Spring是一个轻量级的框架,用到了注解和自动装配,就是IOC和AOP;
SpringMVC是Spring实现的一个Web层,相当于Struts的框架;
Mybatis是 一个持久层的框架,在使用上相比Hibernate更加灵活,可以控制sql的编写,处理与数据库的CRUD相关的操作。
1.首先先来粗略搭建一下SSM 项目,创建一个Maven项目,选择File-->New-->Maven Project
(在此之前需要配置好maven环境,可参考http://blog.csdn.net/my2016/article/details/52326627)
2.选择 maven-arrchetype-webapp,为什么选择这个呢,可以参考一下这篇博文,讲得还是比较详细的
http://blog.csdn.net/cx1110162/article/details/78297654(Maven三种archetype说明)
3.Group ID:唯一的组织或机构名,相当于package的前缀;Artifact Id:项目名;Package:包名,会自动填好
4.点击Finish之后,生成项目
5.配置pom.xml文件的包依赖,这个包一些用到的或者没用到的我也都写上去了,往后自己用到的可以自己加上去
这个是一些包的下载地址 : http://mvnrepository.com/
1 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 2 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"> 3 <modelVersion>4.0.0</modelVersion> 4 <groupId>com.maike</groupId> 5 <artifactId>SSM</artifactId> 6 <packaging>war</packaging> 7 <version>0.0.1-SNAPSHOT</version> 8 <name>SSM Maven Webapp</name> 9 <url>http://maven.apache.org</url> 10 <properties> 11 <!-- spring版本号 --> 12 <spring.version>4.0.2.RELEASE</spring.version> 13 <!-- mybatis版本号 --> 14 <mybatis.version>3.1.1</mybatis.version> 15 <!-- log4j日志文件管理包版本 --> 16 <slf4j.version>1.7.7</slf4j.version> 17 <log4j.version>1.2.17</log4j.version> 18 </properties> 19 20 <dependencies> 21 <dependency> 22 <groupId>junit</groupId> 23 <artifactId>junit</artifactId> 24 <version>4.11</version> 25 <!-- 表示开发的时候引入,发布的时候不会加载此包 --> 26 <scope>test</scope> 27 </dependency> 28 <!-- spring核心包 --> 29 <dependency> 30 <groupId>org.springframework</groupId> 31 <artifactId>spring-core</artifactId> 32 <version>${spring.version}</version> 33 </dependency> 34 35 <dependency> 36 <groupId>org.springframework</groupId> 37 <artifactId>spring-web</artifactId> 38 <version>${spring.version}</version> 39 </dependency> 40 <dependency> 41 <groupId>org.springframework</groupId> 42 <artifactId>spring-oxm</artifactId> 43 <version>${spring.version}</version> 44 </dependency> 45 <dependency> 46 <groupId>org.springframework</groupId> 47 <artifactId>spring-tx</artifactId> 48 <version>${spring.version}</version> 49 </dependency> 50 51 <dependency> 52 <groupId>org.springframework</groupId> 53 <artifactId>spring-jdbc</artifactId> 54 <version>${spring.version}</version> 55 </dependency> 56 57 <dependency> 58 <groupId>org.springframework</groupId> 59 <artifactId>spring-webmvc</artifactId> 60 <version>${spring.version}</version> 61 </dependency> 62 <dependency> 63 <groupId>org.springframework</groupId> 64 <artifactId>spring-aop</artifactId> 65 <version>${spring.version}</version> 66 </dependency> 67 68 <dependency> 69 <groupId>org.springframework</groupId> 70 <artifactId>spring-context-support</artifactId> 71 <version>${spring.version}</version> 72 </dependency> 73 74 <dependency> 75 <groupId>org.springframework</groupId> 76 <artifactId>spring-test</artifactId> 77 <version>${spring.version}</version> 78 </dependency> 79 <!-- mybatis核心包 --> 80 <dependency> 81 <groupId>org.mybatis</groupId> 82 <artifactId>mybatis</artifactId> 83 <version>${mybatis.version}</version> 84 </dependency> 85 <!-- mybatis/spring包 --> 86 <dependency> 87 <groupId>org.mybatis</groupId> 88 <artifactId>mybatis-spring</artifactId> 89 <version>1.1.0</version> 90 </dependency> 91 <!