目录
前言
SSM整合可以使用多种方式,咱们选择XML + 注解的方式,不要觉得不妥,这样其实最便捷-
提示:以下是本篇文章正文内容,下面案例可供参考
1.新建项目
1.1:使用Macenwebapp \Rightarrow webapp
1.2:导入项目依赖(pom.xml), <build>由创建自动生成
<?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.Lsy</groupId>
<artifactId>ssm</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>war</packaging>
<name>ssm 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>
</properties>
<dependencies>
<!--用来实现单元测试的jar包-->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<scope>test</scope>
</dependency>
<!-- java连接mysql的jar包 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.13</version>
</dependency>
<!-- servlet-api的jar包 -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
<scope>provided</scope>
</dependency>
<!-- 使用jsp得使用的jar包 -->
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>javax.servlet.jsp-api</artifactId>
<version>2.2.1</version>
<scope>provided</scope>
</dependency>
<!-- 给springmvc返回json数据做准备的 -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.47</version>
</dependency>
<!-- 想要用el表达式得有这个jar包 -->
<dependency>
<groupId>taglibs</groupId>
<artifactId>standard</artifactId>
<version>1.1.2</version>
</dependency>
<!-- jstl得jar包 -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.1.2</version>
</dependency>
<!-- 简化实体类代码 -->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.16.22</version>
</dependency>
<!-- spring连接数据源需要使用得jar包 -->
<dependency>
<groupId>commons-dbcp</groupId>
<artifactId>commons-dbcp</artifactId>
<version>1.4</version>
</dependency>
<!-- mybatis使用得jar包 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.4.6</version>
</dependency>
<!-- spring切面技术需要用到得jar -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>5.1.3.RELEASE</version>
</dependency>
<!-- 提供切面支持得 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
<version>5.1.3.RELEASE</version>
</dependency>
<!-- spring-beans -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>5.1.3.RELEASE</version>
</dependency>
<!-- spring得上下文运行环境 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>5.1.3.RELEASE</version>
</dependency>
<!-- 给spring运行环境提供支持得包 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>5.1.3.RELEASE</version>
</dependency>
<!-- spring核心工具 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>5.1.3.RELEASE</version>
</dependency>
<!-- spring表达式 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-expression</artifactId>
<version>5.1.3.RELEASE</version>
</dependency>
<!-- spring-jdbc连接数据库得 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>5.1.3.RELEASE</version>
</dependency>
<!-- spring提供得事务管理器 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>5.1.3.RELEASE</version>
</dependency>
<!-- springmvc得开发web必须得包 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>5.1.3.RELEASE</version>
</dependency>
<!-- 提供springmvc web支持得包 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>5.1.3.RELEASE</version>
</dependency>
<!-- mybatis整合spring必须得包 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.2</version>
</dependency>
<!-- 日志 -->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
<!-- https://mvnrepository.com/artifact/aopalliance/aopalliance -->
<dependency>
<groupId>aopalliance</groupId>
<artifactId>aopalliance</artifactId>
<version>1.0</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.aspectj/aspectjweaver -->
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.8.13</version>
</dependency>
<dependency>
<groupId>org.testng</groupId>
<artifactId>testng</artifactId>
<version>RELEASE</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpmime</artifactId>
<version>4.3.2</version>
</dependency>
<!--用来实现mybatis分页的代码-->
<dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper</artifactId>
<version>5.1.2</version>
</dependency>
<!--hutool工具类-->
<dependency>
<groupId>cn.hutool</groupId>
<artifactId>hutool-all</artifactId>
<version>5.3.6</version>
</dependency>
</dependencies>
<build>
<finalName>ssm</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>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>8</source>
