mybatis3.2.8 与 hibernate4.3.6 混用
mybatis、hibernate这二个框架各有特色，对于复杂的查询，利用mybatis直接手写sql控制起来更灵活，而一般的insert/update，hibernate比较方便。同一个项目中，这二个框架可以和谐共存，下面是一些步骤：
一、版本要求
Spring 4.11 + hibernate 4.3.6 + mybatis 3.2.8 + struts 2.3.16.3 (这是目前各框架的最新版本)
建议：如果用hibernate 4.x ，Spring最好也是4.x系列，否则getCurrentSession()容易报错。
二、pom.xml依赖项
<?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/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>infosky</groupId>
<artifactId>struts2-rest-ex</artifactId>
<packaging>war</packaging>
<version>1.0</version>
<properties>
<java-version>1.6</java-version>
<struts2.version>2.3.16.3</struts2.version>
<spring.version>4.1.1.RELEASE</spring.version>
<mybatis.version>3.2.8</mybatis.version>
<hibernate.version>4.3.6.Final</hibernate.version>
</properties>
<dependencies> <dependency>
<groupId>commons-dbcp</groupId>
<artifactId>commons-dbcp</artifactId>
<version>1.4</version>
</dependency> <!-- oracle -->
<dependency>
<groupId>com.oracle</groupId>
<artifactId>ojdbc6</artifactId>
<version>11.2.0.3</version>
</dependency> <dependency>
<groupId>asm</groupId>
<artifactId>asm</artifactId>
<version>3.3.1</version>
</dependency> <dependency>
<groupId>asm</groupId>
<artifactId>asm-commons</artifactId>
<version>3.3.1</version>
</dependency> <dependency>
<groupId>asm</groupId>
<artifactId>asm-tree</artifactId>
<version>3.3.1</version>
</dependency> <dependency>
<groupId>commons-beanutils</groupId>
<artifactId>commons-beanutils</artifactId>
<version>1.8.3</version>
</dependency> <dependency>
<groupId>commons-collections</groupId>
<artifactId>commons-collections</artifactId>
<version>3.2.1</version>
</dependency> <dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.3</version>
</dependency> <dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.2</version>
</dependency> <dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.1</version>
</dependency> <dependency>
<groupId>javassist</groupId>
<artifactId>javassist</artifactId>
<version>3.12.1.GA</version>
</dependency> <dependency>
<groupId>ognl</groupId>
<artifactId>ognl</artifactId>
<version>3.0.6</version>
</dependency> <!-- log -->
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-api</artifactId>
<version>2.0.2</version>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-core</artifactId>
<version>2.0.2</version>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-web</artifactId>
<version>2.0.2</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.7.7</version>
</dependency> <dependency>
<groupId>net.sf.ezmorph</groupId>
<artifactId>ezmorph</artifactId>
<version>1.0.6</version>
</dependency> <dependency>
<groupId>org.freemarker</groupId>
<artifactId>freemarker</artifactId>
<version>2.3.19</version>
</dependency> <dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-core-asl</artifactId>
<version>1.9.10</version>
</dependency> <dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-mapper-asl</artifactId>
<version>1.9.10</version>
</dependency> <dependency>
<groupId>net.sf.json-lib</groupId>
<artifactId>json-lib</artifactId>
<version>2.4</version>
<classifier>jdk15</classifier>
</dependency> <dependency>
<groupId>org.apache.struts</groupId>
<artifactId>struts2-convention-plugin</artifactId>
<version>2.3.16</version>
</dependency> <dependency>
<groupId>org.apache.struts</groupId>
<artifactId>struts2-config-browser-plugin</artifactId>
<version>2.3.16</version>
</dependency> <dependency>
<groupId>org.apache.struts</groupId>
<artifactId>struts2-core</artifactId>
<version>${struts2.version}</version>
</dependency> <dependency>
<groupId>org.apache.struts</groupId>
<artifactId>struts2-rest-plugin</artifactId>
<version>2.3.16</version>
</dependency> <dependency>
