JPA - 重复记录

我有两个表Customer，Address

在Customer.java

@Entity 
    @Table(name = "customer", uniqueConstraints = { @UniqueConstraint(columnNames = { "customer_id" }) }) 
    @JsonIgnoreProperties({ "hibernateLazyInitializer", "handler" }) 
    @NamedQuery(name = "Customer.findAll", query = "SELECT c FROM Customer c") 
    public class Customer implements Serializable { 

    @Id 
    @GeneratedValue(strategy = GenerationType.AUTO) 
    @Column(name = "customer_id") 
    private long customerId; 

    @OneToMany(mappedBy = "customer", fetch = FetchType.EAGER, cascade = CascadeType.ALL) 
    @Column(nullable = true) 
    @JsonManagedReference 
    private List<Address> addresses;

在Address.java

@Entity 
    @Table(name = "address", uniqueConstraints = { @UniqueConstraint(columnNames = { "account_id" }) }) 
    @JsonIgnoreProperties({ "hibernateLazyInitializer", "handler" }) 
    public class Address implements Serializable { 
    private static final long serialVersionUID = 1L; 

    @Id 
    @GeneratedValue(strategy = GenerationType.AUTO) 
    @Column(name = "account_id") 
    private long accountId; 

    @ManyToOne(fetch = FetchType.EAGER, cascade = CascadeType.ALL) 
    @JoinColumn(name = "customer_id") 
    @JsonBackReference 
    private Customer customer;

和表格： Customer表：

CREATE TABLE `customer` (
    `customer_id` smallint(5) unsigned NOT NULL AUTO_INCREMENT, 
    `user_name` varchar(45) NOT NULL, 
    `password` varchar(45) NOT NULL, 
    `encrypt_key` varchar(200) NOT NULL, 
    `theme_id` smallint(5) unsigned NOT NULL, 
    `first_name` varchar(45) NOT NULL, 
    `last_name` varchar(45) NOT NULL, 
    `email` varchar(50) DEFAULT NULL, 
    `active` tinyint(1) NOT NULL DEFAULT '1', 
    `last_update` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP, 
    `self_description` varchar(2000) NOT NULL, 
    PRIMARY KEY (`customer_id`), 
    KEY `idx_last_name` (`last_name`) 
) ENGINE=InnoDB AUTO_INCREMENT=101 DEFAULT CHARSET=utf8;

个

地址表：

CREATE TABLE `address` (
    `account_id` smallint(5) unsigned NOT NULL AUTO_INCREMENT, 
    `customer_id` smallint(5) unsigned NOT NULL, 
    `address_type` varchar(15) NOT NULL, -- Office, Branch-1, Branch-2, 
    `door_num` varchar(50) NOT NULL, 
    `landmark` varchar(150) DEFAULT NULL, 
    `street` varchar(50) DEFAULT NULL, 
    `area_name` varchar(25) NOT NULL, 
    `district` varchar(25) NOT NULL, 
    `city` varchar(25) NOT NULL, 
    `postal_code` varchar(10) DEFAULT NULL, 
    `phone1` varchar(20) NOT NULL, 
    `phone2` varchar(20), 
    `last_update` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP, 
    PRIMARY KEY (`account_id`), 
    KEY `idx_fk_city` (`city`), 
    CONSTRAINT `fk_customer_id` FOREIGN KEY (`customer_id`) REFERENCES `customer` (`customer_id`) ON UPDATE CASCADE 
) ENGINE=InnoDB AUTO_INCREMENT=201 DEFAULT CHARSET=utf8;

了重复的记录：

{ 
    "customerId": 101, 
    "active": 1, 
    "email": "[email protected]", 
    "encryptKey": "wwwwwfsad", 
    "firstName": "aaa", 
    "lastName": "bbb", 
    "password": "user1", 
    "selfDescription": "user1", 
    "userName": "user1", 
    "addresses": [ 
    { 
     "accountId": 201, 
     "addressType": "main office", 
     "areaName": "area1", 
     "city": "city1", 
     "district": "district1", 
     "doorNum": "89", 
     "landmark": "landmark1", 
     "phone1": "646432365465", 
     "phone2": "4534542355675", 
     "postalCode": "453245", 
     "street": "street1" 
    }, 
    { 
     "accountId": 201, 
     "addressType": "main office", 
     "areaName": "area1", 
     "city": "city1", 
     "district": "district1", 
     "doorNum": "89", 
     "landmark": "landmark1", 
     "phone1": "646432365465", 
     "phone2": "4534542355675", 
     "postalCode": "453245", 
     "street": "street1" 
    }, 
    { 
     "accountId": 202, 
     "addressType": "main office", 
     "areaName": "area2", 
     "city": "city2", 
     "district": "district2", 
     "doorNum": "89", 
     "landmark": "landmark2", 
     "phone1": "453454675", 
     "phone2": "53425324", 
     "postalCode": "7457646432", 
     "street": "street2" 
    }, 
    { 
     "accountId": 202, 
     "addressType": "main office", 
     "areaName": "area2", 
     "city": "city2", 
     "district": "district2", 
     "doorNum": "89", 
     "landmark": "landmark2", 
     "phone1": "453454675", 
     "phone2": "53425324", 
     "postalCode": "7457646432", 
     "street": "street2" 
    } 
    ], 
    "customerOptions": [ 
    { 
     "id": { 
     "questionId": 501, 
     "customerId": 101, 
     "optionId": 601 
     } 
    }, 
    { 
     "id": { 
     "questionId": 502, 
     "customerId": 101, 
     "optionId": 603 
     } 
    }, 
    { 
     "id": { 
     "questionId": 501, 
     "customerId": 101, 
     "optionId": 601 
     } 
    }, 
    { 
     "id": { 
     "questionId": 502, 
     "customerId": 101, 
     "optionId": 603 
     } 
    } 
    ] 
}

来源

2015-12-15 Sun

你是如何保存实体的？你可以添加代码吗？ –

我在mysql工作台中插入了示例数据。 – Sun

你能描述一下你想要的行为吗？您表示您正在获取重复记录，但您为什么期望只有不同的记录？你如何插入和读取数据库中的数据？ – OndrejM

答案很简单，但我经过长期的斗争中。即：

我将所有列表字段转换为所有实体类中的设置字段。

来源

2015-12-29 12:21:47 Sun

JPA - 重复记录

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