SSM框架系列文章: SSM框架学习总结第零篇–框架是什么 SSM框架学习总结第一篇–MyBatis SSM框架学习总结第二篇–Spring SSM框架学习总结第三篇–Spring MVC SSM框架学习总结第四篇–SSM框架整合
文章目录
前言一、环境准备1.1 创建数据库与表结构1.2 创建Maven工程1.3 导入坐标并建立依赖1.4 编写实体类1.5 编写业务接口1.6 编写持久层接口
二、整合2.1 保证 Spring 框架在 web 工程中独立运行2.1.1 :编写 spring 配置文件并导入约束2.1.2 使用注解配置业务层和持久层2.1.3 测试 spring 能否独立运行
2.2 保证 SpringMVC 在 web 工程中独立运行2.2.1 在 web.xml 中配置核心控制器(DispatcherServlet)2.2.2 编写 SpringMVC 的配置文件2.2.3 编写 Controller 和 jsp 页面
2.3 整合 Spring 和 SpringMVC2.3.1 配置监听器实现启动服务创建容器
2.4 保证 MyBatis 框架在 web 工程中独立运行2.4.1 编写 AccountDao 映射配置文件2.4.2 编写 SqlMapConfig 配置文件2.4.3 测试运行结果
2.5 整合 Spring 和 MyBatis2.5.1 Spring 接管 MyBatis 的 Session 工厂2.5.2 配置自动扫描所有 Mapper 接口和文件2.5.3 配置 spring 的事务2.5.4 测试整合结果
2.6 测试 SSM 整合结果2.6.1 编写测试 jsp2.6.2 修改控制器中的方法2.6.3 测试结果
总结
前言
提示:以下是本篇文章正文内容
一、环境准备
1.1 创建数据库与表结构
create database ssm
;
create table account
(
id
int primary key auto_increment,
name
varchar(100),
money
double(7,2),
);
1.2 创建Maven工程
创建子模块: ssm_domain jar ssm_dao jar ssm_service jar ssm_web war
1.3 导入坐标并建立依赖
注意 MyBatis 和 Spring 的版本对应关系:
<?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>cn.itcast
</groupId>
<artifactId>ssm
</artifactId>
<version>1.0-SNAPSHOT
</version>
<packaging>war
</packaging>
<name>ssm Maven Webapp
</name>
<url>http://www.example.com
</url>
<properties>
<project.build.sourceEncoding>UTF-8
</project.build.sourceEncoding>
<maven.compiler.source>1.8
</maven.compiler.source>
<maven.compiler.target>1.8
</maven.compiler.target>
<spring.version>5.0.2.RELEASE
</spring.version>
<slf4j.version>1.6.6
</slf4j.version>
<log4j.version>1.2.12
</log4j.version>
<mysql.version>5.1.6
</mysql.version>
<mybatis.version>3.4.5
</mybatis.version>
</properties>
<dependencies>
<dependency>
<groupId>org.aspectj
</groupId>
<artifactId>aspectjweaver
</artifactId>
<version>1.6.8
</version>
</dependency>
<dependency>
<groupId>org.springframework
</groupId>
<artifactId>spring-aop
</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-web
</artifactId>
<version>${spring.version}
</version>
</dependency>
<dependency>
<groupId>org.springframework
</groupId>
<artifactId>spring-webmvc
</artifactId>
<version>${spring.version}
</version>
</dependency>
<dependency>
<groupId>org.springframework
</groupId>
<artifactId>spring-test
</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-jdbc
</artifactId>
<version>${spring.version}
</version>
</dependency>
<dependency>
<groupId>junit
</groupId>
<artifactId>junit
</artifactId>
<version>4.12
</version>
<scope>compile
</scope>
</dependency>
<dependency>
<groupId>mysql
</groupId>
<artifactId>mysql-connector-java
</artifactId>
<version>${mysql.version}
</version>
</dependency>
<dependency>
<groupId>javax.servlet
</groupId>
<artifactId>servlet-api
</artifactId>
<version>2.5
</version>
<scope>provided
</scope>
</dependency>
<dependency>
<groupId>javax.servlet.jsp
</groupId>
<artifactId>jsp-api
</artifactId>
<version>2.0
</version>
<scope>provided
</scope>
</dependency>
<dependency>
<groupId>jstl
</groupId>
<artifactId>jstl
</artifactId>
<version>1.2
</version>
</dependency>
<dependency>
<groupId>log4j
</groupId>
<artifactId>log4j
</artifactId>
<version>${log4j.version}
</version>
</dependency>
<dependency>
<groupId>org.slf4j
</groupId>
<artifactId>slf4j-api
</artifactId>
<version>${slf4j.version}
</version>
</dependency>
<dependency>
<groupId>org.slf4j
</groupId>
<artifactId>slf4j-log4j12
</artifactId>
<version>${slf4j.version}
</version>
</dependency>
<dependency>
<groupId>org.mybatis
</groupId>
<artifactId>mybatis
</artifactId>
<version>${mybatis.version}
</version>
</dependency>
<dependency>
<groupId>org.mybatis
