创建名为*

时间：2017-05-28 12:50:55

标签： java spring intellij-idea

我正在做那个教程：

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

当我克隆存储库时，一切都像它在那里写的一样。

该教程包含了这个类：

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);        
    }

}

现在我试着利用我所学到的东西。我将SpringBoot与Intellij Ultimate 20017一起使用，我在其他人中写了这个类

@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);
    }
}

首先我遇到了Intellij无法处理的重复豆问题。我可以通过使用限定符来解决这个问题。

但现在我得到了一个我用谷歌无法解决的新错误。

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

首先，我不明白为什么克隆导师代码工作正常，一旦我尝试失败（我甚至为了测试原因复制了他的config.java但仍然会出错！）

当然，如果你能帮我解决这个问题，那将是非常好的。

非常感谢你！ 如果您需要更多文件，请询问。 我的回购在这里https://github.com/realsony/h2TestEnv/tree/master/src

1 个答案:

答案 0 :(得分：0)

从您发布的例外情况来看，它看起来无法找到您的schema.sql文件：

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

确保schema.sql文件位于正确的位置，或者更新代码以指向schema.sql文件的实际位置。

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