一.简介

SSM（Spring+SpringMVC+MyBatis）框架集由Spring、SpringMVC、MyBatis三个开源框架整合而成，常作为数据源较简单的web项目的框架。  其中Spring是一个轻量级的控制反转（IoC）和面向切面（AOP）的容器框架。  SpringMVC分离了控制器、模型对象、分派器以及处理程序对象的角色，这种分离让它们更容易进行定制。  MyBatis是一个支持普通SQL查询，存储过程和高级映射的优秀持久层框架。

二.开发工具和开发环境

intellij idea: 2017.2.7

jdk:1.8

tomcat:9.0.13

mysql: 5.5

maven:3

使用druid连接池

三.idea创建maven工程

①.新建maven工程，点击Create New Project

②.选择Maven-》选择java jdk-》勾选Create from archetype-》选择maven-archetype-webapp,如下图所示

③填写GroupId（域名.公司名.项目名）、Artifacted(模块名)

④选择本地maven解压的路径、配置文件

⑤输入项目名称，选择项目存放地址

⑥创建成功，目录结构如下

⑦在main底下new两个文件夹，java和resources

⑧标记源码文件夹和资源文件夹（或者点Project Struct，设置源码文件夹和资源文件夹）

设置完成后，文件夹图标会有所改变，如图：

四.配置spring、springmvc、mybatis 等相关依赖

新建配置文件如图：

配置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>com.lm.ssm</groupId> <artifactId>web</artifactId> <version>1.0-SNAPSHOT</version> <packaging>war</packaging> <name>web 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>4.3.8.RELEASE</spring.version> </properties> <dependencies> <!-- Spring相关包 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-core</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-web</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-jdbc</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-tx</artifactId> <version>${spring.version}</version> </dependency> <!-- AOP相关包 --> <dependency> <groupId>org.aspectj</groupId> <artifactId>aspectjrt</artifactId> <version>1.8.0</version> </dependency> <dependency> <groupId>org.aspectj</groupId> <artifactId>aspectjweaver</artifactId> <version>1.8.0</version> </dependency> <!-- JSON --> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-databind</artifactId> <version>2.8.7</version> </dependency> <!-- MyBatis相关包 --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>3.3.0</version> </dependency> <!-- MySQL相关包 --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.26</version> </dependency> <!-- 数据库连接池 --> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version>1.1.6</version> </dependency> <!-- Spring集成MyBatis --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version>1.2.3</version> </dependency> <!-- JSP标准标签库 --> <dependency> <groupId>javax.servlet</groupId> <artifactId>jstl</artifactId> <version>1.2</version> </dependency> <!-- 日志相关包 --> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>1.2.17</version> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-api</artifactId> <version>1.7.21</version> </dependency> <!-- 单元测试相关包 --> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>3.8.1</version> <scope>test</scope> </dependency> <!-- java ee --> <dependency> <groupId>javax</groupId> <artifactId>javaee-api</artifactId> <version>7.0</version> </dependency> <!-- 实现slf4j接口并整合 --> <dependency> <groupId>ch.qos.logback</groupId> <artifactId>logback-classic</artifactId> <version>1.2.2</version> </dependency> </dependencies> <build> <finalName>web</finalName> <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) --> <plugins> <plugin> <artifactId>maven-clean-plugin</artifactId> <version>3.1.0</version> </plugin> <!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging --> <plugin> <artifactId>maven-resources-plugin</artifactId> <version>3.0.2</version> </plugin> <plugin> <artifactId>maven-compiler-plugin</artifactId> <version>3.8.0</version> </plugin> <plugin> <artifactId>maven-surefire-plugin</artifactId> <version>2.22.1</version> </plugin> <plugin> <artifactId>maven-war-plugin</artifactId> <version>3.2.2</version> </plugin> <plugin> <artifactId>maven-install-plugin</artifactId> <version>2.5.2</version> </plugin> <plugin> <artifactId>maven-deploy-plugin</artifactId> <version>2.8.2</version> </plugin> </plugins> </pluginManagement> </build> </project> jdbc.properties jdbc.driver=com.mysql.jdbc.Driver jdbc.url=jdbc:mysql://localhost:3306/ssm?characterEncoding=utf-8 jdbc.username=root jdbc.password=nideshengri log4j.properties

