Primefaces数据表未保存数据

我是Java新手，我尝试使用PrimeFacesDataTable在数据库中保存数据。我可以编辑datatable中的一些值，但在刷新后没有任何更改。这是我的密码

User.java

@Entity
@Table(name="users")
public class User {


    private int id;
    public String name = null;
    public String surname = null;
    public String username = null;
    public String description = null;
    public String email = null;
    public String phone = null;


@Id
 @GeneratedValue(strategy = GenerationType.IDENTITY)

public int getId(){
     return id;
}
public void setId(int id){
this.id = id;
}
@Column(name = "Name")
public String getName(){
return name;
}
public void setName(String Name){
this.name = Name;
}
@Column(name = "Surname")
public String getSurname(){     
return surname;

@ViewScoped
@SessionScoped
@javax.faces.bean.ManagedBean(name = "logonTest")
public class LogonTest implements Serializable{
     @PersistenceUnit(unitName="Webbeans_RESOURCE_LOCAL")
     private EntityManagerFactory emf;
    public List<User> getUserList() {
        return userList;
    }

    public void setUserList(List<User> userList) {
        this.userList = userList;
    }

    public List<User> userList = new ArrayList();


    @PostConstruct
    public void init(){
         EntityManager em = emf.createEntityManager();
         // Read the existing entries and write to console
         Query q = em.createQuery("SELECT u FROM User u");
         userList = q.getResultList();
         System.out.println("Size: " + userList.size());
    }

    public LogonTest() {

    }

}

import java.io.Serializable;  
import java.util.ArrayList;  
import java.util.List;  
import java.util.UUID;  





import javax.annotation.ManagedBean;
import javax.faces.application.FacesMessage;
import javax.faces.bean.ViewScoped;
import javax.faces.context.FacesContext;  





import org.primefaces.event.RowEditEvent;  

@ViewScoped
@javax.faces.bean.ManagedBean(name = "tableBean")

public class TableBean implements Serializable {  

    private List<User> carsSmall;  

    public TableBean() {  
        carsSmall = new ArrayList<User>();  

     populateRandomCars(carsSmall, 9);  
    }  

   private void populateRandomCars(List<User> list, int size) {  
      for(int i = 0 ; i < size ; i++)  
          list.add(new User());  
   }  



public List<User> getCarsSmall() {  
        return carsSmall;  
    }  

    public void onEdit(RowEditEvent event) {  
        FacesMessage msg = new FacesMessage(" Edited", ((User) event.getObject()).getName());  

        FacesContext.getCurrentInstance().addMessage(null, msg);  
    }  

    public void onCancel(RowEditEvent event) {  
        FacesMessage msg = new FacesMessage(" Cancelled", ((User) event.getObject()).getName());  

        FacesContext.getCurrentInstance().addMessage(null, msg);  
    }  
}  

LogonTest.java

@Entity
@Table(name="users")
public class User {


    private int id;
    public String name = null;
    public String surname = null;
    public String username = null;
    public String description = null;
    public String email = null;
    public String phone = null;


@Id
 @GeneratedValue(strategy = GenerationType.IDENTITY)

public int getId(){
     return id;
}
public void setId(int id){
this.id = id;
}
@Column(name = "Name")
public String getName(){
return name;
}
public void setName(String Name){
this.name = Name;
}
@Column(name = "Surname")
public String getSurname(){     
return surname;

@ViewScoped
@SessionScoped
@javax.faces.bean.ManagedBean(name = "logonTest")
public class LogonTest implements Serializable{
     @PersistenceUnit(unitName="Webbeans_RESOURCE_LOCAL")
     private EntityManagerFactory emf;
    public List<User> getUserList() {
        return userList;
    }

    public void setUserList(List<User> userList) {
        this.userList = userList;
    }

    public List<User> userList = new ArrayList();


    @PostConstruct
    public void init(){
         EntityManager em = emf.createEntityManager();
         // Read the existing entries and write to console
         Query q = em.createQuery("SELECT u FROM User u");
         userList = q.getResultList();
         System.out.println("Size: " + userList.size());
    }

    public LogonTest() {

    }

}

import java.io.Serializable;  
import java.util.ArrayList;  
import java.util.List;  
import java.util.UUID;  





import javax.annotation.ManagedBean;
import javax.faces.application.FacesMessage;
import javax.faces.bean.ViewScoped;
import javax.faces.context.FacesContext;  





import org.primefaces.event.RowEditEvent;  

