Question

我正在尝试用spring boot编写我的第一个spring批处理示例。我想在应用程序启动后立即在mysql中创建数据库。

我在pom中具有以下依赖性

        <?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>io.spring</groupId>
    <artifactId>hello-world</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>helloWorld</name>
    <description>Hello World for Spring Batch</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.3.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-batch</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jdbc</artifactId>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <addResources>true</addResources>
                </configuration>
            </plugin>
        </plugins>
    </build>


</project>

和application.properties具有以下配置

spring.datasource.url=jdbc:mysql://localhost:3306/batchjob?allowPublicKeyRetrieval=true&useSSL=false
spring.datasource.username=root
spring.datasource.password= abcd1234
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.schema=schema-mysql.sql

spring.batch.initialize-schema=always

但是当我启动应用程序时，它无法识别Mysql，并且在日志中它正在打印

2019-03-10 14:32:01.381  INFO 48560 --- [           main] o.s.b.c.r.s.JobRepositoryFactoryBean     : No database type set, using meta data indicating: HSQL

我缺少什么将在mySql中启用自动模式创建？

Answer 1

您应该添加此内容：

spring.jpa.database-platform = org.hibernate.dialect.MySQLDialect

Answer 2

DDL脚本位于org.springframework.batch.core包中，因此您的spring.datasource.schema应该是：

spring.datasource.schema=org/springframework/batch/core/schema-mysql.sql

您甚至可以忽略此属性，因为它将从您的数据源中自动检测到。

通过启动自动创建Spring批处理架构

2 个答案: