UNIQUE 约束时 Liquibase 验证失败
Liquibase validation fails when UNIQUE constraint
我正在训练 Spring MVC 应用程序。数据库是 PostgreSQL。我希望 Liquibase 在每个 运行 上删除、重新创建、填充数据库中的所有模式。至少当我进行任何更改（创建、删除、编辑实体）时，接下来 运行 所有这些更改都会消失，正如我所期望的那样。在我的应用程序中，Liquibase 正在从 sql 文件中获取命令。现在我需要为我的一些方案添加 UNIQUE 约束，像这样
--liquibase formatted sql
--changeset oleg:create-multiple-tables splitStatements:true endDelimiter:;
DROP TABLE IF EXISTS university CASCADE;
CREATE TABLE university (
id BIGSERIAL PRIMARY KEY,
name TEXT,
UNIQUE (name)
);
之后 liquibase 开始抛出 liquibase.exception.ValidationFailedException。这是堆栈跟踪：
2020-12-01 19:14:45,473 [-127.0.0.1] [WARN ] [.s.AnnotationConfigWebApplicationContext] - Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'liquibase' defined in com.foxminded.university.spring.config.SpringConfig: Invocation of init method failed; nested exception is liquibase.exception.ValidationFailedException: Validation Failed:
1 change sets check sum
classpath:createTables.sql::create-multiple-tables::oleg was: 8:a3395a596e6e92a1baeb0c6b507beb8d but is now: 8:e66b950dd66f44bf4107495d85bbe928
2020-12-01 19:14:45,477 [-127.0.0.1] [ERROR] [ o.s.w.s.DispatcherServlet] - Context initialization failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'liquibase' defined in com.foxminded.university.spring.config.SpringConfig: Invocation of init method failed; nested exception is liquibase.exception.ValidationFailedException: Validation Failed:
1 change sets check sum
classpath:createTables.sql::create-multiple-tables::oleg was: 8:a3395a596e6e92a1baeb0c6b507beb8d but is now: 8:e66b950dd66f44bf4107495d85bbe928
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1794)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:516)
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean[=11=](AbstractBeanFactory.java:324)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:226)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:322)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:897)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:879)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:551)
at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:702)
at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:578)
at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:530)
at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:170)
at javax.servlet.GenericServlet.init(GenericServlet.java:158)
at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1144)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:988)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4885)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5199)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:743)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:719)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:705)
at org.apache.catalina.startup.HostConfig.manageApp(HostConfig.java:1720)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:567)
at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:287)
at java.management/com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:809)
at java.management/com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801)
at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:479)
at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:428)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:567)
at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:287)
at java.management/com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:809)
at java.management/com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801)
at java.management/com.sun.jmx.remote.security.MBeanServerAccessController.invoke(MBeanServerAccessController.java:468)
at java.management.rmi/javax.management.remote.rmi.RMIConnectionImpl.doOperation(RMIConnectionImpl.java:1466)
at java.management.rmi/javax.management.remote.rmi.RMIConnectionImpl$PrivilegedOperation.run(RMIConnectionImpl.java:1307)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:691)
at java.management.rmi/javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation(RMIConnectionImpl.java:1406)
at java.management.rmi/javax.management.remote.rmi.RMIConnectionImpl.invoke(RMIConnectionImpl.java:827)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:567)
at java.rmi/sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:359)
at java.rmi/sun.rmi.transport.Transport.run(Transport.java:200)
at java.rmi/sun.rmi.transport.Transport.run(Transport.java:197)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:691)
at java.rmi/sun.rmi.transport.Transport.serviceCall(Transport.java:196)
at java.rmi/sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:562)
at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:796)
at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run[=11=](TCPTransport.java:677)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:391)
at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:676)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at java.base/java.lang.Thread.run(Thread.java:830)
Caused by: liquibase.exception.ValidationFailedException: Validation Failed:
1 change sets check sum
classpath:createTables.sql::create-multiple-tables::oleg was: 8:a3395a596e6e92a1baeb0c6b507beb8d but is now: 8:e66b950dd66f44bf4107495d85bbe928
at liquibase.changelog.DatabaseChangeLog.validate(DatabaseChangeLog.java:298)
at liquibase.Liquibase.lambda$update(Liquibase.java:237)
at liquibase.Scope.lambda$child[=11=](Scope.java:160)
at liquibase.Scope.child(Scope.java:169)
at liquibase.Scope.child(Scope.java:159)
at liquibase.Scope.child(Scope.java:138)
at liquibase.Liquibase.runInScope(Liquibase.java:2277)
at liquibase.Liquibase.update(Liquibase.java:215)
at liquibase.Liquibase.update(Liquibase.java:201)
at liquibase.integration.spring.SpringLiquibase.performUpdate(SpringLiquibase.java:321)
at liquibase.integration.spring.SpringLiquibase.afterPropertiesSet(SpringLiquibase.java:269)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1853)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1790)
... 62 common frames omitted
当我删除 UNIQUE 后，一切又恢复正常了。你能帮我解决这个问题，这样我就可以在我的方案中添加 UNIQUE 约束吗？
我找到了解决该问题的方法。评论中的人帮助我找到了解决该问题的正确途径。我尝试将新的变更集添加到现有 sql 文件的末尾，如下所示：
ALTER TABLE university ADD CONSTRAINT unique_name UNIQUE (name);
但这并没有帮助。对我有帮助的解决方案是 command
mvn liquibase:clearCheckSums
在命令行中。之后，我将 UNIQUE (name) 添加到我的 CREATE TABLE 变更集中。现在 运行 上没有异常，当我尝试使用现有名称创建实体时会抛出异常，正如我所料。
