在Java代码中运行liquibase

spr*_*boy 30 java liquibase

由于某种原因,没有关于在Java代码中运行liquibase的文档.我想为单元测试生成表.

我将如何直接在Java中运行它?

例如

Liquibase liquibase = new Liquibase()
liquibase.runUpdates() ?
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Nat*_*and 37

它应该是类似的(取自liquibase.integration.spring.SpringLiquibase源码):

java.sql.Connection c = YOUR_CONNECTION;
Liquibase liquibase = null;
try {
    Database database = DatabaseFactory.getInstance().findCorrectDatabaseImplementation(new JdbcConnection(c))
    liquibase = new Liquibase(YOUR_CHANGELOG, new FileSystemResourceAccessor(), database);
    liquibase.update();
} catch (SQLException e) {
    throw new DatabaseException(e);
} finally {
    if (c != null) {
        try {
            c.rollback();
            c.close();
        } catch (SQLException e) {
            //nothing to do
        }
    }
}
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ResourceAccessor有多种实现方式,具体取决于应该如何找到更改日志文件.

  • 添加到Nathan Answer请参考此处的真实代码https://github.com/liquibase/liquibase/blob/master/liquibase-core/src/main/java/liquibase/integration/servlet/LiquibaseServletListener.java#L209 (4认同)

tho*_*iha 5

我找到了一种方法,以实现建立使用数据库或者行家或Java。在上述的例子中FileSystemResourceAccessor(),不幸的是使得它如此,如果你部署这就需要建立从罐子本身数据库的应用程序,那么你最终不得不提取罐作为一个zip作为一种解决方法,因为只有存在这些liquibase文件在罐子里。这意味着您的 jar 最终是不可移植的,并且您必须拥有maven要设置数据库的任何位置。

使用这个结构:

src/main/resources/liquibase/db.changelog-master.xml src/main/resources/liquibase/changelogs/...

您的数据库变更日志主文件可能如下所示:

<?xml version="1.0" encoding="UTF-8"?>
<databaseChangeLog
        xmlns="http://www.liquibase.org/xml/ns/dbchangelog"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xmlns:ext="http://www.liquibase.org/xml/ns/dbchangelog-ext"
        xsi:schemaLocation="http://www.liquibase.org/xml/ns/dbchangelog http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-3.1.xsd
    http://www.liquibase.org/xml/ns/dbchangelog-ext http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-ext.xsd">

    <!-- <includeAll path="src/main/resources/liquibase/changelogs"/> -->
    <include file="changelogs/my-date.1.sql" relativeToChangelogFile="true"/>
</databaseChangeLog>
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您可以将此部分用于您的pom.xml,以确保mvn install还将设置您的 liquibase 数据库。

<plugin>
   <groupId>org.liquibase</groupId>
   <artifactId>liquibase-maven-plugin</artifactId>
   <version>3.5.1</version>
   <configuration>
      <changeLogFile>liquibase/db.changelog-master.xml</changeLogFile>
      <driver>org.postgresql.Driver</driver>
      <url>${jdbc.url}</url>
      <username>${jdbc.username}</username>
      <password>${jdbc.password}</password>
   </configuration>
   <executions>
      <execution>
         <phase>process-resources</phase>
         <goals>
            <goal>update</goal>
         </goals>
      </execution>
   </executions>
</plugin>
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使用ClassLoaderResourceAccessor()代替FileSystemResourceAccessor()

public static void runLiquibase() {

    Liquibase liquibase = null;
    Connection c = null;
    try {
        c = DriverManager.getConnection(DataSources.PROPERTIES.getProperty("jdbc.url"),
                DataSources.PROPERTIES.getProperty("jdbc.username"),
                DataSources.PROPERTIES.getProperty("jdbc.password"));

        Database database = DatabaseFactory.getInstance().findCorrectDatabaseImplementation(new JdbcConnection(c));
        log.info(DataSources.CHANGELOG_MASTER);
        liquibase = new Liquibase(DataSources.CHANGELOG_MASTER, new ClassLoaderResourceAccessor(), database);
        liquibase.update("main");
    } catch (SQLException | LiquibaseException e) {
        e.printStackTrace();
        throw new NoSuchElementException(e.getMessage());
    } finally {
        if (c != null) {
            try {
                c.rollback();
                c.close();
            } catch (SQLException e) {
                //nothing to do
            }
        }
    }
}
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