Liquibase 看不到实体的变化
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【中文标题】Liquibase 看不到实体的变化【英文标题】：Liquibase do not see changes in entities 【发布时间】：2015-01-23 09:16:05 【问题描述】：我正在尝试使用 liquibase 配置简单的 maven 项目。我有很多关于 liquibase-maven-plugin 和 liquibase-hibernate4 版本的问题，它们不会产生大的堆栈跟踪，但最后我几乎让它工作了。但是当我执行 mvn liquibase:diff 时，它以消息 liquibase: No changes found, nothing to do 结尾。
这是我的 pom：
<?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>pl.mlewando.ff</groupId>
<artifactId>liquibase_test</artifactId>
<version>1.0</version>
<dependencies>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-jpa</artifactId>
<version>1.7.0.RELEASE</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>4.3.6.Final</version>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.14.8</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.32</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.liquibase</groupId>
<artifactId>liquibase-maven-plugin</artifactId>
<version>3.2.1</version>
<configuration>
<changeLogFile>src/main/resources/db/db.changelog.xml</changeLogFile>
<diffChangeLogFile>src/main/resources/db/generated-db.changelog.xml</diffChangeLogFile>
<driver>com.mysql.jdbc.Driver</driver>
<url>jdbc:mysql://localhost:3306/liquibase_test?characterEncoding=utf8</url>
<username>root</username>
<password>root</password>
<referenceUrl>hibernate:spring:pl.mlewando.ff.model?dialect=org.hibernate.dialect.MySQL5InnoDBDialect</referenceUrl>
<verbose>true</verbose>
<logging>debug</logging>
</configuration>
<dependencies>
<dependency>
<groupId>org.liquibase.ext</groupId>
<artifactId>liquibase-hibernate4</artifactId>
<version>3.4</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.32</version>
</dependency>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-jpa</artifactId>
<version>1.7.0.RELEASE</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>4.3.6.Final</version>
</dependency>
</dependencies>
</plugin>
</plugins>
</build>
</project>
并从mvn liquibase:diff登录：
[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building liquibase_test_backend 1.0
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- liquibase-maven-plugin:3.2.1:diff (default-cli) @ liquibase_test_backend ---
[INFO] ------------------------------------------------------------------------
[INFO] Loading artfacts into URLClassLoader
[INFO] artifact: file:/C:/Users/mlewandowski/.m2/repository/org/springframework/data/spring-data-jpa/1.7.0.RELEASE/spring-data-jpa-1.7.0.RELEASE.jar
[INFO] artifact: file:/C:/Users/mlewandowski/.m2/repository/org/springframework/data/spring-data-commons/1.9.0.RELEASE/spring-data-commons-1.9.0.RELEASE.jar
[INFO] artifact: file:/C:/Users/mlewandowski/.m2/repository/org/springframework/spring-orm/4.0.7.RELEASE/spring-orm-4.0.7.RELEASE.jar
[INFO] artifact: file:/C:/Users/mlewandowski/.m2/repository/org/springframework/spring-jdbc/4.0.7.RELEASE/spring-jdbc-4.0.7.RELEASE.jar
[INFO] artifact: file:/C:/Users/mlewandowski/.m2/repository/org/springframework/spring-context/4.1.1.RELEASE/spring-context-4.1.1.RELEASE.jar
