目录
【开发环境】
一、【新建项目】
二、【目录结构调整】
三、【maven包初始化】
四、【Spring和Mybatis配置】
五、【Demo构建】
项目源码下载地址：https://gitee.com/liwenchao_jack/ssm
1.操作系统：windows
2.开发工具：IDEA
3.java -version
maven选项卡中找到对应的java web选项，然后下一步
在这里填入组织信息，按照自己的需求填写，然后下一步
在这里配置本地maven仓库，如果没有下载maven,请先下载，下载地址：https://maven.apache.org/download.cgi，选择apache-maven-xxx-bin.zip下载到本地，然后配置settings.xml文件的远程下载地址是阿里云，具体配置自行百度，然后按照下面步骤完成配置，点击下一步
给项目起个项目名和保存的路径，然后finish
项目创建完成，目录结构如下：
如果需要修改项目版本，可以在file→settings→搜索Java Compiler进行修改；快捷键：Ctrl+Alt+S；这里可以避免spring框架版本和JDK版本不兼容的问题，升级版本。
添加以下两个目录：java和resources
选择file→project Structure（Ctrl+Alt+Shift+S），选择Modules标签页，调整项目结构，java→Sources，resources→Resources，然后apply→ok
继续创建文件夹，如下完整目录结构：
- Java为主Java代码文件夹
- Controller 控制器文件文件夹
- Dao （数据访问）层文件夹
- Service（业务逻辑）层文件夹
- Entity（实体）层文件夹
- Test 测试文件夹
- resources资源文件夹
- mapper mybatis文件夹
- sql 数据表文件夹
- webapp web页面文件夹
Maven是采用配置文件的方式进行jar包的自动导入。下面添加我们将会用到的一系列jar包配置：
<?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.com.springmvc</groupId> <artifactId>ssm_test</artifactId> <version>1.0-SNAPSHOT</version> <packaging>war</packaging> <name>ssm_test 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>1.7</maven.compiler.source> <maven.compiler.target>1.7</maven.compiler.target> <!-- spring版本号 --> <spring.version>4.1.1.RELEASE</spring.version> <!-- mybatis版本号 --> <mybatis.version>3.2.6</mybatis.version> <!-- log4j日志文件管理包版本 --> <slf4j.version>1.7.7</slf4j.version> <log4j.version>1.2.17</log4j.version> <!-- jackson包版本 --> <jackson.version>2.5.0</jackson.version> </properties> <dependencies> <!--单元测试依赖 --> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.11</version> <!-- 表示开发的时候引入，发布的时候不会加载此包 --> <scope>test</scope> </dependency> <!--spring单元测试依赖 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-test</artifactId> <version>${spring.version}</version> <scope>test</scope> </dependency> <!-- springMVC核心包 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>${spring.version}</version> </dependency> <!-- spring核心包 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-beans</artifactId> <version>${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>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-aspects</artifactId> <version>4.0.9.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-tx</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-web</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> <version>${spring.version}</version> </dependency> <!-- AOP begin --> <dependency> <groupId>org.aspectj</groupId> <artifactId>aspectjrt</artifactId> <version>1.7.4</version> </dependency> <dependency> <groupId>org.aspectj</groupId> <artifactId>aspectjweaver</artifactId> <version>1.7.4</version> </dependency> <dependency> <groupId>cglib</groupId> <artifactId>cglib</artifactId> <version>3.1</version> </dependency> <!-- AOP end --> <!-- mybatis核心包 --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>${mybatis.version}</version> </dependency> <!--mybatis spring 插件 --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version>1.2.2</version> </dependency> <!-- Mysql数据库驱动包 --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.34</version> </dependency> <!-- connection pool --> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version>1.0.5</version> <scope>runtime</scope> </dependency> <!-- 日志文件管理包 --> <!-- log start --> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>${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 --> <!