开始SSM(Spring5MVC/Spring5/Mybatis)分拆工程-前后端分离–超详细步骤
创建父工程:
1. 打包方式选择packaging->pom 【pom包】
2. Maven创建时可以选择骨架site或者site-simple骨架 , 建议最好不用骨架
3. 导入pom.xml坐标 (子工程可以继承父工程的坐标) 子模块需要的依赖jar包
pom.xml 设置–>
<?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.javaee.maven</groupId>
<artifactId>SSM_parent</artifactId>
<!--父工程打包方式 pom-->
<packaging>pom</packaging>
<version>1.0-SNAPSHOT</version>
<!--当前父工程下有哪些子模块-有哪些子工程-->
<modules>
<module>SSM_dao</module>
<module>SSM_service</module>
<module>SSM_web</module>
</modules>
<properties>
<spring.version>5.0.2.RELEASE</spring.version>
<slf4j.version>1.6.6</slf4j.version>
<log4j.version>1.2.12</log4j.version>
<mysql.version>5.1.6</mysql.version>
<mybatis.version>3.4.5</mybatis.version>
<aspectjweaver.version>1.6.8</aspectjweaver.version>
<junit.version>4.12</junit.version>
<jsp-api.version>2.0</jsp-api.version>
<servlet-api.version>2.5</servlet-api.version>
<jstl.version>1.2</jstl.version>
<mybatis-spring.version>1.3.0</mybatis-spring.version>
<druid.version>1.0.9</druid.version>
<!--文件的编码格式-->
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
</properties>
<!--jar包管理-->
<!--引入依赖-->
<dependencies>
<!-- spring -->
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>${aspectjweaver.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>${spring.version}</version>
</dependency>
<!--spring包-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version>
</dependency>
<!--用于SpringMVC-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${spring.version}</version>
</dependency>
<!--用于数据库源相关操作-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${spring.version}</version>
</dependency>
<!--ServletAPI-->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>${servlet-api.version}</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>jsp-api</artifactId>
<version>${jsp-api.version}</version>
<scope>provided</scope>
</dependency>
<!--jstl标签-->
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>${jstl.version}</version>
</dependency>
<!--MySQL数据库驱动-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${mysql.version}</version>
</dependency>
<!--测试框架-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>${junit.version}</version>
<scope>compile</scope>
</dependency>
<!-- log start -->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>${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 -->
<!--mybatis-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>${mybatis.version}</version>
</dependency>
<!--MyBatis集成Spring-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>${mybatis-spring.version}</version>
</dependency>
<!--数据源-->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>${druid.version}</version>
</dependency>
</dependencies>
<build>
<!--插件-->
<plugins>
<!--tomcat插件-->
<plugin>
<groupId>org.apache.tomcat.maven</groupId>
<artifactId>tomcat7-maven-plugin</artifactId>
<version>2.2</version>
<!--插件使用的相关配置-->
<configuration>
<!--端口号-->
<port>18081</port>
<!--写当前项目的名字(虚拟路径),如果写/,那么每次访问项目就不需要加项目名字了-->
<path>/</path>
<!--解决get请求乱码-->
<uriEncoding>UTF-8</uriEncoding>
</configuration>
</plugin>
</plugins>
</build>
</project>
创建子模块: SSM_dao 持久层
1.创建实体类 com.itcast.bean -> Items.class
2.创建接口类 com.itcast.mapper -> Items.interface
3.创建接口类的映射文件(注册sql语句) ->ItemsMapper.xml
4.创建applicationContext-dao.xml ,把mybatis交给spring管理 –>1.注册数据库 2.注册SqlSessionFactoryBean 3.配置MapprScannerConfigurer接口扫描包
Items.class–>
package com.itcast.bean;
import java.io.Serializable;
import java.util.Date;
public class Items implements Serializable {
/**
* pojo
*/
private Integer id;
private String name;
private Float price;
private String pic;
private Date createtime;
private String detail;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Float getPrice() {
return price;
}
public void setPrice(Float price) {
this.price = price;
}
public String getPic() {
return pic;
}
public void setPic(String pic) {
this.pic = pic;
}
public Date getCreatetime() {
return createtime;
}
public void setCreatetime(Date createtime) {
this.createtime = createtime;
}
public String getDetail() {
return detail;
}
public void setDetail(String detail) {
this.detail = detail;
}
@Override
public String toString() {
return "Items{" +
"id=" + id +
", name='" + name + '\'' +
", price=" + price +
", pic='" + pic + '\'' +
