SSM超详细搭建教程(Spring+SpringMVC+Mybatis)以及集成Redis和Druid
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这个教程主要包括以下部分:
1,基础SSM(Spring+SpringMVC+Mybatis)搭建教程
2,集成Redis
3,Redis Sentinel高可用方案(基于docker)
4,Druid
该教程写完可以当作一个脚手架以后直接使用,很方便,同时会讲解一下缓存方案,为下面搭建一个分布式高可用的系统先做点铺垫,源码以及全部上传到git上面,https://github.com/wacxt/pretty_ssm ,下面开始
(1)首先是项目结构和架构图:
(2)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>pretty_ssm</groupId> <artifactId>pretty_ssm</artifactId> <packaging>war</packaging> <version>0.0.1-SNAPSHOT</version> <name>pretty_ssm Maven Webapp</name> <url>http://maven.apache.org</url> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <maven.build.timestamp.format>yyyyMMdd</maven.build.timestamp.format> <spring.version>4.2.0.RELEASE</spring.version> </properties> <dependencies> <!--common start --> <dependency> <groupId>com.google.guava</groupId> <artifactId>guava</artifactId> <version>18.0</version> </dependency> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>1.2.17</version> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-api</artifactId> <version>1.7.5</version> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-log4j12</artifactId> <version>1.7.5</version> </dependency> <dependency> <groupId>org.apache.commons</groupId> <artifactId>commons-lang3</artifactId> <version>3.3.2</version> </dependency> <dependency> <groupId>commons-io</groupId> <artifactId>commons-io</artifactId> <version>2.4</version> </dependency> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.12</version> </dependency> <dependency> <groupId>commons-collections</groupId> <artifactId>commons-collections</artifactId> <version>3.2.1</version> </dependency> <dependency> <groupId>org.quartz-scheduler</groupId> <artifactId>quartz</artifactId> <version>1.8.5</version> </dependency> <dependency> <groupId>com.alibaba</groupId> <artifactId>fastjson</artifactId> <version>1.2.8</version> </dependency> <dependency> <groupId>org.hibernate</groupId> <artifactId>hibernate-validator</artifactId> <version>4.2.0.Final</version> </dependency> <!--common end --> <!--spring start --> <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>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-aspects</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-expression</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-test</artifactId> <version>${spring.version}</version> </dependency> <!--spring end --> <!--springmvc 控制层 start --> <dependency> <groupId>jstl</groupId> <artifactId>jstl</artifactId> <version>1.2</version> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <version>3.1.0</version> </dependency> <dependency> <groupId>taglibs</groupId> <artifactId>standard</artifactId> <version>1.1.2</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-web</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-databind</artifactId> <version>2.7.4</version> </dependency> <!--springmvc end --> <!--mybatis 数据访问层 start --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.38</version> <scope>runtime</scope> </dependency> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version>1.0.20</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>3.4.0</version> </dependency> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version>1.3.0</version> </dependency> <dependency> <groupId>redis.clients</groupId> <artifactId>jedis</artifactId> <version>2.8.0</version> </dependency> <dependency> <groupId>org.springframework.data</groupId> <artifactId>spring-data-redis</artifactId> <version>1.6.4.RELEASE</version> </dependency> <dependency> <groupId>com.dyuproject.protostuff</groupId> <artifactId>protostuff-core</artifactId> <version>1.0.8</version> </dependency> <dependency> <groupId>com.dyuproject.protostuff</groupId> <artifactId>protostuff-runtime</artifactId> <version>1.0.8</version> </dependency> <!--mybatis 数据访问层 end --> </dependencies> <!-- Build Settings --> <!--http://maven.apache.org/pom.html#Build_Settings --> <build> <finalName>${project.artifactId}_${project.version}_${maven.build.timestamp}</finalName> <resources> <resource> <!--directory: 资源所在的位置 --> <directory>src/main/resources</directory> <!--filtering: 是否替换资源中的属性placehold --> <filtering>true</filtering> </resource> </resources> <plugins> <plugin> <artifactId>maven-compiler-plugin</artifactId> <version>2.3.2</version> <configuration> <source>1.8</source> <target>1.8</target> </configuration> </plugin> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-war-plugin</artifactId> <version>2.6</version> </plugin> </plugins> </build></project>
(3)web.xml
<?xml version="1.0" encoding="UTF-8"?><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"> <!--配置DispatcherServlet --> <servlet> <servlet-name>spring-dispatcher</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <!-- 配置SpringMVC需要加载的配置文件 spring-xxx.xml --> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:spring/spring-*.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>spring-dispatcher</servlet-name> <!--默认匹配所有的请求 --> <url-pattern>/</url-pattern> </servlet-mapping> <!-- druid --> <servlet> <servlet-name>DruidStatView</servlet-name> <servlet-class>com.alibaba.druid.support.http.StatViewServlet</servlet-class> </servlet> <servlet-mapping> <servlet-name>DruidStatView</servlet-name> <url-pattern>/druid/*</url-pattern> </servlet-mapping> <filter> <filter-name>DruidWebStatFilter</filter-name> <filter-class>com.alibaba.druid.support.http.WebStatFilter</filter-class> <init-param> <param-name>exclusions</param-name> <param-value>*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*</param-value> </init-param> </filter> <filter-mapping> <filter-name>DruidWebStatFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping></web-app>