我正在训练 Spring MVC 应用程序。数据库是 PostgreSQL。我希望 Liquibase 在每个 运行 上删除、重新创建、填充数据库中的所有模式。至少当我进行任何更改（创建、删除、编辑实体）时，接下来 运行 所有这些更改都会消失，正如我所期望的那样。在我的应用程序中，Liquibase 正在从 sql 文件中获取命令。现在我需要为我的一些方案添加 UNIQUE 约束，像这样
--liquibase formatted sql
--changeset oleg:create-multiple-tables splitStatements:true endDelimiter:;
DROP TABLE IF EXISTS university CASCADE;
CREATE TABLE university (
id BIGSERIAL PRIMARY KEY,
name TEXT,
UNIQUE (name)
);
之后 liquibase 开始抛出 liquibase.exception.ValidationFailedException。这是堆栈跟踪：
2020-12-01 19:14:45,473 [-127.0.0.1] [WARN ] [.s.AnnotationConfigWebApplicationContext] - Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'liquibase' defined in com.foxminded.university.spring.config.SpringConfig: Invocation of init method failed; nested exception is liquibase.exception.ValidationFailedException: Validation Failed:
1 change sets check sum
classpath:createTables.sql::create-multiple-tables::oleg was: 8:a3395a596e6e92a1baeb0c6b507beb8d but is now: 8:e66b950dd66f44bf4107495d85bbe928
2020-12-01 19:14:45,477 [-127.0.0.1] [ERROR] [ o.s.w.s.DispatcherServlet] - Context initialization failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'liquibase' defined in com.foxminded.university.spring.config.SpringConfig: Invocation of init method failed; nested exception is liquibase.exception.ValidationFailedException: Validation Failed:
1 change sets check sum
classpath:createTables.sql::create-multiple-tables::oleg was: 8:a3395a596e6e92a1baeb0c6b507beb8d but is now: 8:e66b950dd66f44bf4107495d85bbe928
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1794)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:516)
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean[=11=](AbstractBeanFactory.java:324)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:226)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:322)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:897)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:879)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:551)
at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:702)
at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:578)
at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:530)
at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:170)
at javax.servlet.GenericServlet.init(GenericServlet.java:158)
at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1144)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:988)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4885)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5199)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:743)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:719)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:705)
at org.apache.catalina.startup.HostConfig.manageApp(HostConfig.java:1720)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:567)
at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:287)
at java.management/com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:809)
at java.management/com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801)
at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:479)
at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:428)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:567)
at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:287)
at java.management/com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:809)
at java.management/com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801)
at java.management/com.sun.jmx.remote.security.MBeanServerAccessController.invoke(MBeanServerAccessController.java:468)
at java.management.rmi/javax.management.remote.rmi.RMIConnectionImpl.doOperation(RMIConnectionImpl.java:1466)
at java.management.rmi/javax.management.remote.rmi.RMIConnectionImpl$PrivilegedOperation.run(RMIConnectionImpl.java:1307)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:691)
at java.management.rmi/javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation(RMIConnectionImpl.java:1406)
at java.management.rmi/javax.management.remote.rmi.RMIConnectionImpl.invoke(RMIConnectionImpl.java:827)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:567)
at java.rmi/sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:359)
at java.rmi/sun.rmi.transport.Transport.run(Transport.java:200)
at java.rmi/sun.rmi.transport.Transport.run(Transport.java:197)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:691)
at java.rmi/sun.rmi.transport.Transport.serviceCall(Transport.java:196)
at java.rmi/sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:562)
at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:796)
at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run[=11=](TCPTransport.java:677)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:391)
at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:676)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at java.base/java.lang.Thread.run(Thread.java:830)
Caused by: liquibase.exception.ValidationFailedException: Validation Failed:
1 change sets check sum
classpath:createTables.sql::create-multiple-tables::oleg was: 8:a3395a596e6e92a1baeb0c6b507beb8d but is now: 8:e66b950dd66f44bf4107495d85bbe928
at liquibase.changelog.DatabaseChangeLog.validate(DatabaseChangeLog.java:298)
at liquibase.Liquibase.lambda$update(Liquibase.java:237)
at liquibase.Scope.lambda$child[=11=](Scope.java:160)
at liquibase.Scope.child(Scope.java:169)
at liquibase.Scope.child(Scope.java:159)
at liquibase.Scope.child(Scope.java:138)
at liquibase.Liquibase.runInScope(Liquibase.java:2277)
at liquibase.Liquibase.update(Liquibase.java:215)
at liquibase.Liquibase.update(Liquibase.java:201)
at liquibase.integration.spring.SpringLiquibase.performUpdate(SpringLiquibase.java:321)
at liquibase.integration.spring.SpringLiquibase.afterPropertiesSet(SpringLiquibase.java:269)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1853)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1790)
... 62 common frames omitted
当我删除 UNIQUE 后，一切又恢复正常了。你能帮我解决这个问题，这样我就可以在我的方案中添加 UNIQUE 约束吗？
我找到了解决该问题的方法。评论中的人帮助我找到了解决该问题的正确途径。我尝试将新的变更集添加到现有 sql 文件的末尾，如下所示：
ALTER TABLE university ADD CONSTRAINT unique_name UNIQUE (name);
但这并没有帮助。对我有帮助的解决方案是 command
mvn liquibase:clearCheckSums
在命令行中。之后，我将 UNIQUE (name) 添加到我的 CREATE TABLE 变更集中。现在 运行 上没有异常，当我尝试使用现有名称创建实体时会抛出异常，正如我所料。