Java H2数据库无法在列中设置默认值，即使通过Spring Boot在架构中指定

我正在尝试使用

H2

DB和

springboot

创建一个非常简单的基于

REST

的

API

除了从

import.sql

文件插入数据这一部分外，其他一切似乎都正常工作

即使架构将默认值指定为

Y

和

notnull

（参见下图），表中的

ACTIVE

列也不会填充数据

src/main/resources/schema.sql

DROP TABLE IF EXISTS COUNTRY;
CREATE TABLE IF NOT EXISTS COUNTRY(
    COUNTRY_ID SERIAL PRIMARY KEY, 
    COUNTRY_NAME VARCHAR(100) NOT NULL, 
    ISO_ALPHA2_CODE VARCHAR(2) NOT NULL, 
    ISO_ALPHA3_CODE VARCHAR(3) NOT NULL, 
    ISO_NUMERICAL_CODE INTEGER NOT NULL, 
    ACTIVE CHAR(1) DEFAULT 'Y' NOT NULL
);

INSERT INTO COUNTRY (COUNTRY_NAME,ISO_ALPHA2_CODE,ISO_ALPHA3_CODE,ISO_NUMERICAL_CODE) VALUES ('Afghanistan','AF','AFG','4');
INSERT INTO COUNTRY (COUNTRY_NAME,ISO_ALPHA2_CODE,ISO_ALPHA3_CODE,ISO_NUMERICAL_CODE) VALUES ('Aland Islands','AX','ALA','248');
INSERT INTO COUNTRY (COUNTRY_NAME,ISO_ALPHA2_CODE,ISO_ALPHA3_CODE,ISO_NUMERICAL_CODE) VALUES ('Albania','AL','ALB','8');
INSERT INTO COUNTRY (COUNTRY_NAME,ISO_ALPHA2_CODE,ISO_ALPHA3_CODE,ISO_NUMERICAL_CODE) VALUES ('Algeria','DZ','DZA','12');
INSERT INTO COUNTRY (COUNTRY_NAME,ISO_ALPHA2_CODE,ISO_ALPHA3_CODE,ISO_NUMERICAL_CODE) VALUES ('American Samoa','AS','ASM','16');
INSERT INTO COUNTRY (COUNTRY_NAME,ISO_ALPHA2_CODE,ISO_ALPHA3_CODE,ISO_NUMERICAL_CODE) VALUES ('Andorra','AD','AND','20');
INSERT INTO COUNTRY (COUNTRY_NAME,ISO_ALPHA2_CODE,ISO_ALPHA3_CODE,ISO_NUMERICAL_CODE) VALUES ('Angola','AO','AGO','24');
INSERT INTO COUNTRY (COUNTRY_NAME,ISO_ALPHA2_CODE,ISO_ALPHA3_CODE,ISO_NUMERICAL_CODE) VALUES ('Anguilla','AI','AIA','660');
INSERT INTO COUNTRY (COUNTRY_NAME,ISO_ALPHA2_CODE,ISO_ALPHA3_CODE,ISO_NUMERICAL_CODE) VALUES ('Antarctica','AQ','ATA','10');
INSERT INTO COUNTRY (COUNTRY_NAME,ISO_ALPHA2_CODE,ISO_ALPHA3_CODE,ISO_NUMERICAL_CODE) VALUES ('Antigua and Barbuda','AG','ATG','28');
INSERT INTO COUNTRY (COUNTRY_NAME,ISO_ALPHA2_CODE,ISO_ALPHA3_CODE,ISO_NUMERICAL_CODE) VALUES ('Argentina','AR','ARG','32');
INSERT INTO COUNTRY (COUNTRY_NAME,ISO_ALPHA2_CODE,ISO_ALPHA3_CODE,ISO_NUMERICAL_CODE) VALUES ('Armenia','AM','ARM','51');

spring:
    application:
        name: country-service

#Datasource settings
    datasource:
        url: jdbc:h2:file:~/test
        username: sa
        password: 
        driver-class-name: org.h2.Driver        

