java - 在 liquibase 中运行 Java 代码变更集时获取 liquibase.exception.CustomChangeException

Question

我正在 liquibase 中运行 Java 代码变更集。但我遇到了这个问题，我收到了 ClassNotFoundException。我做了一些搜索，但找不到任何有用的东西。尽管进行了一些研究 this link 很有用。我正在使用 liquibase-core-2.0.1。

以下是我的变更集

<changeSet id="111" author="myname" >
        <customChange class="com.example.CreateTableTask">
        </customChange>
</changeSet>

下面是我的java类

public class CreateTableTask implements CustomTaskChange
{
    private static Logger log = Logger.getLogger(CreateTableTask.class.getName());
    @Override
    public void execute(Database database) throws CustomChangeException
    {
        System.out.print("testsomestring");
        try
        {
            JdbcConnection databaseConnection = (JdbcConnection) database.getConnection();
            log.info("testsomestring");
        }
        catch (Exception e)
        {
            throw new CustomChangeException(e);
        }
    }

    @Override
    public String getConfirmationMessage()
    {
        return null;
    }

    @Override
    public void setUp() throws SetupException
    {

    }

    @Override
    public void setFileOpener(ResourceAccessor resourceAccessor)
    {

    }

    @Override
    public ValidationErrors validate(Database database)
    {
        return null;
    }
}

下面是我遇到的异常

java.lang.ClassNotFoundException: com.example.CreateTableTask liquibase.exception.ChangeLogParseException: Invalid Migration File: java.lang.ClassNotFoundException: com.example.CreateTableTask at liquibase.parser.core.xml.XMLChangeLogSAXParser.parse(XMLChangeLogSAXParser.java:132) at liquibase.Liquibase.update(Liquibase.java:107) at liquibase.integration.commandline.Main.doMigration(Main.java:825) at liquibase.integration.commandline.Main.main(Main.java:134) Caused by: org.xml.sax.SAXException: java.lang.ClassNotFoundException: com.example.CreateTableTask liquibase.exception.CustomChangeException: java.lang.ClassNotFoundException: com.example.CreateTableTask at liquibase.parser.core.xml.XMLChangeLogSAXHandler.startElement(XMLChangeLogSAXHandler.java:478) at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.startElement(AbstractSAXParser.java:509) at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.startElement(XMLSchemaValidator.java:749) at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanStartElement(XMLNSDocumentScannerImpl.java:379) at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2786) at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:606) at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:117) at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:510) at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:848) at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:777) at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:141) at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1213) at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:648) at liquibase.parser.core.xml.XMLChangeLogSAXParser.parse(XMLChangeLogSAXParser.java:98)

Answer 1

您使用什么命令启动 Liquibase？包含自定义代码的 jar 文件在哪里？

它应该工作的方式是 Liquibase 将扫描所提到的类的类路径。您可以给 liquibase.bat (或 liquibase.sh)一个参数来指定类路径，或者如果我没记错的话，Liquibase 将默认在其 lib 目录中查找。