java - 如何在没有 JSTL 的情况下迭代 JSP 上的数组列表

Question

//我已从 MySQL 检索结果并创建了数组列表用户。我已发送此//US er 数组列表并通过请求响应对象发送它。现在我需要在 JSP 页面上显示它。 //1.没有JSTL //2.使用JSTL

//表名是user_reg，有四个字段id,username,password,email。 //请举例说明。我需要显示jsp页面中的所有字段。但我不想//在 JSP 上执行 jdbc 工作

 package kinder.dto;

    public class User {
        private String id;

    private String userName;
    private String saltedkey;
    private String emailId;
    private String legalName;

    public String getId() {
        return id;
    }
    public void setId(String id) {
        this.id = id;
    }
    public String getLegalName() {
        return legalName;
    }
    public void setLegalName(String legalName) {
        this.legalName = legalName;
    }
    public String getEmailId() {
        return email;
    }enter code here`
    public void setEmailId(String emailId) {
        this.emailId = emailId;
    }
    public String getUserName() {
        return userName;
    }
    public void setUserName(String userName) {
        this.userName = userName;
    }
    public String getPassword() {
        return saltedkey;
    }
    public void setPassword(String password) {
        this.saltedkey = password;
    }




    }


    //dto

     package kinder.dto;

    public class User {
        private String id;

    private String userName;
    private String saltedkey;
    private String emailId;
    private String legalName;

    public String getId() {
        return id;
    }
    public void setId(String id) {
        this.id = id;
    }
    public String getLegalName() {
        return legalName;
    }
    public void setLegalName(String legalName) {
        this.legalName = legalName;
    }
    public String getEmailId() {
        return emailId;
    }
    public void setEmailId(String emailId) {
        this.emailId = emailId;
    }
    public String getUserName() {
        return userName;
    }
    public void setUserName(String userName) {
        this.userName = userName;
    }
    public String getPassword() {
        return saltedkey;
    }
    public void setPassword(String password) {
        this.saltedkey = password;
    }

}

//servlet

protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        try {
            List<User> users = UserDAO.list();
            request.setAttribute("users", users); // Will be available as ${products} in JSP
            request.getRequestDispatcher("loginSuccess.jsp").forward(request, response);
        } catch (SQLException | ClassNotFoundException e) {
            throw new ServletException("Cannot obtain products from DB", e);
        }
    }

//如何在JSP页面中获取它

Answer 1

get some like this :

on jsp psge :

<% ArrayList<user> userList=(ArrayList<user>) request.getAttribute("user");
        Iterator<user> iter = userList.iterator();
        while(iter.hasNext()){

            user user = iter.next();

使用 pojo 类访问它:

user.getUsername(); user.getPassword();

    %>