上面主要配置了DispatcherServlet,这是非常重要的,还有配置了Druid,以后我们就可以通过访问:youurl+/druid看到一些监控数据了。
(4)接下来我们就要在spring文件夹里面配置了,先配置spring-dao.xml文件,这里主要配置:数据库连接参数,连接池,SqlSessionFactory对象(mybatis),扫描dao层接口,动态实现dao接口
spring-dao.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" 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"> <!--配置整合mybatis过程--> <!--1、配置数据库相关参数--> <context:property-placeholder location="classpath:jdbc.properties" ignore-unresolvable="true"/> <!--2.数据源druid --> <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close"> <property name="driverClassName" value="${jdbc.driverClassName}" /> <property name="url" value="${jdbc.url}" /> <property name="username" value="${jdbc.username}" /> <property name="password" value="${jdbc.password}" /> <!-- 配置初始化大小、最小、最大 --> <property name="initialSize" value="${druid.pool.size.init}" /> <property name="minIdle" value="${druid.pool.size.min}" /> <property name="maxActive" value="${druid.pool.size.max}" /> <!-- 配置监控统计拦截的filters,wall用于防止sql注入,stat用于统计分析 --> <property name="filters" value="wall,stat" /> </bean> <!--3、配置SqlSessionFactory对象--> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <!--注入数据库连接池--> <property name="dataSource" ref="dataSource"/> <!--配置mybatis全局配置文件:mybatis-config.xml--> <property name="configLocation" value="classpath:mybatis-config.xml"/> <!--扫描entity包,使用别名,多个用;隔开--> <property name="typeAliasesPackage" value="com.pretty.ssm.entity"/> <!--扫描sql配置文件:mapper需要的xml文件--> <property name="mapperLocations" value="classpath:mapper/*.xml"/> </bean> <!--4、配置扫描Dao接口包,动态实现DAO接口,注入到spring容器--> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <!--注入SqlSessionFactory--> <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/> <!-- 给出需要扫描的Dao接口--> <property name="basePackage" value="com.pretty.ssm.dao"/> </bean></beans>
这里千万别忘记配置一下jdbc.properties
jdbc.driverClassName=com.mysql.jdbc.Driverjdbc.url=jdbc:mysql://127.0.0.1:3306/pretty_ssm?useUnicode=true&characterEncoding=UTF-8&useSSL=falsejdbc.username=rootjdbc.password=shaoqingdruid.pool.size.max=20druid.pool.size.min=3druid.pool.size.init=3
上面useSSL=false一定要下,或者true,如果你用的是mysql高版本
接下来是另外一个套餐,mybatis-config.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> <!--配置全局属性--> <settings> <!--使用jdbc的getGeneratekeys获取自增主键值--> <setting name="useGeneratedKeys" value="true"/> <!--使用列别名替换别名 默认true--> <setting name="useColumnLabel" value="true"/> <!--开启驼峰命名转换Table:create_time到 Entity(createTime)--> <setting name="mapUnderscoreToCamelCase" value="true"/> </settings></configuration>
(5)配置完了DAO层,接下来就是service层了。在spring中新建spring-service.xml文件。需要的工作有:扫描service包所有注解 @Service;配置事务管理器,把事务管理交由spring来完成;配置基于注解的声明式事务,可以直接在方法上@Transaction
spring-service.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:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" 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/aop http://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd"> <!--扫描service包(包含子包)下所有使用注解的类型--> <context:component-scan base-package="com.pretty.ssm.service"/> <!--配置事务管理器(mybatis采用的是JDBC的事务管理器)--> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource"></property> </bean> <!--配置基于注解的声明式事务,默认使用注解来管理事务行为--> <tx:annotation-driven transaction-manager="transactionManager"/></beans>
(6)配置web层,在spring文件夹新建spring-web.xml,需要的工作有:开启SpringMVC注解模式,可以使用@RequestMapping,@PathVariable,@ResponseBody等;对静态资源处理,如js,css,jpg等;配置jsp 显示ViewResolver;扫描web层 @Controller
spring-web.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" 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/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd"> <!-- 激活组件扫描功能,扫描aop的相关组件组件 --> <context:component-scan base-package="com.pretty.ssm.aop"/> <!-- 启动对@AspectJ注解的支持 --> <aop:aspectj-autoproxy proxy-target-class="true" /> <!--简化配置: 1、自动注册DefaultAnnotationHandlerMapping,AnnotationMethodHandlerAdapter 2、提供一系列:数据绑定,数字和日期的format,@NumberFormat,@DataTimeFormat,xml,json默认读写支持 --> <mvc:annotation-driven/> <!--静态资源默认servlet配置 1、加入对静态资源的处理:js,css,gif,png 2、允许使用"/"做整体映射 --> <mvc:default-servlet-handler/> <!--配置JSP 显示ViewResolver--> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/> <property name="prefix" value="/WEB-INF/jsp/"/> <property name="suffix" value=".jsp"/> </bean> <!--扫描web相关的controller--> <context:component-scan base-package="com.pretty.ssm.web"/></beans>
(7)接下来来做个小实例
首先新建一个数据库,命名为pretty_ssm,然后导入sql文件夹下面的sql文件,接着在entity层下面添加一个实体User,然后在dao层下面新建一个UserDao接口,接着在mapper文件夹下面新建UserDao.xml,编程相关的sql语句。然后在service层新建UserService接口以及实现类了,这些相关代码我都放在git(实例代码)上面了,可以借鉴着写,喜欢记得给个星。
接下来就是验证的时刻了,访问http://localhost:8080/yourproject/user/list,如果能正常启动并且看到json数据,那么说明配置完成。
跑不起来的看这里
注意:如果本地没有安装redis的,个人建议安装,这确实是个好东西,如果实在不想安装,那么就不要导入spring-redis.xml,UserServiceImpl文件中的getUserList中,去掉跟redis相关的代码。
(8)这个项目只是想当作一个脚手架,以后需要可以直接使用,而且是为了后面搭建一个高可用的分布式架构做准备,所以这里牵扯到了redis,接下来将讲解redis缓存和redis sentinel高可用方案,而且是基于docker来实现
最后再放一下代码地址,以防有些人找不到
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