> ## Content Index > Fetch the complete content index at: https://blog.hacking.pub/llms.txt > Use this file to discover other available public pages before exploring further. # hibernate 测试 - URL: https://blog.hacking.pub/2017/05/03/hibernate-ce-shi/ - Published: 2017-05-03T08:52:06.000Z - Updated: 2017-05-03T08:59:35.000Z - Author: chainhelen - Tags: java, hibernate, 深copy, 深拷贝 #### 问题 线上出现了一个问题，跟hibernate相关，所以想先搭建一下环境测试 #### 环境 用的idea旗舰版，很不好意思是破解的，本来是想买正版的，但是正式实在是太贵了。 新建项目Maven，使用SDK jdk 1.8 选择`Create from archetype`， `maven-archetype-webapp`项目 项目目录，如下 #### 问题 `问题1` 写测试样例的时候，报错了 ``` 四月 25, 2017 8:15:35 下午 org.junit.platform.launcher.core.ServiceLoaderTestEngineRegistry loadTestEngines 信息: Discovered TestEngines with IDs: [junit-jupiter, junit-vintage] Exception in thread "main" java.lang.NoSuchMethodError: org.junit.platform.commons.util.AnnotationUtils.findAnnotatedMethods(Ljava/lang/Class;Ljava/lang/Class;Lorg/junit/platform/commons/util/ReflectionUtils$MethodSortOrder;)Ljava/util/List; at org.junit.jupiter.engine.descriptor.LifecycleMethodUtils.findBeforeAllMethods(LifecycleMethodUtils.java:41) at org.junit.jupiter.engine.descriptor.ClassTestDescriptor.(ClassTestDescriptor.java:88) at org.junit.jupiter.engine.descriptor.ClassTestDescriptor.(ClassTestDescriptor.java:77) at org.junit.jupiter.engine.discovery.TestContainerResolver.resolveClass(TestContainerResolver.java:98) at org.junit.jupiter.engine.discovery.TestContainerResolver.resolveElement(TestContainerResolver.java:47) at org.junit.jupiter.engine.discovery.JavaElementsResolver.tryToResolveWithResolver(JavaElementsResolver.java:164) at org.junit.jupiter.engine.discovery.JavaElementsResolver.lambda$resolve$8(JavaElementsResolver.java:155) at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193) at java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1548) at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481) at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471) at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708) at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499) at org.junit.jupiter.engine.discovery.JavaElementsResolver.resolve(JavaElementsResolver.java:158) at org.junit.jupiter.engine.discovery.JavaElementsResolver.lambda$resolveForAllParents$4(JavaElementsResolver.java:128) at java.util.Collections$SingletonSet.forEach(Collections.java:4767) at org.junit.jupiter.engine.discovery.JavaElementsResolver.resolveForAllParents(JavaElementsResolver.java:127) at org.junit.jupiter.engine.discovery.JavaElementsResolver.resolveContainerWithParents(JavaElementsResolver.java:78) at org.junit.jupiter.engine.discovery.JavaElementsResolver.resolveMethod(JavaElementsResolver.java:64) at org.junit.jupiter.engine.discovery.DiscoverySelectorResolver.lambda$resolveSelectors$3(DiscoverySelectorResolver.java:63) at java.util.ArrayList.forEach(ArrayList.java:1249) at org.junit.jupiter.engine.discovery.DiscoverySelectorResolver.resolveSelectors(DiscoverySelectorResolver.java:62) at org.junit.jupiter.engine.JupiterTestEngine.resolveDiscoveryRequest(JupiterTestEngine.java:50) at org.junit.jupiter.engine.JupiterTestEngine.discover(JupiterTestEngine.java:43) at