一、基本环境搭建
1、新建一个Maven项目，不使用模板
2、在pom.xml文件中设置打包格式为war
<packaging>war</packaging>
3、在Project Structure -> Modules中设置webapp目录以及web.xml文件位置
4、导入相关的依赖
<dependencies> <!-- junit --> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.12</version> </dependency> <!-- 数据库驱动 --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.47</version> </dependency> <!-- 数据库连接池 --> <dependency> <groupId>com.mchange</groupId> <artifactId>c3p0</artifactId> <version>0.9.5.2</version> </dependency> <!-- Servlet - jsp --> <dependency> <groupId>javax.servlet</groupId> <artifactId>servlet-api</artifactId> <version>2.5</version> </dependency> <dependency> <groupId>javax.servlet.jsp</groupId> <artifactId>jsp-api</artifactId> <version>2.2</version> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>jstl</artifactId> <version>1.2</version> </dependency> <!-- MyBatis --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>3.5.2</version> </dependency> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version>2.0.2</version> </dependency> <!-- Spring --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>5.1.9.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> <version>5.1.9.RELEASE</version> </dependency> </dependencies>
5、在pom.xml中设置过滤器，使静态资源可以导出
<build> <resources> <resource> <directory>src/main/java</directory> <includes> <include>**/*.properties</include> <include>**/*.xml</include> </includes> <filtering>false</filtering> </resource> <resource> <directory>src/main/resources</directory> <includes> <include>**/*.properties</include> <include>**/*.xml</include> </includes> <filtering>false</filtering> </resource> </resources> </build>
6、在Edit Configuration中配置Tomcat【关注尚硅谷，轻松学IT】
7、建立基本结构和框架配置
- mybatis-config.xml MyBatis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-3config.dtd"> <configuration> <!-- 配置数据源，交给Spring去做 --> <!-- 给包起别名 --> <typeAliases> <package name="com.banmao.pojo"/> </typeAliases> <mappers> <mapper resource="com/wzy/dao/BooksMapper.xml"/> </mappers> </configuration>
- applicationContext.xml Spring总配置文件
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" 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"> <import resource="spring-dao.xml"/> <import resource="spring-service.xml"/> <import resource="spring-mvc.xml"/> </beans>
二、整合MyBatis
1、数据库配置文件：database.properties
jdbc.driver=com.mysql.jdbc.Driver # 如果使用的是MySQL8.0+ 增加一个时区的配置：&serverTimezone=Asia/Shanghai jdbc.url=jdbc:mysql://localhost:3306/ssmbuild?useSSL=true&useUnicode=true&characterEncoding=utf8 jdbc.username=root jdbc.password=root
2、pojo包下：Books实体类
public class Books {
private Integer bookID;
private String bookName;
private Integer bookCounts;
private String detail;
// getter & setter 方法
// toString方法
}
3、dao包下：BookMapper接口
public interface BookMapper {
// 增加一本书
int addBook(Books books);
// 删除一本书
int deleteBookById(int id);
// 更新一本书
int updateBook(Books books);
// 查询一本书
Books queryBookById(int id);
// 查询所有书
List<Books> queryAllBooks();
}
4、dao包下：BookMapper.xml
<?xml version="1.0" encoding="utf-8" ?>
<!DOCTYPE mapper PUBLIC="-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.wzy.dao.BookMapper">
<insert id="addBook" parameterType="Books">
insert into books (bookName, bookCounts, detail)
values (#{bookName}, #{bookCounts}, #{detail})
</insert>
<delete id="deleteBookById" parameterType="int">
delete from books where bookID = #{id}
</delete>
</mapper>
5、service包下：BookService接口
public interface BookService {
// 增加一本书
int addBook(Books books);
// 删除一本书
int deleteBookById(int id);
// 更新一本书
int updateBook(Books books);
// 查询一本书
Books queryBookById(int id);
// 查询所有书
List<Books> queryAllBooks();
}
6、service包下：BookServiceImpl实现类
public class BookServiceImpl implements BookService {
// service层调dao层：组合DAO
private BookMapper bookMapper;
public void setBookMapper(BookMapper bookMapper) {
this.bookMapper = bookMapper;
}
public int addBook(Books books) {
return bookMapper.addBook(books);
}
public int deleteBookById(int id) {
return bookMapper.deleteBookById(id);
}
public int updateBook(Books boooks) {
return bookMapper.updateBook(books);
}
public Books queryBookById(int id) {
return bookMapper.queryBookById(id);
}
public List<Books> queryAllBooks() {
return bookMapper.queryAllBooks();
}
}
三、整合Spring
此处非常重点，建议背诵（开玩笑，直接复制就行了
1、配置Spring整合MyBatis，数据源使用c3p0连接池
2、编写Spring整合Mybatis的相关配置文件：spring-dao.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: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/context https://www.springframework.org/schema/context/spring-context.xsd">
<!-- 1.关联数据库配置文件 -->
<context:property-placeholder location="classpath:database.properties"/>
<!-- 2.连接池 -->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass" value="${jdbc.driver}"/>
<property name="jdbcUrl" value="${jdbc.url}"/>
<property name="user" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