</groupId>
<artifactId>mybatis-spring
</artifactId>
<version>1.3.0
</version>
</dependency>
<dependency>
<groupId>c3p0
</groupId>
<artifactId>c3p0
</artifactId>
<version>0.9.1.2
</version>
<type>jar
</type>
<scope>compile
</scope>
</dependency>
</dependencies>
<build>
<finalName>ssm
</finalName>
<pluginManagement>
<plugins>
<plugin>
<artifactId>maven-clean-plugin
</artifactId>
<version>3.0.0
</version>
</plugin>
<plugin>
<artifactId>maven-resources-plugin
</artifactId>
<version>3.0.2
</version>
</plugin>
<plugin>
<artifactId>maven-compiler-plugin
</artifactId>
<version>3.7.0
</version>
</plugin>
<plugin>
<artifactId>maven-surefire-plugin
</artifactId>
<version>2.20.1
</version>
</plugin>
<plugin>
<artifactId>maven-war-plugin
</artifactId>
<version>3.2.0
</version>
</plugin>
<plugin>
<artifactId>maven-install-plugin
</artifactId>
<version>2.5.2
</version>
</plugin>
<plugin>
<artifactId>maven-deploy-plugin
</artifactId>
<version>2.8.2
</version>
</plugin>
</plugins>
</pluginManagement>
</build>
</project>
1.4 编写实体类
public class Account implements Serializable{
private Integer id
;
private String name
;
private Double money
;
public Integer
getId() {
return id
;
}
public void setId(Integer id
) {
this.id
= id
;
}
public String
getName() {
return name
;
}
public void setName(String name
) {
this.name
= name
;
}
public Double
getMoney() {
return money
;
}
public void setMoney(Double money
) {
this.money
= money
;
}
@Override
public String
toString() {
return "Account{" +
"id=" + id
+
", name='" + name
+ '\'' +
", money=" + money
+
'}';
}
}
1.5 编写业务接口
public interface AccountService {
public List
<Account> findAll();
public void saveAccount(Account account
);
}
1.6 编写持久层接口
public interface IAccountDao {
void save(Account account
);
List
<Account> findAll();
}
二、整合
2.1 保证 Spring 框架在 web 工程中独立运行
2.1.1 :编写 spring 配置文件并导入约束
<?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:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.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">
<context:component-scan base-package="com.itheima">
<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller" />
</context:component-scan>
</beans>
2.1.2 使用注解配置业务层和持久层
@Service("accountService")
public class AccountServiceImpl implements IAccountService {
@Autowired
private IAccountDao accountDao
;
@Override
public List
<Account> findAllAccount() {
return accountDao
.findAllAccount();
}
@Override
public void saveAccount(Account account
) {
accountDao
.saveAccount
}
}
@Repository("accountDao")
public class AccountDaoImpl implements IAccountDao {
@Override
public List
<Account> findAllAccount() {
System
.out
.println("查询了所有账户");
return null
;
}
@Override
public void saveAccount(Account account
) {
System
.out
.println("保存了账户");
}
}
2.1.3 测试 spring 能否独立运行
public class Test01Spring {
public static void main(String
[] args
) {
ApplicationContext ac
= new ClassPathXmlApplicationContext("applicationContext.xml");
IAccountService as
= ac
.getBean("accountService",IAccountService
.class);
as
.findAllAccount();
}
}
结果:
2.2 保证 SpringMVC 在 web 工程中独立运行
2.2.1 在 web.xml 中配置核心控制器(DispatcherServlet)
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
version="2.5">
<display-name>ssm_web
</display-name>
<servlet>
<servlet-name>springmvcDispatcherServlet
</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet
</servlet-class>
<init-param>
<param-name>contextConfigLocation
</param-name>
<param-value>classpath:springmvc.xml
</param-value>
</init-param>
<load-on-startup>1
</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>springmvcDispatcherServlet
