springMvc 同時整合hibernate 和mybatis
阿新 • • 發佈：2019-01-05
思路：
1.基礎TestDao介面：定義增刪改查方法；
2.編寫HibernateBaseDao 實現TestDao
3.編寫MybatisDao 繼承TestDao
4.不同的業務邏輯持久化層 繼承不同的BaseDao,例如 想用mybatis 整合MybatisBaseDao,享用hibernate,繼承HibernateBaseDao
5.在業務路基層注入baseDao
基於mysql 資料庫
具體程式碼實現：由於是測試，所以結構上有點亂....
專案結構：
2.POM:
<?xml version="1.0" encoding="UTF-8"?> <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/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.wj</groupId> <artifactId>memory</artifactId> <version>1.0-SNAPSHOT</version> <packaging>war</packaging> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <springVersion>4.2.9.RELEASE</springVersion> <slf4j.version>1.7.7</slf4j.version> <hibernateVersion>5.0.7.Final</hibernateVersion> </properties> <dependencies> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.11</version> <!-- 表示開發的時候引入，釋出的時候不會載入此包 --> <scope>test</scope> </dependency> <!-- spring核心包 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-beans</artifactId> <version>${springVersion}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> <version>${springVersion}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>${springVersion}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-orm</artifactId> <version>${springVersion}</version> </dependency> <!-- spring web + spring MVC--> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-web</artifactId> <version>${springVersion}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>${springVersion}</version> </dependency> <!-- hibernate配置--> <dependency> <groupId>org.hibernate</groupId> <artifactId>hibernate-core</artifactId> <version>${hibernateVersion}</version> </dependency> <!-- DataBase資料庫連線 mysql包--> <!-- 新增對資料庫的支援 --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>8.0.8-dmr</version> </dependency> <!-- 新增對資料來源的支援 --> <dependency> <groupId>c3p0</groupId> <artifactId>c3p0</artifactId> <version>0.9.1.2</version> </dependency> <!-- DAO框架：mybatis--> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>3.4.1</version> </dependency> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version>1.3.0</version> </dependency> <!-- JSTL標籤類 --> <dependency> <groupId>javax.servlet</groupId> <artifactId>jsp-api</artifactId> <version>2.0</version> <scope>provided</scope> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <version>3.1-b08</version> <scope>provided</scope> </dependency> <dependency> <groupId>jstl</groupId> <artifactId>jstl</artifactId> <version>1.2</version> </dependency> <!-- 日誌檔案管理包 --> <!-- log start --> <dependency> <groupId>ch.qos.logback</groupId> <artifactId>logback-classic</artifactId> <version>1.0.13</version> </dependency> <!-- 格式化物件，方便輸出日誌 --> <dependency> <groupId>com.alibaba</groupId> <artifactId>fastjson</artifactId> <version>1.1.41</version> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-api</artifactId> <version>${slf4j.version}</version> </dependency> <!-- log end --> <!-- 映入JSON --> <dependency> <groupId>org.codehaus.jackson</groupId> <artifactId>jackson-mapper-asl</artifactId> <version>1.9.13</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-core</artifactId> <version>2.5.1</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-databind</artifactId> <version>2.5.1</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-annotations</artifactId> <version>2.5.0</version> </dependency> <!-- 上傳元件包 --> <dependency> <groupId>commons-fileupload</groupId> <artifactId>commons-fileupload</artifactId> <version>1.3.1</version> </dependency> <dependency> <groupId>net.coobird</groupId> <artifactId>thumbnailator</artifactId> <version>0.4.8</version> </dependency> <!--http 請求--> <dependency> <groupId>com.squareup.okhttp3</groupId> <artifactId>okhttp</artifactId> <version>3.6.0</version> </dependency> <dependency> <groupId>net.sf.json-lib</groupId> <artifactId>json-lib</artifactId> <version>2.4</version> </dependency> <!--微信--> <dependency> <groupId>com.thoughtworks.xstream</groupId> <artifactId>xstream</artifactId> <version>1.4.3</version> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.eclipse.jetty</groupId> <artifactId>jetty-maven-plugin</artifactId> <version>9.4.5.v20170502</version> <configuration> <scanIntervalSeconds>10</scanIntervalSeconds> <httpConnector> <port>8080</port> </httpConnector> <webApp> <contextPath>/</contextPath> </webApp> </configuration> </plugin> </plugins> </build> </project>
3.配置檔案
mybatis-config.xml:
