SSM练习--CURD之jar包导入及配置文件
1.新建maven项目,在pom.xml下添加需要导入的包:来源:http://mvnrepository.com/
1.1 spring和springmvc:
spring-webmvc,spring-jdbc,spring-aspects,aspectjweaver,
2.1 mybatis:
mybatis,mybatis-generator(逆向工程)
3.1 mybatis整合spring
myybatis-spring
4.1 数据库连接池和驱动
c3p0,mchange-commons-java,mysql
5.1 其他包
jstl,servlet-api,junit
6.1 分页插件
pagehelper
7.1 jackson
jackson-databind
8.1 JSR303校验
hibernate-validator
2.src/main/webapp/WEB-INF/web.xml的配置
2.1 启动Spring容器:ContextLoaderListener
<?xml version="1.0" encoding="UTF-8"?> <web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
<context-param> <param-name>contextConfigLocation</param-name>
<!--spring文件位置--> <param-value>classpath:applicationContext.xml</param-value> </context-param> <!--负责启动spring容器的监听器,获得spring配置文件地址--> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener>
2.2 SpringMVC前端控制器:DispatcherServlet
<servlet> <servlet-name>dispatch</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <!-- 未指定SpringMVC的配置文件,所以在与web同级文件下建立一个与servlet-name同名+servlet的xml文件 --> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:dispatch-servlet.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>dispatch</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping>
2.3 字符编码,需放在所有过滤器的前面
<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> <init-param> <param-name>forceRequestEncoding</param-name> <param-value>true</param-value> </init-param> <init-param> <param-name>forceResponseEncoding</param-name> <param-value>true</param-value> </init-param> </filter> <filter-mapping> <filter-name>CharacterEncodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping>
2.4使用REST风格的URI,请求转换:HiddenHttpMethodFilter
<filter> <filter-name>HiddenHttpMethodFilter</filter-name> <filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class>
</filter> <filter-mapping> <filter-name>HiddenHttpMethodFilter</filter-name> <!-- 过滤所有请求 --> <url-pattern>/*</url-pattern> </filter-mapping>
2.5 使页面ajax成功发put请求
在Spring MVC过滤器-HiddenHttpMethodFilter中我们提到,
jsp或者说html中的form的method值只能为post或get,我们可以通过HiddenHttpMethodFilter获取put表单中的参数-值,
而在Spring3.0中获取put表单的参数-值还有另一种方法,即使用HttpPutFormContentFilter过滤器。
HttpPutFormContentFilter过滤器的作为就是获取put表单的值,并将之传递到Controller中标注了method为RequestMethod.put的方法中。
<filter> <filter-name>HttpPutFormContentFilter</filter-name> <filter-class>org.springframework.web.filter.HttpPutFormContentFilter</filter-class> </filter> <filter-mapping> <filter-name>HttpPutFormContentFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> </web-app>
3.Spring的配置文件applicationContext.xml
3.1 配置文件添加的约束
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.3.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd">
3.2 外部配置的数据库文件 dbconfig.properties
jdbc.jdbcUrl=jdbc:mysql://localhost:3306/ssm jdbc.jdbcdriverClass=com.mysql.jdbc.Driver jdbc.user=root jdbc.password=123
3.3 扫描包,设置不扫描控制器,因为在SpringMVC中会配置扫描
<!-- 扫描包 --> <context:component-scan base-package="com.ssm"> <!-- 不扫描@Controller注解 --> <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller" /> </context:component-scan> <!-- 引入外部配置文件 --> <context:property-placeholder location="classpath:dbconfig.properties"/>
3.4 数据源
<bean id="pooledDataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"> <property name="jdbcUrl" value="${jdbc.jdbcUrl}"></property> <property name="driverClass" value="${jdbc.jdbcdriverClass}"></property> <property name="user" value="${jdbc.user}"></property> <property name="password" value="${jdbc.password}"></property> </bean>
3.5 与mybatis的整合
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <!-- 指定Mybatis全局配置文件的位置 --> <!-- 加载mybatis的配置文件 --> <property name="configLocation" value="classpath:mybatis-config.xml"></property> <!-- 配置数据源 --> <property name="dataSource" ref="pooledDataSource"></property> <!-- 指定mybatis.mapper文件的位置 --> <property name="mapperLocations" value="classpath:mapper/*.xml"></property> </bean> <!-- 配置扫描器,将mybatis接口的实现加入到ioc容器中 --> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <!-- 扫描所有dao接口的实现,加入到ioc容器 --> <property name="basePackage" value="com.ssm.dao"></property> </bean>
3.5 事务控制
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <!-- 控制数据源 --> <property name="dataSource" ref="pooledDataSource"></property>
</bean> <!-- 开启使用xml配置形式的事务 --> <aop:config> <!-- 切入点表达式 --> <aop:pointcut expression="execution(* com.ssm.service.*.*(..))" id="txPoint"/> <!-- 配置事务增强 --> <aop:advisor advice-ref="txAdvice" pointcut-ref="txPoint"/> </aop:config>
3.6配置事务增强,事务如何切入
<tx:advice id="txAdvice" transaction-manager="transactionManager"> <tx:attributes> <!-- 所有方法都是事务方法 --> <tx:method name="*"></tx:method> <!--以get开头的所有方法,设置只读--> <tx:method name="get*" read-only="true"></tx:method> </tx:attributes> </tx:advice>
4. SpringMVC的配置dispath-servlet.xml
4.1 扫描包
<context:component-scan base-package="com.ssm" use-default-filters="false"> <!-- 扫描@Controller注解 不扫描用exclude --> <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller" /> </context:component-scan>
4.2 配置视图解析器
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <!-- spring中加入jstl标签库 --> <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"></property> <!-- 前缀 --> <property name="prefix" value="/WEB-INF/views/"></property> <!-- 后缀 --> <property name="suffix" value=".jsp"></property> </bean>
4.3 SpringMVC两个标准配置
<mvc:default-servlet-handler></mvc:default-servlet-handler> <mvc:annotation-driven> </mvc:annotation-driven>
5.Mybatis配置文件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> <!-- 开启自动驼峰命名规则(camel case)映射, 即从经典数据库列名 A_COLUMN 到经典 Java 属性名 aColumn 的类似映射。 --> <settings> <setting name="mapUnderscoreToCamelCase" value="true" /> </settings> <!-- 类型别名 自定义别名name为类所在的包路径--> <typeAliases> <package name="com.ssm.bean"></package> </typeAliases> <!-- 分页的配置 --> <plugins> <!-- com.github.pagehelper为PageHelper类所在包名 --> <plugin interceptor="com.github.pagehelper.PageInterceptor"> <!-- 调整分页合理化 --> <property name="reasonable" value="true"/> </plugin> </plugins> </configuration>