@ViewScoped
@javax.faces.bean.ManagedBean(name = "tableBean")

public class TableBean implements Serializable {  

    private List<User> carsSmall;  

    public TableBean() {  
        carsSmall = new ArrayList<User>();  

     populateRandomCars(carsSmall, 9);  
    }  

   private void populateRandomCars(List<User> list, int size) {  
      for(int i = 0 ; i < size ; i++)  
          list.add(new User());  
   }  



public List<User> getCarsSmall() {  
        return carsSmall;  
    }  

    public void onEdit(RowEditEvent event) {  
        FacesMessage msg = new FacesMessage(" Edited", ((User) event.getObject()).getName());  

        FacesContext.getCurrentInstance().addMessage(null, msg);  
    }  

    public void onCancel(RowEditEvent event) {  
        FacesMessage msg = new FacesMessage(" Cancelled", ((User) event.getObject()).getName());  

        FacesContext.getCurrentInstance().addMessage(null, msg);  
    }  
}  

@ViewScoped
@会议范围
@javax.faces.bean.ManagedBean（name=“logonTest”）
公共类LogonTest实现了可序列化{
@PersistenceUnit（unitName=“Webbeans\u RESOURCE\u LOCAL”）
私人实体管理工厂emf；
公共列表getUserList（）{
返回用户列表；
}
public void setUserList（List userList）{
this.userList=userList；
}
public List userList=new ArrayList（）；
@施工后
公共void init（）{
EntityManager em=emf.createEntityManager（）；
//读取现有条目并写入控制台
Query q=em.createQuery（“从用户u中选择u”）；
userList=q.getResultList（）；
System.out.println（“Size:+userList.Size（））；
}
公共登录测试（）{
}
}

TableBean.java

@Entity
@Table(name="users")
public class User {


    private int id;
    public String name = null;
    public String surname = null;
    public String username = null;
    public String description = null;
    public String email = null;
    public String phone = null;


@Id
 @GeneratedValue(strategy = GenerationType.IDENTITY)

public int getId(){
     return id;
}
public void setId(int id){
this.id = id;
}
@Column(name = "Name")
public String getName(){
return name;
}
public void setName(String Name){
this.name = Name;
}
@Column(name = "Surname")
public String getSurname(){     
return surname;

@ViewScoped
@SessionScoped
@javax.faces.bean.ManagedBean(name = "logonTest")
public class LogonTest implements Serializable{
     @PersistenceUnit(unitName="Webbeans_RESOURCE_LOCAL")
     private EntityManagerFactory emf;
    public List<User> getUserList() {
        return userList;
    }

    public void setUserList(List<User> userList) {
        this.userList = userList;
    }

    public List<User> userList = new ArrayList();


    @PostConstruct
    public void init(){
         EntityManager em = emf.createEntityManager();
         // Read the existing entries and write to console
         Query q = em.createQuery("SELECT u FROM User u");
         userList = q.getResultList();
         System.out.println("Size: " + userList.size());
    }

    public LogonTest() {

    }

}

import java.io.Serializable;  
import java.util.ArrayList;  
import java.util.List;  
import java.util.UUID;  





import javax.annotation.ManagedBean;
import javax.faces.application.FacesMessage;
import javax.faces.bean.ViewScoped;
import javax.faces.context.FacesContext;  





import org.primefaces.event.RowEditEvent;  

@ViewScoped
@javax.faces.bean.ManagedBean(name = "tableBean")

public class TableBean implements Serializable {  

    private List<User> carsSmall;  

    public TableBean() {  
        carsSmall = new ArrayList<User>();  

     populateRandomCars(carsSmall, 9);  
    }  

   private void populateRandomCars(List<User> list, int size) {  
      for(int i = 0 ; i < size ; i++)  
          list.add(new User());  
   }  



public List<User> getCarsSmall() {  
        return carsSmall;  
    }  

    public void onEdit(RowEditEvent event) {  
        FacesMessage msg = new FacesMessage(" Edited", ((User) event.getObject()).getName());  

        FacesContext.getCurrentInstance().addMessage(null, msg);  
    }  

    public void onCancel(RowEditEvent event) {  
        FacesMessage msg = new FacesMessage(" Cancelled", ((User) event.getObject()).getName());  

        FacesContext.getCurrentInstance().addMessage(null, msg);  
    }  
}  

import java.io.Serializable；
导入java.util.ArrayList；
导入java.util.List；
导入java.util.UUID；
导入javax.annotation.ManagedBean；
导入javax.faces.application.FacesMessage；
导入javax.faces.bean.ViewScoped；
导入javax.faces.context.FacesContext；
导入org.primefaces.event.RowEditEvent；
@视域
@javax.faces.bean.ManagedBean（name=“tableBean”）
公共类TableBean实现可序列化的{
私家车购物中心；
公共TableBean（）{
carsSmall=newarraylist（）；
人口分布（carsSmall，9）；
}  
私有void populateRandomCars（列表，整数大小）{
对于（int i=0；i

如何将数据放入数据库？？也许必须刷新实体…xhtml在哪里？？？