DAO 在数据库中创建记录时崩溃 - Spring 启动

Question

每当我将我的表单数据发送到我的休息控制器，并且它进入我的 DAO class，我得到这个错误：

org.h2.jdbc.JdbcSQLIntegrityConstraintViolationException: Referential integrity constraint violation

2019-06-29 20:27:20.730 ERROR 5000 --- [nio-8080-exec-3] o.a.c.c.C.[.[.[/].[dispatcherServlet]    : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is org.springframework.dao.DataIntegrityViolationException: StatementCallback;SQL [INSERT INTO Foo(name, typeOfPlan, email, website, phoneNum, username, password) VALUES('Test', '2 Year', 'example@gmail.com', 'test.org', '123456789', 'Master', '1234');]; Referential integrity constraint violation: "CONSTRAINT_B3: PUBLIC.FOO FOREIGN KEY(ID) REFERENCES PUBLIC.Foo(ID) (33)"; SQL statement:
INSERT INTO Foo(name, typeOfPlan, email, website, phoneNum, username, password) VALUES('Test', '2 Year', 'example@gmail.com', 'test.org', '123456789', 'Master', '1234'); [23506-199]; nested exception is org.h2.jdbc.JdbcSQLIntegrityConstraintViolationException: Referential integrity constraint violation: "CONSTRAINT_B3: PUBLIC.Foo FOREIGN KEY(ID) REFERENCES PUBLIC.Foo(ID) (33)"; SQL statement:
INSERT INTO Foo(name, typeOfPlan, email, website, phoneNum, username, password) VALUES('Test', '2 Year', 'example@gmail.com', 'test.org', '123456789', 'Master', '1234'); [23506-199]
    at org.h2.message.DbException.getJdbcSQLException(DbException.java:457)
    at org.h2.message.DbException.getJdbcSQLException(DbException.java:427)
    at org.h2.message.DbException.get(DbException.java:205)
    at org.h2.message.DbException.get(DbException.java:181)
    at org.h2.constraint.ConstraintReferential.checkRowOwnTable(ConstraintReferential.java:319)
    at org.h2.constraint.ConstraintReferential.checkRow(ConstraintReferential.java:261)
    at org.h2.table.Table.fireConstraints(Table.java:1020)
    at org.h2.table.Table.fireAfterRow(Table.java:1038)
    at org.h2.command.dml.Insert.insertRows(Insert.java:194)
    at org.h2.command.dml.Insert.update(Insert.java:132)
    at org.h2.command.CommandContainer.updatmmandContainer.java:133)
    at org.h2.command.Command.executeUpdate(Command.java:267)
    at org.h2.server.TcpServerThread.process(TcpServerThread.java:398)
    at org.h2.server.TcpServerThread.run(TcpServerThread.java:175)
    at java.lang.Thread.run(Thread.java:748)
] with root cause

org.h2.jdbc.JdbcSQLIntegrityConstraintViolationException: Referential integrity constraint violation: "CONSTRAINT_B3: PUBLIC.Foo FOREIGN KEY(ID) REFERENCES PUBLIC.Foo(ID) (33)"; SQL statement:
INSERT INTO Foo(name, typeOfPlan, email, website, phoneNum, username, password) VALUES('Test', '2 Year', 'example@gmail.com', 'test.org', '123456789', 'Master', '1234'); [23506-199]
    at org.h2.message.DbException.getJdbcSQLException(DbException.java:457) ~[h2-1.4.199.jar:1.4.199]
    at org.h2.engine.SessionRemote.done(SessionRemote.java:607) ~[h2-1.4.199.jar:1.4.199]
    at org.h2.command.CommandRemote.executeUpdate(CommandRemote.java:237) ~
....

其余部分没有用，出于隐私原因，未显示。我 向你保证 这就是你需要的所有数据，它包含所有嵌套的 exceptions/errors.

