IDEA搭建SSM+maven项目

一、IDEA+MAVEN环境搭建

1.1 建立Maven项目

在IDEA的File菜单选择Project，然后在左侧的任务栏里面找到Maven工程，填写好工程名称，点击Finish即可

1.2 配置maven环境

参考上个一作品

1.3 项目目录构建

1.3.1 代码目录结构

创建完工程后，在src-main-java下构建com包，并且在com下创建，dao,service,mvc,po包用于存储代码

1.3.2 配置文件目录结构

在resources下创建 mapper(用于存储mybatis配置文件),spring(用来存放spring配置文件)两个子目录

1.3.3 web目录

在src-main下创建一个webapp目录，并且在webapp目录下构建一个叫WEB-INF的子目录，并且建立一个web.xml的文件

<!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="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"
metadata-complete="true">

</web-app>

二、搭建SSM框架

2.1. maven依赖

在pom.xml文件中导入如下依赖:

2.1.1 spring-MVC

<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>4.3.18.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>4.3.18.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>4.3.18.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>4.3.18.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>4.3.18.RELEASE</version>
</dependency>

2.1.2 mybatis和驱动类

<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.4.6</version>
</dependency>
<dependency>
<groupId>com.oracle</groupId>
<artifactId>ojdbc6</artifactId>
<version>11.2.0</version>
</dependency>

2.1.3 事务和整合依赖

<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>4.3.18.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>4.3.18.RELEASE</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.2</version>
</dependency>

2.1.4 Servlet和连接池

<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
<scope>provided</scope>
</dependency>

<dependency>
<groupId>commons-dbcp</groupId>
<artifactId>commons-dbcp</artifactId>
<version>1.4</version>
</dependency>

2.1.5 构建插件

build>
<resources>
<resource>
<directory>src/main/resources</directory>
<includes>
<include>**/*.properties</include>
<include>**/*.xml</include>
<include>**/*.tld</include>
</includes>
<filtering>false</filtering>
</resource>
<resource>
<directory>src/main/java</directory>
<includes>
<include>**/*.properties</include>
<include>**/*.xml</include>
<include>**/*.tld</include>
</includes>
<filtering>false</filtering>
</resource>
</resources>
</build>

注意：构建如果在工程中所有的配置文件都放在resources下，一般可以不加构建插件，但是为了保证工程打包内容完整，建议加上构建插件以保证内容完整

2.2 创建类和JSP文件

2.2.1 PO类

package com.po;
import java.sql.Date;
import java.util.List;
public class Emp {
private Long empno;
private String ename;
private String job;
private Long mgr;
private Date hiredate;
private Float sal;
private Float comm;
private Long deptno;
public Long getEmpno() {
return empno;
}
public void setEmpno(Long empno) {
this.empno = empno;
}
public String getEname() {
return ename;
}
public void setEname(String ename) {
this.ename = ename;
}
public String getJob() {
return job;
}
public void setJob(String job) {
this.job = job;
}
public Long getMgr() {
return mgr;
}
public void setMgr(Long mgr) {
this.mgr = mgr;
}
public Date getHiredate() {
return hiredate;
}
public void setHiredate(Date hiredate) {
this.hiredate = hiredate;
}
public Float getSal() {
return sal;
}
public void setSal(Float sal) {
this.sal = sal;
}
public Float getComm() {
return comm;
}
public void setComm(Float comm) {
this.comm = comm;
}
public Long getDeptno() {
return deptno;
}
public void setDeptno(Long deptno) {
this.deptno = deptno;
}
}

2.2.2 DAO类

package com.dao;
import com.po.Emp;
import org.springframework.stereotype.Repository;
import java.util.List;
@Repository
public interface EmpDao {
public List<Emp> selectEmp();
}

2.2.3 SERVICE类

package com.service;
import com.dao.EmpDao;
import com.po.Emp;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import javax.annotation.Resource;
import java.util.List;
@Service
public class EmpService {
@Resource
private EmpDao dao;
public List<Emp> selectEmp(){
return this.dao.selectEmp();
}
}

2.2.4 MVC类

package com.mvc;
import com.po.Emp;
import com.service.EmpService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.RequestMapping;
import javax.servlet.http.HttpServletRequest;
import java.util.List;
@Controller
public class EmpMVC {
@Autowired
private EmpService service;
@RequestMapping("/show")
public String selectAll(HttpServletRequest request){
List<Emp> list = service.selectEmp();
request.setAttribute("list",list);
System.out.println("我们是:"+list.size());
return "page/show.jsp";
}
}

