javax.servlet.http.*;
@WebServlet("/registered-class")
public class myRegist extends HttpServlet{
@Override
public void doGet(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException {
getInfo registerStu = new findInfo();
String ssn = request.getParameter("ssn");
String fullName = registerStu.getFullName(ssn);
String phone = registerStu.getPhone(ssn);
List<StudentClass> classList = registerStu.loadClass(ssn);
response.setContentType("text/html");
PrintWriter out = response.getWriter();
String docType =
"<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0 " +
"Transitional//EN\">\n";
StudentClass stu = new StudentClass();
request.setAttribute("message", classList);
request.getRequestDispatcher("/table.jsp").forward(request,response);
//ptints out info about course
//out.println(classList.get(0));
/*StudentInfo info = new StudentInfo(ssn, fullName, phone);
HttpSession session = request.getSession();
session.setAttribute("student", info);
String address = null;
if (fullName == null) {
address = "/myRegist.jsp";
}
else if (fullName != null) {
address = "/myRegist.jsp";
}
RequestDispatcher dispatcher =
request.getRequestDispatcher(address);
dispatcher.forward(request, response);*/
}
}
我的 html 表格
<html>
<body>
<head>
<title>
View Books
</title>
</head>
<body>
<table border=2>
<tr>
<th>Book ID</th>
<th>Title</th>
<th>Author</th>
<th>No. of copies AVAILABLE</th>
<th>Number of favourites</th>
</tr>
<tr>
<td><%=b.bookID%></td>
<td><%=b.bookTitle%></td>
<td><%=b.bookAuthor%></td>
<td><%=b.bookCopies%></td>
<td><%=b.bookFavs%></td>
</tr>
<%
}
%>
</table>
</body>
</html>
最佳答案
尽管 @olivakyle 的答案是正确的,但我更喜欢使用 jSTL 标签而不是 scriplet:它可以使 JSP 不那么困惑:
<!DOCTYPE html>
<%@page contentType="text/html"%>
<%@page pageEncoding="UTF-8"%>
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<html>
<body>
<head>
<title>
View Books
</title>
</head>
<body>
<table border=2>
<tr>
<th>Student ID</th>
<th>Name</th>
</tr>
<c:forEach var="stu" items="${message}">
<tr>
<td>${stu.id}</td>
<td>${stu.name}</td>
</tr>
</c:forEach>
</table>
</body>
</html>
关于java - 如何使用 servlet 将数组列表中的数据填充到 html 中?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/59363812/