-- 导入java ee jar 包 --> 92 <dependency> 93 <groupId>javax</groupId> 94 <artifactId>javaee-api</artifactId> 95 <version>7.0</version> 96 </dependency> 97 <!-- 导入Mysql数据库链接jar包 --> 98 <dependency> 99 <groupId>mysql</groupId> 100 <artifactId>mysql-connector-java</artifactId> 101 <version>5.1.30</version> 102 </dependency> 103 <!-- 导入dbcp的jar包,用来在applicationContext.xml中配置数据库 --> 104 <dependency> 105 <groupId>commons-dbcp</groupId> 106 <artifactId>commons-dbcp</artifactId> 107 <version>1.2.2</version> 108 </dependency> 109 <!-- JSTL标签类 --> 110 <dependency> 111 <groupId>jstl</groupId> 112 <artifactId>jstl</artifactId> 113 <version>1.2</version> 114 </dependency> 115 <!-- 日志文件管理包 --> 116 <!-- log start --> 117 <dependency> 118 <groupId>log4j</groupId> 119 <artifactId>log4j</artifactId> 120 <version>${log4j.version}</version> 121 </dependency> 122 123 124 <!-- 格式化对象,方便输出日志 --> 125 <dependency> 126 <groupId>com.alibaba</groupId> 127 <artifactId>fastjson</artifactId> 128 <version>1.1.41</version> 129 </dependency> 130 131 132 <dependency> 133 <groupId>org.slf4j</groupId> 134 <artifactId>slf4j-api</artifactId> 135 <version>${slf4j.version}</version> 136 </dependency> 137 138 <dependency> 139 <groupId>org.slf4j</groupId> 140 <artifactId>slf4j-log4j12</artifactId> 141 <version>${slf4j.version}</version> 142 </dependency> 143 <!-- log end --> 144 <!-- 映入JSON --> 145 <dependency> 146 <groupId>org.codehaus.jackson</groupId> 147 <artifactId>jackson-mapper-asl</artifactId> 148 <version>1.9.13</version> 149 </dependency> 150 <!-- 上传组件包 --> 151 <dependency> 152 <groupId>commons-fileupload</groupId> 153 <artifactId>commons-fileupload</artifactId> 154 <version>1.3.1</version> 155 </dependency> 156 <dependency> 157 <groupId>commons-io</groupId> 158 <artifactId>commons-io</artifactId> 159 <version>2.4</version> 160 </dependency> 161 <dependency> 162 <groupId>commons-codec</groupId> 163 <artifactId>commons-codec</artifactId> 164 <version>1.9</version> 165 </dependency> 166 167 168 </dependencies> 169 <build> 170 <finalName>SSM</finalName> 171 </build> 172 </project>
6.创建数据库
1 CREATE TABLE nanfeng.`user` ( 2 user_id INT NOT NULL AUTO_INCREMENT, 3 user_name varchar(100) NULL, 4 user_pwd varchar(100) NULL, 5 CONSTRAINT user_pk PRIMARY KEY (user_id) 6 ) 7 ENGINE=InnoDB 8 DEFAULT CHARSET=utf8 9 COLLATE=utf8_general_ci;
7.然后把这5个文件拷贝到resource里
generatorConfiguration.xml 里的一些驱动包位置地址、数据库连接账号密码和包生成的位置需要修改成自己对应的
1 <?xml version="1.0" encoding="UTF-8"?> 2 <!DOCTYPE generatorConfiguration PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN" "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd"> 3 <generatorConfiguration> 4 <!-- 数据库驱动包位置 --> 5 <classPathEntry location="C:/Users/Administrator/.m2/repository/mysql/mysql-connector-java/5.1.30/mysql-connector-java-5.1.30.jar" /> 6 <context id="DB2Tables" targetRuntime="MyBatis3"> 7 <commentGenerator> 8 <property name="suppressAllComments" value="true" /> 9 </commentGenerator> 10 <!-- 数据库链接URL、用户名、密码 --> 11 <jdbcConnection driverClass="com.mysql.jdbc.Driver" connectionURL="jdbc:mysql://localhost:3306/nanfeng?characterEncoding=utf8" userId="root" password="zz201608"> 12 <!