", createtime=" + createtime +
", detail='" + detail + '\'' +
'}';
}
}
Items.interface–>
package com.itcast.mapper;
import com.itcast.bean.Items;
public interface ItemsMapper {
/**
* 根据ID查询用户
* @param id
* @return
*/
public Items findById(Integer id);
}
ItemsMapper.xml –>
<?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">
<!--命名空间: 必须写全限定名(要注册SQL语句的接口类))-->
<mapper namespace="com.itcast.mapper.ItemsMapper" >
<!--id是接口类的方法名 parameterType传参参数类型 resulttype返回值类型 -->
<select id="findById" parameterType="Integer" resultType="com.itcast.bean.Items">
select * from items where id=#{id}
</select>
</mapper>
applicationContext-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:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:aop="http://www.springframework.org/schema/aop" xmlns:cache="http://www.springframework.org/schema/cache"
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/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/cache
http://www.springframework.org/schema/cache/spring-cache.xsd">
<!-- 数据库连接池 -->
<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" destroy-method="close">
<property name="url" value="jdbc:mysql://localhost:3306/ssm?characterEncoding=utf8" />
<property name="username" value="root" />
<property name="password" value="luokangtao" />
<property name="driverClassName" value="com.mysql.jdbc.Driver" />
</bean>
<!-- SqlSessionFactoryBean -->
<bean id="sqlSessionFactoryBean" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<!--别名-->
<property name="typeAliasesPackage" value="com.itcast.bean"/>
</bean>
<!-- 配置接口扫描包 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!--指定接口位置-->
<property name="basePackage" value="com.itcast.mapper"/>
</bean>
</beans>
创建子模块: SSM_service 业务层
1.创建业务层的接口类 ItemsService.interface
2.创建业务层的接口实现类 ItemsServiceImpl.class (实现了: ItemsService.interface )
3.创建spring配置文件 –>applicationContext-service.xml –>1. 导入dao层的applicationContext-dao.xml 2.开启扫描组件Conponent-scan 3.配置事务管理器 4.配置事务规则tx:advice 5.配置切面 aop:config
ItemsService.interface—>
package com.itcast.service;
import com.itcast.bean.Items;
public interface ItemsService {
/**
* 根据ID查询用户
* @param id
* @return
*/
public Items findById(Integer id);
}
ItemsServiceImpl.class (实现了: ItemsService.interface )
package com.itcast.service.Impl;
import com.itcast.bean.Items;
import com.itcast.mapper.ItemsMapper;
import com.itcast.service.ItemsService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import javax.annotation.Resource;
@Service
public class ItemsServiceImpl implements ItemsService {
@Autowired
private ItemsMapper itemsMapper;
@Override
public Items findById(Integer id) {
Items items = itemsMapper.findById(id);
System.out.println("ItemsServiceImpl方法里面");
return items;
}
}
applicationContext-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:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:aop="http://www.springframework.org/schema/aop" xmlns:cache="http://www.springframework.org/schema/cache"
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/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/cache
http://www.springframework.org/schema/cache/spring-cache.xsd">
<!--导入dao层application-dao.xml-->
<import resource="classpath:spring/applicationContext-dao.xml"></import>
<!--service事务开始-->
<!--扫描组件-->
<context:component-scan base-package="com.itcast.service"/>
<!-- 配置事务管理器 -->
<bean id="transactionManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"/>
</bean>
<!-- 配置事务的通知-->
<tx:advice id="txAdvice">
<tx:attributes>
<tx:method name="save*" propagation="REQUIRED"/>
<tx:method name="modify*" propagation="REQUIRED"/>
<tx:method name="delete*" propagation="REQUIRED"/>
<tx:method name="find*" read-only="true"/>
<tx:method name="*" propagation="REQUIRED"/>
</tx:attributes>
</tx:advice>
<!-- 配置切面 -->
<aop:config>
<aop:pointcut expression="execution(* com.itcast.service.Impl.*.*(..))" id="tranpointcut"/>
<!-- 事务控制 -->
<aop:advisor advice-ref="txAdvice" pointcut-ref="tranpointcut"/>
</aop:config>
<!--service事务结束-->
</beans>
创建子模块: SSM_web 控制层
1.创建控制层Comtorller类 –> ItemsContorller.class
2.创建pages/Items.Jsp –> 静态网页
3.创建applicationContext.xml –> 1.导入service层的application-service.xml 配置文件
4.创建SpringMvc.xml –> 1.开启组件包扫描component-scan 2.开启注解驱动 mvc:annotation-driven 3.视图解析view.InternalResourceViewResolver 4.静态资源过滤