<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd"> <configuration> <!-- mybatis全域性設定 --> <settings> <!--使用資料庫自增id--> <setting name="useGeneratedKeys" value="true" /> <setting name="useColumnLabel" value="true" /> <!-- 開啟駝峰命名規範--> <setting name="mapUnderscoreToCamelCase" value="true" /> </settings> </configuration>
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:p="http://www.springframework.org/schema/p" xmlns:c="http://www.springframework.org/schema/c" xmlns:aop="http://www.springframework.org/schema/aop" 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/aop http://www.springframework.org/schema/aop/spring-aop.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"> <!-- 自動掃描 --> <context:component-scan base-package="net.memoryProject"> <!-- 掃描時跳過 @Controller 註解的JAVA類（控制器） --> <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/> </context:component-scan> <!--********************************************配置hibernate********************************************--> <!--掃描配置檔案(這裡指向的是之前配置的那個config.properties)--> <context:property-placeholder location="classpath:db.properties" /> <!--配置資料來源--> <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" > <property name="driverClass" value="${jdbc.driver}" /> <!--資料庫連線驅動--> <property name="jdbcUrl" value="${jdbc.url}" /> <!--資料庫地址--> <property name="user" value="${jdbc.username}" /> <!--使用者名稱--> <property name="password" value="${jdbc.password}" /> <!--密碼--> <!-- 設定資料庫連線池的最大連線數 --> <property name="maxPoolSize"> <value>1000</value> </property> <!-- 設定資料庫連線池的最小連線數 --> <property name="minPoolSize"> <value>20</value> </property> <!-- 設定資料庫連線池的初始化連線數 --> <property name="initialPoolSize"> <value>30</value> </property> <!-- 設定資料庫連線池的連線最大空閒時間 --> <property name="maxIdleTime"> <value>20</value> </property> <!-- c3p0快取Statement的數量數 --> <property name="maxStatements"> <value>50</value> </property> <!-- 當連線池裡面的連線用完的時候,C3P0一下獲取新的連線數 --> <property name="acquireIncrement"> <value>20</value> </property> </bean> <!--配置session工廠--> <bean id="sessionFactory" class="org.springframework.orm.hibernate5.LocalSessionFactoryBean"> <property name="dataSource" ref="dataSource" /> <property name="packagesToScan" value="net.memoryProject.entity" /> <property name="hibernateProperties"> <props> <prop key="hibernate.hbm2ddl.auto">${hibernate.hbm2ddl.auto}</prop> <!--hibernate根據實體自動生成資料庫表--> <prop key="hibernate.dialect">${hibernate.dialect}</prop> <!--指定資料庫方言--> <prop key="hibernate.show_sql">${hibernate.show_sql}</prop> <!--在控制檯顯示執行的資料庫操作語句--> <prop key="hibernate.format_sql">${hibernate.format_sql}</prop><!--在控制檯顯示執行的資料哭操作語句（格式）--> <prop key="hibernate.autoReconnect">true</prop><!--配置mysql是的時候,如果超過8小時資料庫沒有操作,會自動斷開連線,可以配置--> <prop key="hibernate.enable_lazy_load_no_trans">true</prop> <prop key="hibernate.current_session_context_class">org.springframework.orm.hibernate5.SpringSessionContext</prop> </props> </property> </bean> <!-- 用註解來實現事物管理 --> <bean id="transactionManager" class="org.springframework.orm.hibernate5.HibernateTransactionManager"> <property name="sessionFactory" ref="sessionFactory" /> </bean> <tx:annotation-driven transaction-manager="transactionManager" proxy-target-class="true"/> <bean id="hibernateTemplate" class="org.springframework.orm.hibernate5.HibernateTemplate"> <property name="sessionFactory" ref="sessionFactory"></property> </bean> <!-- mybatis檔案配置，掃描所有mapper檔案 --> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSource"/> <property name="configLocation" value="classpath:mybatis-config.xml"/> <property name="typeAliasesPackage" value="net.memoryProject.entity"/> <property name="mapperLocations" value="classpath:mapper/*.xml"/> </bean> <!-- spring與mybatis整合配置，掃描所有dao,指定的對映器類是介面,介面方法可以用註解來指定 SQL 語句,但是 MyBatis 的對映器 XML 檔案也可以用。 --> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer" p:basePackage="net.memoryProject.mybatisDao" p:sqlSessionFactoryBeanName="sqlSessionFactory"/> </beans>
spring-mvc.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:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.1.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd">
<mvc:annotation-driven>
<mvc:message-converters register-defaults="false"> <!-- 不使用預設配置 -->
<bean class="org.springframework.http.converter.StringHttpMessageConverter" />
<bean class="org.springframework.http.converter.xml.XmlAwareFormHttpMessageConverter" />
<bean class="org.springframework.http.converter.ByteArrayHttpMessageConverter" />
<bean class="org.springframework.http.converter.BufferedImageHttpMessageConverter" />
