![](https://img.haomeiwen.com/i6573910/08f80b5de0cb41ea.png)
下面我们使用idea搭建一个简单的SSM多模块框架,之后在慢慢解说
-
建立项目根目录
第一步
我们首先为项目创建一个根目录,直接next 填上相关内容,GroupId
一般为域名的倒叙写法 ,是项目组织唯一的标识符;ArtifactId
为项目名称,实际对应项目的名称,就是项目根目录的名称
填写项目组织名和项目名 下一步,填写项目工程的名称
填写idea项目名
直接点击finish完成。
建成后的目录如下:目录结构 其中src目录如果不需要可以删除,我们暂时留着
-
创建DAO模块
dao层,即持久层
在根目录ssm上右键,选择new->Module 然后next,建立dao模块 next之后模块名填写dao
填写模块名 直接finish完成dao层的创建 src目录可以先留着。
再以同样的方法创建 service 和 web模块。web模块的创建其实我们也可以用maven中的模版来创建,这里我们为了实验,使用普通方法创建。
最终目录是这样的,其中src目录可以删掉最终目录
![](https://img.haomeiwen.com/i6573910/ad25dc99bac702b9.png)
![](https://img.haomeiwen.com/i6573910/e57227daeb588182.png)
File->Project Structure 中添加war包
![](https://img.haomeiwen.com/i6573910/b6f8435820540e58.png)
------------------------------分割线---------------------
目录都建立好之后,现在我们开始建立依赖,我们向根目录下的pom文件添加依赖
<?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.wcb</groupId>
<artifactId>ssm</artifactId>
<packaging>pom</packaging>
<version>1.0-SNAPSHOT</version>
<modules>
<module>dao</module>
<module>service</module>
<module>web</module>
</modules>
<properties>
<!--定义一些全局变量-->
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<spring.version>4.0.6.RELEASE</spring.version>
<mysql.connector.version>5.1.30</mysql.connector.version>
<mybatis.version>3.2.7</mybatis.version>
<mybatis.spring.version>1.2.2</mybatis.spring.version>
<log4j.version>1.2.12</log4j.version>
<jstl.version>1.2</jstl.version>
<aspectj.version>1.6.12</aspectj.version>
<commons-dbcp.version>1.4</commons-dbcp.version>
</properties>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.7.0</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
</plugins>
</build>
<!--项目依赖-->
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
<!--spring核心包依赖-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${spring.version}</version>
</dependency>
<!--Spring MVC-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${spring.version}</version>
</dependency>
</dependencies>
<!-- Bean注入 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- 包扫描 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- 切面编程 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- 事务管理 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- ORM 框架 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- 加入spring测试依赖包 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- aspectjweaver -->
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>${aspectj.version}</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjrt</artifactId>
<version>${aspectj.version}</version>
</dependency>
<!-- mybatis包 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>${mybatis.version}</version>
</dependency>
<!-- spring mybatis整合包 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>${mybatis.spring.version}</version>
</dependency>
<!-- mysql-connector -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${mysql.connector.version}</version>
</dependency>
<dependency>
<groupId>commons-dbcp</groupId>
<artifactId>commons-dbcp</artifactId>
<version>${commons-dbcp.version}</version>
</dependency>
<!-- jstl -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>${jstl.version}</version>
</dependency>
<!-- servlet api -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
</dependency>
</project>
service模块的xml文件
<?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">
<parent>
<artifactId>ssm</artifactId>
<groupId>com.wcb</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>service</artifactId>
<!--以下为新增内容-->
<packaging>jar</packaging>
<dependencies>
<!--添加对dao层模块的依赖-->
<dependency>
<groupId>com.wcb</groupId>
<artifactId>dao</artifactId>
<version>1.0-SNAPSHOT</version>
</dependency>
<!--单元测试-->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
</dependencies>
</project>
dao模块
<?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">
<parent>
<artifactId>ssm</artifactId>
<groupId>com.wcb</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>dao</artifactId>
<!--以下内容为新增-->
<packaging>jar</packaging>
</project>
web模块
<?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">
<parent>
<artifactId>ssm</artifactId>
<groupId>com.wcb</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>web</artifactId>
<!--以下内容为新增-->
<packaging>war</packaging>
<dependencies>
<!--对dao层的依赖-->
<dependency>
<groupId>com.wcb</groupId>
<artifactId>dao</artifactId>
<version>1.0-SNAPSHOT</version>
</dependency>
<!--对service层的依赖-->
<dependency>
<groupId>com.wcb</groupId>
<artifactId>service</artifactId>
<version>1.0-SNAPSHOT</version>
</dependency>
</dependencies>
</project>
经过上述步骤各种依赖都建立好了,现在开始看dao层文件的编写
到层新建如下文件
![](https://img.haomeiwen.com/i6573910/535033547033b910.png)
UserMapper
是到数据库表的映射接口,pojo
是具体实体类,也可以叫entity; resources
