SSM整合（基于XML配置方式）

大家好，又见面了，我是你们的朋友全栈君。

我们整合SSM框架时，大部分都是基于注解+XML配置方式。只因为结合这两种方法能够实现同样的效果，而且会更加的轻松。所以在此推荐朋友们用注解+XML配置的方式，基于注解+XML配置方式会另写一篇。但是有朋友和我说，怎么用纯XML方式整合SSM呢？我做了一个入门的整理，如果不足，请多多指教。

本文是基于XML配置方式整合SSM框架，由于本人不太推荐这种方式。

首先可以看一下完整的目录结构

整合步骤如下：

1、我建的是maven工程，首先导入pom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">
  <modelVersion>4.0.0</modelVersion>

  <groupId>con.itcast</groupId>
  <artifactId>ssm_xml</artifactId>
  <version>1.0-SNAPSHOT</version>
  <packaging>war</packaging>

    <name>ssm_tt Maven Webapp</name>
    <!-- FIXME change it to the project's website -->
    <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>5.0.5.RELEASE</spring.version>
      <slf4j.version>1.6.6</slf4j.version>
      <log4j.version>1.2.12</log4j.version>
      <mybatis.version>3.4.5</mybatis.version>
    </properties>

    <dependencies>
      <!-- spring -->
      <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context</artifactId>
        <version>${spring.version}</version>
      </dependency>
      <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context-support</artifactId>
        <version>${spring.version}</version>
      </dependency>
      <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-orm</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-webmvc</artifactId>
        <version>${spring.version}</version>
      </dependency>
      <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-tx</artifactId>
        <version>${spring.version}</version>
      </dependency>
      <dependency>
        <groupId>org.aspectj</groupId>
        <artifactId>aspectjweaver</artifactId>
        <version>1.8.9</version>
      </dependency>

      <!--Mybatis-->
      <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>com.github.pagehelper</groupId>
        <artifactId>pagehelper</artifactId>
        <version>3.7.5</version>
      </dependency>
      <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>5.1.6</version>
      </dependency>

      <!--junit测试-->
      <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>4.12</version>
        <scope>test</scope>
      </dependency>

      <!--Servlet/JSP-->
      <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>javax.servlet-api</artifactId>
        <version>3.1.0</version>
        <scope>provided</scope>
      </dependency>
      <dependency>
        <groupId>javax.servlet.jsp</groupId>
        <artifactId>jsp-api</artifactId>
        <version>2.0</version>
        <scope>provided</scope>
      </dependency>

      <!--数据库连接池-->
      <dependency>
        <groupId>com.alibaba</groupId>
        <artifactId>druid</artifactId>
        <version>1.1.10</version>
      </dependency>
      <dependency>
        <groupId>c3p0</groupId>
        <artifactId>c3p0</artifactId>
        <version>0.9.1.2</version>
      </dependency>

      <!--JSTL-->
      <dependency>
        <groupId>jstl</groupId>
        <artifactId>jstl</artifactId>
        <version>1.2</version>
      </dependency>

      <!--日志工具-->
      <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>

      <!--JSON-->
      <dependency>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-core</artifactId>
        <version>2.9.0</version>
      </dependency>
      <dependency>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-databind</artifactId>
        <version>2.9.0</version>
      </dependency>
      <dependency>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-annotations</artifactId>
        <version>2.9.0</version>
      </dependency>
      <dependency>
        <groupId>com.alibaba</groupId>
        <artifactId>fastjson</artifactId>
        <version>1.2.47</version>
      </dependency>

      <!--Lombok-->
      <dependency>
        <groupId>org.projectlombok</groupId>
        <artifactId>lombok</artifactId>
        <version>1.16.16</version>
      </dependency>

      <!--JWT-->
      <dependency>
        <groupId>io.jsonwebtoken</groupId>
        <artifactId>jjwt</artifactId>
        <version>0.9.0</version>
      </dependency>

      <!--SpringSecurity-->
      <dependency>
        <groupId>org.springframework.security.oauth</groupId>
        <artifactId>spring-security-oauth2</artifactId>
        <version>2.3.3.RELEASE</version>
      </dependency>
      <dependency>
        <groupId>org.springframework.security</groupId>
        <artifactId>spring-security-jwt</artifactId>
        <version>1.0.9.RELEASE</version>
      </dependency>