<dependency>
    <groupId>com.h2database</groupId>
    <artifactId>h2</artifactId>
    <scope>runtime</scope>
</dependency>

src/main/resources/import.sql

DROP TABLE IF EXISTS COUNTRY;
CREATE TABLE IF NOT EXISTS COUNTRY(
    COUNTRY_ID SERIAL PRIMARY KEY, 
    COUNTRY_NAME VARCHAR(100) NOT NULL, 
    ISO_ALPHA2_CODE VARCHAR(2) NOT NULL, 
    ISO_ALPHA3_CODE VARCHAR(3) NOT NULL, 
    ISO_NUMERICAL_CODE INTEGER NOT NULL, 
    ACTIVE CHAR(1) DEFAULT 'Y' NOT NULL
);

INSERT INTO COUNTRY (COUNTRY_NAME,ISO_ALPHA2_CODE,ISO_ALPHA3_CODE,ISO_NUMERICAL_CODE) VALUES ('Afghanistan','AF','AFG','4');
INSERT INTO COUNTRY (COUNTRY_NAME,ISO_ALPHA2_CODE,ISO_ALPHA3_CODE,ISO_NUMERICAL_CODE) VALUES ('Aland Islands','AX','ALA','248');
INSERT INTO COUNTRY (COUNTRY_NAME,ISO_ALPHA2_CODE,ISO_ALPHA3_CODE,ISO_NUMERICAL_CODE) VALUES ('Albania','AL','ALB','8');
INSERT INTO COUNTRY (COUNTRY_NAME,ISO_ALPHA2_CODE,ISO_ALPHA3_CODE,ISO_NUMERICAL_CODE) VALUES ('Algeria','DZ','DZA','12');
INSERT INTO COUNTRY (COUNTRY_NAME,ISO_ALPHA2_CODE,ISO_ALPHA3_CODE,ISO_NUMERICAL_CODE) VALUES ('American Samoa','AS','ASM','16');
INSERT INTO COUNTRY (COUNTRY_NAME,ISO_ALPHA2_CODE,ISO_ALPHA3_CODE,ISO_NUMERICAL_CODE) VALUES ('Andorra','AD','AND','20');
INSERT INTO COUNTRY (COUNTRY_NAME,ISO_ALPHA2_CODE,ISO_ALPHA3_CODE,ISO_NUMERICAL_CODE) VALUES ('Angola','AO','AGO','24');
INSERT INTO COUNTRY (COUNTRY_NAME,ISO_ALPHA2_CODE,ISO_ALPHA3_CODE,ISO_NUMERICAL_CODE) VALUES ('Anguilla','AI','AIA','660');
INSERT INTO COUNTRY (COUNTRY_NAME,ISO_ALPHA2_CODE,ISO_ALPHA3_CODE,ISO_NUMERICAL_CODE) VALUES ('Antarctica','AQ','ATA','10');
INSERT INTO COUNTRY (COUNTRY_NAME,ISO_ALPHA2_CODE,ISO_ALPHA3_CODE,ISO_NUMERICAL_CODE) VALUES ('Antigua and Barbuda','AG','ATG','28');
INSERT INTO COUNTRY (COUNTRY_NAME,ISO_ALPHA2_CODE,ISO_ALPHA3_CODE,ISO_NUMERICAL_CODE) VALUES ('Argentina','AR','ARG','32');
INSERT INTO COUNTRY (COUNTRY_NAME,ISO_ALPHA2_CODE,ISO_ALPHA3_CODE,ISO_NUMERICAL_CODE) VALUES ('Armenia','AM','ARM','51');

spring:
    application:
        name: country-service

#Datasource settings
    datasource:
        url: jdbc:h2:file:~/test
        username: sa
        password: 
        driver-class-name: org.h2.Driver        

<dependency>
    <groupId>com.h2database</groupId>
    <artifactId>h2</artifactId>
    <scope>runtime</scope>
</dependency>

application.yml

DROP TABLE IF EXISTS COUNTRY;
CREATE TABLE IF NOT EXISTS COUNTRY(
    COUNTRY_ID SERIAL PRIMARY KEY, 
    COUNTRY_NAME VARCHAR(100) NOT NULL, 
    ISO_ALPHA2_CODE VARCHAR(2) NOT NULL, 
    ISO_ALPHA3_CODE VARCHAR(3) NOT NULL, 
    ISO_NUMERICAL_CODE INTEGER NOT NULL, 
    ACTIVE CHAR(1) DEFAULT 'Y' NOT NULL
);