[INFO] artifact: file:/C:/Users/mlewandowski/.m2/repository/org/springframework/spring-expression/4.1.1.RELEASE/spring-expression-4.1.1.RELEASE.jar
[INFO] artifact: file:/C:/Users/mlewandowski/.m2/repository/org/springframework/spring-aop/4.0.7.RELEASE/spring-aop-4.0.7.RELEASE.jar
[INFO] artifact: file:/C:/Users/mlewandowski/.m2/repository/aopalliance/aopalliance/1.0/aopalliance-1.0.jar
[INFO] artifact: file:/C:/Users/mlewandowski/.m2/repository/org/springframework/spring-tx/4.0.7.RELEASE/spring-tx-4.0.7.RELEASE.jar
[INFO] artifact: file:/C:/Users/mlewandowski/.m2/repository/org/springframework/spring-beans/4.0.7.RELEASE/spring-beans-4.0.7.RELEASE.jar
[INFO] artifact: file:/C:/Users/mlewandowski/.m2/repository/org/springframework/spring-core/4.0.7.RELEASE/spring-core-4.0.7.RELEASE.jar
[INFO] artifact: file:/C:/Users/mlewandowski/.m2/repository/org/aspectj/aspectjrt/1.8.2/aspectjrt-1.8.2.jar
[INFO] artifact: file:/C:/Users/mlewandowski/.m2/repository/org/slf4j/slf4j-api/1.7.7/slf4j-api-1.7.7.jar
[INFO] artifact: file:/C:/Users/mlewandowski/.m2/repository/org/slf4j/jcl-over-slf4j/1.7.7/jcl-over-slf4j-1.7.7.jar
[INFO] artifact: file:/C:/Users/mlewandowski/.m2/repository/org/hibernate/hibernate-entitymanager/4.3.6.Final/hibernate-entitymanager-4.3.6.Final.jar
[INFO] artifact: file:/C:/Users/mlewandowski/.m2/repository/org/jboss/logging/jboss-logging/3.1.3.GA/jboss-logging-3.1.3.GA.jar
[INFO] artifact: file:/C:/Users/mlewandowski/.m2/repository/org/jboss/logging/jboss-logging-annotations/1.2.0.Beta1/jboss-logging-annotations-1.2.0.Beta1.jar
[INFO] artifact: file:/C:/Users/mlewandowski/.m2/repository/org/hibernate/hibernate-core/4.3.6.Final/hibernate-core-4.3.6.Final.jar
[INFO] artifact: file:/C:/Users/mlewandowski/.m2/repository/antlr/antlr/2.7.7/antlr-2.7.7.jar
[INFO] artifact: file:/C:/Users/mlewandowski/.m2/repository/org/jboss/jandex/1.1.0.Final/jandex-1.1.0.Final.jar
[INFO] artifact: file:/C:/Users/mlewandowski/.m2/repository/dom4j/dom4j/1.6.1/dom4j-1.6.1.jar
[INFO] artifact: file:/C:/Users/mlewandowski/.m2/repository/xml-apis/xml-apis/1.0.b2/xml-apis-1.0.b2.jar
[INFO] artifact: file:/C:/Users/mlewandowski/.m2/repository/org/hibernate/common/hibernate-commons-annotations/4.0.5.Final/hibernate-commons-annotations-4.0.5.Final.jar
[INFO] artifact: file:/C:/Users/mlewandowski/.m2/repository/org/hibernate/javax/persistence/hibernate-jpa-2.1-api/1.0.0.Final/hibernate-jpa-2.1-api-1.0.0.Final.jar
[INFO] artifact: file:/C:/Users/mlewandowski/.m2/repository/org/jboss/spec/javax/transaction/jboss-transaction-api_1.2_spec/1.0.0.Final/jboss-transaction-api_1.2_spec-1.0.0.Final.jar
[INFO] artifact: file:/C:/Users/mlewandowski/.m2/repository/org/javassist/javassist/3.18.1-GA/javassist-3.18.1-GA.jar
[INFO] artifact: file:/C:/Users/mlewandowski/.m2/repository/org/projectlombok/lombok/1.14.8/lombok-1.14.8.jar
[INFO] artifact: file:/C:/Users/mlewandowski/.m2/repository/mysql/mysql-connector-java/5.1.32/mysql-connector-java-5.1.32.jar
[INFO] artifact: file:/C:/Users/mlewandowski/IdeaProjects/forfun/liquibase_test/backend/target/classes/