--<jdbcConnection driverClass="oracle.jdbc.driver.OracleDriver" connectionURL="jdbc:oracle:thin:@localhost:1521:orcl" userId="msa" password="msa">--> 13 </jdbcConnection> 14 <javaTypeResolver> 15 <property name="forceBigDecimals" value="false" /> 16 </javaTypeResolver> 17 <!-- 生成模型的包名和位置 --> 18 <javaModelGenerator targetPackage="com.maike.model" targetProject="SSM"> 19 <property name="enableSubPackages" value="true" /> 20 <property name="trimStrings" value="true" /> 21 </javaModelGenerator> 22 <!-- 生成的映射文件包名和位置 --> 23 <sqlMapGenerator targetPackage="com.maike.mapping" targetProject="SSM"> 24 <property name="enableSubPackages" value="true" /> 25 </sqlMapGenerator> 26 <!-- 生成DAO的包名和位置 --> 27 <javaClientGenerator type="XMLMAPPER" targetPackage="com.maike.dao" targetProject="SSM"> 28 <property name="enableSubPackages" value="true" /> 29 </javaClientGenerator> 30 <!-- 要生成那些表(更改tableName和domainObjectName就可以) --> 31 <table tableName="tb_firm_act" domainObjectName="FirmAct" enableCountByExample="true" enableUpdateByExample="true" enableDeleteByExample="true" enableSelectByExample="true" selectByExampleQueryId="true" /> 32 33 <table tableName="user" domainObjectName="User" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false" /> 34 35 </context> 36 </generatorConfiguration>
jdbc.properties 需要修改数据库账号密码成自己对应的
1 driver=com.mysql.jdbc.Driver 2 url=jdbc:mysql://localhost:3306/nanfeng?useUnicode=true&characterEncoding=utf-8&useSSL=false 3 username=root 4 password=zz201608 5 #定义初始连接数 6 initialSize=0 7 #定义最大连接数 8 maxActive=20 9 #定义最大空闲 10 maxIdle=20 11 #定义最小空闲 12 minIdle=1 13 #定义最长等待时间 14 maxWait=60000
log4j.properties 可不修改
1 #定义LOG输出级别 2 log4j.rootLogger=INFO,Console,File 3 #定义日志输出目的地为控制台 4 log4j.appender.Console=org.apache.log4j.ConsoleAppender 5 log4j.appender.Console.Target=System.out 6 #可以灵活地指定日志输出格式,下面一行是指定具体的格式 7 log4j.appender.Console.layout = org.apache.log4j.PatternLayout 8 log4j.appender.Console.layout.ConversionPattern=[%c] - %m%n 9 10 #文件大小到达指定尺寸的时候产生一个新的文件 11 log4j.appender.File = org.apache.log4j.RollingFileAppender 12 #指定输出目录 13 log4j.appender.File.File = logs/ssm.log 14 #定义文件最大大小 15 log4j.appender.File.MaxFileSize = 10MB 16 # 输出所以日志,如果换成DEBUG表示输出DEBUG以上级别日志 17 log4j.appender.File.Threshold = ALL 18 log4j.appender.File.layout = org.apache.log4j.PatternLayout 19 log4j.appender.File.layout.ConversionPattern =[%p] [%d{yyyy-MM-dd HH\:mm\:ss}][%c]%m%n
spring-mvc.xml 文件里base-package的地方需要修改成自己对应的
1 <?xml version="1.0" encoding="UTF-8"?> 2 <beans xmlns="http://www.springframework.org/schema/beans" 3 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p" 4 xmlns:context="http://www.springframework.org/schema/context" 5 xmlns:mvc="http://www.springframework.org/schema/mvc" 6 xsi:schemaLocation="http://www.springframework.org/schema/beans 7 http://www.springframework.org/schema/beans/spring-beans-3.1.xsd 8 http://www.springframework.org/schema/context 9 http://www.springframework.org/schema/context/spring-context-3.1.xsd 10 http://www.springframework.org/schema/mvc 11 http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd"> 12 <!