上期我們簡單寫個ssh後，今天我們用spring+springmvc+mybatis+jpa來寫個簡單的例子。
spring和springmvc可以說是無縫銜接的，這裏我們就不想ssh那樣兩兩整合，我們直接來。
首先還是新建一個maven工程test_ssm
導入我們想要的依賴
pom.xml:
<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.julyday</groupId>
<artifactId>test_ssm</artifactId>
<packaging>war</packaging>
<version>0.0.1-SNAPSHOT</version>
<name>test_ssm Maven Webapp</name>
<url>http://maven.apache.org</url>
<properties>
<commons-lang.version>2.6</commons-lang.version>
<slf4j.version>1.7.6</slf4j.version>
<spring.version>4.1.3.RELEASE</spring.version>
<jackson.version>2.5.4</jackson.version>
</properties>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-framework-bom</artifactId>
<version>${spring.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.8.4</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-oxm</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>5.0.1.Final</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>5.0.1.Final</version>
</dependency>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-jpa</artifactId>
<version>1.9.0.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
</dependency>
<dependency>
<groupId>commons-lang</groupId>
<artifactId>commons-lang</artifactId>
<version>${commons-lang.version}</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>${slf4j.version}</version>
<exclusions>
<exclusion>
<artifactId>slf4j-api</artifactId>
<groupId>org.slf4j</groupId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>${slf4j.version}</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
</dependency>
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.3.1</version>
</dependency>
<dependency>
<groupId>commons-collections</groupId>
<artifactId>commons-collections</artifactId>
<version>3.2</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>${jackson.version}</version>
</dependency>
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.3</version>
</dependency>
<!-- xml格式輸出 -->
<dependency>
<groupId>com.thoughtworks.xstream</groupId>
<artifactId>xstream</artifactId>
<version>1.4.7</version>
</dependency>
<!-- mybatis 包 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.2.8</version>
</dependency>
<!--mybatis spring 插件 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.0</version>
</dependency>
<!-- mysql連接 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.34</version>
</dependency>
<!-- 數據源 -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.0.11</version>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.projectlombok/lombok -->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.16.8</version>
</dependency>
</dependencies>
<build>
<finalName>test_ssm</finalName>
</build>
</project>
接着是web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
<display-name>test_ssm</display-name>
<!-- spring配置文件位置 -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- 編碼utf-8 -->
<filter>
<filter-name>encodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter
</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
<init-param>
<param-name>forceEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!-- Spring MVC的核心 DispatcherServlet-->
<servlet>
<servlet-name>mvc-dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring-mvc.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>mvc-dispatcher</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!-- druid數據源sql監測 -->
<servlet>
<servlet-name>DruidStatView</servlet-name>
<servlet-class>com.alibaba.druid.support.http.StatViewServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>DruidStatView</servlet-name>
<url-pattern>/druid/*</url-pattern>
</servlet-mapping>
<!-- 項目默認頁 -->
<welcome-file-list>
<welcome-file>/index.jsp</welcome-file>
</welcome-file-list>
</web-app>
spring配置文件spring.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"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:p="http://www.springframework.org/schema/p"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.1.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.1.xsd">
<!--自動掃描含有@Service將其注入爲bean -->
<context:component-scan base-package="com.julyday.service.*" />
<!-- 導入數據源 -->
<import resource="spring-datasource.xml"/>
<!-- 導入mybatis配置 -->
<import resource="spring-mybatis.xml"/>
<!-- 導入jpa配置 -->
<import resource="spring-jpa.xml"/>
</beans>springmvc配置文件：
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.1.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.1.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-4.1.xsd">
<!-- 啓用Spring基於annotation的DI, 使用戶可以在Spring MVC中使用Spring的強大功能。 激活 @Required
@Autowired,JSR 250's @PostConstruct, @PreDestroy and @Resource 等標註 -->
<context:annotation-config />
<!-- DispatcherServlet上下文， 只管理@Controller類型的bean， 忽略其他型的bean, 如@Service -->
<context:component-scan base-package="com.julyday">
<context:include-filter type="annotation"
expression="org.springframework.stereotype.Controller" />
</context:component-scan>
<!-- <context:component-scan base-package="com.julyday.controller"/> -->
<!-- 擴充了註解驅動，可以將請求參數綁定到控制器參數 -->