[INFO] artifact: file:/C:/Users/mlewandowski/IdeaProjects/forfun/liquibase_test/backend/target/test-classes
[INFO] ------------------------------------------------------------------------
[INFO] Settings
----------------------------
[INFO] driver: com.mysql.jdbc.Driver
[INFO] url: jdbc:mysql://localhost:3306/liquibase_test?characterEncoding=utf8
[INFO] username: root
[INFO] password: *****
[INFO] use empty password: false
[INFO] properties file: null
[INFO] properties file will override? false
[INFO] prompt on non-local database? true
[INFO] clear checksums? false
[INFO] changeLogFile: src/main/resources/db/db.changelog.xml
[INFO] context(s): null
[INFO] referenceDriver: null
[INFO] referenceUrl: hibernate:spring:pl.mlewando.ff.model?dialect=org.hibernate.dialect.MySQL5InnoDBDialect
[INFO] referenceUsername: null
[INFO] referencePassword: null
[INFO] referenceDefaultSchema: null
[INFO] diffChangeLogFile: src/main/resources/db/generated-db.changelog.xml
[INFO] ------------------------------------------------------------------------
DEBUG 25.11.14 12:07: liquibase: Connected to root@localhost@jdbc:mysql://localhost:3306/liquibase_test?characterEncoding=utf8
DEBUG 25.11.14 12:07: liquibase: Setting auto commit to false from true
[INFO] Executing on Database: jdbc:mysql://localhost:3306/liquibase_test?characterEncoding=utf8
[INFO] Loading artfacts into URLClassLoader
[INFO] artifact: file:/C:/Users/mlewandowski/.m2/repository/org/springframework/data/spring-data-jpa/1.7.0.RELEASE/spring-data-jpa-1.7.0.RELEASE.jar
[INFO] artifact: file:/C:/Users/mlewandowski/.m2/repository/org/springframework/data/spring-data-commons/1.9.0.RELEASE/spring-data-commons-1.9.0.RELEASE.jar
[INFO] artifact: file:/C:/Users/mlewandowski/.m2/repository/org/springframework/spring-orm/4.0.7.RELEASE/spring-orm-4.0.7.RELEASE.jar
[INFO] artifact: file:/C:/Users/mlewandowski/.m2/repository/org/springframework/spring-jdbc/4.0.7.RELEASE/spring-jdbc-4.0.7.RELEASE.jar
[INFO] artifact: file:/C:/Users/mlewandowski/.m2/repository/org/springframework/spring-context/4.1.1.RELEASE/spring-context-4.1.1.RELEASE.jar
[INFO] artifact: file:/C:/Users/mlewandowski/.m2/repository/org/springframework/spring-expression/4.1.1.RELEASE/spring-expression-4.1.1.RELEASE.jar
[INFO] artifact: file:/C:/Users/mlewandowski/.m2/repository/org/springframework/spring-aop/4.0.7.RELEASE/spring-aop-4.0.7.RELEASE.jar
[INFO] artifact: file:/C:/Users/mlewandowski/.m2/repository/aopalliance/aopalliance/1.0/aopalliance-1.0.jar
[INFO] artifact: file:/C:/Users/mlewandowski/.m2/repository/org/springframework/spring-tx/4.0.7.RELEASE/spring-tx-4.0.7.RELEASE.jar
[INFO] artifact: file:/C:/Users/mlewandowski/.m2/repository/org/springframework/spring-beans/4.0.7.RELEASE/spring-beans-4.0.7.RELEASE.jar
[INFO] artifact: file:/C:/Users/mlewandowski/.m2/repository/org/springframework/spring-core/4.0.7.RELEASE/spring-core-4.0.7.RELEASE.jar
[INFO] artifact: file:/C:/Users/mlewandowski/.m2/repository/org/aspectj/aspectjrt/1.8.2/aspectjrt-1.8.2.jar
[INFO] artifact: file:/C:/Users/mlewandowski/.m2/repository/org/slf4j/slf4j-api/1.7.7/slf4j-api-1.7.7.jar
