Spring MVC和Hibernate集成
[英]Spring MVC and Hibernate integration
问题描述
I am having problems integrating Spring MVC and Hibernate. 
我在集成Spring MVC和Hibernate时遇到问题。
I assume I am missing some configuration to tell Spring to use Hibernate, because there aren't any errors when running the application, yet the database is not updated with my entities. 我假设我缺少一些配置来告诉Spring使用Hibernate，因为在运行应用程序时没有任何错误，但是数据库并未使用我的实体进行更新。
In main/webapp/WEB-INF , I have 3 configuration files: 在main/webapp/WEB-INF ，我有3个配置文件：
web.xml web.xml中
<web-app version="2.4"
xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<display-name>Spring MVC Application</display-name>
<servlet>
<servlet-name>mvc-dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>mvc-dispatcher</servlet-name>
<url-pattern>*.htm</url-pattern>
</servlet-mapping>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>
/WEB-INF/mvc-dispatcher-servlet.xml,
/WEB-INF/spring-configuration.xml
</param-value>
</context-param>
</web-app>
mvc-dispatcher-servlet.xml MVC-调度-servlet.xml中
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="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 http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">
<context:component-scan base-package="org.mypackage.controller"/>
<context:annotation-config/>
<mvc:annotation-driven/>
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/pages/"/>
<property name="suffix" value=".jsp"/>
</bean>
</beans>
spring-configuration.xml 弹簧configuration.xml文件
<?xml version="1.0" encoding="UTF-8"?>
<beans
xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:jpa="http://www.springframework.org/schema/data/jpa"
xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa-1.3.xsd
">
<!-- Placeholder config -->
<context:property-placeholder location="classpath:database.properties" />
<jpa:repositories base-package="org.mypackage.dao"/>
<!-- Data source -->
<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="${jdbc.driverClassName}" />
<property name="url" value="${jdbc.url}" />
<property name="username" value="${jdbc.username}" />
<property name="password" value="${jdbc.password}" />
</bean>
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="packagesToScan" value="org.mypackage.model" />
<property name="jpaProperties">
<props>
<prop key="hibernate.dialect">${hibernate.dialect}</prop>
<prop key="hibernate.hbm2ddl.auto">${hibernate.hbm2ddl.auto}</prop>
<prop key="hibernate.show_sql">${hibernate.show_sql}</prop>
<prop key="hibernate.format_sql">${hibernate.format_sql}</prop>
</props>
</property>
</bean>
<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory" />
</bean>
</beans>
The database.properties : database.properties ：
jdbc.driverClassName=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/database
jdbc.username=root1
jdbc.password=password
hibernate.dialect=org.hibernate.dialect.MySQLDialect
hibernate.hbm2ddl.auto=update
hibernate.show_sql=false
hibernate.format_sql=true
In the org.mypackage.model package, I have a class annotated with @Entity . 在org.mypackage.model包中，我有一个用@Entity注释的类。 The database exists, the user exists as well. 数据库存在，用户也存在。 When I run my application, the database is not updated with a new table that corresponds to my class. 当我运行应用程序时，数据库不会使用与我的班级相对应的新表进行更新。 How can I fix this? 我怎样才能解决这个问题？
EDIT 1: 编辑1：
Output when running the application (server starting omitted, no errors): 运行应用程序时的输出（服务器启动省略，没有错误）：
INFO: Server startup in 157 ms
Connected to server
[2015-10-11 04:17:57,948] Artifact project:war exploded: Artifact is being deployed, please wait...
2015-10-11 16:18:00,274 INFO DispatcherServlet:484 - FrameworkServlet 'mvc-dispatcher': initialization started
2015-10-11 16:18:00,298 INFO XmlWebApplicationContext:510 - Refreshing WebApplicationContext for namespace 'mvc-dispatcher-servlet': startup date [Sun Oct 11 16:18:00 CEST 2015]; root of context hierarchy
2015-10-11 16:18:00,342 INFO XmlBeanDefinitionReader:317 - Loading XML bean definitions from ServletContext resource [/WEB-INF/mvc-dispatcher-servlet.xml]
2015-10-11 16:18:01,066 INFO RequestMappingHandlerMapping:220 - Mapped "{[/person/add],methods=[],params=[],headers=[],consumes=[],produces=[],custom=[]}" onto public org.springframework.web.servlet.ModelAndView org.mypackage.controller.PersonController.home()
2015-10-11 16:18:01,067 INFO RequestMappingHandlerMapping:220 - Mapped "{[/person/save],methods=[POST],params=[],headers=[],consumes=[],produces=[],custom=[]}" onto public java.lang.String org.mypackage.controller.PersonController.save(org.mypackage.model.Person,org.springframework.validation.BindingResult)
2015-10-11 16:18:01,069 INFO RequestMappingHandlerMapping:220 - Mapped "{[/hello],methods=[],params=[],headers=[],consumes=[],produces=[],custom=[]}" onto public org.springframework.web.servlet.ModelAndView org.mypackage.controller.HelloController.hello()
2015-10-11 16:18:01,119 INFO Version:27 - HV000001: Hibernate Validator 5.0.3.Final
2015-10-11 16:18:01,342 INFO RequestMappingHandlerAdapter:523 - Looking for @ControllerAdvice: WebApplicationContext for namespace 'mvc-dispatcher-servlet': startup date [Sun Oct 11 16:18:00 CEST 2015]; root of context hierarchy
2015-10-11 16:18:01,386 INFO RequestMappingHandlerAdapter:523 - Looking for @ControllerAdvice: WebApplicationContext for namespace 'mvc-dispatcher-servlet': startup date [Sun Oct 11 16:18:00 CEST 2015]; root of context hierarchy
