SSM配置模版来一套

mackyhuang
488 阅读6分钟

创建maven工程

修改servlet版本为3.1

  • 在tomcat目录下找到webapps-example->web->WEB-INF->web.xml
  • 复制一段代码到web.xml
<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"
         metadata-complete="true">
            <!--需要修改servlet版本为3.1-->
</web-app>

###修改目录结构

src
   main
      java 
      resource
      webapp
   test
      java
      resource

pom文档修改

  • junit 修改为4.11版本 3版本是编程 4是注解
  • 补全依赖
<!--补全项目依赖-->
<!--1：
        日志   slf4j log4j logback common-logging
        slf4j 是规范/接口
        剩下的是实现
        这里实现slf4j + logback
-->

<dependency>
  <groupId>org.slf4j</groupId>
  <artifactId>slf4j-api</artifactId>
  <version>1.7.12</version>
</dependency>
<dependency>
  <groupId>ch.qos.logback</groupId>
  <artifactId>logback-core</artifactId>
  <version>1.1.1</version>
</dependency>
<!--实现slf4j接口并且整合-->
<dependency>
  <groupId>ch.qos.logback</groupId>
  <artifactId>logback-classic</artifactId>
  <version>1.1.1</version>
</dependency>
		

    <!--数据库相关依赖-->
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>5.1.46</version>
      <scope>runtime</scope>
    </dependency>
    <dependency>
      <groupId>c3p0</groupId>
      <artifactId>c3p0</artifactId>
      <version>0.9.1.2</version>
    </dependency>

    <!--DAO框架 ： Mybatis-->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>3.4.5</version>
    </dependency>
    <!--这个是mybatis自己整合的与spring的依赖-->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>1.3.1</version>
    </dependency>

    <!--servlet web相关-->
    <dependency>
      <groupId>taglibs</groupId>
      <artifactId>standard</artifactId>
      <version>1.1.2</version>
    </dependency>
    <dependency>
      <groupId>jstl</groupId>
      <artifactId>jstl</artifactId>
      <version>1.2</version>
    </dependency>
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-databind</artifactId>
      <version>2.5.4</version>
    </dependency>
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>javax.servlet-api</artifactId>
      <version>3.1.0</version>
    </dependency>

    <!--Spring-->
    <!--Spring核心-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-core</artifactId>
      <version>5.0.4.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-beans</artifactId>
      <version>5.0.4.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>5.0.4.RELEASE</version>
    </dependency>
    <!--SpringDAO-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>5.0.4.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-tx</artifactId>
      <version>5.0.4.RELEASE</version>
    </dependency>
    <!--SpringWEB-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-web</artifactId>
      <version>5.0.4.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>5.0.4.RELEASE</version>
    </dependency>
    <!--SpringTEST-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-test</artifactId>
      <version>5.0.4.RELEASE</version>
    </dependency>

数据库阶段

数据库设计和创建

mybatis-confige.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getGeneratedKeys 获取数据库自增主键值-->
	        <setting name="useGeneratedKeys" value="true"/>
	        <!--使用列别名替换列名  默认true
	        select name as title from table  name(列名) title(别名)-->
	        <setting name="userColumnLabel" value="true"/>
	        <!--驼峰自动转换-->
	        <setting name="mapUnderscoreCamelCase" value="true"/>
	    </settings>
	</configuration>

DAO层编写

mapper文件映射

mybatis 和 spring 整合

  • jdbc.properties
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://127.0.0.1:3306/seckill
jdbc.username=root
jdbc.password=8023
#有个内置属性叫做username，所以这里最后都加前缀
  • 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"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:contextp="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
	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
	http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd "
>
    <!--配置数据库相关参数-->
    <!--1.加载jdbc需要的四个参数， 在properties中，可以用${driver}来取得去驱动的值-->
    <context:property-placeholder location="classpath:jdbc.properties"></context:property-placeholder>
    <!--2.数据库连接池  c3p0-->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <!--配置连接池属性-->
        <property name="driverClass" value="${jdbc.driver}"/>
        <property name="jdbcUrl" value="${jdbc.url}"/>
        <property name="user" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>
        <!--连接池的私有属性-->
        <!--最大数据连接，默认15个-->
        <property name="maxPoolSize" value="30"/>
        <!--最小数据连接，默认3个-->
        <property name="minPoolSize" value="10"/>
        <!--关闭连接后是否自动提交，默认false-->
        <property name="autoCommitOnClose" value="false"/>
        <!--默认超时为无限等待-->
        <!--<property name="checkoutTimeout" value="1000"/>-->
        <!--获取失败后重试几次-->
        <property name="acquireRetryAttempts" value="2"/>
    </bean>

