问session.save()方法的语法错误

EN

package com.wily.model;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.SequenceGenerator;
import javax.persistence.Table;

@Entity
@Table(name="user")
@SequenceGenerator(sequenceName="user_id_user_seq", name="userSequence")
public class User {

    @Id
    @Column(name="id_user")
    @GeneratedValue(generator="userSequence")
    private int id;

    @Column(name="username")
    private String username;

    @Column(name="password")
    private String password;

    @Column(name="email")
    private String email;

    public int getId() {
        return id;
    }
    public void setId(int id) {
        this.id = id;
    }
    public String getUsername() {
        return username;
    }
    public void setUsername(String username) {
        this.username = username;
    }
    public String getPassword() {
        return password;
    }
    public void setPassword(String password) {
        this.password = password;
    }
    public String getEmail() {
        return email;
    }
    public void setEmail(String email) {
        this.email = email;
    }

}