运行lagom测试时的注射器错误

我使用Lagom框架并通过mvn测试运行测试。测试失败，出现com.google.inject.CreationException。栈跟踪是运行lagom测试时的注射器错误

com.google.inject.CreationException: Unable to create injector, see 
the following errors: 

1) No implementation for 
com.lightbend.lagom.javadsl.persistence.PersistentEntityRegistry was 
bound. 
while locating 
com.lightbend.lagom.javadsl.persistence.PersistentEntityRegistry 
for parameter 0 at com.pv.svc.chat.impl.ChatServiceImpl.<init> 
(ChatServiceImpl.java:45) 
at 
com.lightbend.lagom.javadsl.server.ServiceGuiceSupport. 
bindServices(ServiceGuiceSupport.java:74) (via modules: 
com.google.inject.util.Modules$OverrideModule -> 
com.pv.svc.chat.impl.ChatServiceModule) 

2) No implementation for 
com.lightbend.lagom.javadsl.persistence.ReadSide was bound. 
while locating com.lightbend.lagom.javadsl.persistence.ReadSide 
for parameter 1 at com.pv.svc.chat.impl.ChatServiceImpl.<init> 
(ChatServiceImpl.java:45) 
at 
com.lightbend.lagom.javadsl.server.ServiceGuiceSupport. 
bindServices(ServiceGuiceSupport.java:74) (via modules: 
com.google.inject.util.Modules$OverrideModule -> 
com.pv.svc.chat.impl.ChatServiceModule) 

3) No implementation for 
com.lightbend.lagom.javadsl.persistence.jdbc.JdbcSession was bound. 
while locating 
com.lightbend.lagom.javadsl.persistence.jdbc.JdbcSession 
for parameter 2 at com.pv.svc.chat.impl.ChatServiceImpl.<init> 
(ChatServiceImpl.java:45) 
at 
com.lightbend.lagom.javadsl.server.ServiceGuiceSupport. 
bindServices(ServiceGuiceSupport.java:74) (via modules: 
com.google.inject.util.Modules$OverrideModule -> 
com.pv.svc.chat.impl.ChatServiceModule) 

3 errors 
at 

com.google.inject.internal.Errors.throwCreationExceptionIfErrorsExist 
(Errors.java:466) 
at 
com.google.inject.internal.InternalInjectorCreator. 
initializeStatically(InternalInjectorCreator.java:155) 
at 
com.google.inject.internal.InternalInjectorCreator.build 
(InternalInjectorCreator.java:107) 
at com.google.inject.Guice.createInjector(Guice.java:96) 
at com.google.inject.Guice.createInjector(Guice.java:84) 
at play.api.inject.guice.GuiceBuilder.injector 
(GuiceInjectorBuilder.scala:181) 
at play.inject.guice.GuiceBuilder.injector 
(GuiceBuilder.java:208) 
at play.inject.guice.GuiceApplicationBuilder.build 
(GuiceApplicationBuilder.java:127) 
at com.lightbend.lagom.javadsl.testkit.ServiceTest$.startServer 
(ServiceTest.scala:282) 
at com.lightbend.lagom.javadsl.testkit.ServiceTest.startServer 
(ServiceTest.scala) 
at com.pv.svc.chat.impl.ChatServiceTest.setUp 
(ChatServiceTest.java:28) 
at sun.reflect.NativeMethodAccessorImpl.invoke0 
(Native Method) 
at sun.reflect.NativeMethodAccessorImpl.invoke 
(NativeMethodAccessorImpl.java:62) 
at sun.reflect.DelegatingMethodAccessorImpl.invoke 
(DelegatingMethodAccessorImpl.java:43) 
at java.lang.reflect.Method.invoke(Method.java:498) 
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall 
(FrameworkMethod.java:47) 
at org.junit.internal.runners.model.ReflectiveCallable.run 
(ReflectiveCallable.java:12) 
at org.junit.runners.model.FrameworkMethod.invokeExplosively 
(FrameworkMethod.java:44) 
at org.junit.internal.runners.statements.RunBefores.evaluate 
(RunBefores.java:24) 
at org.junit.internal.runners.statements.RunAfters.evaluate 
(RunAfters.java:27) 
at org.junit.runners.ParentRunner.run(ParentRunner.java:309) 
at org.apache.maven.surefire.junit4.JUnit4Provider.execute 
(JUnit4Provider.java:252) 
at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet 
(JUnit4Provider.java:141) 
at org.apache.maven.surefire.junit4.JUnit4Provider.invoke 
(JUnit4Provider.java:112) 
at sun.reflect.NativeMethodAccessorImpl.invoke0 
(Native Method) 
.....

据我所知，Lagom没有在运行测试时注入依赖项。我正在使用JDBC持久实体和读取端。有什么办法可以解决这个问题吗？我的服务器设置为测试

private static TestServer server; 

@BeforeClass 
public static void setUp() { 
    server = ServiceTest.startServer(defaultSetup()); 
} 

@AfterClass 
public static void tearDown() { 
    if (server != null) { 
     server.stop(); 
     server = null; 
    } 
}

我知道卡桑德拉，我们必须使用defaultSetup（）。withCassandra（真），但对于JDBC？我也使用Kakfa来接收消息。请帮忙。

来源

2017-10-13 konghoho

嗨shik9，Lagom的testkit只支持在目前（不JDBC）卡桑德拉后端。有关更新，请参阅https://github.com/lagom/lagom/issues/304。 – ignasi35

Hi @ ignasi35，我认为这是不可能的，但有没有什么办法来模拟整个数据库的事情。我需要三件事PersistentEntityRegistry，ReadSide和JdbcSession。 – konghoho

您需要卡桑德拉添加到您的设置

@BeforeClass 
public static void setUp() { 
    server = ServiceTest.startServer(defaultSetup().withCassandra(true)); 
}

来源

2017-12-27 12:10:51 Berk

运行lagom测试时的注射器错误

回答

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