<target>8</target>
</configuration>
</plugin>
</plugins>
</build>
</project>
2.新建项目的文件夹
手动创建(java、resources),以及子包entity,mapper. . 具体如下
3.从web.xml入手
注意事项:
3.1:加载spring.xml文件
3.2:乱码过滤器
3.3:监听器,加载spring的配置文件,applicationContext.xml,如果没有配置监听器,那么spring的配置文件只能放在webapp包下
3.4:加载springmvc.xml文件(优先加载)
下面是webxml文件代码:
<!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>
<display-name>Archetype Created Web Application</display-name>
<!--先配置spring (优先加载)-->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath*:applicationContext.xml</param-value>
</context-param>
<!--配置过滤器,解决POST乱码问题-->
<filter>
<filter-name>characterEncodingFilter</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>characterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!--配置监听器:监听整个web项目的文件以及内容变化-->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!--配置SpringMVC分发器,拦截所有请求-->
<servlet>
<servlet-name>dispatcherServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath*:springmvc.xml</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>dispatcherServlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!--<!– 设置默认的访问首页 –>-->
<!--<welcome-file-list>-->
<!--<welcome-file>/selAll</welcome-file>-->
<!--</welcome-file-list>-->
</web-app>
4.配置applicationContext.xml文件
4.1:配置数据源
4.2:配置sqlsessionFactoryBean(数据源, mapper.xml位置, mybaits配置文件的位置,别名)
4.3:扫描Mapper接口(@Mapper)
4.4:扫描dao以及service的包
代码报错也可能是顺序的问题,这里也得注意一下
<?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">
<!--1.引用数据源的属性文件-->
<!--
读取 db.properties 中的内容
property-placeholder: 占位符
location: 属性文件的位置
-->
<!--<context:property-placeholder location="classpath:db.properties"/>-->
<bean id="propertyPlaceholderConfigurer"
class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="locations" value="classpath:db.properties"></property>
</bean>
<!--2.配置数据源-->
<!--获得数据库连接池对象,并交由 spring 统一管理 -->
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
<property name="driverClassName" value="${driverClassName}"></property>
<property name="url" value="${url}"></property>
<property name="username" value="${username}"></property>
<property name="password" value="${password}"></property>
</bean>
<!--3.通过数据源获取SqlSessionFactory对象-->
<!--创建对象的过程都要交给spring的ioc进行管理-->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<!--指定sqlSessionFactory引用的数据源-->
<property name="dataSource" ref="dataSource"></property>
<!--<property name="typeAliasesPackage" value="com.changan.entity"></property>-->
<!--指定mapper.xml的位置-->
<property name="mapperLocations" value="classpath:/mapper/*Mapper.xml"></property>
<!--别名-->
<property name="typeAliasesPackage" value="com.Lsy.entity"></property>
<!--mybatis的配置也需要交给spring容器进行管理-->
<property name="configLocation" value="classpath:mybatis-config.xml"></property>
</bean>
<!--4.扫描所有的mapper并且注入到ioc容器-->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.Lsy.mapper"></property>
</bean>
<!--5.扫包 扫描所有的注解-->
<context:component-scan base-package="com.Lsy.mapper,com.Lsy.service"></context:component-scan>
</beans>
里面用到一个db.properties配置数据库连接属性的文件…代码奉上:
driverClassName=com.mysql.cj.jdbc.Driver
url=jdbc:mysql://localhost:3306/mybatis?characterEncoding=UTF-8&useUnicode=true&serverTimezone=GMT%2B8
username=root
password=root
5.配置springmvc.xml文件
5.1:扫包
5.2:注解驱动(能够让程序识别springmvc的注解@RequestMapping() )
5.3:视图解析器
细心的同学可以发现pringmvc.xml文件里面的扫包applicationContext.xml文件里面也有,其实两者取一即可,但是也不会冲突,这里做个小提醒
<?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"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd">
<!--1.扫包-->
<context:component-scan base-package="com.Lsy.controller"></context:component-scan>
<!--2.注解驱动-->
<mvc:annotation-driven></mvc:annotation-driven>
<!--3.视图解析器-->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/"></property>
<property name="suffix" value=".jsp"></property>
</bean>
</beans>
6.总结
以上是SSM完整配置文件,往后就可以直接写dao层,service……整个配置文件下来的确是挺繁琐,感兴趣的同学可以往后深入研究,以后的springboot相对来说就减去了大部分繁琐的流程,OK ,能够坚持到这里的各位都是人才,说话又好听,敲的代码又好看,我超喜欢你们,所以,我要是哪里写错了,欢迎指出,还望不吝赐教!!!
7.源码、源码、源码~
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