我正在尝试测试一个使用休眠和注释的简单应用程序。我有以下具有以下外键约束的数据库表。
create table user_info
(
mobile_number varchar(16) primary key,
gender char(1),
language varchar(4))
create table user_order_info
(order_id integer(16) not null primary key auto_increment,
mobile_number varchar(16) not null,
location_name varchar(32) not null,
foreign key(mobile_number) references user_info(mobile_number),
create table user_queue_order_info
(queue_id integer(16) not null primary key auto_increment,
order_id integer(16),
mobile_number varchar(16) not null,
order_value integer(8) not null,
foreign key(mobile_number) references user_info(mobile_number),
foreign key(order_id) references user_order_info(order_id) on delete cascade)
而上表各自的实体表如下:
@Entity
@Table(name = "user_info")
public class UserInfo implements Serializable {
private String mobileNumber;
private char gender;
private String language;
//getters and setters and constructors
}
@Entity
@Table(name = "user_order_info")
public UserOrderInfo implements Serializable {
private long orderId;
private String locationName;
private UserInfo userInfo;
//getters and setters and constructors
}
@Entity
@Table(name = "user_queue_order_info")
public class UserQueueOrderInfo implements Serializable {
private long queueId;
private int orderValue;
private UserInfo userInfo;
private UserOrderInfo userOrderinfo;
//getters and setters , constructors
问题是当我尝试使用 UserOrderInfoDao 通过以下方法访问数据库时,异常来了。
public UserOrderInfo UserOrderInfoByMobileNumber(String mobileNumber ) {
List<UserOrderInfo> userOrderInfoList = sessionFactory.getCurrentSession().createQuery("from UserOrderInfo where userInfo.mobileNumber='"+mobileNumber+"'").list();
if(!userOrderInfoList.isEmpty()){
return userOrderInfoList.get(0);
}
return null;
}
当我尝试通过跟踪异常进行调试时,出现的异常是:
异常无法解析路径 [userInfo.mobileNumber],意外令牌 [userInfo] [来自 com.appls.entity.UserOrderInfo where userInfo.mobileNumber='7770909090']
为什么会出现这个问题?我正在等待您的宝贵建议。
我已经通过以下方式在 getter 和 setter 中完成了映射:
@Id
@Column(name = "mobile_number")
public String getMobileNumber() {
return mobileNumber;
}
其他领域也一样。
User_info 的实体是
private String mobileNumber;
private char gender;
private String language;
@Id
@Column(name = "mobile_number")
public String getMobileNumber() {
return mobileNumber;
}
public void setMobileNumber(String mobileNumber) {
this.mobileNumber = mobileNumber;
}
@Column(name = "gender")
public char getGender() {
return gender;
}
public void setGender(char gender) {
this.gender = gender;
}
@Column(name = "language")
public String getLanguage() {
return language;
}
public void setLanguage(String language) {
this.language =language;
}
public UserInfo() {
super();
}
public UserInfo(String mobileNumber){
super();
this.mobileNumber = mobileNumber;
}
public UserInfo(String mobileNumber, char gender, String language) {
super();
this.mobileNumber =mobileNumber;
this.gender = gender;
this.language = language;
}
@Override
public String toString() {
return "{\"mobileNumber\": \"" + this.mobileNumber
+ "\", \"gender\": \"" + this.gender
+ "\", \"language\": \"" + this.language }";
}