JAVA框架 Spring 和Mybatis整合（传统dao）

一：我们使用spring处理service，mybaits处理dao层。

二：导入jar包

pom.xml文件内容：

  1 <?xml version="1.0" encoding="UTF-8"?>
  2 
  3 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  4   xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  5   <modelVersion>4.0.0</modelVersion>
  6 
  7   <groupId>jd.com</groupId>
  8   <artifactId>AddSpringAndMy</artifactId>
  9   <version>1.0-SNAPSHOT</version>
 10   <packaging>war</packaging>
 11 
 12   <name>AddSpringAndMy Maven Webapp</name>
 13   <!-- FIXME change it to the project's website -->
 14   <url>http://www.example.com</url>
 15 
 16   <properties>
 17     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 18     <maven.compiler.source>1.8</maven.compiler.source>
 19     <maven.compiler.target>1.8</maven.compiler.target>
 20   </properties>
 21   <dependencies>
 22     <dependency>
 23       <groupId>org.hamcrest</groupId>
 24       <artifactId>hamcrest-library</artifactId>
 25       <version>1.3</version>
 26     </dependency>
 27     <dependency>
 28       <groupId>org.slf4j</groupId>
 29       <artifactId>slf4j-log4j12</artifactId>
 30       <version>1.7.5</version>
 31     </dependency>
 32     <dependency>
 33       <groupId>org.slf4j</groupId>
 34       <artifactId>slf4j-api</artifactId>
 35       <version>1.7.5</version>
 36     </dependency>
 37     <dependency>
 38       <groupId>org.apache.logging.log4j</groupId>
 39       <artifactId>log4j-core</artifactId>
 40       <version>2.0.2</version>
 41     </dependency>
 42     <dependency>
 43       <groupId>org.apache.logging.log4j</groupId>
 44       <artifactId>log4j-api</artifactId>
 45       <version>2.0.2</version>
 46     </dependency>
 47     <dependency>
 48       <groupId>spring-jms</groupId>
 49       <artifactId>spring-jms</artifactId>
 50       <version>4.2.4</version>
 51     </dependency>
 52     <dependency>
 53       <groupId>org.springframework</groupId>
 54       <artifactId>spring-web</artifactId>
 55       <version>4.3.12.RELEASE</version>
 56     </dependency>
 57     <dependency>
 58       <groupId>mysql</groupId>
 59       <artifactId>mysql-connector-java</artifactId>
 60       <version>5.1.34</version>
 61     </dependency>
 62     <dependency>
 63       <groupId>org.springframework</groupId>
 64       <artifactId>spring-oxm</artifactId>
 65       <version>4.1.5.RELEASE</version>
 66     </dependency>
 67     <dependency>
 68       <groupId>org.springframework</groupId>
 69       <artifactId>spring-test</artifactId>
 70       <version>4.1.5.RELEASE</version>
 71     </dependency>
 72     <dependency>
 73       <groupId>org.springframework</groupId>
 74       <artifactId>spring-expression</artifactId>
 75       <version>4.3.12.RELEASE</version>
 76     </dependency>
 77     <dependency>
 78       <groupId>org.springframework</groupId>
 79       <artifactId>spring-core</artifactId>
 80       <version>4.3.12.RELEASE</version>
 81     </dependency>
 82     <dependency>
 83       <groupId>org.springframework</groupId>
 84       <artifactId>spring-beans</artifactId>
 85       <version>4.3.12.RELEASE</version>
 86     </dependency>
 87     <dependency>
 88       <groupId>org.springframework</groupId>
 89       <artifactId>spring-context</artifactId>
 90       <version>4.3.12.RELEASE</version>
 91     </dependency>
 92     <dependency>
 93       <groupId>org.springframework</groupId>
 94       <artifactId>spring-aop</artifactId>
 95       <version>4.3.12.RELEASE</version>
 96     </dependency>
 97     <dependency>
 98       <groupId>aopalliance</groupId>
 99       <artifactId>aopalliance</artifactId>
100       <version>1.0</version>
101     </dependency>
102     <dependency>
103       <groupId>spring-aspects</groupId>
104       <artifactId>spring-aspects</artifactId>
105       <version>4.2.4</version>
106     </dependency>
107     <dependency>
108       <groupId>com.springsource.org</groupId>
109       <artifactId>aspectj.weaver</artifactId>
110       <version>1.6.8</version>
111     </dependency>
112 
113     <dependency>