--servlet--> <dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <version>3.0.1</version> <scope>provided</scope> </dependency> <dependency> <groupId>javax.servlet.jsp</groupId> <artifactId>jsp-api</artifactId> <version>2.2</version> <scope>provided</scope> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>jstl</artifactId> <version>1.2</version> </dependency> <!-- 映入JSON --> <dependency> <groupId>org.codehaus.jackson</groupId> <artifactId>jackson-core-asl</artifactId> <version>1.9.13</version> </dependency> <dependency> <groupId>org.codehaus.jackson</groupId> <artifactId>jackson-mapper-asl</artifactId> <version>1.9.13</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-annotations</artifactId> <version>${jackson.version}</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-databind</artifactId> <version>${jackson.version}</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-core</artifactId> <version>${jackson.version}</version> </dependency> <dependency> <groupId>net.sf.json-lib</groupId> <artifactId>json-lib</artifactId> <version>2.1</version> <classifier>jdk15</classifier> </dependency> <!-- 用dom4j解析xml文件 --> <dependency> <groupId>dom4j</groupId> <artifactId>dom4j</artifactId> <version>1.4</version> </dependency> <!-- ehcache --> <dependency> <groupId>net.sf.ehcache</groupId> <artifactId>ehcache-core</artifactId> <version>2.6.9</version> </dependency> <dependency> <groupId>net.sf.ehcache</groupId> <artifactId>ehcache-web</artifactId> <version>2.0.4</version> </dependency> <!-- 上传组件包 --> <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> <dependency> <groupId>org.apache.commons</groupId> <artifactId>commons-collections4</artifactId> <version>4.0</version> </dependency> <dependency> <groupId>org.apache.commons</groupId> <artifactId>commons-lang3</artifactId> <version>3.3.2</version> </dependency> <!-- commons-beanutils --> <dependency> <groupId>commons-beanutils</groupId> <artifactId>commons-beanutils</artifactId> <version>1.7.0</version> <exclusions> <exclusion> <groupId>commons-logging</groupId> <artifactId>commons-logging</artifactId> </exclusion> </exclusions> </dependency> <!-- freemarker --> <dependency> <groupId>org.freemarker</groupId> <artifactId>freemarker</artifactId> <version>2.3.19</version> </dependency> <!-- dom4j读取XML --> <dependency> <groupId>dom4j</groupId> <artifactId>dom4j</artifactId> <version>1.6.1</version> </dependency> </dependencies> <build> <finalName>Demo</finalName> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <configuration> <source>1.6</source> <target>1.6</target> </configuration> </plugin> </plugins> <!-- 解决Maven项目编译后classes文件中没有.xml和.properties问题 --> <resources> <resource> <directory>src/main/java</directory> <includes> <include>**/*.xml</include> </includes> <filtering>true</filtering> </resource> <resource> <directory>src/main/resources</directory> <includes> <include>**/*.xml</include> <include>**/*.properties</include> </includes> <filtering>true</filtering> </resource> </resources> </build> </project>等待jar包下载到本地默认仓库，maven导入阶段完成，我们就可以进行下一步了。如果jar包不能正常导入，可以有下面处理办法：从这个地址：https://mvnrepository.com/；下载对应的jar包。然后查看本地是否安装了maven:
win+R快捷键，然后输入cmd，最后输入mvn -v；这里我已经配置好了，没有配置的自行百度。
通过命令安装jar包：
示例：mvn install:install-file -DgroupId=org.mybatis.generator -DartifactId=mybatis-generator-core -Dversion=1.3.5 -Dpackaging=jar -Dfile=D:\mybatis-generator-core-1.3.5.jar
-DgroupId、-DartifactId、 -Dversion可以参看我们pom里的jar包依赖修改，-Dfile是你下载下来的那个jar的本地目录，其他无需更改。
我在这里直接进行和mybatis的相关配置，不单一配置spring mvc，后面会提供源码下载供参考。
配置文件包含：spring-context.xml、spring-mvc.xml、web.xml、jdbc.properties、log4j.properties