<groupId>com.thoughtworks.xstream</groupId>
<artifactId>xstream</artifactId>
<version>1.4.3</version>
</dependency> <dependency>
<groupId>org.apache.struts.xwork</groupId>
<artifactId>xwork-core</artifactId>
<version>${struts2.version}</version>
</dependency> <!-- Servlet -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
<scope>provided</scope>
</dependency> <!-- spring -->
<dependency>
<groupId>org.apache.struts</groupId>
<artifactId>struts2-spring-plugin</artifactId>
<version>${struts2.version}</version>
</dependency> <dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version>
</dependency> <dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>${spring.version}</version>
</dependency> <dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>${spring.version}</version>
</dependency> <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>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version>
</dependency> <dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>${spring.version}</version>
</dependency> <dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-expression</artifactId>
<version>${spring.version}</version>
</dependency> <dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring.version}</version>
</dependency> <dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${spring.version}</version>
</dependency> <dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>${spring.version}</version>
</dependency> <dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.7.3</version>
</dependency> <dependency>
<groupId>aopalliance</groupId>
<artifactId>aopalliance</artifactId>
<version>1.0</version>
</dependency> <dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
</dependency> <!-- mybatis -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.2.2</version>
</dependency> <dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>${mybatis.version}</version>
</dependency> <dependency>
<groupId>com.github.miemiedev</groupId>
<artifactId>mybatis-paginator</artifactId>
<version>1.2.15</version>
</dependency> <!-- hibernate -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>${hibernate.version}</version>
</dependency> <dependency>
<groupId>xml-apis</groupId>
<artifactId>xml-apis</artifactId>
<version>1.0.b2</version>
<scope>provided</scope>
</dependency> </dependencies> <profiles>
<profile>
<!-- 开发环境 -->
<id>dev</id>
<properties>
<db-url>jdbc:oracle:thin:@172.21.129.51:1521:orcl</db-url>
<db-username>***</db-username>
<db-password>***</db-password>
</properties>
<!-- 默认激活本环境 -->
<activation>
<activeByDefault>true</activeByDefault>
</activation>
</profile>
<profile>
<!-- 测试环境 -->
<id>test</id>
<properties>
<db-url>jdbc:oracle:thin:@172.21.129.51:1521:orcl</db-url>
<db-username>***</db-username>
<db-password>***</db-password>
</properties>
</profile>
</profiles> <build>
<finalName>struts2-rest-ex</finalName>
<resources>
<resource>
<directory>src/main/resources</directory>
<filtering>true</filtering>
</resource>
</resources>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.5.1</version>
<configuration>
<source>1.6</source>
<target>1.6</target>
<encoding>utf-8</encoding>
</configuration>
</plugin> <plugin>
<artifactId>maven-source-plugin</artifactId>
<version>2.1.2</version>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>jar-no-fork</goal>
</goals>
</execution>
</executions>
</plugin> <plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.16</version>
<configuration>
<forkMode>once</forkMode>
<argLine>-Dfile.encoding=UTF-8</argLine>
</configuration>
</plugin>
</plugins>
</build>
<organization>
<name>yjmyzz</name>
<url>http://yjmyzz.cnblogs.com/</url>
</organization> </project>
最终打包后，WEB-INF/lib下的jar文件列表为：
antlr-2.7.7.jar