114       <groupId>org.apache.commons</groupId>
115       <artifactId>commons-pool2</artifactId>
116       <version>2.4.1</version>
117     </dependency>
118 
119     <dependency>
120       <groupId>org.apache.commons</groupId>
121       <artifactId>commons-dbcp2</artifactId>
122       <version>2.0.1</version>
123     </dependency>
124     <dependency>
125       <groupId>org.springframework</groupId>
126       <artifactId>spring-jdbc</artifactId>
127       <version>4.1.5.RELEASE</version>
128     </dependency>
129     <dependency>
130       <groupId>log4j</groupId>
131       <artifactId>log4j</artifactId>
132       <version>1.2.17</version>
133     </dependency>
134     <dependency>
135       <groupId>org.javassist</groupId>
136       <artifactId>javassist</artifactId>
137       <version>3.16.1-GA</version>
138     </dependency>
139     <dependency>
140       <groupId>org.mybatis</groupId>
141       <artifactId>mybatis-spring</artifactId>
142       <version>1.2.2</version>
143     </dependency>
144     <dependency>
145       <groupId>org.springframework</groupId>
146       <artifactId>spring-tx</artifactId>
147       <version>4.1.5.RELEASE</version>
148     </dependency>
149     <dependency>
150       <groupId>commons-logging</groupId>
151       <artifactId>commons-logging</artifactId>
152       <version>1.1.1</version>
153     </dependency>
154     <dependency>
155       <groupId>cglib</groupId>
156       <artifactId>cglib</artifactId>
157       <version>2.2.2</version>
158     </dependency>
159     <dependency>
160       <groupId>asm</groupId>
161       <artifactId>asm</artifactId>
162       <version>3.3.1</version>
163     </dependency>
164     <dependency>
165       <groupId>org.mybatis</groupId>
166       <artifactId>mybatis</artifactId>
167       <version>3.2.7</version>
168     </dependency>
169     <dependency>
170       <groupId>junit</groupId>
171       <artifactId>junit</artifactId>
172       <version>4.11</version>
173       <scope>test</scope>
174     </dependency>
175     <dependency>
176       <groupId>org.junit.jupiter</groupId>
177       <artifactId>junit-jupiter-api</artifactId>
178       <version>RELEASE</version>
179     </dependency>
180     <dependency>
181       <groupId>org.springframework</groupId>
182       <artifactId>spring-test</artifactId>
183       <version>4.3.12.RELEASE</version>
184     </dependency>
185     <dependency>
186       <groupId>junit</groupId>
187       <artifactId>junit</artifactId>
188       <version>RELEASE</version>
189     </dependency>
190   </dependencies>
191 
192   <build>
193     <finalName>AddSpringAndMy</finalName>
194     <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
195       <plugins>
196         <plugin>
197           <artifactId>maven-clean-plugin</artifactId>
198           <version>3.0.0</version>
199         </plugin>
200         <!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging -->
201         <plugin>
202           <artifactId>maven-resources-plugin</artifactId>
203           <version>3.0.2</version>
204         </plugin>
205         <plugin>
206           <artifactId>maven-compiler-plugin</artifactId>
207           <version>3.7.0</version>
208         </plugin>
209         <plugin>
210           <artifactId>maven-surefire-plugin</artifactId>
211           <version>2.20.1</version>
212         </plugin>
213         <plugin>
214           <artifactId>maven-war-plugin</artifactId>
215           <version>3.2.0</version>
216         </plugin>
217         <plugin>
218           <artifactId>maven-install-plugin</artifactId>
219           <version>2.5.2</version>
220         </plugin>
221         <plugin>
222           <artifactId>maven-deploy-plugin</artifactId>
223           <version>2.8.2</version>
224         </plugin>
225       </plugins>
226     </pluginManagement>
227   </build>
228 </project>

 注意：

        在引用jar包的话，会出现jar包冲突，注意版本的引用，最好版本号一致。

jar包清单：

三、配置文件整合

1）首先引用properites文件（注意引用外部文件使用classpath引用）

1 <context:property-placeholder location="classpath:db.properites" />

 

