java在jhipster中更新实体时，正确的解决方法是什么？

1 周，5 日 Questions & Answers 2378

我有一个modelio UML类模型。我一直在更新它，之后我运行jhipster uml。xmi重新生成实体。我总是收到错误信息。我试图从-jhipster文件中删除实体。json文件，但它没有帮助。那么，您能告诉我在开发过程中更新实体的正确解决方法是什么吗？我也尝试运行maven:diff任务，但没有成功

编辑：

我创建了一个新的jhipster应用程序，并从modelio UML类模型中创建了实体。一切正常。然后，我只在模型中添加了一个属性，并从xmi文件中重新生成实体，所有操作系统都再次被破坏

我的工作流程是： 1）将uml模型另存为xmi文件 2）运行jhipsterumlac2。xmi-分页 3）在intellijIdea中编译我的应用程序 4）运行maven task:mvn compile liquibase:diff以创建新的变更日志 5）运行应用程序 6）查看错误消息：

1 change sets check sum
      classpath:config/liquibase/changelog/20150828220237_added_entity_Employee.xml::20150828220237::jhipster is now: 7:dd10f74a01a95b4e48c592e796a1d352

部分错误：

[DEBUG] com.acontrol.config.DatabaseConfiguration - Configuring Datasource
[DEBUG] com.acontrol.config.DatabaseConfiguration - Configuring Liquibase
[ERROR] org.springframework.boot.context.embedded.tomcat.TomcatStarter - Error starting Tomcat context: org.springframework.beans.factory.BeanCreationException
[WARN] org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext - Exception encountered during context initialization - cancelling refresh attempt
org.springframework.context.ApplicationContextException: Unable to start embedded container; nested exception is org.springframework.boot.context.embedded.EmbeddedServletContainerException: Unable to start embedded Tomcat
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.onRefresh(EmbeddedWebApplicationContext.java:133) [spring-boot-1.2.5.RELEASE.jar:1.2.5.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:474) ~[spring-context-4.1.7.RELEASE.jar:4.1.7.RELEASE]
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:118) [spring-boot-1.2.5.RELEASE.jar:1.2.5.RELEASE]
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:686) [spring-boot-1.2.5.RELEASE.jar:1.2.5.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:320) [spring-boot-1.2.5.RELEASE.jar:1.2.5.RELEASE]
    at com.acontrol.Application.main(Application.java:72) [classes/:na]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_05]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_05]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_05]
    at java.lang.reflect.Method.invoke(Method.java:483) ~[na:1.8.0_05]
    at com.intellij.rt.execution.application.AppMain.main(AppMain.java:140) [idea_rt.jar:na]
Caused by: org.springframework.boot.context.embedded.EmbeddedServletContainerException: Unable to start embedded Tomcat
    at org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainer.initialize(TomcatEmbeddedServletContainer.java:98) ~[spring-boot-1.2.5.RELEASE.jar:1.2.5.RELEASE]
    at org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainer.<init>(TomcatEmbeddedServletContainer.java:75) ~[spring-boot-1.2.5.RELEASE.jar:1.2.5.RELEASE]
    at org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainerFactory.getTomcatEmbeddedServletContainer(TomcatEmbeddedServletContainerFactory.java:378) ~[spring-boot-1.2.5.RELEASE.jar:1.2.5.RELEASE]
    at org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainerFactory.getEmbeddedServletContainer(TomcatEmbeddedServletContainerFactory.java:155) ~[spring-boot-1.2.5.RELEASE.jar:1.2.5.RELEASE]
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.createEmbeddedServletContainer(EmbeddedWebApplicationContext.java:157) [spring-boot-1.2.5.RELEASE.jar:1.2.5.RELEASE]
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.onRefresh(EmbeddedWebApplicationContext.java:130) [spring-boot-1.2.5.RELEASE.jar:1.2.5.RELEASE]
    ... 10 common frames omitted
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.security.config.annotation.web.configuration.WebSecurityConfiguration': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire method: public void org.springframework.security.config.annotation.web.configuration.WebSecurityConfiguration.setFilterChainProxySecurityConfigurer(org.springframework.security.config.annotation.ObjectPostProcessor,java.util.List) throws java.lang.Exception; nested exception is org.springframework.beans.factory.BeanExpressionException: Expression parsing failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'securityConfiguration': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private org.springframework.security.core.userdetails.UserDetailsService com.acontrol.config.SecurityConfiguration.userDetailsService; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userDetailsService': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.acontrol.repository.UserRepository com.acontrol.security.UserDetailsService.userRepository; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userRepository': Cannot create inner bean '(inner bean)#5550ca83' of type [org.springframework.orm.jpa.SharedEntityManagerCreator] while setting bean property 'entityManager'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name '(inner bean)#5550ca83': Cannot resolve reference to bean 'entityManagerFactory' while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaAutoConfiguration.class]: Invocation of init method failed; nested exception is javax.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactory
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:334) ~[spring-beans-4.1.7.RELEASE.jar:4.1.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1210) ~[spring-beans-4.1.7.RELEASE.jar:4.1.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:537) ~[spring-beans-4.1.7.RELEASE.jar:4.1.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476) ~[spring-beans-4.1.7.RELEASE.jar:4.1.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303) ~[spring-beans-4.1.7.RELEASE.jar:4.1.7.RELEASE]
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[s