aopalliance-1.0.jar
asm-3.3.1.jar
asm-commons-3.3.1.jar
asm-tree-3.3.1.jar
aspectjweaver-1.7.3.jar
commons-beanutils-1.8.3.jar
commons-collections-3.2.1.jar
commons-dbcp-1.4.jar
commons-fileupload-1.3.jar
commons-io-2.2.jar
commons-lang-2.3.jar
commons-lang3-3.1.jar
commons-logging-1.1.1.jar
commons-pool-1.5.4.jar
dom4j-1.6.1.jar
ezmorph-1.0.6.jar
freemarker-2.3.19.jar
hamcrest-core-1.3.jar
hibernate-commons-annotations-4.0.5.Final.jar
hibernate-core-4.3.6.Final.jar
hibernate-jpa-2.1-api-1.0.0.Final.jar
jackson-core-asl-1.9.10.jar
jackson-mapper-asl-1.9.10.jar
jandex-1.1.0.Final.jar
javassist-3.12.1.GA.jar
javassist-3.18.1-GA.jar
jboss-logging-3.1.3.GA.jar
jboss-logging-annotations-1.2.0.Beta1.jar
jboss-transaction-api_1.2_spec-1.0.0.Final.jar
json-lib-2.4-jdk15.jar
junit-4.11.jar
log4j-api-2.0.2.jar
log4j-core-2.0.2.jar
log4j-web-2.0.2.jar
mybatis-3.2.8.jar
mybatis-paginator-1.2.15.jar
mybatis-spring-1.2.2.jar
ognl-3.0.6.jar
ojdbc6-11.2.0.3.jar
slf4j-api-1.7.7.jar
spring-aop-4.1.1.RELEASE.jar
spring-beans-4.1.1.RELEASE.jar
spring-context-4.1.1.RELEASE.jar
spring-context-support-4.1.1.RELEASE.jar
spring-core-4.1.1.RELEASE.jar
spring-expression-4.1.1.RELEASE.jar
spring-jdbc-4.1.1.RELEASE.jar
spring-orm-4.1.1.RELEASE.jar
spring-tx-4.1.1.RELEASE.jar
spring-web-4.1.1.RELEASE.jar
struts2-config-browser-plugin-2.3.16.jar
struts2-convention-plugin-2.3.16.jar
struts2-core-2.3.16.3.jar
struts2-rest-plugin-2.3.16.jar
struts2-spring-plugin-2.3.16.3.jar
xmlpull-1.1.3.1.jar
xpp3_min-1.1.4c.jar
xstream-1.4.3.jar
xwork-core-2.3.16.3.jar
三、Spring配置（关键）
<?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:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx" xmlns:jdbc="http://www.springframework.org/schema/jdbc"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.0.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd"
default-autowire="byName"> <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
destroy-method="close">
<property name="driverClassName" value="oracle.jdbc.driver.OracleDriver" />
<property name="url" value="jdbc:oracle:thin:@172.21.129.**:1521:orcl" />
<property name="username" value="***" />
<property name="password" value="***" />
<property name="defaultAutoCommit" value="false" />
<property name="initialSize" value="2" />
<property name="maxActive" value="10" />
<property name="maxWait" value="60000" />
</bean> <bean id="sessionFactory"
class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="packagesToScan">
<list>
<value>com.cnblogs.yjmyzz.entity</value>
</list>
</property>
<property name="mappingLocations">
<list>
<value>classpath*:hibernate/**/*.hbm.xml</value>
</list>
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.Oracle10gDialect</prop>
<!-- <prop key="current_session_context_class">thread</prop> -->
<prop key="hibernate.format_sql">false</prop>
<prop key="hibernate.show_sql">true</prop>
<prop key="hibernate.use_sql_comments">true</prop>
<prop key="hibernate.max_fetch_depth">3</prop>
<prop key="hibernate.jdbc.batch_size">20</prop>
<prop key="hibernate.jdbc.fetch_size">20</prop>
<prop key="hibernate.cache.use_second_level_cache">false</prop>
</props>
</property>
</bean> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="configLocation" value="classpath:mybatis-config.xml"></property>
<property name="typeAliasesPackage" value="com.cnblogs.yjmyzz.entity"></property>
<property name="mapperLocations" value="classpath:mybatis/**/*.xml"></property>
<property name="plugins">
<list>
<bean
class="com.github.miemiedev.mybatis.paginator.OffsetLimitInterceptor">
<property name="dialectClass"
value="com.github.miemiedev.mybatis.paginator.dialect.OracleDialect"></property>
</bean>
</list>
</property>