2015-10-11 16:18:01,492 INFO DispatcherServlet:503 - FrameworkServlet 'mvc-dispatcher': initialization completed in 1215 ms
[2015-10-11 04:18:01,516] Artifact project:war exploded: Artifact is deployed successfully
[2015-10-11 04:18:01,516] Artifact project:war exploded: Deploy took 3 568 milliseconds
2015-10-11 16:18:02,723 WARN PageNotFound:1120 - No mapping found for HTTP request with URI [/] in DispatcherServlet with name 'mvc-dispatcher'
pom.xml: pom.xml中：
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.springapp</groupId>
<artifactId>project</artifactId>
<packaging>war</packaging>
<version>1.0-SNAPSHOT</version>
<name>project</name>
<properties>
<spring.version>4.1.1.RELEASE</spring.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>jsp-api</artifactId>
<version>2.1</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${spring.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.hibernate.javax.persistence</groupId>
<artifactId>hibernate-jpa-2.0-api</artifactId>
<version>1.0.1.Final</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>4.1.9.Final</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.7.2</version>
</dependency>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-jpa</artifactId>
<version>1.3.0.RELEASE</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-validator</artifactId>
<version>5.0.3.Final</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.6</version>
</dependency>
</dependencies>
<build>
<finalName>project</finalName>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.6</source>
<target>1.6</target>
</configuration>
</plugin>
<plugin>
<artifactId>maven-surefire-plugin</artifactId>
<configuration>
<includes>
<include>**/*Tests.java</include>
</includes>
</configuration>
</plugin>
</plugins>
</build>
</project>
3 个解决方案
解决方案1
1 2015-10-11 13:53:18
You can change your properties this 您可以更改属性
hibernate.hbm2ddl.auto=update
to this 对此
hibernate.hbm2ddl.auto=create
Your DB will be created from zero. 您的数据库将从零开始创建。 You may want to take the back up of your db before doing this. 在执行此操作之前，您可能需要备份数据库。
解决方案2
0 2015-10-11 14:11:32
Have you tried with the "annotatedClasses" property? 您是否尝试过使用“ annotatedClasses”属性？ I remember having the same issue before since it didn't seem to get the annotated classes so I solved it with that property, the usage below: 我记得之前也遇到过同样的问题，因为它似乎没有获得带注释的类，因此我使用该属性（以下用法）解决了该问题：
<bean id="sessionFactory"
class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="hibernateProperties">
<value>
hibernate.dialect = org.hibernate.dialect.MySQL5InnoDBDialect
hibernate.format_sql = true
hibernate.show_sql = true
hibernate.hbm2ddl.auto = create
</value>
</property>
<property name="annotatedClasses">
<list>
<value>org.company.project.model.User</value>
<value>org.company.project.model.Document</value>
</list>
</property>
<!-- <property name="packagesToScan"> -->
<!-- <list> -->
<!-- <value>org.company.project.model</value> -->
<!-- </list> -->
<!-- </property> -->
</bean>
解决方案3
0 已采纳 2015-10-11 14:40:42
I´ve created a simple application using Spring 4.1.1.RELEASE . 我已经使用Spring 4.1.1.RELEASE创建了一个简单的应用程序。
The application is running from the main method of the App.class . 该应用程序是从App.class的main方法运行的。
The configuration used was similar to yours, the only difference being the database choosen (postgresql instead of mysql). 使用的配置与您的配置相似，唯一的区别是选择了数据库（PostgreSQL代替mysql）。
In the example, an additional bean was created called jpaVendorAdapter . 在示例中，创建了另一个名为jpaVendorAdapter bean。 The configuration is as follows: 配置如下：
<bean id="jpaVendorAdapter" class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
<property name="showSql" value="true"/>
<property name="generateDdl" value="true"/>
<property name="databasePlatform" value="org.hibernate.dialect.PostgreSQL9Dialect"/>
</bean>
com.stackoverflow.App com.stackoverflow.App
public class App {
public static void main(String[] args) {
new ClassPathXmlApplicationContext("spring/Datasource.xml");
}
}
resources/properties/database.properties 资源/属性/ database.properties
jdbc.driverClassName=org.postgresql.Driver
jdbc.url=jdbc:postgresql://localhost:5432/spring
jdbc.username=postgres
jdbc.password=abc123
resources/spring/Datasource.xml 资源/弹簧/ Datasource.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
<bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="location">
<value>properties/database.properties</value>
</property>
</bean>
<bean id="dataSource"
class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="${jdbc.driverClassName}"/>
<property name="url" value="${jdbc.url}"/>
<property name="username" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
</bean>
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="dataSource"/>
<property name="packagesToScan" value="com.stackoverflow.model"/>
<property name="jpaVendorAdapter" ref="jpaVendorAdapter"/>
<property name="jpaProperties">
<props>
<prop key="hibernate.dialect">${hibernate.dialect}</prop>
<prop key="hibernate.hbm2ddl.auto">${hibernate.hbm2ddl.auto}</prop>
<prop key="hibernate.show_sql">${hibernate.show_sql}</prop>
<prop key="hibernate.format_sql">${hibernate.format_sql}</prop>
</props>
</property>
</bean>
<bean id="jpaVendorAdapter" class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
<property name="showSql" value="true"/>
<property name="generateDdl" value="true"/>
<property name="databasePlatform" value="org.hibernate.dialect.PostgreSQL9Dialect"/>
</bean>
</beans>
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