INSERT INTO COUNTRY (COUNTRY_NAME,ISO_ALPHA2_CODE,ISO_ALPHA3_CODE,ISO_NUMERICAL_CODE) VALUES ('Afghanistan','AF','AFG','4');
INSERT INTO COUNTRY (COUNTRY_NAME,ISO_ALPHA2_CODE,ISO_ALPHA3_CODE,ISO_NUMERICAL_CODE) VALUES ('Aland Islands','AX','ALA','248');
INSERT INTO COUNTRY (COUNTRY_NAME,ISO_ALPHA2_CODE,ISO_ALPHA3_CODE,ISO_NUMERICAL_CODE) VALUES ('Albania','AL','ALB','8');
INSERT INTO COUNTRY (COUNTRY_NAME,ISO_ALPHA2_CODE,ISO_ALPHA3_CODE,ISO_NUMERICAL_CODE) VALUES ('Algeria','DZ','DZA','12');
INSERT INTO COUNTRY (COUNTRY_NAME,ISO_ALPHA2_CODE,ISO_ALPHA3_CODE,ISO_NUMERICAL_CODE) VALUES ('American Samoa','AS','ASM','16');
INSERT INTO COUNTRY (COUNTRY_NAME,ISO_ALPHA2_CODE,ISO_ALPHA3_CODE,ISO_NUMERICAL_CODE) VALUES ('Andorra','AD','AND','20');
INSERT INTO COUNTRY (COUNTRY_NAME,ISO_ALPHA2_CODE,ISO_ALPHA3_CODE,ISO_NUMERICAL_CODE) VALUES ('Angola','AO','AGO','24');
INSERT INTO COUNTRY (COUNTRY_NAME,ISO_ALPHA2_CODE,ISO_ALPHA3_CODE,ISO_NUMERICAL_CODE) VALUES ('Anguilla','AI','AIA','660');
INSERT INTO COUNTRY (COUNTRY_NAME,ISO_ALPHA2_CODE,ISO_ALPHA3_CODE,ISO_NUMERICAL_CODE) VALUES ('Antarctica','AQ','ATA','10');
INSERT INTO COUNTRY (COUNTRY_NAME,ISO_ALPHA2_CODE,ISO_ALPHA3_CODE,ISO_NUMERICAL_CODE) VALUES ('Antigua and Barbuda','AG','ATG','28');
INSERT INTO COUNTRY (COUNTRY_NAME,ISO_ALPHA2_CODE,ISO_ALPHA3_CODE,ISO_NUMERICAL_CODE) VALUES ('Argentina','AR','ARG','32');
INSERT INTO COUNTRY (COUNTRY_NAME,ISO_ALPHA2_CODE,ISO_ALPHA3_CODE,ISO_NUMERICAL_CODE) VALUES ('Armenia','AM','ARM','51');

spring:
    application:
        name: country-service

#Datasource settings
    datasource:
        url: jdbc:h2:file:~/test
        username: sa
        password: 
        driver-class-name: org.h2.Driver        

<dependency>
    <groupId>com.h2database</groupId>
    <artifactId>h2</artifactId>
    <scope>runtime</scope>
</dependency>

pom.xml

DROP TABLE IF EXISTS COUNTRY;
CREATE TABLE IF NOT EXISTS COUNTRY(
    COUNTRY_ID SERIAL PRIMARY KEY, 
    COUNTRY_NAME VARCHAR(100) NOT NULL, 
    ISO_ALPHA2_CODE VARCHAR(2) NOT NULL, 
    ISO_ALPHA3_CODE VARCHAR(3) NOT NULL, 
    ISO_NUMERICAL_CODE INTEGER NOT NULL, 
    ACTIVE CHAR(1) DEFAULT 'Y' NOT NULL
);