      <!--jedis-->
      <dependency>
        <groupId>redis.clients</groupId>
        <artifactId>jedis</artifactId>
        <version>2.8.1</version>
      </dependency>
      <dependency>
        <groupId>org.springframework.data</groupId>
        <artifactId>spring-data-redis</artifactId>
        <version>1.7.2.RELEASE</version>
      </dependency>

      <!--文件上传-->
      <dependency>
        <groupId>commons-fileupload</groupId>
        <artifactId>commons-fileupload</artifactId>
        <version>1.3.1</version>
      </dependency>
      <dependency>
        <groupId>commons-io</groupId>
        <artifactId>commons-io</artifactId>
        <version>2.3</version>
      </dependency>

      <!--工具类包-->
      <dependency>
        <groupId>org.apache.commons</groupId>
        <artifactId>commons-lang3</artifactId>
        <version>3.8.1</version>
      </dependency>
      <dependency>
        <groupId>com.google.guava</groupId>
        <artifactId>guava</artifactId>
        <version>25.1-jre</version>
      </dependency>
    </dependencies>

    <build>
    <finalName>SSM_TEST</finalName>
    <plugins>
    <plugin>
      <groupId>org.apache.maven.plugins</groupId>
      <artifactId>maven-compiler-plugin</artifactId>
      <version>3.8.0</version>
      <configuration>
        <target>1.8</target>
        <source>1.8</source>
        <encoding>utf-8</encoding>
      </configuration>
    </plugin>
    </plugins>
    </build>
</project>

2、web工程，先配置web.xml

<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_3_1.xsd"
         version="3.1">

  <display-name>ssm_xml</display-name>
  <!-- 加载spring容器 -->
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:applicationContext.xml</param-value>
  </context-param>

  <!--配置spring的监听器-->
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>

  <!-- springmvc 前端控制器 -->
  <servlet>
    <servlet-name>DispatcherServlet</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <!--初始化参数-->
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath:spring-mvc.xml</param-value>
    </init-param>
    <!-- web应用程序启动时加载 -->
    <!--load-on-startup的值为负数或不设置为请求时加载，如果为0或正整数，值越小的优先级越高-->
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>DispatcherServlet</servlet-name>
    <url-pattern>*.do</url-pattern>
  </servlet-mapping>

  <!-- 解决post乱码 -->
  <filter>
    <filter-name>CharacterEncodingFilter</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>CharacterEncodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>

</web-app>

3、数据库连接配置(jdbc.properties)，我用的是MySQL数据库

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/test
jdbc.username=root
jdbc.password=111111

4、MyBatis配置，我们习惯叫SqlMapConfig.xml

<?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>

    <!-- 自定义别名 -->
    <typeAliases>
        <!--手动配置别名,这种方式只能一个一个的配置-->
        <!--<typeAlias type="com.cyw.domain.User" alias="user"></typeAlias>-->
        <!-- 批量扫描定义别名-->
        <package name="com.cyw.domain"/>
    </typeAliases>

    <!-- 加载映射文件 -->
    <mappers>
        <!--<mapper resource="com/itheima/mapper/UserMapper.xml"></mapper>-->
        <!-- 也可以用包扫描，mapper和类的路径要一一对应 -->
        <mapper class="com.cyw.dao"/>
    </mappers>

</configuration>

5、配置映射文件 UserMapper.xml（由于SqlMapConfig.xml中使用的是包扫描，所以路径需要与实体类路径相同）

<?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.cyw.mapper.UserMapper">

<select id="findAll" resultType="user">
        select * from users
    </select>

</mapper>

6、配置Spring的配置文件 applicationContext.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"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:aop="http://www.springframework.org/schema/aop"
       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.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
       ">

    <!-- 扫描包 加载service实现类 -->
    <context:component-scan base-package="com.cyw.service.impl"/>

    <!--加载jdbc.properties-->
    <context:property-placeholder location="classpath:jdbc.properties"/>

    <!--配置数据源对象-->
    <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}"/>
    </bean>

    <!--配置JdbcTemplate对象-->
    <bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
        <property name="dataSource" ref="dataSource"></property>
    </bean>

    <!--配置UserService-->
    <bean id="userService" class="com.cyw.service.impl.UserServiceImpl">
        <property name="userMapper" ref="userMapper"/>
    </bean>

