Java 配置springbean

我想做一个AngularJS+SpringMVC+Hibernate+MySQL应用程序。我不知道如何配置Springbeans，这样我就可以对我的存储库和实体类使用

@Autowired

注释

pom.xml

依赖项：

<groupId>com.kspt</groupId>
<artifactId>pms</artifactId>
<version>1.0-SNAPSHOT</version>
<build>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <configuration>
                <source>1.8</source>
                <target>1.8</target>
            </configuration>
        </plugin>
    </plugins>
</build>


<properties>
    <java-version>1.8</java-version>
    <spring-core.version>4.1.6.RELEASE</spring-core.version>
    <javax.servlet-api.version>3.1.0</javax.servlet-api.version>
    <spring-data-jpa.version>1.9.2.RELEASE</spring-data-jpa.version>
    <hibernate.version>5.2.12.Final</hibernate.version>
    <mysql-connector-java.version>5.1.34</mysql-connector-java.version>
    <commons-dbcp2.version>2.1.1</commons-dbcp2.version>
    <jta.version>1.1</jta.version>
    <junit.version>4.11</junit.version>
    <spring-webmvc.version>4.1.6.RELEASE</spring-webmvc.version>
    <spring-test.version>4.1.6.RELEASE</spring-test.version>
    <jstl.version>1.2</jstl.version>
</properties>

<dependencies>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-core</artifactId>
        <version>${spring-core.version}</version>
    </dependency>

    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-jdbc</artifactId>
        <version>${spring-core.version}</version>
    </dependency>


    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-autoconfigure</artifactId>
        <version>1.0.0.RELEASE</version>
    </dependency>


    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-web</artifactId>
        <version>${spring-webmvc.version}</version>
    </dependency>

    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-webmvc</artifactId>
        <version>${spring-webmvc.version}</version>
    </dependency>
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>javax.servlet-api</artifactId>
        <version>${javax.servlet-api.version}</version>
    </dependency>

    <dependency>
        <groupId>org.springframework.data</groupId>
        <artifactId>spring-data-jpa</artifactId>
        <version>${spring-data-jpa.version}</version>
    </dependency>

    <dependency>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-core</artifactId>
        <version>2.2.3</version>
    </dependency>
    <dependency>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-databind</artifactId>
        <version>2.2.3</version>
    </dependency>
    <dependency>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-annotations</artifactId>
        <version>2.2.3</version>
    </dependency>

    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-core</artifactId>
        <version>${hibernate.version}</version>
    </dependency>
    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-entitymanager</artifactId>
        <version>${hibernate.version}</version>
    </dependency>

    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>${mysql-connector-java.version}</version>
    </dependency>

    <!--JSF (include "jsf-api" and "jsf-impl")-->
    <dependency>
        <groupId>org.glassfish</groupId>
        <artifactId>javax.faces</artifactId>
        <version>2.2.10</version>
    </dependency>
</dependencies>

用户的存储库

：

@Repository
public interface UserRepository extends JpaRepository<User, Long> {
    Optional<User> findByLogin(String login);
}

@RestController
@RequestMapping({"{login}"})
public class UserController {
    @Autowired
    UserRepository userRepository;

    @RequestMapping
    public User getUser(@PathVariable String login) {
        return userRepository.findByLogin(login)
                .orElseThrow(() -> new UserNotFoundException(login));
    }

    @RequestMapping(method = RequestMethod.POST)
    public void addUser(@PathVariable String login, @RequestBody User user) {
        userRepository.save(user);
    }
}

配置类：

@EnableWebMvc
@Configuration
@ComponentScan("com.kspt.pms")
public class AppConfig extends WebMvcConfigurerAdapter {
    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        registry.addResourceHandler("/resources/**")
                .addResourceLocations("/WEB-INF/resources/");
    }

    @Bean
    public ViewResolver getViewResolver(){
        InternalResourceViewResolver resolver = new InternalResourceViewResolver();
        resolver.setPrefix("/WEB-INF/view/");
        resolver.setSuffix(".jsp");
        return resolver;
    }

    @Override
    public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
        configurer.enable();
    }
}

web.xml

：

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
         version="3.1">

    <servlet>
        <servlet-name>dispatcher</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextClass</param-name>
            <param-value>
                org.springframework.web.context.support.AnnotationConfigWebApplicationContext
            </param-value>
        </init-param>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>
                com.kspt.pms.AppConfig
            </param-value>
        </init-param>
    </servlet>

    <servlet-mapping>
        <servlet-name>dispatcher</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

    <servlet-mapping>
        <servlet-name>dispatcher</servlet-name>
        <url-pattern>*.form</url-pattern>
    </servlet-mapping>

</web-app>

<groupId>com.kspt</groupId>
<artifactId>pms</artifactId>
<version>1.0-SNAPSHOT</version>
<build>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <configuration>
                <source>1.8</source>
                <target>1.8</target>
            </configuration>
        </plugin>
    </plugins>
</build>