中的mapper是映射接口的xml配置名,mybatis-config.xml是mybatis的配置,所有的额mapper.xml都要依赖这个文件
我们首先增加一个数据库链接
![](https://img.haomeiwen.com/i6573910/6c47c439a569331a.png)
![](https://img.haomeiwen.com/i6573910/3a99f6ef7f854f74.png)
写入如下内容
<?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"
xmlns:aop="http://www.springframework.org/schema/aop"
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-4.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd">
<context:component-scan base-package="com.wcb.service"/>
<!--配置数据源-->
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
destroy-method="close"
p:driverClassName="com.mysql.jdbc.Driver"
p:url="jdbc:mysql://10.26.15.171:3306/rap_db"
p:username="zhanglei61"
p:password="Zl880416"
p:maxActive="20"
p:initialSize="1"
p:maxWait="60000"
p:maxOpenPreparedStatements="20"
p:minIdle="3"
p:removeAbandoned="true"
p:removeAbandonedTimeout="180"
p:connectionProperties="clientEncoding=UTF-8"/>
<!--mybatis的配置文件-->
<bean id="sqlSessionFactory"
class="org.mybatis.spring.SqlSessionFactoryBean"
p:dataSource-ref="dataSource"
p:configLocation="classpath:mybatis-config.xml"
p:mapperLocations="classpath*:mapper/*Mapper.xml"/>
<!-- spring与mybatis整合配置,扫描所有dao 和所有mapper文件 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"
p:basePackage="com.wcb.dao"
p:sqlSessionFactoryBeanName="sqlSessionFactory"/>
<!-- 配置事务管理器 -->
<bean id="transactionManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager"
p:dataSource-ref="dataSource" />
<aop:config proxy-target-class="true">
<aop:pointcut id="serviceMethod"
expression="(execution(* com.wcb.service..*(..))) and (@annotation(org.springframework.transaction.annotation.Transactional))" />
<aop:advisor pointcut-ref="serviceMethod" advice-ref="txAdvice" />
</aop:config>
<tx:advice id="txAdvice" transaction-manager="transactionManager">
<tx:attributes>
<tx:method name="*" />
</tx:attributes>
</tx:advice>
</beans>
创建dao层的pojo实体类User.java
![](https://img.haomeiwen.com/i6573910/1d5e6a06698fc6f8.png)
写入以下代码
package com.wcb.pojo;
/**
* Created by zl on 2019/5/18.
*/
public class User {
private String name;
private String password;
private String account;
private String email;
private String lastLoginDate;
public String getName() {
return name;
}
public String getPassword() {
return password;
}
public void setName(String name) {
this.name = name;
}
public void setPassword(String password) {
this.password = password;
}
public void setAccount(String account) {
this.account = account;
}
public String getAccount() {
return account;
}
public void setLastLoginDate(String lastLoginDate) {
this.lastLoginDate = lastLoginDate;
}
/**
* @return
*/
public String getLastLoginDate() {
return this.lastLoginDate;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
@Override
public String toString() {
return "userName='" + name + '\'' +
", password='" + password + '\'';
}
}
创建接口映射文件xml,
![](https://img.haomeiwen.com/i6573910/f073249fda73c7eb.png)
![](https://img.haomeiwen.com/i6573910/5778f07d766896c7.png)
package com.wcb.dao;
import com.wcb.pojo.User;
import java.util.List;
/**
* Created by zl on 2019/5/18.
*/
public interface UserMapper {
List<User> selectAll();
int insertUser(User user);
}
service模块编写测试文件
![](https://img.haomeiwen.com/i6573910/bfda80dd668e108f.png)
,写入以下内容
package com.wcb.test;
import com.wcb.dao.UserMapper;
import com.wcb.pojo.User;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import java.util.List;
/**
* Created by zl on 2019/5/18.
*/
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("classpath:spring-mybatis.xml")
public class UserTest {
@Autowired
private UserMapper userMapper;
@Test
public void InsertUserTest() {
User user = new User();
user.setAccount("zsdfds@111.com");
user.setName("Test");
user.setPassword("123456");
user.setEmail("zzsfd@183.com");
user.setLastLoginDate("20190101");
userMapper.insertUser(user);
//System.out.println(userMapper.insertUser(user));
}
@Test
public void SelectAllTest() {
List list=userMapper.selectAll();
for(Object user:list){
System.out.println(user.toString());
}
}
@Test
public void testGetName() throws Exception {
}
@Test
public void testGetPassword() throws Exception {
}
@Test
public void testSetName() throws Exception {
}
@Test
public void testSetPassword() throws Exception {
}
@Test
public void testSetAccount() throws Exception {
}
@Test
public void testGetAccount() throws Exception {
}
@Test
public void testSetLastLoginDate() throws Exception {
}
@Test
public void testGetLastLoginDate() throws Exception {
}
}
运行测试文件可以看到插入了新数据
![](https://img.haomeiwen.com/i6573910/9919d8aee50bbe60.png)
![](https://img.haomeiwen.com/i6573910/4d83a118c537059f.png)
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