2.2.5 JSP文件

配置工程支持WEB开发

（1）在File选项卡中找到Project Structure选项进入

（2）在Project Settings里找到Modules，点击左上方"+"，找到WEB模块，点击确定加入WEB模块

（3）点击添加的WEB模块位置，将Deployment Descriptors里面的path修改成刚才我们建立的web.xml文件的位置

（4）在Web Resource Directories里面的路径修改成我们的webapp路径

（5）点击Artfacts选项，点击“+”，选择Web Application:Exploaded，选择from modules，找到我们刚才建立的web工程点击确定，这样才能让我们可以在WEBAPP目录下建立JSP文件，并且tomcat服务器找到该WEB项目进行部署和运行

完成以上步骤以后才可以建立jsp文件

2.3 配置文件

2.3.1 spring 配置文件

在 resources下的spring中建立

（1）spring-mvc.xml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: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-4.3.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd
">

<mvc:annotation-driven/>
<context:component-scan base-package="com"/>
</beans>

（2）spring-mybatis.xml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:tx="http://www.springframework.org/schema/tx"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.0.xsd">

<bean id="placeholderConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="location" value="classpath:jdbc.properties"></property>
</bean>

<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">

<property name="driverClassName" value="${driver}"/>
<property name="url" value="${url}"/>
<property name="username" value="${username}"/>
<property name="password" value="${password}"/>

<property name="initialSize" value="${initialSize}"></property>

<property name="maxActive" value="${maxActive}"></property>

<property name="maxIdle" value="${maxIdle}"></property>

<property name="minIdle" value="${minIdle}"></property>

<property name="maxWait" value="${maxWait}"></property>
</bean>


<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>

<property name="mapperLocations" value="classpath:mapper/*.xml"/>
</bean>

<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.dao"/>
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
</bean>
<bean id="transactionManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"/>
</bean>

<tx:annotation-driven transaction-manager="transactionManager" />

</beans>

2.3.2 web.xml文件

在web.xml文件中加入

<filter>
<filter-name>encoding-filter</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>encoding-filter</filter-name>
<url-pattern>/* </url-pattern>
<servlet-name>springDispatcherServlet</servlet-name>
</filter-mapping>

<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring/spring-mybatis.xml</param-value>
</context-param>

<servlet>
<servlet-name>springDispatcherServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring/spring-mvc.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>

<servlet-mapping>
<servlet-name>springDispatcherServlet</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>

2.3.3 jdbc.properties文件

在resources下直接建立jdbc.properties文件，存储JDBC配置信息

driver=oracle.jdbc.driver.OracleDriver
#driver=com.mysql.cj.jdbc.Driver
url=jdbc:oracle:thin:@localhost:1521:orcl
#url=jdbc:mysql://localhost:3306/dbname
#账户
username=root
#密码
password=x5
#定义初始连接数
initialSize=1
#定义最大连接数
maxActive=20
#定义最大空闲
maxIdle=20
#定义最小空闲
minIdle=1
#定义最长等待时间
maxWait=60000

2.3.4 mapper映射文件

在resources下的mapper文件夹中建立一个叫emp.xml的映射文件，用于存储mybatis映射配置信息

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org/DTD Mapper 3.0" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.dao.EmpDao">
<select id="selectEmp" resultType="com.po.Emp">
select * from emp
</select>
</mapper>

三、部署和运行

3.1 部署

3.1.1 Tomcat服务器配置

请参考文件《idea搭建maven环境.doc》

3.1.2 项目部署

（1）找到运行窗口，选择add configurations，点击左上角“+”，选择tomcat服务器，选择local。在弹出窗口的application server 位置找到配置好的Tomcat服务器

URL：代表访问地址默认为 [HTTP://本机IP：8080]
JRE：为默认JDK版本
VM options：为Tomcat服务器运行的JVM参数

（2）选择deployment选项卡，点击右侧加号选择artifact，刚才建立的好的工程就会加入到Tomcat服务器下，点击apply完成部署

注意：下方的Application Context位置代表访问工程的默认路径，可以只保留“/”，后面的内容都删除，方便访问，只需要输入http://IP:8080即可访问工程，无需如eclipse一样去输入工程名

3.2 访问运行

（1）启动Tomcat服务器

（2）默认打开浏览器以配置好的地址直接进行访问

原文链接：https://blog.csdn.net/weixin_51311866/article/details/114277738