文章目录
工程结构
使用maven工程,项目结构如下:
一、SSM整合
1.引入库
父工程的pom文件
<?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.mediacomm</groupId>
<artifactId>project_ssm_adminlte</artifactId>
<packaging>pom</packaging>
<version>1.0-SNAPSHOT</version>
<modules>
<module>ssm_dao</module>
<module>ssm_domain</module>
<module>ssm_service</module>
<module>ssm_utils</module>
<module>ssm_webapp</module>
</modules>
<properties>
<lombok.version>1.18.12</lombok.version>
<spring.version>5.0.2.RELEASE</spring.version>
<slf4j.version>1.6.6</slf4j.version>
<log4j.version>1.2.12</log4j.version>
<mybatis.version>3.4.5</mybatis.version>
<spring.security.version>5.0.1.RELEASE</spring.security.version>
<mysql.version>5.1.6</mysql.version>
</properties>
<dependencies>
<!--用途:为实体类的属性创建get、set和toString方法-->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>${lombok.version}</version>
<scope>provided</scope>
</dependency>
<!--用途:切入点表达式-->
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.6.8</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>${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-web</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>jsp-api</artifactId>
<version>2.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency> <!-- log start -->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>${log4j.version}</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>${slf4j.version}</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>${slf4j.version}</version>
</dependency> <!-- log end -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>${mybatis.version}</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.0</version>
</dependency>
<!--用途:数据库连接池-->
<dependency>
<groupId>c3p0</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.1.2</version>
<type>jar</type>
<scope>compile</scope>
</dependency>
<!--用途:数据库分页查询-->
<dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper</artifactId>
<version>5.1.2</version>
</dependency>
<dependency>
<groupId>javax.annotation</groupId>
<artifactId>jsr250-api</artifactId>
<version>1.0</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>jsp-api</artifactId>
<version>2.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency> <!-- log start -->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>${log4j.version}</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>${slf4j.version}</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>${slf4j.version}</version>
</dependency> <!-- log end -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>${mybatis.version}</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.0</version>
</dependency>
<dependency>
<groupId>c3p0</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.1.2</version>
<type>jar</type>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper</artifactId>
<version>5.1.2</version>
</dependency>
<dependency>
<groupId>javax.annotation</groupId>
<artifactId>jsr250-api</artifactId>
<version>1.0</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>2.9.0</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.9.0</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-annotations</artifactId>
<version>2.9.0</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${mysql.version}</version>
</dependency>
</dependencies>
</project>
2.ssm_webapp项目结构
3.配置SpringMVC
1、创建请求控制类
@Controller
@RequestMapping("/orders")
public class OrderController {
@RequestMapping("/findById.do")
public ModelAndView findOrder(@RequestParam(name = "id") String id) throws MyException{
ModelAndView mv = new ModelAndView();
try{
Order order = orderService.findOrderById(id);
mv.addObject("orders",order);
mv.setViewName("orders-desc");
}catch (Exception e){
e.printStackTrace();
throw new MyException("查询订单详情失败");
}
return mv;
}
2、在ssm_webapp中,的resource中创建SpringMVC的配置文件,如下:
<?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"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans
https://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
https://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/mvc
https://www.springframework.org/schema/mvc/spring-mvc.xsd">
<!--springmvc注解扫描-->
<context:component-scan base-package="com.mediacomm.controller">
<context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
</context:component-scan>
<!--响应视图-->
<bean id="internalResourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/pages/"></property>
<property name="suffix" value=".jsp"/>
</bean>
<!--我自定的类型转换器MVCDateConverter-->
<bean id="conversionService" class="org.springframework.context.support.ConversionServiceFactoryBean">
<property name="converters">
<array>
<bean class="com.mediacomm.converter.MVCDateConverter"></bean>
</array>
</property>
</bean>
<!--异常处理器-->
<bean id="dxceptionResolver" class="com.mediacomm.exceptionresolver.ExceptionResolver"></bean>
<!--静态资源过滤,指定哪些资源不会被springmvc的dispatcher拦截-->
