Spring启动应用程序不会使控制器类抛出异常

时间：2014-12-21 05:51:43

标签： spring spring-mvc spring-boot

我已经通过在pom.xml中添加插件和Spring Boot依赖项将现有的spring应用程序转换为Spring Boot应用程序。这是我的pom.xml：

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>1.1.9.RELEASE</version>
</parent>

<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    <!-- tag::actuator[] -->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-actuator</artifactId>
    </dependency>
    <!-- end::actuator[] -->

    <!-- Spring Security -->  
    <dependency>  
      <groupId>org.springframework.security</groupId>  
      <artifactId>spring-security-core</artifactId>  
      <version>3.2.5.RELEASE</version>  
    </dependency>  

    <dependency>  
      <groupId>org.springframework.security</groupId>  
      <artifactId>spring-security-web</artifactId>  
      <version>3.2.5.RELEASE</version>  
    </dependency>  

    <dependency>  
      <groupId>org.springframework.security</groupId>  
      <artifactId>spring-security-config</artifactId>  
      <version>3.2.5.RELEASE</version>  
    </dependency>
    <!-- Spring Security --> 

    <!-- odbc -->
    <dependency>
        <groupId>com.oracle</groupId>
        <artifactId>ojdbc14</artifactId>
        <version>10.2.0.2.0</version>
    </dependency>
    <!-- odbc -->

</dependencies>

<build>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
        </plugin>
    </plugins>
</build>

以下是我的控制器类：

@Controller
@ComponentScan("com.eg.example.controller")
public class HomeController {

    private static final Logger logger = LoggerFactory.getLogger(HomeController.class);

    @Autowired
    private DatabaseDAO dao;

    /*some code */

}

以下是DatabaseDAO.class 

public class DatabaseDAO {
    /*dao sepcific code*/
}

现在运行maven安装后，jar会在目标文件夹中构建，当我从命令提示符运行jar时，我收到以下错误：

  