<bean class="com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter" >
<property name="supportedMediaTypes"> <!-- 支援的媒體型別 -->
<list>
<value>text/html;charset=UTF-8</value><!-- 順序不要寫反了，否則IE會出現下載提示 -->
<value>application/json;charset=UTF-8</value>
</list>
</property>
</bean>
</mvc:message-converters>
</mvc:annotation-driven>
<!-- 自動掃描該包，使SpringMVC認為包下用了@controller註解的類是控制器 -->
<context:component-scan base-package="net.memoryProject.controller"/>
<!-- 定義跳轉的檔案的前後綴 ，檢視模式配置-->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<!-- 這裡的配置我的理解是自動給後面action的方法return的字串加上字首和字尾，變成一個 可用的url地址 -->
<property name="prefix" value="/"/>
<property name="suffix" value=".jsp"/>
</bean>
<!-- 配置檔案上傳，如果沒有使用檔案上傳可以不用配置，當然如果不配，那麼配置檔案中也不必引入上傳元件包 -->
<bean id="multipartResolver"
class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<!-- 預設編碼 -->
<property name="defaultEncoding" value="utf-8"/>
<!-- 檔案大小最大值 -->
<property name="maxUploadSize" value="10485760000"/>
<!-- 記憶體中的最大值 -->
<property name="maxInMemorySize" value="40960"/>
</bean>
</beans>
TestDao：
package net.memoryProject.dao.template;
import java.util.List;
/**
* @Author: wj
* @Date: 2018/12/11 8:44
* @Version 1.0
*/
public interface TestDao<T> {
public List<T> findAll();
}
hibernateBaseDao:
package net.memoryProject.dao.template;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.orm.hibernate5.HibernateTemplate;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.util.List;
/**
* @Author: wj
* @Date: 2018/12/11 8:53
* @Version 1.0
*/
public class HibernateBaseDao<T>implements TestDao<T> {
@Autowired
private HibernateTemplate hibernateTemplate;
private Class tclazz;
private String simpleName;
public HibernateBaseDao() {
//得到當前執行類的型別，此方法是從Object繼承而來所以
//不論是this.getClass()還是super.getClass()返回的都是當前執行類
Class clazz = this.getClass();
//第二部找到當前執行類的父類的引數化型別
Type type = clazz.getGenericSuperclass();
//Type 強轉成其子介面ParameterizedType;
ParameterizedType parameterizedType = (ParameterizedType) type;
//三 、得到引數化型別的實際型別引數<Customer>
Type[] types = parameterizedType.getActualTypeArguments();
//Class 是 Type的一個實現類所以可以使用多型獲得Class
Class pclazz = (Class) types[0];
this.tclazz = pclazz;
this.simpleName = pclazz.getSimpleName();
}
public List<T> findAll() {
return (List<T>) hibernateTemplate.find("from "+tclazz.getSimpleName());
}
}
mybatisBaseDao:
package net.memoryProject.mybatisDao;
import net.memoryProject.dao.template.TestDao;
import org.apache.ibatis.annotations.Select;
import java.util.List;
/**
* @Author: wj
* @Date: 2018/12/11 8:52
* @Version 1.0
*/
public interface MybatisBaseDao<T> extends TestDao<T> {
}
兩種UserDao:
1. UserDao介面繼承MybatisBaseDao 用於訪問mybatis
package net.memoryProject.mybatisDao;
import net.memoryProject.entity.User;
import org.apache.ibatis.annotations.Select;
import java.util.List;
/**
* @Author: wj
* @Date: 2018/12/10 16:15
* @Version 1.0
*/
public interface UserDao extends MybatisBaseDao<User> {
List<User> findAll();
}
2,UserDao類繼承HibernateBaseDao 介面，走hibernate:
這裡存在Ioc容器中有同名userDao 問題 所以註解改了個名字
package net.memoryProject.dao;
import net.memoryProject.dao.template.BaseDao;
import net.memoryProject.dao.template.HibernateBaseDao;
import net.memoryProject.entity.User;
import org.springframework.stereotype.Repository;
/**
* @author wj
* @date 2018/6/29 13:32
*/
@Repository("userDaohibernate")
public class UserDao extends HibernateBaseDao<User> {
}
業務層呼叫： setBaseDao 傳入不同的bean例項，可以實現呼叫hibernate 或者 mybatis
注掉的方法也可以看看
package net.memoryProject.service.imp;
import net.memoryProject.dao.UserDao;
import net.memoryProject.dao.template.TestDao;
import net.memoryProject.entity.User;
import net.memoryProject.mybatisDao.MybatisBaseDao;
import net.memoryProject.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import java.util.ArrayList;
import java.util.List;
/**
* @author wj
* @date 2018/6/29 13:31
*/
@Transactional(rollbackFor = Exception.class)
@Service
public class UserServiceImpl implements UserService{
/* @Autowired
@Qualifier("userDaohibernate")
private UserDao userDao;
@Autowired
private net.memoryProject.mybatisDao.UserDao baseDao;
*/
private TestDao baseDao;
@Autowired
public void setTestDao(net.memoryProject.mybatisDao.UserDao dao) {
this.baseDao = dao;
}
public List<User> searchList() {
List<User> userh = baseDao.findAll();
//List<User> userm = baseDao.userList();
List<User> users = new ArrayList<User>();
users.add(userh.get(0));
//users.add(userm.get(0));
return users;
}
}