让我来详细讲解一下“2020最新版SSM框架整合教程”的完整攻略。

1. 准备工作

在整合SSM框架之前，需要安装JDK、Maven以及相应的开发工具，比如IntelliJ IDEA或Eclipse，还需要准备好Web Server，比如Tomcat或Jetty。

2. 创建Maven项目

创建一个Maven Web项目，添加以下依赖：

<dependencies>
    <!--Spring相关依赖-->
    <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-tx</artifactId>
        <version>${spring.version}</version>
    </dependency>

    <!--MyBatis相关依赖-->
    <dependency>
        <groupId>org.mybatis</groupId>
        <artifactId>mybatis</artifactId>
        <version>${mybatis.version}</version>
    </dependency>
    <dependency>
        <groupId>org.mybatis</groupId>
        <artifactId>mybatis-spring</artifactId>
        <version>${mybatis.version}</version>
    </dependency>

    <!--Servlet、JSP相关依赖-->
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>servlet-api</artifactId>
        <version>${servlet-api.version}</version>
        <scope>provided</scope>
    </dependency>
    <dependency>
        <groupId>javax.servlet.jsp</groupId>
        <artifactId>jsp-api</artifactId>
        <version>${jsp-api.version}</version>
        <scope>provided</scope>
    </dependency>
    <dependency>
        <groupId>taglibs</groupId>
        <artifactId>standard</artifactId>
        <version>${standard.version}</version>
    </dependency>

    <!--数据库相关依赖-->
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>${mysql.version}</version>
    </dependency>

    <!--日志相关依赖-->
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-log4j12</artifactId>
        <version>${slf4j.version}</version>
    </dependency>
    <dependency>
        <groupId>log4j</groupId>
        <artifactId>log4j</artifactId>
        <version>${log4j.version}</version>
    </dependency>
</dependencies>

其中，变量版本号需要根据实际情况进行修改。

3. 配置Web.xml

在web.xml中添加DispatcherServlet和ContextLoaderListener：

<servlet>
    <servlet-name>dispatcherServlet</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>/WEB-INF/spring/dispatcherServlet-context.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
</servlet>

<servlet-mapping>
    <servlet-name>dispatcherServlet</servlet-name>
    <url-pattern>/</url-pattern>
</servlet-mapping>

<listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>

<context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>/WEB-INF/spring/root-context.xml</param-value>
</context-param>

其中，DispatcherServlet通过参数contextConfigLocation指定了DispatcherServlet的上下文，而ContextLoaderListener通过参数contextConfigLocation指定了Spring的根上下文。

4. 配置root-context.xml

在Spring的根上下文中，配置数据库连接、事务管理器以及MyBatis相关内容：

<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
    <property name="jdbcUrl" value="jdbc:mysql://localhost:3306/test?useUnicode=true&amp;characterEncoding=utf8" />
    <property name="driverClass" value="com.mysql.jdbc.Driver" />
    <property name="user" value="root" />
    <property name="password" value="root" />
</bean>

<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
    <property name="dataSource" ref="dataSource" />
</bean>

<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
    <property name="dataSource" ref="dataSource" />
    <property name="typeAliasesPackage" value="your.package.name.model" />
    <property name="mapperLocations" value="classpath:your/package/name/mapper/*.xml" />
</bean>

<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
    <property name="basePackage" value="your.package.name.mapper" />
    <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" />
</bean>

其中，dataSource中的jdbcUrl、user和password需要根据实际情况进行修改。typeAliasesPackage指定MyBatis实体类的包名，mapperLocations指定MyBatis Mapper的xml文件路径。

5. 配置dispatcherServlet-context.xml

在DispatcherServlet的上下文中，注册Controller：

<context:component-scan base-package="your.package.name.controller" />

<mvc:annotation-driven />

<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    <property name="prefix" value="/WEB-INF/views/" />
    <property name="suffix" value=".jsp" />
</bean>

其中，component-scan指定Controller的包名，annotation-driven启用Spring MVC注解驱动，InternalResourceViewResolver指定JSP的前缀和后缀。

6. 编写Controller和Mapper

以下是一个简单的Controller示例：

@Controller
@RequestMapping("/user")
public class UserController {
    @Autowired
    private UserService userService;

    @RequestMapping("/list")
    public ModelAndView userList() {
        ModelAndView model = new ModelAndView("user/list");
        List<User> userList = userService.getAllUsers();
        model.addObject("userList", userList);
        return model;
    }

    @RequestMapping(value = "/add", method = RequestMethod.GET)
    public ModelAndView addUserPage() {
        ModelAndView model = new ModelAndView("user/form");
        model.addObject("user", new User());
        return model;
    }

    @RequestMapping(value = "/add", method = RequestMethod.POST)
    public ModelAndView addUser(@ModelAttribute("user") User user) {
        userService.addUser(user);
        return userList();
    }

    @RequestMapping(value = "/delete/{id}", method = RequestMethod.GET)
    public ModelAndView deleteUser(@PathVariable("id") Integer id) {
        userService.deleteUser(id);
        return userList();
    }
}

其中，@Controller和@RequestMapping用于声明Controller和映射URL，@Autowired用于注入UserService。

以下是一个简单的Mapper示例：

<?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="your.package.name.mapper.UserMapper">
    <resultMap id="userMap" type="your.package.name.model.User">
        <id column="id" property="id" />
        <result column="name" property="name" />
        <result column="age" property="age" />
    </resultMap>

    <select id="selectAllUsers" resultMap="userMap">
        SELECT * FROM user
    </select>

    <insert id="insertUser" parameterType="your.package.name.model.User">
        INSERT INTO user(name, age) VALUES(#{name}, #{age})
    </insert>

    <delete id="deleteUser" parameterType="int">
        DELETE FROM user WHERE id = #{id}
    </delete>
</mapper>

其中，namespace指定Mapper的命名空间，resultMap指定结果映射，select和insert、delete指定SQL语句。

以上就是“2020最新版SSM框架整合教程”的完整攻略，希望对你有所帮助。

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2020最新版SSM框架整合教程