誤差名創建豆*

我在做該教程的時刻：誤差名創建豆*

https://github.com/ubilife/tutorials/tree/master/spring/tutorial4

當我克隆庫的一切工作完全一樣是軟件寫在那裏。

本教程有等這個類：

Config.java

@Configuration 
@ComponentScan 
public class Config { 

    @Bean 
    public DataSource datasource() { 
     return new EmbeddedDatabaseBuilder().setType(EmbeddedDatabaseType.H2).addScript("schema.sql").build(); 
    } 

    @Bean 
    public JdbcOperations jdbcTemplate(DataSource ds) { 
     return new JdbcTemplate(ds);   
    } 

}

現在我試圖利用我學到的東西。我用SpringBoot用的IntelliJ終極20017和我等寫的類

@Configuration 
@ComponentScan 
public class SpringRootConfig { 

    @Bean(name = "scriptedDataSource") 
    public DataSource datasource() { 
     return new EmbeddedDatabaseBuilder().setType(EmbeddedDatabaseType.H2).addScript("schema.sql").build(); 
    } 

    @Bean 
    public JdbcOperations jdbcTemplate(@Qualifier("scriptedDataSource") DataSource dataSource) { 
     System.out.println("jdbcTemplate()"); 
     return new JdbcTemplate(dataSource); 
    } 
}

首先，我有這的IntelliJ無法處理重複豆類的問題。你可以看到我通過使用限定符來解決這個問題。

但現在我得到了一個新的錯誤，我無法用谷歌解決。

Error starting ApplicationContext. To display the auto-configuration report re-run your application with 'debug' enabled. 
2017-05-28 14:38:50.428 ERROR 2020 --- [   main] o.s.boot.SpringApplication    : Application startup failed 