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共 (3) 个答案

# 1 楼答案

以防有人遇到这种情况，并且正在使用Gradle。我就是这么做的：

1st. Check master.xml file and files included there to check everything is as expected.

然后clearChecksums

根据liquidbase文档

它Removes current checksums from database. On next run checksums will be recomputed.

所以

打开liquidbase。格拉德尔并添加了以下条目：

task liquibaseClearChecksums(dependsOn: compileJava, type: JavaExec) {
    group = "liquibase"

    classpath sourceSets.main.runtimeClasspath
    classpath configurations.liquibase
    main = "liquibase.integration.commandline.Main"

    args " changeLogFile=src/main/resources/config/liquibase/changelog/" + buildTimestamp() +"_changelog.xml"
    args " referenceUrl=hibernate:spring:com.asimplemodule.deptmanager.domain?dialect=com.asimplemodule.deptmanager.domain.util.FixedPostgreSQL82Dialect&hibernate.ejb.naming_strategy=org.springframework.boot.orm.jpa.hibernate.SpringNamingStrategy"
    args " username=mycoolapp"
    args " password=mycoolapp"
    args " url=jdbc:postgresql://localhost:5432/mycoolApp"
    args " driver=org.postgresql.Driver"
    args "clearChecksums"

}

然后运行gradle liquibaseClearChecksums

这解决了我的问题

希望它能帮助别人

# 2 楼答案
当我想重新生成所有表时，我会这样做
1. 在MODELIO中更新模型
2. 再出口xmi
3. rm -rf ./.jhipster/
4. 打开文件src/main/resources/config/liquibase/master.xml并删除所有<include>元素，除了
  - config/liquibase/changelog/00000000000000_initial_schema.xml，以及
  - 评论“JHipster将在此处添加liquibase变更日志”
5. 有时我不得不从表DATABASECHANGELOG中删除行（除了第一行有ID ='00000000000001'）
6. 重新运行jhipster-uml
# 3 楼答案
问题是jhipster uml不支持演化模式。换句话说，一旦jhipster uml生成您的应用程序资产并分解变更日志，它就会忘记它做了什么，当它下次运行时，它会从头开始生成所有东西——这对大多数工件来说是好的，但对变更日志来说不是

有两种方法可以解决这个问题：
- 在重新运行jhipster之前，请删除更改日志
  - 另外，在重新运行应用程序之前，请删除所有现有的DB表
- 将jhipster uml与liquibase diff一起使用
  1. 修改你的UML模型
  2. 导出xmi
  3. 运行jhipster-uml
  4. 将所有更改还原到变更日志，包括主日志。xml（使用VCS或文件历史记录）
  5. 编译Java代码：compileJava
  6. 运行Liquibase diffliquibaseDiffChangelog：这会将您的实体与数据库的当前状态进行比较，并生成一个实际的变更日志，即包含变更并将记录添加到master。xml
  7. 使用bootRun启动应用程序：liquibase任务将执行任何未完成的变更日志
注意：删除和重命名实体时要小心：必须从前端资产、java类、变更日志、db表中删除大量孤立文件。杰普斯特实体

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java在jhipster中更新实体时，正确的解决方法是什么？

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