//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
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();
%>
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