</bean> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.cnblogs.yjmyzz.mybatis.mapper" />
</bean> <bean id="transactionManager"
class="org.springframework.orm.hibernate4.HibernateTransactionManager">
<property name="sessionFactory">
<ref local="sessionFactory" />
</property>
</bean> <tx:advice id="txAdvice" transaction-manager="transactionManager">
<tx:attributes>
<tx:method name="do*" read-only="false" rollback-for="java.lang.Exception" />
<tx:method name="*" propagation="SUPPORTS" read-only="true" />
</tx:attributes>
</tx:advice> <aop:config>
<aop:pointcut id="pc"
expression="execution(* com.cnblogs.yjmyzz.service.*.*(..))" />
<aop:advisor pointcut-ref="pc" advice-ref="txAdvice" />
</aop:config> </beans>
有几个关键点：
a) mybatis与hibernate的sessionFactory，共用同一个dataSource
b) 事务管理共用hibernate的事务管理
四、web.xml配置
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" 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_2_5.xsd"> <display-name>struts2-app-sample</display-name> <listener>
<listener-class>org.apache.logging.log4j.web.Log4jServletContextListener</listener-class>
</listener>
<filter>
<filter-name>log4jServletFilter</filter-name>
<filter-class>org.apache.logging.log4j.web.Log4jServletFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>log4jServletFilter</filter-name>
<url-pattern>/*</url-pattern>
<dispatcher>REQUEST</dispatcher>
<dispatcher>FORWARD</dispatcher>
<dispatcher>INCLUDE</dispatcher>
<dispatcher>ERROR</dispatcher>
</filter-mapping> <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> <filter>
<filter-name>struts2</filter-name>
<filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
<init-param>
<param-name>loggerFactory</param-name>
<param-value>com.opensymphony.xwork2.util.logging.slf4j.Slf4jLoggerFactory</param-value>
</init-param>
</filter> <filter>
<filter-name>openSessionInViewFilter</filter-name>
<filter-class>org.springframework.orm.hibernate4.support.OpenSessionInViewFilter</filter-class>
<init-param>
<param-name>singleSession</param-name>
<param-value>true</param-value>
</init-param>
</filter> <filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping> <welcome-file-list>
<welcome-file>index.html</welcome-file>
</welcome-file-list> </web-app>
五、代码调用
5.1 服务层基类
package com.cnblogs.yjmyzz.service.support; import java.io.Serializable; import javax.annotation.Resource; import org.apache.ibatis.session.SqlSessionFactory;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.StatelessSession; public class BaseServiceImpl implements Serializable { private static final long serialVersionUID = -33988360094493502L; /**
* hibernate入口
*/
@Resource(name = "sessionFactory")
protected SessionFactory hibernateSessionFactory; /**
* mybatis入口
*/
@Resource(name = "sqlSessionFactory")
protected SqlSessionFactory mybatisSessionFactory; protected Session openSession() {
return hibernateSessionFactory.openSession();
} protected StatelessSession openStatelessSession() {
return hibernateSessionFactory.openStatelessSession();
} protected Session getCurrentSession() {
return hibernateSessionFactory.getCurrentSession();
} }
其它各业务服务实现类，都继承自它。当然，也可以弄一个BaseDAO，对hibernate做些封装
package com.cnblogs.yjmyzz.dao; import java.io.Serializable;
import java.util.List; /**
* 基础数据库操作类
*
* @author ss
*
*/
public interface BaseDAO<T> { /**
* 保存一个对象
*
* @param o
* @return
*/
public Serializable save(T o); /**
* 删除一个对象
*
* @param o
*/
public void delete(T o); /**
* 更新一个对象
*
* @param o
*/
public void update(T o); /**
* 保存或更新对象
*
* @param o
*/
public void saveOrUpdate(T o); /**
* 查询
*
* @param hql
* @return
*/
public List<T> find(String hql); /**
* 查询集合
*
* @param hql
* @param param
* @return
*/
public List<T> find(String hql, Object[] param); /**
* 查询集合
*
* @param hql