</servlet-name> <url-pattern>/
</url-pattern>
</servlet-mapping>
<filter>
<filter-name>CharacterEncodingFilter
</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter
</filter-cla
ss>
<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>CharacterEncodingFilter
</filter-name>
<url-pattern>/*
</url-pattern>
</filter-mapping>
<welcome-file-list>
<welcome-file>index.html
</welcome-file>
<welcome-file>index.htm
</welcome-file>
<welcome-file>index.jsp
</welcome-file>
<welcome-file>default.html
</welcome-file>
<welcome-file>default.htm
</welcome-file>
<welcome-file>default.jsp
</welcome-file>
</welcome-file-list>
</web-app>
2.2.2 编写 SpringMVC 的配置文件
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd">
<context:component-scan base-package="cn.itcast">
<context:include-filter type="annotation" expression="org.springframework.stereotype.Controller" />
</context:component-scan>
<bean id="internalResourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/pages/"/>
<property name="suffix" value=".jsp"/>
</bean>
<mvc:annotation-driven/>
</beans>
2.2.3 编写 Controller 和 jsp 页面
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>主页
</title>
</head>
<body>
<a href="account/findAllAccount">访问查询账户
</a>
</body>
</html>
@Controller("accountController")
@RequestMapping("/account")
public class AccountController {
@RequestMapping("/findAllAccount")
public String
findAllAccount() {
System
.out
.println("执行了查询账户");
return "success";
}
}
结果:
2.3 整合 Spring 和 SpringMVC
2.3.1 配置监听器实现启动服务创建容器
<listener>
<listener-class>
org.springframework.web.context.ContextLoaderListener
</listener-class>
</listener>
<context-param>
<param-name>contextConfigLocation
</param-name>
<param-value>classpath:applicationContext.xml
</param-value>
</context-param>
2.4 保证 MyBatis 框架在 web 工程中独立运行
2.4.1 编写 AccountDao 映射配置文件
注意:我们使用代理 dao 的方式来操作持久层,所以此处 Dao 的实现类就是多余的了。
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper
PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.itheima.dao.IAccountDao">
<select id="findAll" resultType="com.itheima.domain.Account">
select * from account
</select>
<insert id="save" parameterType="com.itheima.domain.Account">
insert into account(name,money) values(#{name},#{money});
</insert>
</mapper>
2.4.2 编写 SqlMapConfig 配置文件
<?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>
<properties resource
="jdbcConfig.properties"></properties
>
<environments
default="mysql">
<environment id
="mysql">
<transactionManager type
="JDBC"></transactionManager
>
<dataSource type
="pooled">
<property name
="driver" value
="${jdbc.driver}"/>
<property name
="url" value
="${jdbc.url}"/>
<property name
="username" value
="${jdbc.username}"/>
<property name
="password" value
="${jdbc.password}"/>
</dataSource
>
</environment
>
</environments
>
<mappers>
<mapper resource
="com/itheima/dao/AccountDao.xml"/>
</mappers
>
</configuration
>
properties 文件中的内容:
jdbc
.driver
=com
.mysql
.jdbc
.Driver
jdbc
.url
=jdbc
:mysql
://localhost
:3306/ssm
jdbc
.username
=root
jdbc
.password
=1234
2.4.3 测试运行结果
public class TestMyBatis {
@Test
public void run1() throws Exception
{
InputStream in
= Resources
.getResourceAsStream("SqlMapConfig.xml");
SqlSessionFactory factory
= new SqlSessionFactoryBuilder().build(in
);
SqlSession session
= factory
.openSession();
AccountDao dao
= session
.getMapper(AccountDao
.class);
List
<Account> list
= dao
.findAll();
for(Account account
: list
){
System
.out
.println(account
);
}
session
.close();
in
.close();
}
@Test
public void run2() throws Exception
{
Account account
= new Account();
account