-- 自动扫描该包,使SpringMVC认为包下用了@controller注解的类是控制器 --> 13 <context:component-scan base-package="com.maike.controller" /> 14 <!--避免IE执行AJAX时,返回JSON出现下载文件 --> 15 <bean id="mappingJacksonHttpMessageConverter" 16 class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter"> 17 <property name="supportedMediaTypes"> 18 <list> 19 <value>text/html;charset=UTF-8</value> 20 </list> 21 </property> 22 </bean> 23 <!-- 启动SpringMVC的注解功能,完成请求和注解POJO的映射 --> 24 <bean 25 class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"> 26 <property name="messageConverters"> 27 <list> 28 <ref bean="mappingJacksonHttpMessageConverter" /> <!-- JSON转换器 --> 29 </list> 30 </property> 31 </bean> 32 <!-- 定义跳转的文件的前后缀 ,视图模式配置--> 33 <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> 34 <!-- 这里的配置我的理解是自动给后面action的方法return的字符串加上前缀和后缀,变成一个 可用的url地址 --> 35 <property name="prefix" value="/WEB-INF/jsp/" /> 36 <property name="suffix" value=".jsp" /> 37 </bean> 38 39 <!-- 配置文件上传,如果没有使用文件上传可以不用配置,当然如果不配,那么配置文件中也不必引入上传组件包 --> 40 <bean id="multipartResolver" 41 class="org.springframework.web.multipart.commons.CommonsMultipartResolver"> 42 <!-- 默认编码 --> 43 <property name="defaultEncoding" value="utf-8" /> 44 <!-- 文件大小最大值 --> 45 <property name="maxUploadSize" value="10485760000" /> 46 <!-- 内存中的最大值 --> 47 <property name="maxInMemorySize" value="40960" /> 48 </bean> 49 50 </beans>
spring-mybatis.xml 里自动扫描处、mapping文件位置和dao文件位置需要修改成自己对应的
1 <?xml version="1.0" encoding="UTF-8"?> 2 <beans xmlns="http://www.springframework.org/schema/beans" 3 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p" 4 xmlns:context="http://www.springframework.org/schema/context" 5 xmlns:mvc="http://www.springframework.org/schema/mvc" 6 xsi:schemaLocation="http://www.springframework.org/schema/beans 7 http://www.springframework.org/schema/beans/spring-beans-3.1.xsd 8 http://www.springframework.org/schema/context 9 http://www.springframework.org/schema/context/spring-context-3.1.xsd 10 http://www.springframework.org/schema/mvc 11 http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd"> 12 <!-- 自动扫描 --> 13 <context:component-scan base-package="com.maike.*" /> 14 <!-- 引入配置文件 --> 15 <bean id="propertyConfigurer" 16 class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"> 17 <property name="location" value="classpath:jdbc.properties" /> 18 </bean> 19 20 <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" 21 destroy-method="close"> 22 <property name="driverClassName" value="${driver}" /> 23 <property name="url" value="${url}" /> 24 <property name="username" value="${username}" /> 25 <property name="password" value="${password}" /> 26 <!-- 初始化连接大小 --> 27 <property name="initialSize" value="${initialSize}"></property> 28 <!-- 连接池最大数量 --> 29 <property name="maxActive" value="${maxActive}"></property> 30 <!-- 连接池最大空闲 --> 31 <property name="maxIdle" value="${maxIdle}"></property> 32 <!-- 连接池最小空闲 --> 33 <property name="minIdle" value="${minIdle}"></property> 34 <!-- 获取连接最大等待时间 --> 35 <property name="maxWait" value="${maxWait}"></property> 36 </bean> 37 38 <!-- spring和MyBatis完美整合,不需要mybatis的配置映射文件 --> 39 <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> 40 <property name="dataSource" ref="dataSource" /> 41 <!