配置spring-context.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-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/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd" default-lazy-init="true"> <description>Spring Configuration</description> <!-- 开启注解处理器 --> <context:annotation-config/> <!-- 开启组件自动扫描；使用Annotation自动注册Bean，解决事物失效问题：在主容器中不扫描@Controller注解，在SpringMvc中只扫描@Controller注解。 --> <context:component-scan base-package="com.springmvc"><!-- base-package 如果多个，用“,”分隔 --> <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/> </context:component-scan> <!--引入属性文件 --> <context:property-placeholder location="classpath:jdbc.properties" /> <!-- dataSource 配置数据源 --> <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close"> <!-- 基本属性 url、user、password --> <property name="url" value="${jdbc.url}" /> <property name="username" value="${jdbc.username}" /> <property name="password" value="${jdbc.password}" /> <!-- 配置初始化大小、最小、最大 --> <property name="initialSize" value="1" /> <property name="minIdle" value="1" /> <property name="maxActive" value="20" /> <!-- 配置获取连接等待超时的时间 --> <property name="maxWait" value="60000" /> <!-- 配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒 --> <property name="timeBetweenEvictionRunsMillis" value="60000" /> <!-- 配置一个连接在池中最小生存的时间，单位是毫秒 --> <property name="minEvictableIdleTimeMillis" value="300000" /> <property name="validationQuery" value="SELECT 'x'" /> <property name="testWhileIdle" value="true" /> <property name="testOnBorrow" value="false" /> <property name="testOnReturn" value="false" /> <!-- 打开PSCache，并且指定每个连接上PSCache的大小 --> <property name="poolPreparedStatements" value="false" /> <property name="maxPoolPreparedStatementPerConnectionSize" value="20" /> <!-- 配置监控统计拦截的filters --> <property name="filters" value="stat" /> </bean> <!-- spring和MyBatis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:mapper/*.xml"/> </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.springmvc.dao"/> <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/> </bean> <!-- 对dataSource 数据源进行事务管理 --> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource"></property> </bean> <!-- 事务管理 通知 --> <tx:advice id="txAdvice" transaction-manager="transactionManager"> <tx:attributes> <!-- 对insert,create,update,modify,delete,remove 开头的方法进行事务管理,只要有异常就回滚 --> <tx:method name="insert*" propagation="REQUIRED" rollback-for="java.lang.Throwable" read-only="false"/> <tx:method name="add*" propagation="REQUIRED" rollback-for="java.lang.Throwable" read-only="false"/> <tx:method name="create*" propagation="REQUIRED" rollback-for="java.lang.Throwable" read-only="false"/> <tx:method name="update*" propagation="REQUIRED" rollback-for="java.lang.Throwable" read-only="false"/> <tx:method name="modify*" propagation="REQUIRED" rollback-for="java.lang.Throwable" read-only="false"/> <tx:method name="delete*" propagation="REQUIRED" rollback-for="java.lang.Throwable" read-only="false"/> <tx:method name="remove*" propagation="REQUIRED" rollback-for="java.lang.Throwable" read-only="false"/> <!-- find,get,select,count开头的方法,开启只读,提高数据库访问性能 --> <tx:method name="find*" read-only="true" /> <tx:method name="get*" read-only="true" /> <tx:method name="select*" read-only="true" /> <tx:method name="count*" read-only="true" /> <!-- 对其他方法 使用默认的事务管理 --> <tx:method name="*" /> </tx:attributes> </tx:advice> <!-- 事务 aop 配置 --> <aop:config> <aop:pointcut id="serviceMethods" expression="execution(public * com.springmvc.service..