    <!--配置sqlSessionFactory-->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <!--注入连接池-->
        <property name="dataSource" ref="dataSource"/>
        <!--配置mybatis全局配置文件 mybatis-config.xml -->
        <property name="configLocation" value="classpath:mybatis/mybatis-config.xml"/>
        <!--扫描entity,可以不用在mapper写全名 如果俩个就value="org.seckill.entity;org.seckill.entity1"-->
        <property name="typeAliasesPackage" value="org.seckill.entity"/>
        <!--扫描mapper文件-->
        <property name="mapperLocations" value="classpath:mapper/*.xml"/>
    </bean>

    <!--配置扫描DAO接口的包，动态实现DAO接口，并且注入到spring容器中-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <!--注入sqlSessionFactory-->
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
        <!--给出扫描DAO接口的包-->
        <property name="basePackage" value="org.seckill.dao"></property>
    </bean>
</beans>

测试

`ctrl+shift+t` 动态生成test类

进行测试

SERVICE业务层代码(这里才开始注解)

业务代码

###spring托管service依赖（Spring IOC） [外链图片转存失败,源站可能有防盗链机制,建议将图片保存下来直接上传(img-AIlcepDk-1578628614900)(i.imgur.com/Z8bbbsg.png)]

###配置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:mvc="http://www.springframework.org/schema/mvc"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:contextp="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
	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
	http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd "
>
    <!--扫描service包下的所有使用了注解的类型-->
    <context:component-scan base-package="org.seckill.service"></context:component-scan>
</beans>

事务控制

  • 发生运行时错误的时候才会回滚
  • 在spring-service.xml加入
	 	<!--配置事务管理器-->
	    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
	        <!--注入数据库连接池-->
	        <property name="dataSource" ref="dataSource"/>
	    </bean>
	
	    <!--配置基于注解的声明式事务-->
	    <tx:annotation-driven transaction-manager="transactionManager"></tx:annotation-driven>

  • @Transactional

WEB

restful接口

  • GET查询操作
  • POST添加/修改操作
  • DELETE删除
  • /模块/资源/{标示}/集合1/...
  • /user/{uid}/friends

web.xml配置

<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"
         metadata-complete="true">
          <!--需要修改servlet版本为3.1-->
    <!--配置DispatcherServlet-->
    <servlet>
        <servlet-name>dispatcher</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <!--配置SpringMVC需要的配置文件spring-dao.xml  spring-web.xml spring-service.xml-->
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:spring/spring-*.xml</param-value>
        </init-param>
    </servlet>
    <servlet-mapping>
        <servlet-name>dispatcher</servlet-name>
        <!--默认匹配所有请求-->
        <url-pattern>/</url-pattern>
    </servlet-mapping>
</web-app>

spring-web.xml配置

<?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"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:contextp="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
	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
	http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd "
>
    <!--开启注解模式-->
    <!--
        简化配置：
        自动注册DefaultAnnotationHandlerMapping AnnotationMethodHandlerAdapter
        提供一系列功能：数据绑定：数字和日期的format  NumberFormat DataTimeFormat
        xml, json默认读写
    -->
    <mvc:annotation-driven></mvc:annotation-driven>

    <!--静态资源默认servlet配置-->
    <!--
        加入对静态资源的处理 gif png js
        允许使用 / 做整体映射
    -->
    <mvc:default-servlet-handler></mvc:default-servlet-handler>

    <!--配置解析-->
    <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bean-->
    <context:component-scan base-package="org.seckill.controller"/>
</beans>

博文是作者原本在其他平台的，现迁移过来

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