-- 自动扫描mapping.xml文件 --> 42 <property name="mapperLocations" value="classpath:com/maike/mapping/*.xml"></property> 43 </bean> 44 45 <!-- DAO接口所在包名,Spring会自动查找其下的类 --> 46 <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> 47 <property name="basePackage" value="com.maike.dao" /> 48 <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property> 49 </bean> 50 51 <!-- (事务管理)transaction manager, use JtaTransactionManager for global tx --> 52 <bean id="transactionManager" 53 class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> 54 <property name="dataSource" ref="dataSource" /> 55 </bean> 56 57 </beans>
也把web.xml文件替换一下:
1 <?xml version="1.0" encoding="UTF-8"?> 2 <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 3 xmlns="http://java.sun.com/xml/ns/javaee" 4 xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" 5 version="3.0"> 6 <display-name>Archetype Created Web Application</display-name> 7 <!-- Spring和mybatis的配置文件 --> 8 <context-param> 9 <param-name>contextConfigLocation</param-name> 10 <param-value>classpath:spring-mybatis.xml</param-value> 11 </context-param> 12 <!-- 编码过滤器 --> 13 <filter> 14 <filter-name>encodingFilter</filter-name> 15 <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class> 16 <async-supported>true</async-supported> 17 <init-param> 18 <param-name>encoding</param-name> 19 <param-value>UTF-8</param-value> 20 </init-param> 21 </filter> 22 <filter-mapping> 23 <filter-name>encodingFilter</filter-name> 24 <url-pattern>/*</url-pattern> 25 </filter-mapping> 26 <!-- Spring监听器 --> 27 <listener> 28 <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> 29 </listener> 30 <!-- 防止Spring内存溢出监听器 --> 31 <listener> 32 <listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class> 33 </listener> 34 35 <!-- Spring MVC servlet --> 36 <servlet> 37 <servlet-name>SpringMVC</servlet-name> 38 <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> 39 <init-param> 40 <param-name>contextConfigLocation</param-name> 41 <param-value>classpath:spring-mvc.xml</param-value> 42 </init-param> 43 <load-on-startup>1</load-on-startup> 44 <async-supported>true</async-supported> 45 </servlet> 46 <servlet-mapping> 47 <servlet-name>SpringMVC</servlet-name> 48 <!-- 此处可以可以配置成*.do,对应struts的后缀习惯 --> 49 <url-pattern>/</url-pattern> 50 </servlet-mapping> 51 <welcome-file-list> 52 <welcome-file>/index.jsp</welcome-file> 53 </welcome-file-list> 54 <!-- 配置SESSION超时,单位是分钟 --> 55 <session-config> 56 <session-timeout>15</session-timeout> 57 </session-config> 58 59 </web-app>
8.然后选择 generatorConfiguration.xml 右键Run As-->Run MyBstis Generator,没有看到的话需要安装Mybatis Generator插件
之后会发现src/main/java 会自动生成有几个文件
9.将项目部署到Tomcat中,启动服务器运行,运行成功,说明配置并没说明问题,虽然没有写测试类测试,好了,搭建结束。
10.SSM功能流程:
先写实体类entity,定义对象的属性;
写Mapper.xml,其中定义你的功能,对应要对数据库进行的那些操作,比如 insert、selectByName、delete、update等;
写Mapper.java,将Mapper.xml中的操作按照id映射成Java函数;
写Service.java,为控制层提供服务,接受控制层的参数,完成相应的功能,并返回给控制层;
写Controller.java,连接页面请求和服务层,获取页面请求的参数,通过自动装配,映射不同的URL到相应的处理函数,并获取参数,对参数进行处理,之后传给服务层;
写JSP页面调用,请求哪些参数,需要获取什么数据。
简单概括为:DataBase ===> Entity ===> Mapper.xml ===> Mapper.java ===> Service.java ===> Controller.java ===> Jsp.