<properties>
    <java-version>1.8</java-version>
    <spring-core.version>4.1.6.RELEASE</spring-core.version>
    <javax.servlet-api.version>3.1.0</javax.servlet-api.version>
    <spring-data-jpa.version>1.9.2.RELEASE</spring-data-jpa.version>
    <hibernate.version>5.2.12.Final</hibernate.version>
    <mysql-connector-java.version>5.1.34</mysql-connector-java.version>
    <commons-dbcp2.version>2.1.1</commons-dbcp2.version>
    <jta.version>1.1</jta.version>
    <junit.version>4.11</junit.version>
    <spring-webmvc.version>4.1.6.RELEASE</spring-webmvc.version>
    <spring-test.version>4.1.6.RELEASE</spring-test.version>
    <jstl.version>1.2</jstl.version>
</properties>

<dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>io.spring.platform</groupId>
            <artifactId>platform-bom</artifactId>
            <version>Brussels-SR6</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>
    </dependencies>
</dependencyManagement>

<dependencies>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-core</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-orm</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-jdbc</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-web</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-webmvc</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.data</groupId>
        <artifactId>spring-data-jpa</artifactId>
    </dependency>

    <dependency>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-core</artifactId>
        <version>2.5.2</version>
    </dependency>
    <dependency>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-databind</artifactId>
        <version>2.5.2</version>
    </dependency>
    <dependency>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-annotations</artifactId>
        <version>2.5.2</version>
    </dependency>
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>javax.servlet-api</artifactId>
        <version>${javax.servlet-api.version}</version>
    </dependency>

    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-core</artifactId>
        <version>${hibernate.version}</version>
    </dependency>
    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-entitymanager</artifactId>
        <version>${hibernate.version}</version>
    </dependency>
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>${mysql-connector-java.version}</version>
    </dependency>

    <!--JSF (include "jsf-api" and "jsf-impl")-->
    <dependency>
        <groupId>org.glassfish</groupId>
        <artifactId>javax.faces</artifactId>
        <version>2.2.10</version>
    </dependency>

    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-api</artifactId>
        <version>1.7.21</version> <!-- or use LATEST -->
    </dependency>
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-simple</artifactId>
        <version>1.7.21</version> <!-- or use LATEST -->
    </dependency>
</dependencies>

据我所知，发生这种情况是因为我没有为Spring创建一个

applicationContext.xml

文件来了解如何自动关联所有bean类。我决定尝试

@EnableAutoConfiguration

注释，以便自动生成所有必需的文件。但是，当我将该注释添加到

AppConfig

类时，会出现以下错误：

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean]: Factory method 'entityManagerFactory' threw exception; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [javax.sql.DataSource] is defined

所以我有几个问题：

我需要用bean描述创建

applicationContext.xml

文件，或者当您使用Hibernate（或Spring数据）时，它可以自动生成此文件，这是对的吗

除了以某种方式生成应用程序上下文外，是否还有其他方法不可以手动编写应用程序上下文

如果我对

applicationContext

的理解有误，那么为什么会出现这些错误

也许我只是不太理解Spring和Hybernate的概念。有人能帮我吗

没有定义[javax.sql.DataSource]类型的合格bean

这是你问题的关键。为了支持存储库和hibernate，您需要使用DB-URL、凭据等的所有配置来声明DataSourceBean

有关带注释的数据源配置示例或基于XML的配置，请参见

你需要这样的东西

@Bean
public DataSource dataSource() {
    DriverManagerDataSource dataSource = new DriverManagerDataSource();
    dataSource.setDriverClassName(env.getRequiredProperty("jdbc.driverClassName"));
    dataSource.setUrl(env.getRequiredProperty("jdbc.url"));
    dataSource.setUsername(env.getRequiredProperty("jdbc.username"));
    dataSource.setPassword(env.getRequiredProperty("jdbc.password"));
    return dataSource;
}

对我有用的是：

我在

pom.xml

中使用IO Spring平台解析依赖项和Spring库版本：

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
         version="3.1">

    <servlet>
        <servlet-name>dispatcher</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextClass</param-name>
            <param-value>
                org.springframework.web.context.support.AnnotationConfigWebApplicationContext
            </param-value>
        </init-param>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>
                com.kspt.pms.AppConfig
            </param-value>
        </init-param>
    </servlet>

    <servlet-mapping>
        <servlet-name>dispatcher</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

    <servlet-mapping>
        <servlet-name>dispatcher</servlet-name>
        <url-pattern>*.form</url-pattern>
    </servlet-mapping>

</web-app>

<groupId>com.kspt</groupId>
<artifactId>pms</artifactId>
<version>1.0-SNAPSHOT</version>
<build>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <configuration>
                <source>1.8</source>
                <target>1.8</target>
            </configuration>
        </plugin>
    </plugins>
</build>