<mvc:resources mapping="/js/**" location="/js/"/>
<mvc:resources mapping="/css/**" location="/css/"/>
<mvc:resources mapping="/img/**" location="/img/"/>
<mvc:resources mapping="/plugins/**" location="/plugins/"/>
<!--引入自定义类型转换器-->
<mvc:annotation-driven conversion-service="conversionService"/>
</beans>
3、在web.xml配置springmvc的dispatcer启动及加载对应的配置文件
<!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 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">
<display-name>Archetype Created Web Application</display-name>
<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>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<!--我定义的请求都是@RequestMapping("/findById.do"),所以指定拦截*.do-->
<servlet-name>dispatcherServlet</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
<!--字符过滤器-->
<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>
<init-param>
<param-name>forceEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>characterEncodingFilter</filter-name>
<url-pattern>*.do</url-pattern>
</filter-mapping>
4.配置Spring,及Mybatis整合
1、创建spring配置文件
<?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">
<!--指定注解扫描-->
<context:component-scan base-package="com.mediacomm">
<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
</context:component-scan>
<!--指定加载的配置文件-->
<context:property-placeholder location="classpath:db.properties" ></context:property-placeholder>
<!--创建数据库连接池-->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass" value="${jdbc.driver}"/>
<property name="jdbcUrl" value="${jdbc.url}"/>
<property name="user" value="${jdbc.user}"/>
<property name="password" value="${jdbc.password}"/>
</bean>
<!--mybatis提供的整合到spring中的方式,SqlSessionFactoryBean-->
<bean id="sqlSessionFactoryBean" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>
</bean>
<bean id="mapperScannerConfigurer" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.mediacomm.dao"></property>
</bean>
<bean id="dataSourceTransactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"></property>
</bean>
<!--使用通知,配置事务的控制方式-->
<tx:advice id="advice" transaction-manager="dataSourceTransactionManager">
<tx:attributes>
<tx:method name="find*" propagation="SUPPORTS" read-only="true"/>
<tx:method name="*" propagation="REQUIRED" read-only="false"/>
</tx:attributes>
</tx:advice>
<!--配置aop来控制事务-->
<aop:config>
<aop:pointcut id="pt1" expression="execution(* com.mediacomm.dao.*.*(..))"/>
<aop:advisor advice-ref="advice" pointcut-ref="pt1"/>
</aop:config>
</beans>
2、在web.xml配置spring配置文件的加载
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationSpringConfig.xml</param-value>
</context-param>
</web-app>
二、部署到tomcat
我直接发布war包到本地的tomcat服务,运行
三、测试一对多查询
1.表的关系
关系:一个订单对应多个游客信息,分别创建订单表、游客表,然后创建一个中间表,中间表中仅有两列数据,即订单id和对应的游客id
查询思路:通过订单id查询到中间表中该订单id对应的游客id,再去以游客id查询游客表的游客信息
2.订单实体类
public class Order {
private String id;
private String orderNum;
private Date orderTime;
private int peopleCount;
private String orderDesc;
private int payType;
private int orderStatus;
//对应多个游客
private List<Traveller> travellers;
3.dao接口的注解
订单的dao接口
public interface OrderDao {
@Select("select * from orders where id = #{orderId}")
@Results(id = "orderMap",value = {
@Result(id = true,column = "id",property = "id"),
@Result(column = "orderNum",property = "orderNum"),
@Result(column = "orderTime",property = "orderTime"),
@Result(column = "peopleCount",property = "peopleCount"),
@Result(column = "orderDesc",property = "orderDesc"),
@Result(column = "payType",property = "payType"),
@Result(column = "orderStatus",property = "orderStatus"),
@Result(column = "id",property = "travellers",javaType = java.util.List.class,
many = @Many(select = "com.mediacomm.dao.TravellerDao.findTravellersWithOrders",fetchType = FetchType.DEFAULT))
})
Order findOrderById(String orderId)throws MyException;
游客的dao接口
public interface TravellerDao {
@Select("SELECT tra.* from traveller tra,order_traveller ord_tra where ord_tra.orderId = #{orderId} and tra.id = ord_tra.travellerId")
List<Traveller> findTravellersWithOrders(String orderId);
}
4.测试结果
请求:http://localhost:8080/ssm_webapp_war/orders/findById.do?id=0E7231DC797C486290E8713CA3C6ECCC
显示:
部署失败遇到的问题
1.Resource的文件没有部署到tomcat
在web模块的pom文件中,引入resources标签,让maven打包时将指定的资源文件也一起打包
<build>
<finalName>ssm_webapp</finalName>
<resources>
<resource>
<directory>src/main/resource</directory>
<includes>
<include>**/**</include>
</includes>
<filtering>false</filtering>
</resource>
</resources>
2.${pageContext.request.contextPath}获取不到当前应用的路径
解决方案一:在jsp的头部声明中,加入isELIgnored=“false”,声明不忽略el表达式
如:
<%@ page language="java" contentType="text/html; charset=UTF-8" isELIgnored="false"
pageEncoding="UTF-8"%>
解决方案二:在模块的web.xml中配置,这样就全部jsp都可以生效
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">
3.jdbc连接提示驱动ClassNotFoundException
我是通过properties配置文件来设置数据库的相关信息的,结果发现是因为properties文件中的值加的双引号,如下:
jdbc.driver=“com.mysql.jdbc.Driver”
小小的问题找了老半天,特此记录一下,用等于赋值就不用加引号!!囧