2）开启注解扫描和动态代理

1     <context:component-scan base-package="jd.com" />
2     <aop:aspectj-autoproxy />

 

3）我们将DataSource和sqlSessionFactory叫给spring个管理

 1     <!--定义数据库连接池-->
 2     <bean id="basicDataSource" class="org.apache.commons.dbcp2.BasicDataSource" >
 3         <!--支持el表达式-->
 4         <property name="driverClassName" value="${jdbc.driver}"/>
 5         <property name="url" value="${jdbc.url}" />
 6         <property name="username" value="${jdbc.username}" />
 7         <property name="password" value="${jdbc.password}" />
 8         <property name="maxTotal" value="10" />
 9         <property name="maxIdle" value="3" />
10     </bean>

 

 因为SqlSessionFactory是接口，可以使用mybatis-spring的整合的实现类：SqlSessionFactoryBean

 

其中需要在注入DataSource和配置文件的注入。注意需要是用classpath文件引用

1    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
2         <!--依赖DataSource-->
3         <property name="dataSource" ref="basicDataSource"/>
4          <!--加载mybaits的配置文件-->
5         <property name="configLocation" value="classpath:SqlMapConfig.xml" />
6     </bean>

 

 4)注入dao层和service层

1     <bean id="dao" class="jd.com.dao.trDaoImpl">
2         <property name="SqlSessionFactory" ref="sqlSessionFactory"/>
3     </bean>
4     <bean class="jd.com.service.serFindByIdImpl" id="serv">
5         <property name="dao" ref="dao" />
6     </bean>

 

 applicationContext.xml完整配置文件：

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <!--总的约束-->
 3 <beans xmlns="http://www.springframework.org/schema/beans"
 4        xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p"
 5        xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
 6        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 7        xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
 8     http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
 9     http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
10     http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.0.xsd">
11 <!--加载配置文件，定义的properites文件
12     引入外部文件使用classpath关键字。
13 -->
14 
15     <context:component-scan base-package="jd.com" />
16     <aop:aspectj-autoproxy />
17 
18 <context:property-placeholder location="classpath:db.properites" />
19     <!--定义数据库连接池-->
20     <bean id="basicDataSource" class="org.apache.commons.dbcp2.BasicDataSource" >
21         <!--支持el表达式-->
22         <property name="driverClassName" value="${jdbc.driver}"/>
23         <property name="url" value="${jdbc.url}" />
24         <property name="username" value="${jdbc.username}" />
25         <property name="password" value="${jdbc.password}" />
26         <property name="maxTotal" value="10" />
27         <property name="maxIdle" value="3" />
28     </bean>
29     <!--配置mapper
30             其中：org.mybatis.spring.SqlSessionFactoryBean 是SqlSessionFactory的实现类，该类在mybatis-spring.1.2.2.jar里。
31     -->
32     <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
33         <!--依赖DataSource-->
34         <property name="dataSource" ref="basicDataSource"/>
35          <!--加载mybaits的配置文件-->
36         <property name="configLocation" value="classpath:SqlMapConfig.xml" />
37     </bean>
38     <bean id="dao" class="jd.com.dao.trDaoImpl">
39         <property name="SqlSessionFactory" ref="sqlSessionFactory"/>
40     </bean>
41     <bean class="jd.com.service.serFindByIdImpl" id="serv">
42         <property name="dao" ref="dao" />
43     </bean>
44 
45 
46 </beans>

 

其中db.properits是配置数据库配置。

在看下mybatis的配置文件：只是一个子配置文件引入：

 1 <?xml version="1.0" encoding="UTF-8" ?>
 2 <!DOCTYPE configuration
 3         PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
 4         "http://mybatis.org/dtd/mybatis-3-config.dtd">
 5 
 6 
 7 <configuration>
 8     <mappers >
 9         <mapper resource="user.xml" />
10 
11         <!--<mapper class="jd.com.proxydao.AccMapper" />-->
12         <!--<package name="jd.com.proxydao"  />-->
13         <!--<package name="jd.com.vo" />-->
14         <!--<package name="jd.com.vodemo" />-->
15         <!--导入配置文件-->
16         <!--<package name="jd.com" />-->
17     </mappers>
18 </configuration>