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'scriptedDataSource' defined in class path resource [com/example/demo/SpringRootConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [javax.sql.DataSource]: Factory method 'datasource' threw exception; nested exception is org.springframework.jdbc.datasource.init.CannotReadScriptException: Cannot read SQL script from class path resource [schema.sql]; nested exception is java.io.FileNotFoundException: class path resource [schema.sql] cannot be opened because it does not exist 
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:599) ~[spring-beans-4.3.8.RELEASE.jar:4.3.8.RELEASE] 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1173) ~[spring-beans-4.3.8.RELEASE.jar:4.3.8.RELEASE] 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1067) ~[spring-beans-4.3.8.RELEASE.jar:4.3.8.RELEASE] 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:513) ~[spring-beans-4.3.8.RELEASE.jar:4.3.8.RELEASE] 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483) ~[spring-beans-4.3.8.RELEASE.jar:4.3.8.RELEASE] 
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) ~[spring-beans-4.3.8.RELEASE.jar:4.3.8.RELEASE] 
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-4.3.8.RELEASE.jar:4.3.8.RELEASE] 
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) ~[spring-beans-4.3.8.RELEASE.jar:4.3.8.RELEASE] 
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) ~[spring-beans-4.3.8.RELEASE.jar:4.3.8.RELEASE] 
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:761) ~[spring-beans-4.3.8.RELEASE.jar:4.3.8.RELEASE] 
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:866) ~[spring-context-4.3.8.RELEASE.jar:4.3.8.RELEASE] 
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:542) ~[spring-context-4.3.8.RELEASE.jar:4.3.8.RELEASE] 
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122) ~[spring-boot-1.5.3.RELEASE.jar:1.5.3.RELEASE] 
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:737) [spring-boot-1.5.3.RELEASE.jar:1.5.3.RELEASE] 
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:370) [spring-boot-1.5.3.RELEASE.jar:1.5.3.RELEASE] 
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:314) [spring-boot-1.5.3.RELEASE.jar:1.5.3.RELEASE] 
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1162) [spring-boot-1.5.3.RELEASE.jar:1.5.3.RELEASE] 
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1151) [spring-boot-1.5.3.RELEASE.jar:1.5.3.RELEASE] 
    at com.example.demo.DemoApplication.main(DemoApplication.java:17) [classes/:na] 
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [javax.sql.DataSource]: Factory method 'datasource' threw exception; nested exception is org.springframework.jdbc.datasource.init.CannotReadScriptException: Cannot read SQL script from class path resource [schema.sql]; nested exception is java.io.FileNotFoundException: class path resource [schema.sql] cannot be opened because it does not exist 
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:189) ~[spring-beans-4.3.8.RELEASE.jar:4.3.8.RELEASE] 
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:588) ~[spring-beans-4.3.8.RELEASE.jar:4.3.8.RELEASE] 
    ... 18 common frames omitted 
Caused by: org.springframework.jdbc.datasource.init.CannotReadScriptException: Cannot read SQL script from class path resource [schema.sql]; nested exception is java.io.FileNotFoundException: class path resource [schema.sql] cannot be opened because it does not exist 
    at org.springframework.jdbc.datasource.init.ScriptUtils.executeSqlScript(ScriptUtils.java:450) ~[spring-jdbc-4.3.8.RELEASE.jar:4.3.8.RELEASE] 
    at org.springframework.jdbc.datasource.init.ResourceDatabasePopulator.populate(ResourceDatabasePopulator.java:238) ~[spring-jdbc-4.3.8.RELEASE.jar:4.3.8.RELEASE] 
    at org.springframework.jdbc.datasource.init.DatabasePopulatorUtils.execute(DatabasePopulatorUtils.java:48) ~[spring-jdbc-4.3.8.RELEASE.jar:4.3.8.RELEASE] 
    at org.springframework.jdbc.datasource.embedded.EmbeddedDatabaseFactory.initDatabase(EmbeddedDatabaseFactory.java:196) ~[spring-jdbc-4.3.8.RELEASE.jar:4.3.8.RELEASE] 
    at org.springframework.jdbc.datasource.embedded.EmbeddedDatabaseFactory.getDatabase(EmbeddedDatabaseFactory.java:153) ~[spring-jdbc-4.3.8.RELEASE.jar:4.3.8.RELEASE] 
    at org.springframework.jdbc.datasource.embedded.EmbeddedDatabaseBuilder.build(EmbeddedDatabaseBuilder.java:270) ~[spring-jdbc-4.3.8.RELEASE.jar:4.3.8.RELEASE] 
    at com.example.demo.SpringRootConfig.datasource(SpringRootConfig.java:21) ~[classes/:na] 
    at com.example.demo.SpringRootConfig$$EnhancerBySpringCGLIB$$6e8fdc42.CGLIB$datasource$1(<generated>) ~[classes/:na] 
    at com.example.demo.SpringRootConfig$$EnhancerBySpringCGLIB$$6e8fdc42$$FastClassBySpringCGLIB$$39d24068.invoke(<generated>) ~[classes/:na] 
    at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228) ~[spring-core-4.3.8.RELEASE.jar:4.3.8.RELEASE] 
    at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:358) ~[spring-context-4.3.8.RELEASE.jar:4.3.8.RELEASE] 
    at com.example.demo.SpringRootConfig$$EnhancerBySpringCGLIB$$6e8fdc42.datasource(<generated>) ~[classes/:na] 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_131] 
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_131] 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_131] 
    at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_131] 
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:162) ~[spring-beans-4.3.8.RELEASE.jar:4.3.8.RELEASE] 
    ... 19 common frames omitted 
Caused by: java.io.FileNotFoundException: class path resource [schema.sql] cannot be opened because it does not exist 
    at org.springframework.core.io.ClassPathResource.getInputStream(ClassPathResource.java:172) ~[spring-core-4.3.8.RELEASE.jar:4.3.8.RELEASE] 
    at org.springframework.core.io.support.EncodedResource.getReader(EncodedResource.java:141) ~[spring-core-4.3.8.RELEASE.jar:4.3.8.RELEASE] 
    at org.springframework.jdbc.datasource.init.ScriptUtils.readScript(ScriptUtils.java:279) ~[spring-jdbc-4.3.8.RELEASE.jar:4.3.8.RELEASE] 
    at org.springframework.jdbc.datasource.init.ScriptUtils.executeSqlScript(ScriptUtils.java:447) ~[spring-jdbc-4.3.8.RELEASE.jar:4.3.8.RELEASE] 
    ... 35 common frames omitted 


Process finished with exit code 1

所以首先我不明白爲什麼克隆導師代碼工作正常，一旦我嘗試失敗（我甚至複製測試方面的原因他config.java但仍然出現錯誤！）的

當然，如果你能幫助我解決這個問題，那將是非常好的。

非常感謝！如果您需要更多文件，請直接詢問。我的回購是在這裏https://github.com/realsony/h2TestEnv/tree/master/src

來源

2017-05-28 AnnaKlein

它不起作用，因爲本教程的作者不明白Maven項目應該如何組織和保存到VCS中（因此可能不知道其他所有事物）。 YouTube是爲lolcats視頻。使用官方的Spring文檔和指南。 sql腳本應該在src/main/resources下。目標目錄是由構建生成的東西，因此不應保存在回購站中。 –

從您發佈的例外，它看起來像它無法找到您的schema.sql文件的文件：

Caused by: java.io.FileNotFoundException: class path resource [schema.sql] cannot be opened because it does not exist

確保您schema.sql文件的文件是在正確的地方，或更新您的代碼以指向您的schema.sql文件的實際位置。

來源

2017-05-28 12:58:32

誤差名創建豆*

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