Java 重写spring批处理管理以使用mysql数据库

我试图在SpringBatch管理中使用mysql数据库而不是默认的HSQL。根据文件规定

及

我将

env context.xml

复制到

src/main/resources/META-INF/batch/override/manager/env context.xml

，并将其配置值从

<value>classpath:batch-${ENVIRONMENT:hsql}.properties</value>

classpath:batch-${ENVIRONMENT:hsql}.properties

到

classpath:batch-mysql.properties

下面是我的完整配置

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">

    <!--  Use this to set additional properties on beans at run time -->
    <bean id="placeholderProperties" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <property name="locations">
            <list>
                <value>classpath:/org/springframework/batch/admin/bootstrap/batch.properties</value>
                <value>classpath:batch-default.properties</value>
                <value>classpath:batch-mysql.properties</value>
            </list>
        </property>
        <property name="systemPropertiesModeName" value="SYSTEM_PROPERTIES_MODE_OVERRIDE" />
        <property name="ignoreResourceNotFound" value="true" />
        <property name="ignoreUnresolvablePlaceholders" value="false" />
        <property name="order" value="1" />
    </bean>

</beans>

classpath:/org/springframework/batch/admin/bootstrap/batch.properties
classpath:batch-default.properties
classpath:batch-mysql.properties

我还尝试将data-source-context.xml复制到同一个文件夹，并将其配置更改为mysql

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:jdbc="http://www.springframework.org/schema/jdbc"
    xsi:schemaLocation="http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.0.xsd
        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">

    <bean id="dataSource"
        class="org.apache.commons.dbcp.BasicDataSource">
        <property name="driverClassName" value="com.mysql.jdbc.Driver" />
        <property name="url" value="jdbc:mysql://localhost/batch" />
        <property name="username" value="root" />
        <property name="password" value="root" />
        <property name="testWhileIdle" value="true"/>
        <property name="validationQuery" value="SELECT 1"/>
    </bean>

    <bean id="transactionManager"
        class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource" />
    </bean>

    <!--  Initialise the database if enabled: -->
    <jdbc:initialize-database data-source="dataSource" enabled="false" ignore-failures="DROPS">
        <jdbc:script location="classpath*:/org/springframework/batch/core/schema-drop-mysql.sql"/>
        <jdbc:script location="classpath:/org/springframework/batch/core/schema-mysql.sql"/>
        <jdbc:script location="classpath:/business-schema-mysql.sql"/>
    </jdbc:initialize-database>

</beans>

---

但它仍然使用hsql数据库吗？如何覆盖默认配置以使用mysql数据库？

您不应该替换

类路径：batch-${ENVIRONMENT:hsql}.properties

。相反，将环境变量

environment

设置为mysql。这将导致所有适当的组件选择正确的数据库。您可以在此处阅读有关该功能的更多信息：

如果您想尝试只使用注释而不使用任何xml配置，请尝试以下操作

HibernateJpaVendorAdapter jpaVendorAdapter = new HibernateJpaVendorAdapter();
jpaVendorAdapter.setDatabase(Database.MYSQL); 

---

它正在工作。我的代码可以在这里找到-。

我可以通过以下步骤使用上述方法建立连接

首先，我将

env context.xml

复制到

src/main/resources/META-INF/batch/override/manager/env context.xml

：

<?xml version="1.0" encoding="UTF-8"?>`
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">`

    <!--  Use this to set additional properties on beans at run time -->
    <bean id="placeholderProperties" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <property name="locations">
            <list>
                <value>classpath:/org/springframework/batch/admin/bootstrap/batch.properties</value>
                <value>classpath:batch-default.properties</value>
                <value>classpath:batch-${ENVIRONMENT:sqlserver}.properties</value>
            </list>
        </property>
        <property name="systemPropertiesModeName" value="SYSTEM_PROPERTIES_MODE_OVERRIDE" />
        <property name="ignoreResourceNotFound" value="true" />
        <property name="ignoreUnresolvablePlaceholders" value="false" />
        <property name="order" value="1" />
    </bean>

</beans>

由于我的表已在数据库中创建，因此我跳过了以下条目： #script=/org/springframework/batch/core/schema-drop-sqlserver.sql #script=/org/springframework/batch/core/schema-sqlserver.sql #batch.business.schema.script=business-schema-sqlserver.sql

最后，使用批处理.initializer.enabled=false，我终于能够建立连接

我可以监控作业，也可以在我的管理应用程序中查看新作业。这些已启动的作业也会显示在数据库中

<?xml version="1.0" encoding="UTF-8"?>`
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">`

    <!--  Use this to set additional properties on beans at run time -->
    <bean id="placeholderProperties" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <property name="locations">
            <list>
                <value>classpath:/org/springframework/batch/admin/bootstrap/batch.properties</value>
                <value>classpath:batch-default.properties</value>
                <value>classpath:batch-${ENVIRONMENT:sqlserver}.properties</value>
            </list>
        </property>
        <property name="systemPropertiesModeName" value="SYSTEM_PROPERTIES_MODE_OVERRIDE" />
        <property name="ignoreResourceNotFound" value="true" />
        <property name="ignoreUnresolvablePlaceholders" value="false" />
        <property name="order" value="1" />
    </bean>

</beans>

# Default placeholders for database platform independent features 
batch.remote.base.url=http://localhost:8080/spring-batch-admin-sample
# Non-platform dependent settings that you might like to change

batch.jdbc.driver=com.microsoft.sqlserver.jdbc.SQLServerDriver
batch.jdbc.url=jdbc:sqlserver://localhost;databaseName=batchrepo
batch.jdbc.user=la
batch.jdbc.password=la
atch.jdbc.testWhileIdle=true
batch.data.source.init=false
batch.jdbc.validationQuery=

batch.database.incrementer.class=org.springframework.jdbc.support.incrementer.SqlServerMaxValueIncrementer
batch.lob.handler.class=org.springframework.jdbc.support.lob.DefaultLobHandler
batch.database.incrementer.parent=columnIncrementerParent
batch.grid.size=2
batch.jdbc.pool.size=6
batch.verify.cursor.position=true
batch.isolationlevel=ISOLATION_SERIALIZABLE
batch.initializer.enabled=false