 

子配置文件user.xml：

 1 <?xml version="1.0" encoding="UTF-8" ?>
 2 <!DOCTYPE mapper
 3         PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
 4         "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
 5 <!--和主配置文件约束是不一样的-->
 6 <mapper namespace="findById">
 7     <select id="findId" parameterType="int" resultType="jd.com.dao.user" >
 8         SELECT * FROM username WHERE  id=#{id};
 9     </select>
10 </mapper>

 

注意：在不使用mybatis的动态代理的情况下，需要注意 namespace和id不是对应的接口的接口名和方法。

user.class实体类：

 1 package jd.com.dao;
 2 
 3 public class user {
 4     private Integer id;
 5     private String name;
 6     private String sex;
 7 
 8     public void setName(String name) {
 9         this.name = name;
10     }
11 
12     public void setSex(String sex) {
13         this.sex = sex;
14     }
15 
16     public void setId(Integer id) {
17         this.id = id;
18     }
19 
20     public Integer getId() {
21         return id;
22     }
23 
24     public String getName() {
25         return name;
26     }
27 
28     public String getSex() {
29         return sex;
30     }
31 
32     @Override
33     public String toString() {
34         return this.getName()+" "+this.getId()+" "+this.getSex();
35     }
36 }

 

dao层：

接口：

1 package jd.com.dao;
2 
3 public interface trDao {
4      user findUserByName(Integer id);
5 }

 

实现类：注意这个里继承扫起来SqlSessionSupport类。在注入dao层的时候需要注意的引用sqlsessionfactory  所以这之前spring的自己daosupport一样需要引用相应的（DataSource）

 1 package jd.com.dao;
 2 
 3 import org.apache.ibatis.session.SqlSession;
 4 import org.mybatis.spring.support.SqlSessionDaoSupport;
 5 import org.springframework.stereotype.Repository;
 6 
 7 
 8 //需要继承SqlSessionDaoSupport
 9 
10 public class trDaoImpl extends SqlSessionDaoSupport implements trDao {
11 
12 
13     @Override
14     public user findUserByName(Integer id) {
15 //        SqlSessionDaoSupport该类有相应的set方法和get方法 应该类型spring的DaoSupport
16         SqlSession sqlSession=this.getSqlSession();
17 
18         user use=sqlSession.selectOne("findById.findId",id);
19         return use;
20     }
21 }

 

service层：

接口：

1 package jd.com.service;
2 
3 import jd.com.dao.user;
4 
5 
6 public interface trService {
7     user serFindById(Integer id);
8 }

 

实现类：

 1 package jd.com.service;
 2 
 3 import jd.com.dao.trDao;
 4 import jd.com.dao.user;
 5 import org.springframework.stereotype.Service;
 6 
 7 import javax.annotation.Resource;
 8 
 9 
10 @Service(value = "serv")
11 public class serFindByIdImpl implements trService {
12     @Resource(name="dao")
13     private trDao dao;
14 
15     @Override
16     public user serFindById(Integer id) {
17         user use=this.dao.findUserByName(id);
18         return use;
19     }
20 }

 

 

测试类：

 1 package jd.com.testDemo;
 2 
 3 import jd.com.dao.user;
 4 import jd.com.service.serFindByIdImpl;
 5 import org.junit.jupiter.api.Test;
 6 import org.springframework.context.ApplicationContext;
 7 import org.springframework.context.support.ClassPathXmlApplicationContext;
 8 
 9 
10 public class testDemo {
11 
12 //    @Resource(name="sev")
13 //    private serFindByIdImpl serv;
14 
15     @Test
16     public  void test1(){
17         ApplicationContext ap=new ClassPathXmlApplicationContext("applicationContext.xml");
18         serFindByIdImpl serv= (serFindByIdImpl) ap.getBean("serv");
19         System.out.println(222222);
20         user us=serv.serFindById(2);
21         System.out.println(us);
22 
23 
24 
25     }
26 }
27 ;

 

posted @ 2018-04-28 11:04  evil_liu  阅读(1789)  评论(0)  编辑  收藏  举报