[INFO] artifact: file:/C:/Users/mlewandowski/.m2/repository/org/slf4j/jcl-over-slf4j/1.7.7/jcl-over-slf4j-1.7.7.jar
[INFO] artifact: file:/C:/Users/mlewandowski/.m2/repository/org/hibernate/hibernate-entitymanager/4.3.6.Final/hibernate-entitymanager-4.3.6.Final.jar
[INFO] artifact: file:/C:/Users/mlewandowski/.m2/repository/org/jboss/logging/jboss-logging/3.1.3.GA/jboss-logging-3.1.3.GA.jar
[INFO] artifact: file:/C:/Users/mlewandowski/.m2/repository/org/jboss/logging/jboss-logging-annotations/1.2.0.Beta1/jboss-logging-annotations-1.2.0.Beta1.jar
[INFO] artifact: file:/C:/Users/mlewandowski/.m2/repository/org/hibernate/hibernate-core/4.3.6.Final/hibernate-core-4.3.6.Final.jar
[INFO] artifact: file:/C:/Users/mlewandowski/.m2/repository/antlr/antlr/2.7.7/antlr-2.7.7.jar
[INFO] artifact: file:/C:/Users/mlewandowski/.m2/repository/org/jboss/jandex/1.1.0.Final/jandex-1.1.0.Final.jar
[INFO] artifact: file:/C:/Users/mlewandowski/.m2/repository/dom4j/dom4j/1.6.1/dom4j-1.6.1.jar
[INFO] artifact: file:/C:/Users/mlewandowski/.m2/repository/xml-apis/xml-apis/1.0.b2/xml-apis-1.0.b2.jar
[INFO] artifact: file:/C:/Users/mlewandowski/.m2/repository/org/hibernate/common/hibernate-commons-annotations/4.0.5.Final/hibernate-commons-annotations-4.0.5.Final.jar
[INFO] artifact: file:/C:/Users/mlewandowski/.m2/repository/org/hibernate/javax/persistence/hibernate-jpa-2.1-api/1.0.0.Final/hibernate-jpa-2.1-api-1.0.0.Final.jar
[INFO] artifact: file:/C:/Users/mlewandowski/.m2/repository/org/jboss/spec/javax/transaction/jboss-transaction-api_1.2_spec/1.0.0.Final/jboss-transaction-api_1.2_spec-1.0.0.Final.jar
[INFO] artifact: file:/C:/Users/mlewandowski/.m2/repository/org/javassist/javassist/3.18.1-GA/javassist-3.18.1-GA.jar
[INFO] artifact: file:/C:/Users/mlewandowski/.m2/repository/org/projectlombok/lombok/1.14.8/lombok-1.14.8.jar
[INFO] artifact: file:/C:/Users/mlewandowski/.m2/repository/mysql/mysql-connector-java/5.1.32/mysql-connector-java-5.1.32.jar
[INFO] artifact: file:/C:/Users/mlewandowski/IdeaProjects/forfun/liquibase_test/backend/target/classes/
[INFO] artifact: file:/C:/Users/mlewandowski/IdeaProjects/forfun/liquibase_test/backend/target/test-classes
[INFO] ------------------------------------------------------------------------
DEBUG 25.11.14 12:07: liquibase: Connected to null@hibernate:spring:pl.mlewando.ff.model?dialect=org.hibernate.dialect.MySQL5InnoDBDialect
DEBUG 25.11.14 12:07: liquibase: Not adjusting the auto commit mode; it is already false
INFO 25.11.14 12:07: liquibase-hibernate: Reading hibernate configuration hibernate:spring:pl.mlewando.ff.model?dialect=org.hibernate.dialect.MySQL5InnoDBDialect
INFO 25.11.14 12:07: liquibase-hibernate: Found package pl.mlewando.ff.model
INFO 25.11.14 12:07: liquibase-hibernate: Found dialect org.hibernate.dialect.MySQL5InnoDBDialect
INFO 25.11.14 12:07: liquibase-hibernate: Found hibernate.enhanced_idfalse
lis 25, 2014 12:07:37 PM org.hibernate.jpa.internal.util.LogHelper logPersistenceUnitInformation
INFO: HHH000204: Processing PersistenceUnitInfo [
name: default
...]