<!-- c3p0连接池的私有属性 -->
<property name="maxPoolSize" value="30"/>
<property name="minPoolSize" value="10"/>
<!-- 关闭连接后不自动commit -->
<property name="autoCommitOnClose" value="false"/>
<!-- 获取连接超时时间 -->
<property name="checkoutTimeout" value="10000"/>
<!-- 当获取连接失败重试次数 -->
<property name="acquireRetryAttempts" value="2"/>
</bean>
<!-- 3.sqlSessionFactory -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<!-- 注入数据库连接池 -->
<property name="dataSource" ref="dataSource"/>
<!-- 配置MyBatis全局配置文件 mybatis-cinfig.xml -->
<property name="configLocation" value="classpath:mybatis-config.xml"/>
</bean>
<!-- 4.配置扫描Dao接口包，动态实现Dao接口注入到spring容器中 -->
<!-- 解释：http://www.cnblog.com/jpfss/7799806.html-->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!-- 注入sqlSessionFactory -->
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
<!-- 要扫描的dao包 -->
<property name="basePackage" value="com.banmao.dao"/>
</bean>
</beans>
3、Spring整合service层
<?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" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd"> <!-- 1.扫描service下的包 --> <context:component-scan base-package="com.banmao.service"/> <!-- 2.将我们的所有业务类，注入到Spring，可以通过配置，或者注解实现 --> <bean id="BookServiceImpl" class="com.banmao.service.impl.BookServiceImpl"> <property name="bookMapper" ref="bookMapper"/> </bean> <!-- 3.声明式事务配置 --> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <!-- 注入数据源 --> <property name="dataSource" ref="dataSource"/> </bean> <!-- 4.aop事务支持！--> </beans>
Spring就是个大杂烩！！！！
四、整合Spring MVC
1、web.xml
<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd" version="4.0"> <!-- DispatchServlet --> <servlet> <servlet-name>springmvc</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:applicationContext.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>springmvc</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> <!-- 乱码过滤 --> <filter> <filter-name>encodingFilter</filter-name> <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class> <init-param> <param-name>encoding</param-name> <param-value>utf-8</param-value> </init-param> </filter> <filter-mapping> <filter-name>encodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <!-- Session过期时间 --> <session-config> <session-timeout>15</session-timeout> </session-config> </web-app>
2、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:mvc="http://www.springframework.org/schema/mvc" 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/mvc https://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd"> <!-- 1.注解驱动 --> <mvc:annotation-driven/> <!-- 2.静态资源过滤 --> <mvc:default-servlet-handler/> <!-- 3.扫描包：controller --> <context:component-scan base-package="com.banmao.controller"/> <!-- 4.视图解析器 --> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/jsp/"/> <property name="suffix" value=".jsp"/> </bean> </beans>
3、Spring配置整合文件：applicationContext.xml
import导入即可
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" 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"> <import resource="spring-dao.xml"/> <import resource="spring-service.xml"/> <import resource="spring-mvc.xml"/> </beans>
五、整合Controller层和视图层
以下内容为前后端不分离，返回的数据直接显示在JSP页面上
1、BookController类编写，方法一：查询所有书籍
@Controller
@RequestMapping("/book")
public class BookController {
@Autowired
@Qualifier("BookServiceImpl")
private BookService bookService;
@RequestMapping("/allBooks")
public String list(Model model) {
List<Books> list = bookService.queryAllBooks();
model.addAttribute("list", list);
return "allBooks";
}
}
2、编写首页JSP：index.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %>
<!DOCTYPE HTML>
<html>
<head>
<title>首页</title>
</head>
<body>
<h3>
<a href="${pageContext.request.contextPath}/book/allBook">点击进入列表页</a>
</h3>
</body>
</html>
3、书籍列表页面：allBooks.jsp
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>书籍列表</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
</head>
<body>
<div>
<div>
<table>
<thead>
<tr>
<th>书籍编号</th>
<th>书籍名字</th>
<th>书籍数量</th>
<th>书籍详情</th>
<th>操作</th>
</tr>
</thead>
<tbody>
<c:forEach var="book" items="${requestScope.get('list')}">
<tr>
<td>${book.getBookID()}</td>
<td>${book.getBookName()}</td>
<td>${book.getBookCounts()}</td>
<td>${book.getDetail()}</td>
<td>
<a href="${pageContext.request.contextPath}/book/toUpdateBook?id=${book.getBookID()}">更改</a> |
<a href="${pageContext.request.contextPath}/book/del/${book.getBookID()}">删除</a>
</td>
</tr>
</c:forEach>
</tbody>
</table>
</div>
</div>
</div>
其余方法可自己实现，不再赘述！
六、总结
实际上，Spring的配置整合能够托管许多东西，其中涵盖了MyBatis的数据源配置、Filter的乱码问题解决配置等等，这些都是机械化的配置操作，并不需要太多改变就可以复用。
因此可以将所有配置包装成模板，每次生成SSM框架项目时都可以直接使用。
但是！一定要学会Spring的理念和其与Mybatis以及Service、MVC整合的过程！
来自 “ ITPUB博客 ” ，链接：https://blog.itpub.net/70010293/viewspace-2850714/ ，如需转载，请注明出处，否则将追究法律责任。
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