<properties>
    <java-version>1.8</java-version>
    <spring-core.version>4.1.6.RELEASE</spring-core.version>
    <javax.servlet-api.version>3.1.0</javax.servlet-api.version>
    <spring-data-jpa.version>1.9.2.RELEASE</spring-data-jpa.version>
    <hibernate.version>5.2.12.Final</hibernate.version>
    <mysql-connector-java.version>5.1.34</mysql-connector-java.version>
    <commons-dbcp2.version>2.1.1</commons-dbcp2.version>
    <jta.version>1.1</jta.version>
    <junit.version>4.11</junit.version>
    <spring-webmvc.version>4.1.6.RELEASE</spring-webmvc.version>
    <spring-test.version>4.1.6.RELEASE</spring-test.version>
    <jstl.version>1.2</jstl.version>
</properties>

<dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>io.spring.platform</groupId>
            <artifactId>platform-bom</artifactId>
            <version>Brussels-SR6</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>
    </dependencies>
</dependencyManagement>

<dependencies>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-core</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-orm</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-jdbc</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-web</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-webmvc</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.data</groupId>
        <artifactId>spring-data-jpa</artifactId>
    </dependency>

    <dependency>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-core</artifactId>
        <version>2.5.2</version>
    </dependency>
    <dependency>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-databind</artifactId>
        <version>2.5.2</version>
    </dependency>
    <dependency>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-annotations</artifactId>
        <version>2.5.2</version>
    </dependency>
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>javax.servlet-api</artifactId>
        <version>${javax.servlet-api.version}</version>
    </dependency>

    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-core</artifactId>
        <version>${hibernate.version}</version>
    </dependency>
    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-entitymanager</artifactId>
        <version>${hibernate.version}</version>
    </dependency>
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>${mysql-connector-java.version}</version>
    </dependency>

    <!--JSF (include "jsf-api" and "jsf-impl")-->
    <dependency>
        <groupId>org.glassfish</groupId>
        <artifactId>javax.faces</artifactId>
        <version>2.2.10</version>
    </dependency>

    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-api</artifactId>
        <version>1.7.21</version> <!-- or use LATEST -->
    </dependency>
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-simple</artifactId>
        <version>1.7.21</version> <!-- or use LATEST -->
    </dependency>
</dependencies>

将

persistence.xml

文件添加到

resources/META-INF

中，并在其中声明了我的持久性单元：

<persistence-unit name="my-pms">
    <class>com.kspt.pms.entity.BugReport</class>
    <class>com.kspt.pms.entity.Comment</class>
    <class>com.kspt.pms.entity.Message</class>
    <class>com.kspt.pms.entity.Milestone</class>
    <class>com.kspt.pms.entity.Project</class>
    <class>com.kspt.pms.entity.Ticket</class>
    <class>com.kspt.pms.entity.User</class>
</persistence-unit>

com.kspt.pms.entity.BugReport
com.kspt.pms.entity.Comment
com.kspt.pms.entity.Message
com.kspt.pms.entity.Milestone
com.kspt.pms.entity.Project
com.kspt.pms.entity.Ticket
com.kspt.pms.entity.User

---

您不需要applicationContext.xml文件，这是AppConfig类的（较旧）替代品。除此之外，看看StanislavL的回答谢谢，我在我的

AppConfig

中添加了数据源bean。我是否需要使用

@EnableAutoConfiguration

注释？如果我不使用它，我仍然会得到相同的

错误创建bean

异常。如果我使用它，我会得到

org.springframework.beans.factory.BeanDefinitionStoreException:无法处理配置类[com.kspt.pms.AppConfig]的导入候选项；嵌套异常为java.lang.IllegalArgumentException:无法实例化工厂类：org.springframework.boot.autoconfigure.AutoConfigurationImportFilter

错误。这是一个版本冲突问题还是什么？看起来缺少了另一个bean。检查最深的错误。您需要声明所有相关bean-事务、实体等相关。请更新问题并发布新的堆栈跟踪眼，我将

EntityManager

和

TransactionManager

bean添加到我的AppConfig中。现在我遇到了错误

java.lang.AbstractMethodError:org.springframework.data.repository.core.support.RepositoryFactorySupport.GetTargetPository

这看起来像是版本冲突，但我无法理解热修复问题是的，我已经看到了这个问题。当作者从

pom.xml

中删除了

spring数据共享项

依赖项时，这个问题得到了解决。我从一开始就没有这种依赖性，所以这不是我的情况。如果我加上它，一切都不会改变。

<persistence-unit name="my-pms">
    <class>com.kspt.pms.entity.BugReport</class>
    <class>com.kspt.pms.entity.Comment</class>
    <class>com.kspt.pms.entity.Message</class>
    <class>com.kspt.pms.entity.Milestone</class>
    <class>com.kspt.pms.entity.Project</class>
    <class>com.kspt.pms.entity.Ticket</class>
    <class>com.kspt.pms.entity.User</class>
</persistence-unit>