SSM框架整合（IntelliJ IDEA + maven + Spring + SpringMVC + MyBatis）

1. 创建maven项目

1.1  File -> New Module，进入创建项目窗口。

1.2  点击Next，填写GroupId、ArtifactId和Version

1.3  接着下一步，这里需要注在Properties中添加一个参数 archetypeCatalog=internal，不加这个参数，在maven生成骨架的时候将会非常慢，有时候直接卡住。来自网上的解释：

archetypeCatalog表示插件使用的archetype元数据，不加这个参数时默认为remote，local，即中央仓库archetype元数据，由于中央

仓库的archetype太多了所以导致很慢，指定internal来表示仅使用内部元数据。

1 .4  填写Module name

1.5  生成maven的项目骨架之后，我们还需要手动在 src/main 下创建 java目录。现在可以直接编写了，我把项目所需要的文件都编写完成之后，项目的工程结构如图。

到此为止，项目的框架基本搭建完成，下面重点说一下项目的配置文件

2.  项目配置文件

 2.1   这里使用maven来引入项目所需要的jar包，所以也就不需要手动来管理jar包了。 pom.xml

<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/maven-v4_0_0.xsd">  
  <modelVersion>4.0.0</modelVersion>  
  <groupId>com.heitian.web</groupId>  
  <artifactId>web-ssm</artifactId>  
  <packaging>war</packaging>  
  <version>1.0-SNAPSHOT</version>  
  <name>web-ssm Maven Webapp</name>  
  <url>http://maven.apache.org</url>  
  <properties>  
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>  
    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>  
  
    <!-- spring版本号 -->  
    <spring.version>4.2.5.RELEASE</spring.version>  
  
    <!-- mybatis版本号 -->  
    <mybatis.version>3.2.8</mybatis.version>  
  
    <!-- mysql驱动版本号 -->  
    <mysql-driver.version>5.1.29</mysql-driver.version>  
  
    <!-- log4j日志包版本号 -->  
    <slf4j.version>1.7.18</slf4j.version>  
    <log4j.version>1.2.17</log4j.version>  
  
  </properties>  
  
  
  <dependencies>  
    <!-- 添加jstl依赖 -->  
    <dependency>  
      <groupId>jstl</groupId>  
      <artifactId>jstl</artifactId>  
      <version>1.2</version>  
    </dependency>  
  
    <dependency>  
      <groupId>javax</groupId>  
      <artifactId>javaee-api</artifactId>  
      <version>7.0</version>  
    </dependency>  
  
    <!-- 添加junit4依赖 -->  
    <dependency>  
      <groupId>junit</groupId>  
      <artifactId>junit</artifactId>  
      <version>4.11</version>  
      <!-- 指定范围，在测试时才会加载 -->  
      <scope>test</scope>  
    </dependency>  
  
    <!-- 添加spring核心依赖 -->  
    <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-oxm</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>${spring.version}</version>  
    </dependency>  
    <dependency>  
      <groupId>org.springframework</groupId>  
      <artifactId>spring-webmvc</artifactId>  
      <version>${spring.version}</version>  
    </dependency>  
    <dependency>  
      <groupId>org.springframework</groupId>  
      <artifactId>spring-context</artifactId>  
      <version>${spring.version}</version>  
    </dependency>  
    <dependency>  
      <groupId>org.springframework</groupId>  
      <artifactId>spring-context-support</artifactId>  
      <version>${spring.version}</version>  
    </dependency>  
    <dependency>  
      <groupId>org.springframework</groupId>  
      <artifactId>spring-aop</artifactId>  
      <version>${spring.version}</version>  
    </dependency>  
  
    <dependency>  
      <groupId>org.springframework</groupId>  
      <artifactId>spring-test</artifactId>  
      <version>${spring.version}</version>  
    </dependency>  
  
    <!-- 添加mybatis依赖 -->  
    <dependency>  
      <groupId>org.mybatis</groupId>  
      <artifactId>mybatis</artifactId>  
      <version>${mybatis.version}</version>  
    </dependency>  
  
    <!-- 添加mybatis/spring整合包依赖 -->  
    <dependency>  
      <groupId>org.mybatis</groupId>  
      <artifactId>mybatis-spring</artifactId>  
      <version>1.2.2</version>  
    </dependency>  
  
    <!-- 添加mysql驱动依赖 -->  
    <dependency>  
      <groupId>mysql</groupId>  
      <artifactId>mysql-connector-java</artifactId>  
      <version>${mysql-driver.version}</version>  
    </dependency>  
    <!-- 添加数据库连接池依赖 -->  
    <dependency>  
      <groupId>commons-dbcp</groupId>  
      <artifactId>commons-dbcp</artifactId>  
      <version>1.2.2</version>  
    </dependency>  
  
    <!-- 添加fastjson -->  
    <dependency>  
      <groupId>com.alibaba</groupId>  
      <artifactId>fastjson</artifactId>  
      <version>1.1.41</version>  
    </dependency>  
  
    <!-- 添加日志相关jar包 -->  
    <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>  
  