DAO

@Repository
public class SomeDAOImpl implements ISomeDAO {

    @Autowired
    private JdbcTemplate temp;

public void createRecord(Foo foo) {

        // SQL insert statement
        String sql = "INSERT INTO Foo(name, typeOfPlan, email, website, phoneNum, username, password) " +
                "VALUES(" + "\'" + foo.getName() + "\'" + ", " + "\'" + foo.getTypeOfPlan() + "\'" + ", " + "\'" + foo.getEmail() + "\'" + ", " +
                "\'" + foo.getWebsite() + "\'" + ", " + "\'" + foo.getPhoneNum() + "\'" + ", " + "\'" + foo.getUsername() + "\'" +
                ", " + "\'" + foo.getPassword() + "\'" + ");";

        // Updates the table with the new record
        // Error here
        temp.update(sql);
    }
}

POJO

@JsonIgnoreProperties(ignoreUnknown = true)
public class Foo {

    private String name;
    private String typeOfPlan;
    private String email;
    private String website;
    private String phoneNum;
    private String username;
    private String password;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getTypeOfPlan() {
        return typeOfPlan;
    }

    public void setTypeOfPlan(String typeOfPlan) {
        this.typeOfPlan= typeOfPlan;
    }

    public String getEmail() {
        return email;
    }

    public void setEmail(String email) {
        this.email = email;
    }

    public String getWebsite() {
        return website;
    }

    public void setWebsite(String website) {
        this.website = website;
    }

    public String getPhoneNum() {
        return phoneNum;
    }

    public void setPhoneNum(String phoneNum) {
        this.phoneNum = phoneNum;
    }

    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;
    }
}

你如何解决这个问题并防止它发生？

编辑：

我的表的 DDL：

create table Foo3 (
    ID INT AUTO_INCREMENT,
    foo1 VARCHAR(30) NOT NULL,
    foo2 VARCHAR(10) NOT NULL,
    foo3 VARCHAR(50) NOT NULL,
    PRIMARY KEY(ID)
);

create table Foo2 (
    ID INT AUTO_INCREMENT,
    name VARCHAR(64) NOT NULL,
    PRIMARY KEY(ID),
    FOREIGN KEY (ID) REFERENCES Foo3(ID)
);

create table Foo (
    ID INT AUTO_INCREMENT,
    name VARCHAR(64) NOT NULL,
    typeOfPlan VARCHAR(30) NOT NULL,
    email VARCHAR(35) NOT NULL,
    website VARCHAR(40),
    phoneNum VARCHAR(35) NOT NULL,
    username VARCHAR(35) NOT NULL,
    password VARCHAR(35) NOT NULL,
    PRIMARY KEY(ID),
    FOREIGN KEY (ID) REFERENCES Foo2(ID)
);

Answer 1

您正在尝试向 table FOO 中插入一条新记录，例如INSERT INTO Foo，但根据您的 tables 定义，您引用了 table Foo2 中的现有记录（并且 table Foo2 引用了 table Foo3)... 因此，您必须首先按以下顺序在这些 table 中创建引用记录：

在 table Foo3
在 table Foo2 中创建一条引用 Foo3 记录的记录
在 table Foo 中创建一条引用 Foo2 记录的记录

重要说明：请检查您的 table 关系设计。看来您在名为 "ID" 的同一 table 列中混合了 PRIMARY KEY 和 FOREIGN KEY。理想情况下，每个 table 应该在单独的列中有自己的主键列和外键。

Answer 2

解决方法是更新我的 DDL，我发现我 FOREIGN KEY 做错了。

这是更新后的版本：

create table Foo3 (
    ID INT AUTO_INCREMENT PRIMARY KEY,
    foo1 VARCHAR(30) NOT NULL,
    foo2 VARCHAR(10) NOT NULL,
    foo3 VARCHAR(50) NOT NULL
);

create table Foo2 (
    ID INT AUTO_INCREMENT PRIMARY KEY,
    name VARCHAR(64) NOT NULL,
    Foo3_ID INT NULL,
    CONSTRAINT FK_FOO2_FOO3_ID FOREIGN KEY(FOO3_ID) REFERENCES FOO3(ID)
);

create table Foo (
    ID INT AUTO_INCREMENT PRIMARY KEY,
    name VARCHAR(64) NOT NULL,
    typeOfPlan VARCHAR(30) NOT NULL,
    email VARCHAR(35) NOT NULL,
    website VARCHAR(40),
    phoneNum VARCHAR(35) NOT NULL,
    username VARCHAR(35) NOT NULL,
    password VARCHAR(35) NOT NULL,
    Foo2_ID INT NULL,
    CONSTRAINT FK_FOO_FOO2_ID FOREIGN KEY(FOO2_ID) REFERENCES Foo2(ID)
);

我需要添加 NULL 属性以允许空 FK 引用，并且我必须添加 CONSTRAINT 以使 FOREIGN KEY 可用。

DAO 在数据库中创建记录时崩溃 - Spring 启动

Crash with DAO creating a record in DB - Spring Boot

java

dao

h2

spring-jdbc

spring-boot