<mvc:annotation-driven />
<!-- 靜態資源處理，resources, css， js， imgs -->
<!--<mvc:resources mapping="/resources/**" location="/resources/" />
<mvc:resources mapping="/js/**" location="/js/" />
<mvc:resources mapping="/images/**" location="/images/" />
<mvc:resources mapping="/css/**" location="/css/" /> -->
<!-- 容器默認的DefaultServletHandler處理 所有靜態內容與無RequestMapping處理的URL -->
<mvc:default-servlet-handler/>
<!-- 配置ViewResolver。 可以用多個ViewResolver。 使用order屬性排序。 InternalResourceViewResolver放在最後。 -->
<bean
class="org.springframework.web.servlet.view.ContentNegotiatingViewResolver">
<property name="order" value="1"/>
<!-- 在沒有擴展名時即: "/user/1" 時的默認展現形式 -->
<!-- 以json作爲默認返回,方便調用,省去後綴.json -->
<!-- <property name="defaultContentType" value="application/json"></property>-->
<!-- 擴展名至mimeType的映射,即 /user.json => application/json -->
<property name="mediaTypes">
<map>
<!-- 告訴視圖解析器，返回的類型 /user/123.xml 將返回xml格式數據
/user/123.json 將返回json格式數據
/user/123.html 將返回html格式數據
favorParameter = false
/user/123?format=xml //將返回xml數據
/user/123?format=json //將返回json數據 -->
<entry key="json" value="application/json" />
<entry key="html" value="text/html" />
<entry key="xml" value="application/xml" />
</map>
</property>
<!-- 用於開啓 /userinfo/123?format=json 的支持 -->
<property name="favorParameter" value="true" />
<property name="defaultViews">
<list>
<!-- for application/json -->
<bean
class="org.springframework.web.servlet.view.json.MappingJackson2JsonView">
</bean>
<!-- for application/xml -->
<bean class="org.springframework.web.servlet.view.xml.MarshallingView">
<property name="marshaller">
<bean class="org.springframework.oxm.xstream.XStreamMarshaller" />
</property>
</bean>
</list>
</property>
<property name="ignoreAcceptHeader" value="true" />
</bean>
<bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass"
value="org.springframework.web.servlet.view.JstlView" />
<property name="prefix" value="/WEB-INF/jsp/" />
<property name="suffix" value=".jsp" />
</bean>
<!--200*1024*1024即200M resolveLazily屬性啓用是爲了推遲文件解析，以便捕獲文件大小異常 -->
<bean id="multipartResolver"
class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<property name="maxUploadSize" value="209715200" />
<property name="defaultEncoding" value="UTF-8" />
<property name="resolveLazily" value="true" />
</bean>
</beans>orm我們用到了2個，所有配置文件我也把他們分開了
數據源的spring-datasource.xml:
<?xml version="1.0" encoding="UTF-8"?>
<!-- 項目數據源配置類別 -->
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context"
xmlns:p="http://www.springframework.org/schema/p" xmlns:util="http://www.springframework.org/schema/util"
xmlns:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:cache="http://www.springframework.org/schema/cache" 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-4.1.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.1.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.1.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.1.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.1.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.1.xsd
http://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache-4.1.xsd
http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa.xsd">
<!--引入配置屬性文件 -->
<context:property-placeholder location="classpath:jdbc.properties" />
<!-- 配置數據源 使用的是Druid數據源 -->
<bean name="dataSource" class="com.alibaba.druid.pool.DruidDataSource"
init-method="init" destroy-method="close">
<property name="url" value="${jdbc.url}" />
<property name="username" value="${jdbc.username}" />
<property name="password" value="${jdbc.password}" />
<!-- 初始化連接大小 -->
<property name="initialSize" value="0" />
<!-- 連接池最大使用連接數量 -->
<property name="maxActive" value="20" />
<!-- 連接池最小空閒 -->
<property name="minIdle" value="0" />
<!-- 獲取連接最大等待時間 -->
<property name="maxWait" value="60000" />
<property name="poolPreparedStatements" value="true" />
<property name="maxPoolPreparedStatementPerConnectionSize"
value="33" />
<!-- 用來檢測有效sql -->
<property name="validationQuery" value="${validationQuery}" />
<property name="testOnBorrow" value="false" />
<property name="testOnReturn" value="false" />
<property name="testWhileIdle" value="true" />
<!-- 配置間隔多久才進行一次檢測，檢測需要關閉的空閒連接，單位是毫秒 -->
<property name="timeBetweenEvictionRunsMillis" value="60000" />
<!-- 配置一個連接在池中最小生存的時間，單位是毫秒 -->
<property name="minEvictableIdleTimeMillis" value="25200000" />
<!-- 打開removeAbandoned功能 -->
<property name="removeAbandoned" value="true" />
<!-- 1800秒，也就是30分鐘 -->
<property name="removeAbandonedTimeout" value="1800" />
<!-- 關閉abanded連接時輸出錯誤日誌 -->
<property name="logAbandoned" value="true" />
<!-- 監控數據庫 -->
<!--<property name="filters" value="mergeStat" />-->
<property name="filters" value="stat" />
<property name="connectionProperties" value="druid.stat.mergeSql=true" />
</bean>
</beans><?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:tx="http://www.springframework.org/schema/tx"
xmlns:aop="http://www.springframework.org/schema/aop" 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-4.1.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-4.1.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-4.1.xsd