    <!-- log end -->  
    <!-- 映入JSON -->  
    <dependency>  
      <groupId>org.codehaus.jackson</groupId>  
      <artifactId>jackson-mapper-asl</artifactId>  
      <version>1.9.13</version>  
    </dependency>  
    <!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-core -->  
    <dependency>  
      <groupId>com.fasterxml.jackson.core</groupId>  
      <artifactId>jackson-core</artifactId>  
      <version>2.8.0</version>  
    </dependency>  
    <!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-databind -->  
    <dependency>  
      <groupId>com.fasterxml.jackson.core</groupId>  
      <artifactId>jackson-databind</artifactId>  
      <version>2.8.0</version>  
    </dependency>  
  
    <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>2.4</version>  
    </dependency>  
  
    <dependency>  
      <groupId>commons-codec</groupId>  
      <artifactId>commons-codec</artifactId>  
      <version>1.9</version>  
    </dependency>  
  </dependencies>  
  
  <build>  
    <finalName>web-ssm</finalName>  
  </build>  
</project>

 

2.2   新建jdbc.properties文件

jdbc.properties

driverClasss=com.mysql.jdbc.Driver  
jdbcUrl=jdbc:mysql://localhost:3306/db_ssm?useUnicode=true&characterEncoding=utf-8&zeroDateTimeBehavior=convertToNull  
username=root  
password=root  
  
#定义初始连接数  
initialSize=0  
#定义最大连接数  
maxActive=20  
#定义最大空闲  
maxIdle=20  
#定义最小空闲  
minIdle=1  
#定义最长等待时间  
maxWait=60000 

 

2.3  新建log4j 配置文件

log4j.properties

    log4j.rootLogger=INFO,Console,File  
      
    #控制台日志  
    log4j.appender.Console=org.apache.log4j.ConsoleAppender  
    log4j.appender.Console.Target=System.out  
    log4j.appender.Console.layout=org.apache.log4j.PatternLayout  
    log4j.appender.Console.layout.ConversionPattern=[%p][%t][%d{yyyy-MM-dd HH\:mm\:ss}][%C] - %m%n  
      
    #普通文件日志  
    log4j.appender.File=org.apache.log4j.RollingFileAppender  
    log4j.appender.File.File=logs/ssm.log  
    log4j.appender.File.MaxFileSize=10MB  
    #输出日志，如果换成DEBUG表示输出DEBUG以上级别日志  
    log4j.appender.File.Threshold=ALL  
    log4j.appender.File.layout=org.apache.log4j.PatternLayout  
    log4j.appender.File.layout.ConversionPattern=[%p][%t][%d{yyyy-MM-dd HH\:mm\:ss}][%C] - %m%n  

 

2.4  新建springmvc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:p="http://www.springframework.org/schema/p"  
           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-4.0.xsd  
                            http://www.springframework.org/schema/context  
                            http://www.springframework.org/schema/context/spring-context-4.0.xsd  
                            http://www.springframework.org/schema/mvc  
                            http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">  
      
        <!-- 自动扫描  @Controller-->  
        <context:component-scan base-package="com.heitian.ssm.controller"/>  
      
        <!--避免IE执行AJAX时，返回JSON出现下载文件 -->  
        <bean id="mappingJacksonHttpMessageConverter"  
              class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">  
            <property name="supportedMediaTypes">  
                <list>  
                    <value>text/html;charset=UTF-8</value>  
                </list>  
            </property>  
        </bean>  
        <!-- 启动SpringMVC的注解功能，完成请求和注解POJO的映射 -->  
        <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">  
            <property name="messageConverters">  
                <list>  
                    <ref bean="mappingJacksonHttpMessageConverter"/> <!-- JSON转换器 -->  
                </list>  
            </property>  
        </bean>  
      
      
        <!-- 定义跳转的文件的前后缀 ，视图模式配置 -->  
        <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">  
            <property name="prefix" value="/WEB-INF/jsp/" />  
            <property name="suffix" value=".jsp"/>  
        </bean>  
      
        <!-- 文件上传配置 -->  
        <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">  
            <!-- 默认编码 -->  
            <property name="defaultEncoding" value="UTF-8"/>  
            <!-- 上传文件大小限制为31M，31*1024*1024 -->  
            <property name="maxUploadSize" value="32505856"/>  
            <!-- 内存中的最大值 -->  
            <property name="maxInMemorySize" value="4096"/>  
        </bean>  
    </beans>  

 

2.5  新建spring和mybatis整合所需的配置文件

 

spring-mybatis.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"  
       xsi:schemaLocation="http://www.springframework.org/schema/beans  
                        http://www.springframework.org/schema/beans/spring-beans-3.1.xsd  
                        http://www.springframework.org/schema/context  
                        http://www.springframework.org/schema/context/spring-context-3.1.xsd  
                        http://www.springframework.org/schema/tx  
                        http://www.springframework.org/schema/tx/spring-tx.xsd">  
  
    <!-- 自动扫描 -->  
    <context:component-scan base-package="com.heitian.ssm"/>  
  
    <!-- 第一种方式：加载一个properties文件 -->  
    <bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">  
        <property name="location" value="classpath:jdbc.properties"/>  
    </bean>  
  