错误SpringApplication - 应用程序启动失败org.springframework.beans.factory.BeanCreationException：使用名称＆＃39; homeController创建bean时出错＆＃39 ;:自动连接依赖项的注入失败;嵌套异常是org.springframework.beans.factory.BeanCreationException：无法自动装配字段：private com.eg.example.dao.DatabaseDAO com.eg.example.controller.HomeController.dao;嵌套异常是org.springframework.beans.factory.NoSuchBeanDefinitionException：找不到类型为[com.eg.example.dao.DatabaseDAO]的限定bean依赖：预期至少有1个bean符合此依赖关系的autowire候选者。依赖注释：{@ org.springframework.beans.factory.annotation.Autowired（required = true）}
  在org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues（AutowiredAnnotationBeanPostProcessor.java:301）〜[spring-beans-4.0.8.RELEASE.jar！/：4.0.8.RELEASE]
  在org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean（AbstractAutowireCapableBeanFactory.java:1186）〜[spring-beans-4.0.8.RELEASE.jar！/：4.0.8.RELEASE]
  在org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean（AbstractAutowireCapableBeanFactory.java:537）〜[spring-beans-4.0.8.RELEASE.jar！/：4.0.8.RELEASE]
  在org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean（AbstractAutowireCapableBeanFactory.java:475）〜[spring-beans-4.0.8.RELEASE.jar！/：4.0.8.RELEASE]
  在org.springframework.beans.factory.support.AbstractBeanFactory $ 1.getObject（AbstractBeanFactory.java:302）〜[spring-beans-4.0.8.RELEASE.jar！/：4.0.8.RELEASE]
  在org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton（DefaultSingletonBeanRegistry.java:228)~ [spring-beans-4.0.8.RELEASE.jar！/：4.0.8.RELEASE]
  在org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean（AbstractBeanFactory.java:298）〜[spring-beans-4.0.8.RELEASE.jar！/：4.0.8.RELEASE]
  在org.springframework.beans.factory.support.AbstractBeanFactory.getBean（AbstractBeanFactory.java:193）〜[spring-beans-4.0.8.RELEASE.jar！/：4.0.8.RELEASE]
  在org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons（DefaultListableBeanFactory.java:706）〜[spring-beans-4.0.8.RELEASE.jar！/：4.0.8.RELEASE]
  在org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization（AbstractApplicationContext.java:762）〜[spring-context-4.0.8.RELEASE.jar！/：4.0.8.RELEASE]
  在org.springframework.context.support.AbstractApplicationContext.refresh（AbstractApplicationContext.java:482）〜[spring-context-4.0.8.RELEASE.jar！/：4.0.8.RELEASE]
  在org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh（EmbeddedWebApplicationContext.java:109）〜[spring-boot-1.1.9.RELEASE.jar！/：1.1.9.RELEASE]
  在org.springframework.boot.SpringApplication.refresh（SpringApplication.java:691）[spring-boot-1.1.9.RELEASE.jar！/：1.1.9.RELEASE]
  在org.springframework.boot.SpringApplication.run（SpringApplication.java:320）[spring-boot-1.1.9.RELEASE.jar！/：1.1.9.RELEASE]
  在org.springframework.boot.SpringApplication.run（SpringApplication.java:952）[spring-boot-1.1.9.RELEASE.jar！/：1.1.9.RELEASE]
  在org.springframework.boot.SpringApplication.run（SpringApplication.java:941）[spring-boot-1.1.9.RELEASE.jar！/：1.1.9.RELEASE]
  在com.ge.ideate.Application.main（Application.java:17）[gs-spring-boot-0.1.0.jar！/：na]
  at sun.reflect.NativeMethodAccessorImpl.invoke0（Native Method）〜[na：1.7.0_51]
  at sun.reflect.NativeMethodAccessorImpl.invoke（Unknown Source）〜[na：1.7.0_51]
  at sun.reflect.DelegatingMethodAccessorImpl.invoke（Unknown Source）〜[na：1.7.0_51]
  在java.lang.reflect.Method.invoke（未知来源）〜[na：1.7.0_51]
  在org.springframework.boot.loader.MainMethodRunner.run（MainMethodRunner.java:53）[gs-spring-boot-0.1.0.jar！/：na]
  在java.lang.Thread.run（未知来源）[na：1.7.0_51]
  引起：org.springframework.beans.factory.BeanCreationException：无法自动装配字段：private com.eg.example.dao.DatabaseDAO com.eg.example.controller.HomeController.dao;嵌套异常是org.springframework.beans.factory.NoSuchBeanDefinitionException：找不到类型为[com.eg.example.dao.DatabaseDAO]的限定bean依赖：预期至少有1个bean符合此依赖关系的autowire候选者。依赖注释：{@ org.springframework.beans.factory.annotation.Autowired（required = true）}
  在org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor $ AutowiredFieldElement.inject（AutowiredAnnotationBeanPostProcessor.java：522）〜[spring-beans-4.0.8.RELEASE.jar！/：4.0.8.RELEASE]
  在org.springframework.beans.factory.annotation.InjectionMetadata.inject（InjectionMetadata.java:87）〜[spring-beans-4.0.8.RELEASE.jar！/：4.0.8.RELEASE]
  在org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues（AutowiredAnnotationBeanPostProcessor.java：298）〜[spring-beans-4.0.8.RELEASE.jar！/：4.0.8.RELEASE]
  ...省略了22个共同框架   引起：org.springframework.beans.factory.NoSuchBeanDefinitionException：找不到类型为[com.ge.ideate.dao.IdeateDAO]的限定bean依赖：预期至少有1个bean有资格作为此依赖项的autowire候选者。依赖注释：{@ org.springframework.beans.factory.annotation.Autowired（required = true）}