INSERT INTO COUNTRY (COUNTRY_NAME,ISO_ALPHA2_CODE,ISO_ALPHA3_CODE,ISO_NUMERICAL_CODE) VALUES ('Afghanistan','AF','AFG','4');
INSERT INTO COUNTRY (COUNTRY_NAME,ISO_ALPHA2_CODE,ISO_ALPHA3_CODE,ISO_NUMERICAL_CODE) VALUES ('Aland Islands','AX','ALA','248');
INSERT INTO COUNTRY (COUNTRY_NAME,ISO_ALPHA2_CODE,ISO_ALPHA3_CODE,ISO_NUMERICAL_CODE) VALUES ('Albania','AL','ALB','8');
INSERT INTO COUNTRY (COUNTRY_NAME,ISO_ALPHA2_CODE,ISO_ALPHA3_CODE,ISO_NUMERICAL_CODE) VALUES ('Algeria','DZ','DZA','12');
INSERT INTO COUNTRY (COUNTRY_NAME,ISO_ALPHA2_CODE,ISO_ALPHA3_CODE,ISO_NUMERICAL_CODE) VALUES ('American Samoa','AS','ASM','16');
INSERT INTO COUNTRY (COUNTRY_NAME,ISO_ALPHA2_CODE,ISO_ALPHA3_CODE,ISO_NUMERICAL_CODE) VALUES ('Andorra','AD','AND','20');
INSERT INTO COUNTRY (COUNTRY_NAME,ISO_ALPHA2_CODE,ISO_ALPHA3_CODE,ISO_NUMERICAL_CODE) VALUES ('Angola','AO','AGO','24');
INSERT INTO COUNTRY (COUNTRY_NAME,ISO_ALPHA2_CODE,ISO_ALPHA3_CODE,ISO_NUMERICAL_CODE) VALUES ('Anguilla','AI','AIA','660');
INSERT INTO COUNTRY (COUNTRY_NAME,ISO_ALPHA2_CODE,ISO_ALPHA3_CODE,ISO_NUMERICAL_CODE) VALUES ('Antarctica','AQ','ATA','10');
INSERT INTO COUNTRY (COUNTRY_NAME,ISO_ALPHA2_CODE,ISO_ALPHA3_CODE,ISO_NUMERICAL_CODE) VALUES ('Antigua and Barbuda','AG','ATG','28');
INSERT INTO COUNTRY (COUNTRY_NAME,ISO_ALPHA2_CODE,ISO_ALPHA3_CODE,ISO_NUMERICAL_CODE) VALUES ('Argentina','AR','ARG','32');
INSERT INTO COUNTRY (COUNTRY_NAME,ISO_ALPHA2_CODE,ISO_ALPHA3_CODE,ISO_NUMERICAL_CODE) VALUES ('Armenia','AM','ARM','51');

spring:
    application:
        name: country-service

#Datasource settings
    datasource:
        url: jdbc:h2:file:~/test
        username: sa
        password: 
        driver-class-name: org.h2.Driver        

<dependency>
    <groupId>com.h2database</groupId>
    <artifactId>h2</artifactId>
    <scope>runtime</scope>
</dependency>

com.h2数据库
氢
运行时

我相信Spring boot正在执行ddl auto=createDrop，数据是否会在应用程序结束后保留？改为在application.yml中指定

validate

。我在查找答案时看到的一件事是，默认值是在nullability之后指定的。不过，评论中的人对模式的看法绝对正确，如果它真的是

notnull

h2，则在尝试将列值设置为NULL时会抛出错误。
好吧，那肯定是

您可以显式设置spring.jpa.hibernate.ddl-auto，标准hibernate属性值为none、validate、update、create、create drop。Spring Boot根据是否认为数据库已嵌入（默认创建删除）为您选择默认值（默认无）。

---

默认值为createdrop，它创建运行应用程序的模式，然后将其删除。如果您计划自己创建模式，请选择“无”或“验证”

您使用了不同的模式，它仍然能够创建表和插入数据，除了我所说的一列数据。如果您有任何指针，我将非常乐意修复模式。您发布的模式和正在使用的模式不一样。找出您在哪个其他地方创建了

国家

表。我在h2中发现了相同的问题。这似乎不尊重违约，我对此还不清楚。首先，数据不会在应用程序结束后保留。第二件事，我切换了NOTNULL和默认的“Y”值，并再次测试了它，但没有成功是的，它是ddl自动设置，然后。。。请参见2 minNope中的编辑，此解决方案不起作用。我尝试了spring.jpa.hibernate.ddl auto=none和spring.jpa.hibernate.ddl auto=validate并重新运行应用程序。但是没有成功。@user2325154如果Hibernate从头开始创建架构（即如果

ddl auto

属性设置为

create

或

create drop

），则在启动时将执行类路径根目录中名为

import.sql

的文件。不适用于

validate

和

none

这是否意味着我的import.sql将在服务器启动时执行，从而完全忽略我的schema.sql文件？