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[英]How to pass an Object from a jsp page to a servlet without session property
[英]How to pass parameters from Servlet via Bean to JSP page with the help of Session?
如下所述,我對代碼進行了更改,如下例所示,但在JSP中未顯示名字和姓氏:
Servlet代碼:
//....
HttpSession session = request.getSession();
Person person = (Person) session.getAttribute("person");
if (person == null) {
person = new Person();
}
person.setNewId(newId);
person.setFirstName(firstName);
person.setLastName(lastName);
session.setAttribute("person", person);
RequestDispatcher rd = request.getRequestDispatcher("jsp Address");
rd.forward(request, response);
人豆代碼:
private int newId;
private String firstName;
private String lastName;
// Default Constructor
public Person() {}
public Person(int newId, String firstName, String lastName) {
setNewId(newId);
setFirstName(firstName);
setLastName(lastName);
}
//Getter and Setter Methods
public int getNewId() {return newId;}
public void setNewId(int newID) {this.newId = newID;}
public String getFirstName() {return firstName;}
public void setFirstName(String FirstName) {this.firstName = FirstName;}
public String getLastName() {return lastName;}
public void setLastName(String LastName) {this.lastName = LastName;}
並在JSP代碼中:
<jsp:useBean id="person" type="app.models.Person" scope="session">
<jsp:getProperty name="person" property="firstName" />
<jsp:getProperty name="person" property="lastName" />
</jsp:useBean>
此JSP頁面的輸出:無
預期輸出:firstName lastName
問題:
1. How can i pass parameters from Servlets to JSP via Bean with help of Session?
2. Is there a better way to do this code? I am using MVC architecture.
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