  at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoSuchBeanDefinitionException（DefaultListableBeanFactory.java:1118)~ [spring-beans-4.0.8.RELEASE.jar！/：4.0.8.RELEASE]
  在org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency（DefaultListableBeanFactory.java：967）〜[spring-beans-4.0.8.RELEASE.jar！/：4.0.8.RELEASE]
  在org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency（DefaultListableBeanFactory.java:862）〜[spring-beans-4.0.8.RELEASE.jar！/：4.0.8.RELEASE]
  在org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor $ AutowiredFieldElement.inject（AutowiredAnnotationBeanPostProcessor.java：494）〜[spring-beans-4.0.8.RELEASE.jar！/：4.0.8.RELEASE]
  ...省略了24个共同框架   java.lang.reflect.InvocationTargetException
  at sun.reflect.NativeMethodAccessorImpl.invoke0（Native Method）
  at sun.reflect.NativeMethodAccessorImpl.invoke（Unknown Source）
  at sun.reflect.DelegatingMethodAccessorImpl.invoke（Unknown Source）
  在java.lang.reflect.Method.invoke（未知来源）
  在org.springframework.boot.loader.MainMethodRunner.run（MainMethodRunner.java:53）
  在java.lang.Thread.run（未知来源）
  引起：org.springframework.beans.factory.BeanCreationException：创建名称为＆＃39; homeController＆＃39;的注册自动连接依赖项失败;嵌套异常是org.springframework.beans.factory.BeanCreationException：无法自动装配字段：private com.ge.ideate.dao.IdeateDAO com.ge.ideate.controller.HomeController.dao;嵌套异常是org.springframework.beans.factory.NoSuchBeanDefinitionException：没有为依赖项找到类型为[com.ge.ideate.dao.IdeateDAO]的限定bean：期望至少有一个bean符合此依赖关系的autowire候选资格。依赖注释：{@ org.springframework.beans.factory.annotation.Autowired（required = true）}
  在org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues（AutowiredAnnotationBeanPostProcessor.java:301）
  在org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean（AbstractAutowireCapableBeanFactory.java:1186）
  在org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean（AbstractAutowireCapableBeanFactory.java:537）
  在org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean（AbstractAutowireCapableBeanFactory.java:475）
  在org.springframework.beans.factory.support.AbstractBeanFactory $ 1.getObject（AbstractBeanFactory.java:302）
  在org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton（DefaultSingletonBeanRegistry.java:228）
  在org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean（AbstractBeanFactory.java:298）
  在org.springframework.beans.factory.support.AbstractBeanFactory.getBean（AbstractBeanFactory.java:193）
  at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons（DefaultListableBeanFactory.java:706)
  at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization（AbstractApplicationContext.java:762)
  在org.springframework.context.support.AbstractApplicationContext.refresh（AbstractApplicationContext.java:482）
  在org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh（EmbeddedWebApplicationContext.java:109）
  在org.springframework.boot.SpringApplication.refresh（SpringApplication.java:691）
  在org.springframework.boot.SpringApplication.run（SpringApplication.java:320）
  在org.springframework.boot.SpringApplication.run（SpringApplication.java:952）
  在org.springframework.boot.SpringApplication.run（SpringApplication.java:941）
  在com.ge.ideate.Application.main（Application.java:17）
  ......还有6个

我无法弄清楚错误的位置，请帮我解决这个问题。这是我的servlet-context.xml：

<?xml version="1.0" encoding="UTF-8"?>
<beans:beans xmlns="http://www.springframework.org/schema/mvc"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:beans="http://www.springframework.org/schema/beans"
    xmlns:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd
        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">

    <!-- DispatcherServlet Context: defines this servlet's request-processing infrastructure -->

    <!-- Enables the Spring MVC @Controller programming model -->
    <annotation-driven />

    <!-- Handles HTTP GET requests for /resources/** by efficiently serving up static resources in the ${webappRoot}/resources directory -->
    <resources mapping="/resources/**" location="/resources/" />

    <!-- Resolves views selected for rendering by @Controllers to .jsp resources in the /WEB-INF/views directory -->
    <beans:bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <beans:property name="prefix" value="/WEB-INF/views/" />
        <beans:property name="suffix" value=".jsp" />
    </beans:bean>

        <context:component-scan base-package="com.eg.example.*" />

</beans:beans>

1 个答案:

答案 0 :(得分：1)

您应该在@Repository级以上注释DatabaseDAO。 Spring上下文导致的这个错误无法找到bean名称DatabaseDao将其注入HomeController组件。

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