org.junit.platform.launcher.core.DefaultLauncher.discoverRoot(DefaultLauncher.java:109) at org.junit.platform.launcher.core.DefaultLauncher.discover(DefaultLauncher.java:79) at com.intellij.junit5.JUnit5IdeaTestRunner.startRunnerWithArgs(JUnit5IdeaTestRunner.java:47) at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:51) at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:237) at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70) ``` 于是在项目根目录去命令行`mvn test` ``` ------------------------------------------------------- T E S T S ------------------------------------------------------- There are no tests to run. Results : Tests run: 0, Failures: 0, Errors: 0, Skipped: 0 [INFO] ------------------------------------------------------------------------ [INFO] BUILD SUCCESS [INFO] ------------------------------------------------------------------------ [INFO] Total time: 2.512 s [INFO] Finished at: 2017-04-25T21:05:02+08:00 [INFO] Final Memory: 13M/197M [INFO] ------------------------------------------------------------------------ ``` 也就是测试没有识别到test样例 最后才发现是导入的jar包有冲突 ``` 这个jar 跟 junit是冲突的，注释掉就可以了 ``` `问题2` ``` Caused by: org.hibernate.MappingException: Could not determine type for: String, for columns: ``` ``` type指的是hibernate中的类型，不是java中的String类型，必须小写。 ``` `问题3` ``` Cannot resolve reference to bean 'txPointCut' while setting bean property 'pointcut'; ``` 在声明式事务管理器，txPointCut一直报错 换了jar包，还是不行 ``` org.aspectj aspectjweaver 1.8.9 ``` 最后做法，把target里面的lib的包都删了，重新build项目，就ok了，应该之前导入的一些Jar包冲突，修改了pom.xml，并没有自动删除掉 `问题4` ``` org.hibernate.hql.internal.ast.QuerySyntaxException: Tuser is not mapped [FROM Tuser] ``` user.hbm.xml配置里面其实是有Tuser表的映射的，通过listener把上下文的配置环境加载了 ``` contextConfigLocation classpath:/spring-hibernate.xml org.springframework.web.context.ContextLoaderListener ``` 而在spring-hibernate.xml又有标签 ``` classpath:/user.hbm.xml ``` 把user.hbm.xml的实体类加载了 最后发现hql语句中的表名应该用ORM映射出来的类名User，而不是数据库中的表名Tuser ``` select * from 表名（应该用类名） ``` `问题5` hibernate4版本过后，实体类的注解@Table中不能含有name="表名"，只能@Entity(name="类名") `问题6` 单元测试，需要如下Jar包，否则报错 ``` org.springframework spring-beans ${spring.version} org.springframework spring-test ${spring.version} provided org.springframework spring-context ${spring.version} provided ``` 最后变成了怎么启动都启动不了，最后的最后，盗了网上的一份pom.xml就好了，应该又是jar冲突的问题 #### 自动化测试 ``` @RunWith(SpringJUnit4ClassRunner.class) @ContextConfiguration(locations = "classpath:/spring-hibernate.xml") @TransactionConfiguration(defaultRollback=true) ``` 放一些这些注解，把一些xml导入进去，还有测试完成后，数据库需要清空一下，下载链接如下 [test\_web](http://imgqi.hacking.pub/test%5Fweb.zip?ref=blog.hacking.pub) #### 深copy 把需要copy的类 public class `classname` implements Serializable 实现序列化这个接口 ``` public Object deepClone() { //将对象写到流里 ByteArrayOutputStream bo=new ByteArrayOutputStream(); ObjectOutputStream oo=new ObjectOutputStream(bo); oo.writeObject(this); //从流里读出来 ByteArrayInputStream bi=new ByteArrayInputStream(bo.toByteArray()); ObjectInputStream oi=new ObjectInputStream(bi); return(oi.readObject()); } ``` 这里面有个坑，就是如果这个`classname`里面有个属性是非基本类型比如`property`类，那么`proerty`类也要implemnts Serializable，不然也得跪 这里面因为牵扯到io了，所以有checked Exception需要往上抛 #### 线上问题 因为某个属性(也是类)牵扯到了hibernate里面的东西，虽然实现了深copy，但是赋值session值出问题了，所以使用gson会报错