Spring_SSJ集成
文章目录
- 1 三大框架
- 1.1 ssh
- 1.2 ssm(最流行的框架)
- 1.3 ssj(Spring springMvc jpa)
- 2 Spring集成JPA
- 2.1 加载jdbc.properties
- 2.2 配置ApplicationContext.xml
- 2.3 spring事物传播机制
- 2.3.1 事物配置
- 3 SpringMVC和spring集成或者整合
- 3.1 配置web.xml
- 3.2 配置ApplicationContext-mvc.xml
- 3.3 修改web.xml，解决延迟加载的异常
1 三大框架
1.1 ssh
struts
spring
hibernate
(struts2 Spring Hibernate)
1.2 ssm(最流行的框架)
SpringMVC
Spring
MyBatis
1.3 ssj(Spring springMvc jpa)
Struts2 Spring JPA
SpringMVC Spring JPA
SpringMVC Spring spring Data JPA（spring的全家桶）
2 Spring集成JPA
<dependencies>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-webartifactId>
<version>4.2.5.RELEASEversion>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-webmvcartifactId>
<version>4.2.5.RELEASEversion>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-jdbcartifactId>
<version>4.2.5.RELEASEversion>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-ormartifactId>
<version>4.2.5.RELEASEversion>
dependency>
<dependency>
<groupId>org.hibernategroupId>
<artifactId>hibernate-coreartifactId>
<version>4.3.8.Finalversion>
dependency>
<dependency>
<groupId>org.hibernategroupId>
<artifactId>hibernate-entitymanagerartifactId>
<version>4.3.8.Finalversion>
dependency>
<dependency>
<groupId>mysqlgroupId>
<artifactId>mysql-connector-javaartifactId>
<version>5.1.6version>
dependency>
<dependency>
<groupId>commons-dbcpgroupId>
<artifactId>commons-dbcpartifactId>
<version>1.2.2version>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-testartifactId>
<version>4.2.5.RELEASEversion>
dependency>
<dependency>
<groupId>org.aspectjgroupId>
<artifactId>aspectjweaverartifactId>
<version>1.8.9version>
dependency>
<dependency>
<groupId>com.fasterxml.jackson.coregroupId>
<artifactId>jackson-databindartifactId>
<version>2.6.5version>
dependency>
<dependency>
<groupId>junitgroupId>
<artifactId>junitartifactId>
<version>4.11version>
<scope>testscope>
dependency>
dependencies>
2.1 加载jdbc.properties
jdbc.driverClassName=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql:///ssj
jdbc.username=root
jdbc.password=root
2.2 配置ApplicationContext.xml
<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:tx="http://www.springframework.org/schema/tx"
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/tx
http://www.springframework.org/schema/tx/spring-tx.xsd">
<context:component-scan base-package="cn.itsource" />
<context:property-placeholder location="classpath:jdbc.properties" />
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
<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="cn.itsource.domain" />
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
<property name="showSql" value="true" />
<property name="generateDdl" value="true" />
<property name="databasePlatform" value="org.hibernate.dialect.MySQLDialect" />
bean>
property>
bean>
<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory" />
bean>
<tx:annotation-driven />
beans>
2.3 spring事物传播机制
事物的传播机制 Propagation
Propagation.REQUIRED
表示当前方法必须运行在事物中
Propagation.SUPPORTS
表示当前不需要事物，如果存在当前事物 那么就在这个事物中运行
Propagation.MANDATORY
表示该方法必须在事务中运行，如果当前事务不存在，则会抛出一个异常
Propagation.REQUIRES_NEW
表示当前方法必须运行在它自己的事务中。一个新的事务将被启动。如果存在当前事务，在该方法执行期间，
当前事务会被挂起。如果使用JTATransactionManager的话，则需要访问TransactionManager
Propagation.NOT_SUPPORTED
表示该方法不应该运行在事务中。如果存在当前事务，在该方法运行期间，当前事务将被挂起。
如果使用JTATransactionManager的话，则需要访问TransactionManager
Propagation.NEVER
表示当前方法不应该运行在事务上下文中。如果当前正有一个事务在运行，则会抛出异常
Propagation.NESTED
表示如果当前已经存在一个事务，那么该方法将会在嵌套事务中运行。嵌套的事务可以独立于当前事务进行单独地提交或回滚。
如果当前事务不存在，那么其行为与PROPAGATION_REQUIRED一样。注意各厂商对这种传播行为的支持是有所差异的。
2.3.1 事物配置
readOnly = true
只读
@Transactional(propagation = Propagation.SUPPORTS,readOnly = true)
public class ProductServiceImpl implements IProductService
如果自身的方法配置传播机制 方法上面就采用自己配置注解
@Transactional(propagation = Propagation.REQUIRED)
public void save(Product product) {
productDao.save(product);
}
3 SpringMVC和spring集成或者整合
3.1 配置web.xml
导入jar --spring-web /spring-webmvc
- 配置springmvc配置文件
- 配置前缀 后缀 (视图解析器)
- 静态资源放行
- 上传解析器
- 扫描@RequestMapping注解
<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">
<filter>
<filter-name>OpenEntityManagerInViewFilterfilter-name>
<filter-class>org.springframework.orm.jpa.support.OpenEntityManagerInViewFilterfilter-class>
filter>
<filter-mapping>
<filter-name>OpenEntityManagerInViewFilterfilter-name>
<url-pattern>/*url-pattern>
filter-mapping>
<context-param>
<param-name>contextConfigLocationparam-name>
<param-value>classpath:ApplicationContext.xmlparam-value>
context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListenerlistener-class>
listener>
<filter>
<filter-name>characterEncodingFilterfilter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilterfilter-class>
<init-param>
<param-name>encodingparam-name>
<param-value>UTF-8param-value>
init-param>
<init-param>
<param-name>forceEncodingparam-name>
<param-value>trueparam-value>
init-param>
filter>
<filter-mapping>
<filter-name>characterEncodingFilterfilter-name>
<url-pattern>/*url-pattern>
filter-mapping>
<servlet>
<servlet-name>dispatcherServletservlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServletservlet-class>
<init-param>
<param-name>contextConfigLocationparam-name>
<param-value>classpath:ApplicationContext-mvc.xmlparam-value>
init-param>
<load-on-startup>1load-on-startup>
servlet>
<servlet-mapping>
<servlet-name>dispatcherServletservlet-name>
<url-pattern>/url-pattern>
servlet-mapping>
web-app>
3.2 配置ApplicationContext-mvc.xml
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
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
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="cn.itsource.web.controller" />
<mvc:default-servlet-handler />
<mvc:annotation-driven />
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/views/" />
<property name="suffix" value=".jsp" />
bean>
beans>
3.3 修改web.xml，解决延迟加载的异常
<filter>
<filter-name>OpenEntityManagerInViewFilterfilter-name>
<filter-class>org.springframework.orm.jpa.support.OpenEntityManagerInViewFilterfilter-class>
filter>
<filter-mapping>
<filter-name>OpenEntityManagerInViewFilterfilter-name>
<url-pattern>/*url-pattern>
filter-mapping>
在Product类里面配置
@ManyToOne(fetch = FetchType.LAZY)
@JoinColumn(name="dir_id")
@JsonIgnoreProperties({"hibernateLazyInitializer", "handler"})
private ProductDir productDir;