    <!--整合Mybatis-->
    <!-- 配置sqlsessionFactory -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <!--配置数据源-->
        <property name="dataSource" ref="dataSource"/>
        <!--给实体类起别名-->
        <property name="typeAliasesPackage" value="com.cyw.domain"/>
    </bean>

    <!-- 配置扫描包，加载mapper代理对象 -->
    <bean id="mapperScannerConfig" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.cyw.mapper"/>
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
    </bean>

    <!--开启事务管理器-->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>

    <!--配置事务通知-->
    <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>

    <!--配置aop-->
    <aop:config>
        <aop:advisor advice-ref="txAdvice" pointcut="execution(* com.cyw.service.impl.*.*(..))"/>
    </aop:config>

</beans>

7、配置SpringMVC的配置文件 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:context="http://www.springframework.org/schema/context"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       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.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">

    <!--扫描包-->
    <context:component-scan base-package="com.cyw.controller"/>

    <!--开启万能模式-->
    <!--
    <mvc:annotation-driven />
    会自动注册DefaultAnnotationHandlerMapping与AnnotationMethodHandlerAdapter 两个bean,是spring MVC为@Controllers分发请求所必须的。
    并提供了：数据绑定支持，@NumberFormatannotation支持，@DateTimeFormat支持，@Valid支持，读写XML的支持（JAXB），读写JSON的支持（Jackson）。
    -->
    <mvc:annotation-driven>
        <!--配置消息转换器-->
        <mvc:message-converters>
            <bean class="org.springframework.http.converter.StringHttpMessageConverter">
                <constructor-arg value="UTF-8"/>
            </bean>
        </mvc:message-converters>
    </mvc:annotation-driven>

    <!--开启静态资源访问权限-->
    <!--default-servlet-handler作用：
        如果发现是静态资源的请求，就将该请求转由Web应用服务器默认的Servlet处理，
        如果不是静态资源的请求，才由DispatcherServlet继续处理。-->
    <mvc:default-servlet-handler/>
    <!-- 也可以手动配置 资源映射 -->
    <!--
    resources作用：
        Spring MVC框架自己处理静态资源，并添加一些有用的附加值功能。
    <mvc:resources location="/css/" mapping="/css/**"/>
    <mvc:resources location="/js/" mapping="/js/**"/>
    -->

    <!--配置视图解析器-->
    <bean id="ViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/pages/"/>
        <property name="suffix" value=".jsp"/>
    </bean>

    <!-- 定义文件上传解析器 -->
    <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
        <!-- 设定默认编码 -->
        <property name="defaultEncoding" value="UTF-8"></property>
        <!-- 设定文件上传的最大值5MB，5*1024*1024 -->
        <property name="maxUploadSize" value="5242880"></property>
    </bean>
</beans>

到此，配置就全部结束了。SSM的那些配置文件名称是可以自己命名的，没有固定的名称。但是如果每个人都写着同样的名称就能第一时间知道该配置文件是什么的配置，所以我们约定俗成的就交了这些个名。

接下来就是我们最快乐的写代码时光了：

• 实体类：

User.java

public class User {
    private Integer id;
    private String name;
    private String password;
    private String phone;
    //省略setter/getter方法
}

• dao层（mapper）：

UserMapper.java

public interface UserMapper {
    List<User> findAll();
}

• service层：

UserService.java

public interface UserService {
    List<User> findAll();
}

UserServiceImpl.java

public class UserServiceImpl implements UserService {

    private UserMapper userMapper;

    public void setUserMapper(UserMapper userMapper) {
        this.userMapper = userMapper;
    }

    @Override
    public List<User> findAll() {
        return userMapper.findAll();
    }
}

• web层

UserController.java

@Controller
@RequestMapping("/user")
public class UserController {

    @Autowired
    private UserService userService;

    @RequestMapping("/findAll")
    @ResponseBody
    public List<User> findAll(){
        List<User> userList = userService.findAll();
        return userList;
    }
}

由于没有写页面，就用工具测试一下效果吧：

这个整合适合入门小白，里面注释比较多，看懂应该都没有什么问题。而且还有一些比如文件上传也给提供了，可以自己在需要的时候使用。在CSDN提供一下源码下载https://download.csdn.net/download/nbl153/11245465，但是CSDN下载需要积分，没积分的朋友看这https://pan.baidu.com/s/1gV8NKeYFDcfWztIQtKVc3w    提取码：uhoh