.setName("熊大");
account
.setMoney(400d);
InputStream in
= Resources
.getResourceAsStream("SqlMapConfig.xml");
SqlSessionFactory factory
= new SqlSessionFactoryBuilder().build(in
);
SqlSession session
= factory
.openSession();
AccountDao dao
= session
.getMapper(AccountDao
.class);
dao
.saveAccount(account
);
session
.commit();
session
.close();
in
.close();
}
}
2.5 整合 Spring 和 MyBatis
整合思路: 把 mybatis 配置文件(SqlMapConfig.xml)中内容配置到 spring 配置文件中 同时,把 mybatis 配置文件的内容清掉。 注意: 由于我们使用的是代理 Dao 的模式,Dao 具体实现类由 MyBatis 使用代理方式创建,所以此时 mybatis配置文件不能删。 当我们整合 spring 和 mybatis 时,mybatis 创建的 Mapper.xml 文件名必须和 Dao 接口文件名一致
2.5.1 Spring 接管 MyBatis 的 Session 工厂
<context:property-placeholder location="classpath:jdbcConfig.properties" />
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass" value="${jdbc.driver}"></property>
<property name="jdbcUrl" value="${jdbc.url}"></property>
<property name="user" value="${jdbc.username}"></property>
<property name="password" value="${jdbc.password}"></property>
</bean>
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
</bean>
2.5.2 配置自动扫描所有 Mapper 接口和文件
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.itheima.dao"/>
</bean>
2.5.3 配置 spring 的事务
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource" />
</bean>
<tx:advice id="txAdvice" transaction-manager="transactionManager">
<tx:attributes>
<tx:method name="find*" read-only="true"/>
<tx:method name="*" isolation="DEFAULT"/>
</tx:attributes>
</tx:advice>
<aop:config>
<aop:advisor advice-ref="txAdvice" pointcut="execution(* cn.itcast.service.impl.*ServiceImpl.*(..))"/>
</aop:config>
2.5.4 测试整合结果
@RunWith(SpringJUnit4ClassRunner
.class)
@ContextConfiguration(locations
= {"classpath:applicationContext.xml"})
public class Test03SpringMabatis {
@Autowired
private IAccountService accountService
;
@Test
public void testFindAll() {
List list
= accountService
.findAllAccount();
System
.out
.println(list
);
}
@Test
public void testSave() {
Account account
= new Account();
account
.setName("测试账号");
account
.setMoney(1234f);
accountService
.saveAccount(account
);
}
}
2.6 测试 SSM 整合结果
2.6.1 编写测试 jsp
请求发起页面:
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>主页
</title>
</head>
<body>
<a href="account/findAllAccount">访问查询账户
</a>
<hr/>
<form action="account/saveAccount" method="post">
账户名称:
<input type="text" name="name"/><br/>
账户金额:
<input type="text" name="money"><br/>
<input type="submit" value="保存"/>
</form>
</body>
</html>
响应结果页面:
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>账户的列表页面
</title>
</head>
<body>
<table border="1" width="300px">
<tr>
<th>编号
</th>
<th>账户名称
</th> <
th>账户金额
</th>
</tr>
<c:forEach items="${accounts}" var="account" varStatus="vs">
<tr>
<td>${vs.count}
</td>
<td>${account.name }
</td>
<td>${account.money }
</td>
</tr>
</c:forEach>
</table>
</body>
</html>
2.6.2 修改控制器中的方法
@Controller("accountController")
@RequestMapping("/account")
public class AccountController {
@Autowired
private IAccountService accountService
;
@RequestMapping("/findAllAccount")
public ModelAndView
findAllAccount() {
List
<Account> accounts
= accountService
.findAllAccount();
ModelAndView mv
= new ModelAndView();
mv
.addObject("accounts", accounts
);
mv
.setViewName("accountlist");
return mv
;
}
@RequestMapping("/saveAccount")
public String
saveAccount(Account account
) {
accountService
.saveAccount(account
);
return "redirect:findAllAccount";
}
}
2.6.3 测试结果
总结
这里对文章进行总结:本文对前三篇的学习进行了一个整合,将Spring,MyBatis,Spring MVC三个框架进行了整合。整合过程设计到了各部分代码的编写与测试。 SSM框架学习总结到这也算告一段落了,希望大家继续努力,最后拿到满意的offer!
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