5.创建log4j日志–>log4J.properties
6.创建web.xml –>1.Spring核心监听器(配置Spring初始化) 2.配置前端控制器(SpringMVC) 3.Post的编码过滤器(防止中文乱码)
ItemsContorller.class–>
package com.itcast.web;
import com.itcast.bean.Items;
import com.itcast.service.ItemsService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
@Controller
@RequestMapping("/ItemsContorller")
public class ItemsContorller {
@Autowired
private ItemsService itemsService;
@RequestMapping(value = "/getById")
public String getById(Model model){
Items items = itemsService.findById(1);
model.addAttribute("item",items);
return "Items";
}
}
pages/Items.Jsp 映射网页–>
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<form>
<table width="100%" border=1>
<tr>
<td>商品名称</td>
<td> ${item.name } </td>
</tr>
<tr>
<td>商品价格</td>
<td> ${item.price } </td>
</tr>
<tr>
<td>生成日期</td>
<td> <fmt:formatDate value="${item.createtime}" pattern="yyyy-MM-dd HH:mm:ss"/> </td>
</tr>
<tr>
<td>商品简介</td>
<td>${item.detail} </td>
</tr>
</table>
</form>
</body>
</html>
applicationContext.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:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:aop="http://www.springframework.org/schema/aop" xmlns:cache="http://www.springframework.org/schema/cache"
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/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/cache
http://www.springframework.org/schema/cache/spring-cache.xsd">
<!--导入service层的application-service.xml-->
<import resource="classpath:spring/applicationContext-service.xml"></import>
</beans>
SpringMvc.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"
xsi:schemaLocation="
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd">
<!--包扫描-->
<context:component-scan base-package="com.itcast.web"/>
<!--注解驱动-->
<mvc:annotation-driven/>
<!--视图解析器-->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<!--前缀-->
<property name="prefix" value="/WEB-INF/pages/"/>
<!--后缀-->
<property name="suffix" value=".jsp"/>
</bean>
<!--静态资源过滤-->
<mvc:default-servlet-handler/>
</beans>
log4J.properties–>
##设置日志记录到控制台的方式
log4j.appender.std=org.apache.log4j.ConsoleAppender
log4j.appender.std.Target=System.err
log4j.appender.std.layout=org.apache.log4j.PatternLayout
log4j.appender.std.layout.ConversionPattern=%d{yyyy-MM-ddHH:mm:ss}%5p%c{1}:%L-%m%n
##设置日志记录到文件的方式
log4j.appender.file=org.apache.log4j.FileAppender
log4j.appender.file.File=mylog.txt
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.file.layout.ConversionPattern=%d{ABSOLUTE}%5p%c{1}:%L-%m%n
##日志输出的级别,以及配置记录方案 debug级别 std控制台输出 file文件输出
log4j.rootLogger=debug,std,file
web.xml–>
<?xml version="1.0" encoding="UTF-8"?>
<!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="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"
version="3.0">
<!--POST编码过滤器-->
<filter>
<filter-name>characterEncoding</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<!--指定编码-->
<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>
<!--编码映射拦截-->
<filter-mapping>
<filter-name>characterEncoding</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!--spring核心监听器-配置Spring初始化的监听器-->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</context-param>
<!--前端核心控制器-->
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!--指定springmvc核心配置文件-->
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:springmvc.xml</param-value>
</init-param>
<!--启动加载优先级-->
<load-on-startup>1</load-on-startup>
</servlet>
<!--映射拦截-->
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
最后一步就是数据库mysql数据库
根据需求来修改接口类,实体类,数据库
CREATE TABLE `items` (
`id` INT(10) NOT NULL AUTO_INCREMENT,
`name` VARCHAR(20) DEFAULT NULL,
`price` FLOAT(10,0) DEFAULT NULL,
`pic` VARCHAR(40) DEFAULT NULL,
`createtime` DATETIME DEFAULT NULL,
`detail` VARCHAR(200) DEFAULT NULL,
PRIMARY KEY (`id`)
) ENGINE=INNODB AUTO_INCREMENT=9 DEFAULT CHARSET=utf8;
总结:依赖整合和运行调试
1.每个模块都需要 spring 或者 junit 的 jar,况且最终 package 打完包最后生成的项目中的
jar 就是各个模块依赖的整合,所以我们可以把项目中所需的依赖都可以放到父工程中,模块
中只留模块和模块之间的依赖
2.运行调试:
方法 1:在 ssm_web 工程的 pom.xml 中配置 tomcat 插件运行
运行 ssm_web 工程它会从本地仓库下载依赖的 jar 包,所以当 ssm_web 依赖的 jar 包内容修
改了必须及时发布到本地仓库,比如:ssm_web 依赖的 ssm_service 修改了,需要及时将ssm_service 发布到本地仓库。
方法 2:在父工程的 pom.xml 中配置 tomcat 插件运行,自动聚合并执行
推荐方法 2,如果子工程都在本地,采用方法 2则不需要子工程修改就立即发布到本地仓库,
父工程会自动聚合并使用最新代码执行。
注意:如果子工程和父工程中都配置了 tomcat 插件,运行的端口和路径以子工程为准。