* @param param
* @return
*/
public List<T> find(String hql, List<Object> param); /**
* 查询集合(带分页)
*
* @param hql
* @param param
* @param page
* 查询第几页
* @param rows
* 每页显示几条记录
* @return
*/
public List<T> find(String hql, Object[] param, Integer page, Integer rows); /**
* 查询集合(带分页)
*
* @param hql
* @param param
* @param page
* @param rows
* @return
*/
public List<T> find(String hql, List<Object> param, Integer page,
Integer rows); /**
* 获得一个对象
*
* @param c
* 对象类型
* @param id
* @return Object
*/
public T get(Class<T> c, Serializable id); /**
* 获得一个对象
*
* @param hql
* @param param
* @return Object
*/
public T get(String hql, Object[] param); /**
* 获得一个对象
*
* @param hql
* @param param
* @return
*/
public T get(String hql, List<Object> param); /**
* select count(*) from 类
*
* @param hql
* @return
*/
public Long count(String hql); /**
* select count(*) from 类
*
* @param hql
* @param param
* @return
*/
public Long count(String hql, Object[] param); /**
* select count(*) from 类
*
* @param hql
* @param param
* @return
*/
public Long count(String hql, List<Object> param); /**
* 执行HQL语句
*
* @param hql
* @return 响应数目
*/
public Integer executeHql(String hql); /**
* 执行HQL语句
*
* @param hql
* @param param
* @return 响应数目
*/
public Integer executeHql(String hql, Object[] param); /**
* 执行HQL语句
*
* @param hql
* @param param
* @return
*/
public Integer executeHql(String hql, List<Object> param); }
package com.cnblogs.yjmyzz.dao.impl; import com.cnblogs.yjmyzz.dao.BaseDAO; import java.io.Serializable;
import java.util.List; import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Repository; @Component("baseDAO")
@SuppressWarnings("all")
public class BaseDAOImpl<T> implements BaseDAO<T> { private SessionFactory sessionFactory; public SessionFactory getSessionFactory() {
return sessionFactory;
} @Autowired
public void setSessionFactory(SessionFactory sessionFactory) {
this.sessionFactory = sessionFactory;
} private Session getCurrentSession() {
return sessionFactory.getCurrentSession();
} public Serializable save(T o) {
return this.getCurrentSession().save(o);
} public void delete(T o) {
this.getCurrentSession().delete(o);
} public void update(T o) {
this.getCurrentSession().update(o);
} public void saveOrUpdate(T o) {
this.getCurrentSession().saveOrUpdate(o);
} public List<T> find(String hql) {
return this.getCurrentSession().createQuery(hql).list();
} public List<T> find(String hql, Object[] param) {
Query q = this.getCurrentSession().createQuery(hql);
if (param != null && param.length > 0) {
for (int i = 0; i < param.length; i++) {
q.setParameter(i, param[i]);
}
}
return q.list();
} public List<T> find(String hql, List<Object> param) {
Query q = this.getCurrentSession().createQuery(hql);
if (param != null && param.size() > 0) {
for (int i = 0; i < param.size(); i++) {
q.setParameter(i, param.get(i));
}
}
return q.list();
} public List<T> find(String hql, Object[] param, Integer page, Integer rows) {
if (page == null || page < 1) {
page = 1;
}
if (rows == null || rows < 1) {
rows = 10;
}
Query q = this.getCurrentSession().createQuery(hql);
if (param != null && param.length > 0) {
for (int i = 0; i < param.length; i++) {
q.setParameter(i, param[i]);
}
}
return q.setFirstResult((page - 1) * rows).setMaxResults(rows).list();
} public List<T> find(String hql, List<Object> param, Integer page,
Integer rows) {
if (page == null || page < 1) {
page = 1;
}
if (rows == null || rows < 1) {
rows = 10;
}
Query q = this.getCurrentSession().createQuery(hql);
if (param != null && param.size() > 0) {
for (int i = 0; i < param.size(); i++) {
q.setParameter(i, param.get(i));
}
}
return q.setFirstResult((page - 1) * rows).setMaxResults(rows).list();