*(..))" /> <aop:advisor advice-ref="txAdvice" pointcut-ref="serviceMethods" /> </aop:config> <!-- 配置使Spring采用CGLIB代理 --><!-- 开启基于@AspectJ切面的注解处理器 --> <aop:aspectj-autoproxy proxy-target-class="true" /> <!-- 配置 Annotation 驱动，扫描@Transactional注解的类定义事务 --> <tx:annotation-driven transaction-manager="transactionManager" proxy-target-class="true"/> </beans>配置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"> <description>Spring MVC Configuration</description> <!-- 启用spring mvc 注解, 默认的注解映射的支持 --> <mvc:annotation-driven/> <!-- 自动扫描该包，使SpringMVC认为包下用了@controller注解的类是控制器 --> <context:component-scan base-package="com.springmvc"/> <bean id="localeResolver" class="org.springframework.web.servlet.i18n.CookieLocaleResolver"> <property name="defaultLocale" value="zh_CN" /> </bean> <mvc:interceptors> <bean class="org.springframework.web.servlet.i18n.LocaleChangeInterceptor" /> </mvc:interceptors> <!-- 支持返回json(避免IE在ajax请求时，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> <value>text/json;charset=UTF-8</value> <value>application/json;charset=UTF-8</value> </list> </property> </bean> <!-- 启动Spring MVC的注解功能，完成请求和注解POJO的映射， 配置一个基于注解的定制的WebBindingInitializer，解决日期转换问题，方法级别的处理器映射 --> <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"> <property name="cacheSeconds" value="0" /> <property name="messageConverters"> <list> <ref bean="mappingJacksonHttpMessageConverter" /><!-- json转换器 --> </list> </property> </bean> <!-- 默认的视图解析器 --> <bean id="defaultViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver" p:order="3"> <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/> <property name="contentType" value="text/html" /> <property name="prefix" value="/WEB-INF/page/"/> <property name="suffix" value=".jsp"/><!--可为空,方便实现自已的依据扩展名来选择视图解释类的逻辑 --> </bean> <!-- 配置springMVC处理上传文件的信息 --> <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"> <property name="defaultEncoding" value="utf-8" /> <property name="maxUploadSize" value="10485760000" /> <property name="maxInMemorySize" value="40960" /> </bean> <!-- Bean解析器,级别高于默认解析器,寻找bean对象进行二次处理 --> <bean class="org.springframework.web.servlet.view.BeanNameViewResolver" p:order="0"/> <!-- 对静态资源文件的访问， 将无法mapping到Controller的path交给default servlet handler处理 --> <mvc:default-servlet-handler /> <!-- 静态资源映射 --> <!--<mvc:resources mapping="/static/**" location="/static/" cache-period="31536000"/>--> </beans>配置web.xml
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd" > <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_3_0.xsd" id="WebApp_ID" version="3.0"> <display-name>Manager</display-name> <context-param> <description>配置Spring配置文件路径</description> <param-name>contextConfigLocation</param-name> <!-- 如果是监听多个文件，可用‘，’隔开 --> <param-value>classpath:config/spring-*.xml</param-value> </context-param> <listener> <description>配置Spring上下文监听器</description> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <listener> <description>Introspector缓存清除监听器</description> <listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class> </listener> <listener> <description>request监听器</description> <listener-class>org.springframework.web.context.request.RequestContextListener</listener-class> </listener> <!-- 配置Spring字符编码过滤器 --> <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> <init-param> <param-name>forceEncoding</param-name> <param-value>true</param-value> </init-param> </filter> <filter-mapping> <filter-name>encodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <!--log4j配置文件加载--> <context-param> <param-name>log4jConfigLocation</param-name> <param-value>classpath:log4j.properties</param-value> </context-param> <!--启动一个watchdog线程每1800秒扫描一下log4j配置文件的变化--> <context-param> <param-name>log4jRefreshInterval</param-name> <param-value>1800000</param-value> </context-param> <!--spring log4j监听器--> <listener> <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class> </listener> <!-- Spring MVC 核心控制器 DispatcherServlet 配置开始 --> <servlet> <servlet-name>SpringMVC</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <!-- 可以通过contextConfigLocation来自定义SpringMVC配置文件的位置，如不指定，则默认在WEB-INF目录下，名称为[<servlet-name>]-servlet.xml， 此时文件名必须为[<servlet-name>]-servlet.xml，否则会出错--> <!--以下init-param是自定义SpringMVC的配置文件的位置 --> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:config/spring-mvc.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <!-- 拦截设置 --> <servlet-mapping> <servlet-name>SpringMVC</servlet-name> <!-- 此处可以可以配置成*.do，对应struts的后缀习惯 --> <url-pattern>/</url-pattern> </servlet-mapping> <!-- Spring MVC 核心配置结束 --> <!-- 激活Tomcat的defaultServlet来处理静态文件 --> <servlet-mapping> <servlet-name>default</servlet-name> <url-pattern>/static/*</url-pattern> </servlet-mapping> <!-- session 时间 --> <session-config> <session-timeout>30</session-timeout> </session-config> </web-app>配置jdbc.properties
#MySQL jdbc.driver=com.mysql.jdbc.Driver jdbc.url=jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=UTF-8 jdbc.username=root jdbc.password=123456 #oracle #jdbc.driver=oracle.jdbc.driver.OracleDriver #jdbc.url=jdbc:oracle:thin:@localhost:3306:test #jdbc.username=root #jdbc.password=123456配置log4j.properties
#日志输出级别 log4j.rootLogger=debug,stdout,D,E #设置stdout的日志输出控制台 log4j.appender.stdout=org.apache.log4j.ConsoleAppender #输出日志到控制台的方式，默认为System.out log4j.appender.stdout.Target = System.out #设置使用灵活布局 log4j.appender.stdout.layout=org.apache.log4j.PatternLayout #灵活定义输出格式 log4j.appender.stdout.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss,SSS} -[%p] method:[%c (%rms)] - %m%n #每天产生一个日志文件 log4j.appender.D=org.apache.log4j.DailyRollingFileAppender #设置的输出日志(绝对路径) log4j.appender.D.File=D:/workspace/workspace3/ssm_test/src/main/webapp/WEB-INF/logs/all/log.txt #设置的日志最大限制 log4j.appender.D.MaxFileSize=6000KB #最多只保存20个备份文件 log4j.appender.D.MaxBackupIndex=20 #输出INFO级别以上的日志 og4j.appender.D.Threshold=debug log4j.appender.D.Append = true log4j.appender.D.ImmediateFlush = true #设置使用灵活布局 log4j.appender.D.layout=org.apache.log4j.PatternLayout #灵活定义输出格式 log4j.appender.D.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss,SSS} -[%p] method:[%l (%rms)] - %m%n log4j.appender.E = org.apache.log4j.DailyRollingFileAppender #设置的输出日志(绝对路径) log4j.appender.E.File =D:/workspace/workspace3/ssm_test/src/main/webapp/WEB-INF/logs/error/error.txt log4j.appender.E.Append = true log4j.appender.E.Threshold = ERROR log4j.appender.E.layout = org.apache.log4j.PatternLayout log4j.appender.E.layout.ConversionPattern = %d{yyyy-MM-dd HH:mm:ss,SSS} -[%p] method:[%l (%rms)] - %m%n到此刻，我们的spring、springmvc、mybatis已经整合完毕，后面就是要进行demo测试，我们实现一个登陆功能。
打开数据库，执行以下sql脚本：
/* Date: 2019-07-22 19:49:03 */ SET FOREIGN_KEY_CHECKS=0; -- ---------------------------- -- Table structure for `t_user` -- ---------------------------- DROP TABLE IF EXISTS `t_user`; CREATE TABLE `t_user` ( `id` varchar(11) NOT NULL, `username` varchar(40) NOT NULL, `password` varchar(40) NOT NULL, `sex` varchar(4) NOT NULL, PRIMARY KEY (`id`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8; -- ---------------------------- -- Records of t_user -- ---------------------------- INSERT INTO `t_user` VALUES ('1', 'user', '123', '男'); INSERT INTO `t_user` VALUES ('2', 'admin', '456', '女');下面我们从entity→mapper→dao→service→controller来构建