lis 25, 2014 12:07:37 PM org.hibernate.Version logVersion
INFO: HHH000412: Hibernate Core 4.3.1.Final
lis 25, 2014 12:07:37 PM org.hibernate.cfg.Environment <clinit>
INFO: HHH000206: hibernate.properties not found
lis 25, 2014 12:07:37 PM org.hibernate.cfg.Environment buildBytecodeProvider
INFO: HHH000021: Bytecode provider name : javassist
lis 25, 2014 12:07:37 PM org.hibernate.annotations.common.reflection.java.JavaReflectionManager <clinit>
INFO: HCANN000001: Hibernate Commons Annotations 4.0.5.Final
lis 25, 2014 12:07:37 PM org.hibernate.dialect.Dialect <init>
INFO: HHH000400: Using dialect: org.hibernate.dialect.MySQL5InnoDBDialect
INFO 25.11.14 12:07: liquibase-hibernate: Using dialect org.hibernate.dialect.MySQL5InnoDBDialect
[INFO] Performing Diff on database root@localhost @ jdbc:mysql://localhost:3306/liquibase_test?characterEncoding=utf8 (Default Schema: liquibase_test)
DEBUG 25.11.14 12:07: liquibase: Computed checksum for 1416913657501 as 5fde170700e5d1ee87d42598486086ef
INFO 25.11.14 12:07: liquibase-hibernate: Found table User
INFO 25.11.14 12:07: liquibase-hibernate: Found table User
INFO 25.11.14 12:07: liquibase-hibernate: Found column id bigint
INFO 25.11.14 12:07: liquibase-hibernate: Found column name varchar(255)
INFO 25.11.14 12:07: liquibase-hibernate: Found primary key UserPK
INFO 25.11.14 12:07: liquibase: src\main\resources\db\generated-db.changelog.xml exists, appending
DEBUG 25.11.14 12:07: liquibase: MissingObjectChangeGenerator type order: liquibase.structure.core.Catalog liquibase.structure.core.Schema liquibase.structure.core.Sequence liquibase.structure.core.StoredProcedure liquibase.structure.core.Table liquibase.structure.core.Column liquibase.structure.core.PrimaryKey liquibase.structure.core.UniqueConstraint liquibase.structure.core.ForeignKey liquibase.structure.core.Index liquibase.structure.core.View
DEBUG 25.11.14 12:07: liquibase: UnexpectedObjectChangeGenerator type order: liquibase.structure.core.Catalog liquibase.structure.core.ForeignKey liquibase.structure.core.Schema liquibase.structure.core.StoredProcedure liquibase.structure.core.UniqueConstraint liquibase.structure.core.View liquibase.structure.core.Table liquibase.structure.core.PrimaryKey liquibase.structure.core.Column liquibase.structure.core.Index liquibase.structure.core.Sequence
DEBUG 25.11.14 12:07: liquibase: ChangedObjectChangeGenerator type order: liquibase.structure.core.Catalog liquibase.structure.core.ForeignKey liquibase.structure.core.Schema liquibase.structure.core.Sequence liquibase.structure.core.StoredProcedure liquibase.structure.core.Table liquibase.structure.core.Column liquibase.structure.core.PrimaryKey liquibase.structure.core.Index liquibase.structure.core.UniqueConstraint liquibase.structure.core.View
INFO 25.11.14 12:07: liquibase: No changes found, nothing to do
