java - ebean 的更新方法在 playframework 中不起作用

Question

最近开始使用Play framework 2.3.8。

但是模型的更新是我遇到了麻烦，没有很好地工作。

顺便说一下，save 方法有效。

更新不适用于如下代码。(不会持久化到数据库。)

User user = User.findByEmail(email);
user.remoteAddress = remoteAddress;
user.userAgent     = userAgent;
user.latitude      = latitude;
user.longitude     = longitude;
user.lastLoginAt   = new Date();
user.update();

但是以下代码将按预期工作。

User newUser = new User();
newUser.id = user.id;
newUser.remoteAddress = remoteAddress;
newUser.userAgent     = userAgent;
newUser.latitude      = latitude;
newUser.longitude     = longitude;
newUser.lastLoginAt   = new Date();
newUser.update();

为什么我不能更新原始实例？

用户类如下。

package models.entities;

import java.util.*;

import javax.persistence.*;

import com.avaje.ebean.annotation.*;

import play.db.ebean.*;
import play.db.ebean.Model.Finder;

import play.data.validation.Constraints.*;

import play.Logger;

import models.services.*;

/**
* @author satouf
*/
@Entity
@Table(name="user")
public class User extends Model {

  @Id
  public Long id;

  @Column(nullable = false, columnDefinition = "varchar(32)")
  public String userIdentifier;

  @Column(nullable = false, columnDefinition = "varchar(255)")
  public String loginId;

  @Column(columnDefinition = "text")
  public String loginPassword;

  @Column(columnDefinition = "varchar(64)")
  public String handleName;

  @Email
  @Column(nullable = false, columnDefinition = "varchar(255)")
  public String email;

  @Column(nullable = false, columnDefinition = "smallint default 0")
  public short status;

  @Column(columnDefinition = "varchar(64)")
  public String lastRemoteAddress;

  public String lastUserAgent;

  public Date lastLoginAt;

  public double latitude;

  public double longitude;

  @UpdatedTimestamp
  public Date updatedAt;

  @CreatedTimestamp
  public Date createdAt;

  public static Finder<Long, User> finder = new Finder<Long, User>(Long.class, User.class);

  @Override
  public String toString(){
    return ("[id: " + id + ", userIdentifier: " + userIdentifier +     ",     loginId: " + loginId + ", handleName: "
      + handleName + ", latitude: " + latitude + ", longitude: " +     longitude + "]");
  }

}

Answer 1

由于某些奇怪的原因，直接访问成员无法更新 ebean。

添加setter，例如:

private setUserAgent(String val) {  
    this.userAgent = val;  
}  

并调用:

user.setUserAgent(your_val);  
user.update();