编写entity：User
package com.springmvc.entity; import java.io.Serializable; /** * Created by liwc on 2019-07-22 * 用户实体类. */ public class User implements Serializable { private static final long serialVersionUID = 1L; /**用户ID*/ private String id; /**用户名*/ private String username; /**密码*/ private String password; /**姓名*/ private String sex; public String getId() { return id; } public void setId(String id) { this.id = id; } public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } public String getSex() { return sex; } public void setSex(String sex) { this.sex = sex; } }编写mapper：UserMapper.xml
<?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.springmvc.dao.UserDao"> <parameterMap id="parameterMap" type="com.springmvc.entity.User"></parameterMap> <resultMap id="resultMap" type="com.springmvc.entity.User"> <result property="id" column="id"/> <result property="username" column="username"/> <result property="password" column="password"/> <result property="sex" column="sex"/> </resultMap> <sql id="columnSql"> <trim suffixOverrides=","> t.id, t.username, t.password, t.sex </trim> </sql> <select id="findAll" resultMap="resultMap"> SELECT <include refid="columnSql"></include> FROM t_user t </select> </mapper>编写dao：UserDao
package com.springmvc.dao; import com.springmvc.entity.User; import org.apache.ibatis.annotations.Param; import org.springframework.stereotype.Repository; import java.util.List; /** * Created by liwc on 2019-07-22 * 用户dao接口. */ @Repository("UserDao") public interface UserDao { /** * 查询所有用户 * @return */ List<User> findAll(); }编写service：UserService
package com.springmvc.service; import com.springmvc.entity.User; import java.util.List; /** * Created by liwc on 2019-07-22 * 用户service接口 */ public interface UserService { /** * 查询所有用户 * @return */ List<User> findAll(); }UserviceImpl
package com.springmvc.service.impl; import com.springmvc.dao.UserDao; import com.springmvc.entity.User; import com.springmvc.service.UserService; import org.springframework.stereotype.Service; import javax.annotation.Resource; import java.util.List; /** * Created by liwc on 2019-07-22 * 用户service实现类 */ @Service("UserService") public class UserServiceImpl implements UserService { @Resource(name = "UserDao") private UserDao userDao; @Override public List<User> findAll() { return userDao.findAll(); } }编写controller：ViewController
package com.springmvc.controller; import com.alibaba.fastjson.JSON; import com.springmvc.entity.User; import com.springmvc.service.UserService; import org.apache.log4j.Logger; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.ResponseBody; import javax.annotation.Resource; import java.util.List; @Controller @RequestMapping("/user") public class ViewController { private Logger logger = Logger.getLogger(ViewController.class); @Resource(name = "UserService") private UserService userService; @RequestMapping("/findAll") @ResponseBody public String findAll(){ List<User> users = userService.findAll(); return JSON.toJSONString(users); } }完整目录结构项：
根据下图完成本地tomcat的添加及配置：
选择Configure...→配置本地tomcat→ok
将我们的编译后打成war的项目添加进来，选择图中所示
IDEA有自己的热加载功能，可以参看下图中设置；当然，我们可以通过jrebel进行热加载，我们在file→settings→plugins→Marketplace→jrebel找到对应的插件进行安装，不过还需要破解，具体破解步骤可以自行百度。
启动项目，发url请求。下图中的都可以进行项目启动，启动项目之后要看具体的控制台输出日志，如有报错，自行百度解决。
如果发送请求之后页面中显示这个，那就表示SSM项目搭建完毕。
项目源码下载地址：https://gitee.com/liwenchao_jack/ssm
演示结束，谢谢！