[INFO] Differences written to Change Log File, src/main/resources/db/generated-db.changelog.xml
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 3.129 s
[INFO] Finished at: 2014-11-25T12:07:37+01:00
[INFO] Final Memory: 20M/308M
[INFO] ------------------------------------------------------------------------
在src/main/java/pl/mlewando/ff/model 我有一个简单的类：
package pl.mlewando.ff.model;
import lombok.Data;
import javax.persistence.Entity;
import javax.persistence.Id;
@Entity
@Data
class User
@Id
private long id;
private String name;
和persistence.xml 中的src/main/resources/META-INF/：
<?xml version="1.0" encoding="UTF-8"?>
<persistence xmlns="http://java.sun.com/xml/ns/persistence"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"
version="2.0">
<persistence-unit name="persistenceUnit" transaction-type="RESOURCE_LOCAL">
<provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>
<properties>
<property name="hibernate.dialect" value="org.hibernate.dialect.MySQL5InnoDBDialect" />
</properties>
</persistence-unit>
</persistence>
数据库liquibase_test 是空的，当我用空的db.changelog.xml 执行mvn liquibase:update 时，它会创建表databasechangelog 和databasechangeloglock，但是之后当我运行mvn liquibase:diff 时它仍然看不到用户表。
我做错了什么？谢谢！
编辑：
当我尝试使用此命令从命令行区分时：
liquibase
--driver=com.mysql.jdbc.Driver
--url=jdbc:mysql://localhost:3306/liquibase_test_ref
--username=root
--password=root
diffChangeLog
--referenceUrl="hibernate:spring:pl.mlewando.ff.model?dialect=org.hibernate.dialect.MySQL5InnoDBDialect"
一切正常，我最终得到了这个变更日志：
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<databaseChangeLog xmlns="http://www.liquibase.org/xml/ns/dbchangelog" xmlns:ext="http://www.liquibase.org/xml/ns/dbchangelog-ext" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.liquibase.org/xml/ns/dbchangelog http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-3.2.xsd http://www.liquibase.org/xml/ns/dbchangelog-ext http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-ext.xsd">
<changeSet author="mlewandowski (generated)" id="1416923630350-1">
<createTable tableName="User">
<column name="id" type="BIGINT">
<constraints nullable="false"/>
</column>
<column name="name" type="VARCHAR(255)"/>
</createTable>
</changeSet>
<changeSet author="mlewandowski (generated)" id="1416923630350-2">
<addPrimaryKey columnNames="id" constraintName="UserPK" tableName="User"/>
</changeSet>
</databaseChangeLog>
我有 3.2.1 版的 liquibase（与 pom.xml 中的相同）和类路径上的这些 jar：
antlr-2.7.7.jar
aopalliance-1.0.jar
aspectjrt-1.8.2.jar
dom4j-1.6.1.jar
hibernate-commons-annotations-4.0.5.Final.jar
hibernate-core-4.3.1.Final.jar
hibernate-entitymanager-4.3.6.Final.jar
hibernate-envers-4.3.1.Final.jar
hibernate-jpa-2.1-api-1.0.0.Final.jar
jandex-1.1.0.Final.jar
javassist-3.18.1-GA.jar
jboss-logging-3.1.3.GA.jar
jboss-logging-annotations-1.2.0.Beta1.jar