http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa-1.3.xsd">
<!-- myBatis文件 -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<!-- 自動掃描entity目錄, 省掉Configuration.xml裏的手工配置 -->
<property name="typeAliasesPackage" value="com.julyday.domain" />
<!-- 顯式指定Mapper文件位置 -->
<property name="mapperLocations" value="classpath*:/mapping/*.xml" />
</bean>
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.julyday.dao" />
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" />
<property name="annotationClass" value="com.julyday.annotation.JulydayRepository" />
</bean>
<!-- 配置事務管理器 -->
<bean id="transactionManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource" />
</bean>
<!-- 註解方式配置事物 -->
<!-- <tx:annotation-driven transaction-manager="transactionManager" /> -->
<!-- 攔截器方式配置事物 -->
<tx:advice id="transactionAdvice" transaction-manager="transactionManager">
<tx:attributes>
<tx:method name="insert*" propagation="REQUIRED" />
<tx:method name="update*" propagation="REQUIRED" />
<tx:method name="delete*" propagation="REQUIRED" />
<tx:method name="get*" propagation="SUPPORTS" read-only="true" />
<tx:method name="find*" propagation="SUPPORTS" read-only="true" />
<tx:method name="select*" propagation="SUPPORTS" read-only="true" />
</tx:attributes>
</tx:advice>
<!-- Spring aop事務管理 -->
<aop:config>
<aop:pointcut id="transactionPointcut"
expression="execution(* com.julyday.service..*Impl.*(..))" />
<aop:advisor pointcut-ref="transactionPointcut"
advice-ref="transactionAdvice" />
</aop:config>
</beans>jpa配置文件：spring-jpa.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"
xmlns:tx="http://www.springframework.org/schema/tx" 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-4.1.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.1.xsd
http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa.xsd">
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<!-- 指定數據源 -->
<property name="dataSource" ref="dataSource" />
<!-- 指定Entity實體類包路徑 -->
<property name="packagesToScan">
<list>
<value>com.julyday.entity</value>
</list>
</property>
<!-- 指定JPA屬性；如Hibernate中指定是否顯示SQL的是否顯示、方言等 -->
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
<!-- 是否生成ddl文件 -->
<property name="generateDdl" value="true" />
<!-- 是否展示sql -->
<property name="showSql" value="true" />
<!-- 必要的數據庫庫使用的詳細信息 -->
<property name="databasePlatform" value="org.hibernate.dialect.MySQLDialect" />
<!-- mysql,自行選擇 -->
<property name="database" value="MYSQL"/>
</bean>
</property>
<!-- <property name="jpaProperties">
<props>
<prop key="hibernate.ejb.naming_strategy">org.hibernate.cfg.ImprovedNamingStrategy</prop>
<prop key="hibernate.hbm2ddl.auto">update</prop>
</props>
</property>-->
</bean>
<!-- Spring Data Jpa配置 -->
<!-- 配置 啓用掃描並自動創建代理的功能 factory-class="com.monk.base.jpa.PeakJpaRepositoryFactory"自己定義的bean註解方式，可以不寫，直接註解所有包下的 -->
<jpa:repositories base-package="com.julyday.dao" entity-manager-factory-ref="entityManagerFactory" />
<!-- Jpa 事務配置 -->
<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory"/>
</bean>
<!-- 開啓註解事務 -->
<tx:annotation-driven transaction-manager="transactionManager" proxy-target-class="true"/>
</beans>數據庫配置文件：jdbc.properties
validationQuery=SELECT 1
jdbc.url=jdbc:mysql://localhost:3306/ssh?useUnicode=true&characterEncoding=UTF-8
jdbc.username=root
jdbc.password=root
相信小夥伴已經看到，在mybatis裏面我們寫了一個註解，告訴mybatis這個是要他來管理的
/**
* 標識MyBatis的DAO,方便{@link org.mybatis.spring.mapper.MapperScannerConfigurer}的掃描。
*
*/
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.TYPE)
@Documented
@Component
public @interface JulydayRepository {
String value() default "";
}@JulydayRepository
public interface UserDao {
public void insert(User user);
public User find(int id);
public List<User> getList(User user);
public void update(User user);
public void delete(int id);
}@Repository
public interface AdminDao extends JpaRepository<Admin,Integer>,JpaSpecificationExecutor<Admin>{
Admin findById(int id);
List<Admin> findByNameAndPassword(String name,String password);
Page<Admin> findAll(Pageable pageable);
}那麼第一個user我們是交給mybatis去管理的，第二個admin我們是交給jpa管理的。
接着我們看下簡單的controller
@RequestMapping("/user")
@Controller
public class UserController {
@Autowired
private UserService userService;
@RequestMapping("/index")
public String index(){
return "index";
}
@RequestMapping("/find/{userId}")
public String find1(@PathVariable("userId") Integer id,Model model){
User user = userService.find(id);
model.addAttribute("user", user);
return "success";
}
@RequestMapping("/find")
public String find2(User user,Model model){
System.out.println(user.toString());
List<User> list = userService.getList(user);
model.addAttribute("user",list.get(0));
return "success";
}
@RequestMapping("/findAll")
@ResponseBody
public String findAll(){
List<User> list = userService.getList(new User());
return JSONObject.toJSONString(list);
}
}
當然我們選擇了druid數據源我們也可以用他來做sql的監測
好的，最後我們把源碼文件放上做參考，源碼文件下載