  
    <!-- 第二种方式：加载多个properties文件  
    <bean id="configProperties" class="org.springframework.beans.factory.config.PropertiesFactoryBean">  
        <property name="locations">  
            <list>  
                <value>classpath:jdbc.properties</value>  
                <value>classpath:common.properties</value>  
            </list>  
        </property>  
        <property name="fileEncoding" value="UTF-8"/>  
    </bean>  
    <bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PreferencesPlaceholderConfigurer">  
        <property name="properties" ref="configProperties"/>  
    </bean>  
    -->  
  
    <!-- 配置数据源 -->  
    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"  
          destroy-method="close">  
        <property name="driverClassName" value="${driverClasss}"/>  
        <property name="url" value="${jdbcUrl}"/>  
        <property name="username" value="${username}"/>  
        <property name="password" value="${password}"/>  
        <!-- 初始化连接大小 -->  
        <property name="initialSize" value="${initialSize}"></property>  
        <!-- 连接池最大数量 -->  
        <property name="maxActive" value="${maxActive}"></property>  
        <!-- 连接池最大空闲 -->  
        <property name="maxIdle" value="${maxIdle}"></property>  
        <!-- 连接池最小空闲 -->  
        <property name="minIdle" value="${minIdle}"></property>  
        <!-- 获取连接最大等待时间 -->  
        <property name="maxWait" value="${maxWait}"></property>  
    </bean>  
  
    <!-- mybatis和spring完美整合，不需要mybatis的配置映射文件 -->  
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">  
        <property name="dataSource" ref="dataSource"/>  
        <!-- 自动扫描mapping.xml文件 -->  
        <property name="mapperLocations" value="classpath:mapping/*.xml"></property>  
    </bean>  
  
    <!-- DAO接口所在包名，Spring会自动查找其下的类 -->  
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">  
        <property name="basePackage" value="com.heitian.ssm.dao"/>  
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>  
    </bean>  
  
  
    <!-- (事务管理)transaction manager, use JtaTransactionManager for global tx -->  
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">  
        <property name="dataSource" ref="dataSource"/>  
    </bean>  
  
    <!-- (事务管理)transaction manager, use JtaTransactionManager for global tx -->  
    <tx:annotation-driven transaction-manager="transactionManager"/>  
</beans>

 

2.6  web.xml配置文件

web.xml

    <?xml version="1.0" encoding="UTF-8"?>  
    <web-app xmlns="http://java.sun.com/xml/ns/javaee"  
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
             xsi:schemaLocation="http://java.sun.com/xml/ns/javaee  
              http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"  
             version="3.0">  
      
        <display-name>web-ssm</display-name>  
          
        <context-param>  
            <param-name>contextConfigLocation</param-name>  
            <param-value>classpath:spring-mybatis.xml</param-value>  
        </context-param>  
      
        <context-param>  
            <param-name>log4jConfigLocation</param-name>  
            <param-value>classpath:log4j.properties</param-value>  
        </context-param>  
      
        <!-- 编码过滤器 -->  
        <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>  
      
        <!-- spring监听器 -->  
        <listener>  
            <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>  
        </listener>  
      
        <!-- 防止spring内存溢出监听器，比如quartz -->  
        <listener>  
            <listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>  
        </listener>  
      
      
        <!-- spring mvc servlet-->  
        <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:spring-mvc.xml</param-value>  
            </init-param>  
            <load-on-startup>1</load-on-startup>  
            <async-supported>true</async-supported>  
        </servlet>  
        <servlet-mapping>  
            <servlet-name>SpringMVC</servlet-name>  
            <!-- 此处也可以配置成 *.do 形式 -->  
            <url-pattern>/</url-pattern>  
        </servlet-mapping>  
      
        <welcome-file-list>  
            <welcome-file>/index.jsp</welcome-file>  
        </welcome-file-list>  
      
        <!-- session配置 -->  
        <session-config>  
            <session-timeout>15</session-timeout>  
        </session-config>  
      
    </web-app>  

 

3.  项目配置和部署

3.1    File -> Project Structure，进入创建项目配置窗口。

3.2  创建一个Tomcat容器实例，并把项目部署进去

3.3  项目所需配置好项目访问的根路径，然后启动Tomcat。

3.4  在浏览器地址栏中输入：http://localhost:8080/web-ssm/user/showUser

3.5  项目所需看到图中显示效果，则表示项目搭建成功

4.  值得注意的地方

搭建好项目的框架之后，启动Tomcat，如果访问 http://localhost:8080/user/showUser 出现如下错误：

出现这个错误是因为少了依赖的jar包，只要在pom文件中添加如下依赖即可。

    <!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-core -->  
        <dependency>  
          <groupId>com.fasterxml.jackson.core</groupId>  
          <artifactId>jackson-core</artifactId>  
          <version>2.8.0</version>  
        </dependency>  
        <!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-databind -->  
        <dependency>  
          <groupId>com.fasterxml.jackson.core</groupId>  
          <artifactId>jackson-databind</artifactId>  
          <version>2.8.0</version>  
        </dependency>