jboss-transaction-api_1.2_spec-1.0.0.Final.jar
jcl-over-slf4j-1.7.7.jar
liquibase_test_backend-1.0.jar
liquibase-hibernate4-3.4.jar
mysql-connector-java-5.1.33.jar
slf4j-api-1.7.7.jar
snakeyaml-1.13.jar
spring-aop-4.0.7.RELEASE.jar
spring-beans-4.0.7.RELEASE.jar
spring-context-4.1.1.RELEASE.jar
spring-core-4.0.7.RELEASE.jar
spring-data-commons-1.9.0.RELEASE.jar
spring-data-jpa-1.7.0.RELEASE.jar
spring-expression-4.1.1.RELEASE.jar
spring-jdbc-4.0.7.RELEASE.jar
spring-orm-4.0.7.RELEASE.jar
spring-tx-4.0.7.RELEASE.jar
xml-apis-1.0.b2.jar
但我真的很想通过 maven 来做。所以，再说一遍：我做错了什么？
【问题讨论】：
这只是一个假设，因为我只有非常空闲的 Liquibase 经验，但diff 命令是否有可能以 changeSet 的形式引用基于 liquibase 的更改，而不是数据库本身的更改（与以前的版本相比）。例如。假设您告诉 Liquibase“创建一个表用户”，然后用“删除一个表用户”替换该 liquibase 配置 - liquibase 不会认为这是要应用的更改，因此它显然会导致数据库结构的更改。了解我要描述的内容吗？ （另外：你根本没有任何更改文件吗？o.O）
我还没有任何更改文件，只有最初的一个：<?xml version="1.0" encoding="UTF-8" standalone="no"?> <databaseChangeLog xmlns="http://www.liquibase.org/xml/ns/dbchangelog" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.liquibase.org/xml/ns/dbchangelog http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-3.1.xsd"/> 关于Understood what i am trying to describe? - 不幸的是没有:( 但是我有空数据库，空的初始更改日志和项目中的新实体。
好的。抱歉，英语不是我的母语，因此有时我很难清楚地表达自己。然而，我试图描述的内容不再重要，因为据我记得正确 Liquibase 不会与您的（带注释的）实体交互，除非配置为这样做（例如，只有在为 Liquibase 定义了适当的变更集时才会创建表用户这样做）。但是，我此时将我注销，因为我也可能是错的 - 希望有人可以进一步帮助您，尤其是在 Spring+Liquibase 方面。
Liquibase 不会查看差异中的变更集。它只是查看您的数据库和休眠类并生成更改集。您可能遇到了与 Liquibase 3.2.1 和 liquibase-hibernate 扩展的兼容性问题。我正在完成对扩展的更新，以确保它适用于今天或明天应该发布的最新 liquibase 3.3.1。可以用最新版本重新测试吗？
好的，我会尽快重新测试新版本，但是当我尝试不同版本的 liquibase-maven-plugin 和 liquibase-hibernate4 时，我发现只有 3.2.1 形式的 maven 插件和3.4 用于扩展工程。其他版本给了我很多空指针和方法未找到异常。而且，正如我已经检查过的，我的版本在命令行中运行良好。
【参考方案1】：
我不确定这是否相关，但前段时间我在liquibase-hibernate-plugin 上发现了一个类似的错误。我使用的是带有 hiberante 4 的 Spring 本地会话工厂，但它也没有发现变化。
调试后我发现liquibase-hibernate-plugin 使用import org.springframework.orm.hibernate3.LocalSessionFactoryBean; 到HibernateSpringDatabase.java，因此它无法读取我的配置。
我更改了它并生成了一个拉取请求，现在它对我来说可以正常工作了。
如果您想尝试一下，可以使用我更改的 liquibase-hibernate-plugin 使用以下 maven 依赖项：
<dependency>
<groupId>com.github.malaguna</groupId>
<artifactId>liquibase-hibernate</artifactId>
<version>liquibase-hibernate4-3.6.1</version>
</dependency>
但是首先你必须将 JitPack repo 添加到 maven pom.xml：
<repository>
<id>jitpack.io</id>
<url>https://jitpack.io</url>
</repository>
希望对你有帮助！
【讨论】：
这个仓库还存在吗？因为当我在我的pom.xml 中添加它时，它引发了异常org.eclipse.aether.resolution.ArtifactResolutionException: Could not find artifact com.github.malaguna:liquibase-hibernate:jar:liquibase-hibernate4-3.6.1 in central (https://repo.maven.apache.org/maven2)
不再需要了，他们接受了我的拉取请求，现在它在主流版本的 liquibase-hibernate 插件中得到了解决，但我没有放弃我的 repo。您面临的问题是我的包不在 maven Central 中，正如我在回答中所说，您必须配置 jitpack 存储库。以上是关于Liquibase 看不到实体的变化的主要内容，如果未能解决你的问题，请参考以下文章
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