SSM-1-项目搭建
想要搭建一个SSM的JavaWeb项目就需要使用宇宙无敌编辑器————Idea!!!
- 使用idea的有点有很多,包括但不限于
- 使用maven创建项目,以后再无手动导包
- 各种提示应有尽有
- 适配以前的快捷键(比如Eclipse,这就是我不喜欢vs的原因,快捷键用习惯了改一下简直要命!!!)
- 插件多安装方便
开始使用idea搭建maven的SSM项目:(依照配置难易程度)
1 不需要改,复制进去就行:
- log4j.properties(日志配置文件)
- jquery-3.4.1.min.js(前端配置文件)
2 需要改的部分只要复制粘贴:
- pron.xml(依赖)
- jdbc.properties(连接数据库的信息,如账户、密码)
3 只需要简单配置
- mybatis-config.xml(数据库框架配置,因为有spring所以只需要简单配置)
- spring-mvc.xml(SpringMVC的配置,组件扫描、视图解析器、静态资源释放两件套)
- Mapper.xml(写臭sql的)
4 复杂配置
- applictionContext.xml(spring润滑油,用了都说好)
- web.xml(核心控制器、ioc容器监听器、字符集编码过滤器、REST风格请求转换过滤器)
pron.xml加入各种依赖:
这就是不用导包的里有,在pron.xml配好就不需要导包了
<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>
<mybatis.version>3.4.5</mybatis.version>
<lombok.verson>1.18.12</lombok.verson>
<mysql.version>8.0.16</mysql.version>
<springframework.version>4.2.6.RELEASE</springframework.version>
</properties>
<dependencies>
<!-- mybatis begin -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>${mybatis.version}</version>
</dependency>
<!-- mybatis end -->
<!-- mybatis-spring begin -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.0</version>
</dependency>
<!-- mybatis-spring end -->
<!-- jdbc begin -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${mysql.version}</version>
</dependency>
<!-- jdbc end -->
<!-- springframework begin -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${springframework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${springframework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>${springframework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-expression</artifactId>
<version>${springframework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${springframework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>${springframework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${springframework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${springframework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${springframework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>${springframework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>${springframework.version}</version>
</dependency>
<!-- springframework end -->
<!-- commons logging -->
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>1.1.1</version>
</dependency>
<!-- commons logging -->
<!-- Servlet begin -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.0.1</version>
</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>
<!-- Servlet end -->
<!-- JSON begin -->
<!-- fastjson -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.30</version>
</dependency>
<!-- fastjson -->
<!--jackson-->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>2.8.1</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.8.1</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-annotations</artifactId>
<version>2.8.1</version>
</dependency>
<!--jackson-->
<!--gson-->
<dependency>
<groupId>com.google.code.gson</groupId>
<artifactId>gson</artifactId>
<version>2.2.4</version>
</dependency>
<!--gson-->
<!-- JSON end -->
<!-- fileupload begin -->
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.3</version>
</dependency>
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.4</version>
</dependency>
<!-- fileupload end -->
<!-- c3p0 begin -->
<dependency>
<groupId>com.mchange</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.5.2</version>
</dependency>
<!-- c3p0 end -->
<!-- aspect begin -->
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjrt</artifactId>
<version>1.7.3</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.7.3</version>
</dependency>
<!-- aspect end -->
<!-- cglib begin -->
<dependency>
<groupId>cglib</groupId>
<artifactId>cglib</artifactId>
<version>2.2.2</version>
</dependency>
<!-- cglib end -->
<!-- lombok begin -->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>${lombok.verson}</version>
<scope>provided</scope>
</dependency>
<!-- lombok end -->
<!-- junit begin -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<scope>test</scope>
</dependency>
<!-- junit end -->
<!-- log4j begin -->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.12</version>
</dependency>
<!-- log4j end -->
</dependencies>
这段复制进pron.xml中并替代原有的properties和dependencies标签一次性搞定一堆jar包。
-
log4j
-
junit
-
lombok
-
cglib
-
aspect
-
c3p0
-
fileupload
-
JSON
-
Servlet
-
logging
-
springframework
-
jdbc
-
mybatis-spring
-
mybatis
jdbc.properties的配置:
mysql.driverClass=com.mysql.cj.jdbc.Driver
mysql.jdbcUrl=jdbc:mysql://localhost:3306/edocdb?serverTimezone=GMT%2B8&useUnicode=true&characterEncoding=UTF-8
mysql.user=root
mysql.password=root
-
driverClass:数据库驱动,可以用来区分不同种类的数据库,不同的数据库操作不一样,导致驱动不一样
-
jdbcUrl:数据库连接url,数据库发布的ip及端口,这里为本地3306端口发布
-
user:数据库账户
-
password:数据库密码(千万别忘!!!)