} public T get(Class<T> c, Serializable id) {
return (T) this.getCurrentSession().get(c, id);
} public T get(String hql, Object[] param) {
List<T> l = this.find(hql, param);
if (l != null && l.size() > 0) {
return l.get(0);
} else {
return null;
}
} public T get(String hql, List<Object> param) {
List<T> l = this.find(hql, param);
if (l != null && l.size() > 0) {
return l.get(0);
} else {
return null;
}
} public Long count(String hql) {
return (Long) this.getCurrentSession().createQuery(hql).uniqueResult();
} public Long count(String hql, Object[] param) {
Query q = this.getCurrentSession().createQuery(hql);
if (param != null && param.length > 0) {
for (int i = 0; i < param.length; i++) {
q.setParameter(i, param[i]);
}
}
return (Long) q.uniqueResult();
} public Long count(String hql, List<Object> param) {
Query q = this.getCurrentSession().createQuery(hql);
if (param != null && param.size() > 0) {
for (int i = 0; i < param.size(); i++) {
q.setParameter(i, param.get(i));
}
}
return (Long) q.uniqueResult();
} public Integer executeHql(String hql) {
return this.getCurrentSession().createQuery(hql).executeUpdate();
} public Integer executeHql(String hql, Object[] param) {
Query q = this.getCurrentSession().createQuery(hql);
if (param != null && param.length > 0) {
for (int i = 0; i < param.length; i++) {
q.setParameter(i, param[i]);
}
}
return q.executeUpdate();
} public Integer executeHql(String hql, List<Object> param) {
Query q = this.getCurrentSession().createQuery(hql);
if (param != null && param.size() > 0) {
for (int i = 0; i < param.size(); i++) {
q.setParameter(i, param.get(i));
}
}
return q.executeUpdate();
} }
至于mybatis，就没必要封装了，因为各xxxMapper接口，注入后可以直接拿来调
5.2 调用示例
package com.cnblogs.yjmyzz.service.support; import java.math.BigDecimal;
import java.util.*; import javax.annotation.Resource; import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service; import com.cnblogs.yjmyzz.convertor.OrderConverter;
import com.cnblogs.yjmyzz.dao.BaseDAO;
import com.cnblogs.yjmyzz.dto.Order;
import com.cnblogs.yjmyzz.entity.TOrder;
import com.cnblogs.yjmyzz.mybatis.mapper.OrderMapper;
import com.cnblogs.yjmyzz.service.OrderService; @Service
public class OrdersServiceImpl extends BaseServiceImpl implements OrderService { @Autowired
OrderMapper orderMapper; @Resource
BaseDAO<TOrder> tOrderDAO; private static final long serialVersionUID = 1513133416493770048L; @Override
public Order get(String id) {
// hibernate实现
// return OrderConverter.toDto((TOrder) getCurrentSession().get(
// TOrder.class, new BigDecimal(Integer.parseInt(id))));
return OrderConverter.toDto(tOrderDAO.get(TOrder.class, new BigDecimal(
Integer.parseInt(id)))); // mybatis实现
// return
// OrderConverter.toDto(orderMapper.getOrder(Integer.parseInt(id)));
} @Override
public List<Order> getAll() {
List<TOrder> entities = orderMapper.getAllOrder();
List<Order> orders = new ArrayList<Order>();
for (TOrder entity : entities) {
orders.add(OrderConverter.toDto(entity));
}
return orders;
} @Override
public void doSave(Order order) {
// hibernate
TOrder entity = OrderConverter.toEntity(order);
if (entity.getId() != null) {
entity = (TOrder) getCurrentSession().get(TOrder.class,
entity.getId()); // update fields
entity.setClientname(order.getClientName());
entity.setAmount(new BigDecimal(order.getAmount()));
}
getCurrentSession().saveOrUpdate(entity);
} @Override
public void doRemove(String id) {
// mybatis
orderMapper.deleteOrder(Integer.parseInt(id)); } }
其它注意事项：
hibernate 4.x以后，entity类上的注解，最好改成@Entity("TABLE_NAME")，而非以前的@Table(xxx)，参考：
@Entity(name = "T_ORDER")
public class TOrder implements java.io.Serializable {
示例代码下载：struts-hibernate-mybatis-rest.zip
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