给出两种日志写法（选其中一种）

# Global logging configuration log4j.rootLogger=DEBUG, stdout # Console output... log4j.appender.stdout=org.apache.log4j.ConsoleAppender log4j.appender.stdout.layout=org.apache.log4j.PatternLayout log4j.appender.stdout.layout.ConversionPattern=%5p [%t] - %m%n log4j.logger.java.sql.ResultSet=INFO log4j.logger.org.apache=INFO log4j.logger.java.sql.Connection=DEBUG log4j.logger.java.sql.Statement=DEBUG log4j.logger.java.sql.PreparedStatement=DEBUG #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 log4j.appender.D.File=E:/ideaproject/web/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 #log4j.appender.D.DatePattern ='.'yyyy-MM-dd #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 log4j.appender.E.File =E:/ideaproject/web/src/main/webapp/WEB-INF/logs/error/error.txt log4j.appender.E.Append = true log4j.appender.E.Threshold = ERROR #log4j.appender.E.DatePattern = '_'yyyyMMdd'.log' 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 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/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd"> <!-- 配置Controller扫描 --> <context:component-scan base-package="com.web.controller" /> <!-- 配置Service扫描 --> <context:component-scan base-package="com.web.service" /> <!-- 开启SpringMVC注解模式 --> <mvc:annotation-driven/> <!-- 静态资源默认servlet配置 --> <mvc:default-servlet-handler/> <!-- 对静态资源放行 --> <mvc:resources location="/css/" mapping="/css/**"/> <mvc:resources location="/js/" mapping="/js/**"/> <mvc:resources location="/fonts/" mapping="/fonts/**"/> <!-- 配置视图解析器 --> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <!-- 前缀 --> <property name="prefix" value="/WEB-INF/jsp/" /> <!-- 后缀 --> <property name="suffix" value=".jsp" /> </bean> </beans> spring-mybatis.xml <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" 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-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/aop http://www.springframework.org/schema/aop/spring-aop-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/util http://www.springframework.org/schema/util/spring-util-4.0.xsd"> <!-- 配置 读取properties文件 jdbc.properties --> <context:property-placeholder location="classpath:jdbc.properties" /> <!-- 配置 数据源 --> <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource"> <property name="driverClassName" value="${jdbc.driver}" /> <property name="url" value="${jdbc.url}" /> <property name="username" value="${jdbc.username}" /> <property name="password" value="${jdbc.password}" /> </bean> <!-- 配置SqlSessionFactory --> <bean class="org.mybatis.spring.SqlSessionFactoryBean"> <!-- 注入数据库连接池 --> <property name="dataSource" ref="dataSource"/> <!-- 扫描model包 使用别名 --> <property name="typeAliasesPackage" value="com.web.model"/> <!-- 扫描sql配置文件:mapper需要的xml文件 --> <property name="mapperLocations" value="classpath:mapper/*.xml"/> </bean> <!-- 配置Mapper扫描 --> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <!-- 设置Mapper扫描包 --> <property name="basePackage" value="com.web.mapper" /> </bean> </beans> web.xml <?xml version="1.0" encoding="UTF-8"?> <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_2_5.xsd" id="WebApp_ID" version="2.5"> <display-name>web</display-name> <welcome-file-list> <welcome-file>index.html</welcome-file> <welcome-file>index.htm</welcome-file> <welcome-file>index.jsp</welcome-file> <welcome-file>default.html</welcome-file> <welcome-file>default.htm</welcome-file> <welcome-file>default.jsp</welcome-file> </welcome-file-list> <!-- 配置spring --> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:spring-*.xml</param-value> </context-param> <!-- 配置监听器加载spring --> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <!-- 配置过滤器，解决post的乱码问题 --> <filter> <filter-name>encoding</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>encoding</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <!-- 配置SpringMVC --> <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> <!-- 配置springmvc什么时候启动，参数必须为整数 --> <!-- 如果为0或者大于0，则springMVC随着容器启动而启动 --> <!-- 如果小于0，则在第一次请求进来的时候启动 --> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>SpringMVC</servlet-name> <!-- 所有的请求都进入springMVC --> <url-pattern>/</url-pattern> </servlet-mapping> </web-app>

或者如下设置

五.创建测试程序

创建测试表

创建pojo实体类：User

package com.web.model; /** * @ClassName User * @Author liming * @Description //TODO * @Date 2019/7/11 11:38 **/ public class User { /**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; } @Override public String toString() { return "User{" + "id='" + id + '\'' + ", username='" + username + '\'' + ", password='" + password + '\'' + ", sex='" + sex + '\'' + '}'; } }

创建mpper接口：UserDao

package com.web.mapper; import com.web.model.User; public interface UserDao { User selectUser(long userId); }

创建mapper文件：UserDao.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.web.mapper.UserDao"> <parameterMap id="parameterMap" type="com.web.model.User"></parameterMap> <resultMap id="resultMap" type="com.web.model.User"> <result property="id" column="id"/> <result property="username" column="username"/> <result property="password" column="password"/> <result property="sex" column="sex"/> </resultMap> <select id="selectUser" resultMap="resultMap"> select * from user where id=#{id} </select> </mapper>

创建Service接口：UserService

package com.web.service; import com.web.model.User; public interface UserService { public User selectUser(long userId); }

创建service接口实现类：UserServiceImpl

package com.web.service; import com.web.mapper.UserDao; import com.web.model.User; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; /** * @ClassName UserServiceImpl * @Author liming * @Description //TODO * @Date 2019/7/11 11:40 **/ @Service public class UserServiceImpl implements UserService { @Autowired private UserDao userDao; @Override public User selectUser(long userId) { return userDao.selectUser(userId); } }

创建controller层：

package com.web.controller; import com.web.model.User; import com.web.service.UserService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestParam; import org.springframework.web.bind.annotation.ResponseBody; /** * @ClassName UserController * @Author liming * @Description //TODO * @Date 2019/7/12 9:53 **/ @Controller public class UserController { @Autowired private UserService userService; @RequestMapping(value = "/") public String test(){ System.out.println("helloword"); return "index"; } @ResponseBody @RequestMapping(value = "getUser") public User getUser(@RequestParam int userId){ return userService.selectUser(userId); } }

创建完成后目录结构：

六.测试程序

1.配置tomcat 

访问结果如下：

到此完成！

本人初学者，如有问题请指正，不喜勿喷！