mybatis-config.xml的配置:
<?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>
<!-- 核心配置settings -->
<settings>
<!-- 是否开启下划线到驼峰命名自动映射,默认是关闭的false -->
<setting name="mapUnderscoreToCamelCase" value="true"/>
</settings>
</configuration>
90%的内容都在spring中配置完了,所以就剩个setting可以配了。具体可以配置那些,可以在这个网站中找到。
mybatis – MyBatis 3 | 配置:https://mybatis.org/mybatis-3/zh/configuration.html#settings
Mapper.xml的匹配:
<?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="接口全类名">
</mapper>
spring-mvc.xml的配置:
只要配四个:
- 组件扫描:只扫描controller组件
- 视图解析器
- 静态资源释放
- 注解扫描
<?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: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/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/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">
<!-- 组件扫描,只需要扫描controller -->
<context:component-scan base-package="com.yuyi.ssm" use-default-filters="false">
<context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
</context:component-scan>
<!-- 视图解析器 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/views/"/>
<property name="suffix" value=".jsp"/>
</bean>
<!-- springmvc标配:静态资源释放和开启新组建注解 -->
<mvc:default-servlet-handler/>
<mvc:annotation-driven/>
</beans>
applictionContext的配置:
-
组件扫描,排除controller组件
-
C3P0数据源
-
通过spring整合mybatis
-
SqlSession对象的创建和管理(交给spring),借助工厂bean
-
Mapper接口的代理实现类对象,创建和管理(交给spring,放到IOC容器中)
-
<?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"
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">
<!-- 组件扫描,排除controller组件,将其他所有组件加入容器 -->
<context:component-scan base-package="com.yuyi.ssm">
<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
</context:component-scan>
<!-- C3P0数据源 -->
<context:property-placeholder location="classpath:jdbc.properties"/>
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass" value="${mysql.driverClass}"/>
<property name="jdbcUrl" value="${mysql.jdbcUrl}"/>
<property name="user" value="${mysql.user}"/>
<property name="password" value="${mysql.password}"/>
</bean>
<!-- 通过spring整合mybatis -->
<!-- 1.SqlSession对象的创建和管理(交给spring),借助工厂bean -->
<bean class="org.mybatis.spring.SqlSessionFactoryBean">
<!-- 数据源配置 -->
<property name="dataSource" ref="dataSource"/>
<!-- 加载全局配置文件 -->
<property name="configLocation" value="classpath:mybatis-config.xml"/>
<!-- 加载SQL映射文件,默认是同名同路径的,现在可以自定义路径 -->
<property name="mapperLocations" value="classpath:mapper/*.xml"/>
<!-- 别名处理 -->
<property name="typeAliasesPackage" value="com.yuyi.ssm.beans"/>
</bean>
<!-- 2.Mapper接口的代理实现类对象,创建和管理(交给spring,放到IOC容器中)
以前mybatis:在单元测试通过sqlsession.getMapper(xxxMapper.class)方法
现在:MapperScannerConfigurer,自动为指定的包下的mapper接口创建代理实现类对象并放入ioc容器中
比如:NewsDetailMapper → 代理实现类对象 → IOC容器中,在容器中对应的id值:newsDetailMapper
-->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.yuyi.ssm.mapper"/>
</bean>
</beans>
web.xml的配置:
- 前端核心控制器
- 配置初始化spring的ioc容器监听器
- 字符集编码过滤器
- 字符集编码过滤器
- REST风格请求转换过滤器
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.1"
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">
<!-- 前端核心控制器 -->
<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:spring-mvc.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>dispatcherServlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!-- 配置初始化spring的ioc容器监听器 -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applictionContext.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- 字符集编码过滤器 -->
<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>
<!-- REST风格请求转换过滤器 -->
<filter>
<filter-name>hiddenHttpMethodFilter</filter-name>
<filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>hiddenHttpMethodFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>
文件树:
所有配置就弄完了
Q.E.D.