idea整合maven idea整合ssm框架

1.新建一个maven项目

1.创建一个叫做MyFirstSsm的项目
		2.打开pom.xml文件
			导入jar和配置资源扫描（如下）

<?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.hkd</groupId>
    <artifactId>MyFirstSsm</artifactId>
    <version>1.0-SNAPSHOT</version>

    <properties>
        <maven.compiler.source>8</maven.compiler.source>
        <maven.compiler.target>8</maven.compiler.target>
    </properties>
    <!--配置扫描资源文件-->
    <build>
        <resources>
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.*</include>
                </includes>
            </resource>
            <resource>
                <directory>src/main/resources</directory>
                <includes>
                    <include>**/*.*</include>
                </includes>
            </resource>

            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.xml</include>
                </includes>
            </resource>

        </resources>
    </build>
    <!--导入需要的jar包-->
    <dependencies>
        <!--webmvc的jar-->
        <!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>5.2.11.RELEASE</version>
        </dependency>
        <!--spring的jar-->
        <!-- https://mvnrepository.com/artifact/org.springframework/spring-core -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>5.2.12.RELEASE</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.springframework/spring-tx -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-tx</artifactId>
            <version>5.2.11.RELEASE</version>
        </dependency>
        <!--mybatis和spring整合的jar-->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>2.0.5</version>
        </dependency>
        <!--数据库驱动jar-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.37</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>8.0.22</version>
        </dependency>
        <!--mybatis的jar-->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.5.6</version>
        </dependency>
        <!--数据池jar-->
        <!-- https://mvnrepository.com/artifact/org.apache.commons/commons-dbcp2 -->
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-dbcp2</artifactId>
            <version>2.7.0</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.apache.commons/commons-pool2 -->
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-pool2</artifactId>
            <version>2.9.0</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>5.2.11.RELEASE</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.springframework/spring-jdbc -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>5.2.11.RELEASE</version>
        </dependency>
        <!--测试jar-->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.11</version>
            <scope>test</scope>
        </dependency>
        <!--日志jar-->
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.17</version>
        </dependency>
        <!--jstl-->
        <dependency>
            <groupId>javax.servlet.jsp.jstl</groupId>
            <artifactId>jstl-api</artifactId>
            <version>1.2</version>
        </dependency>
        <dependency>
            <groupId>javax.servlet.jsp.jstl</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>

    </dependencies>

</project>

可以直接赋值粘贴至你的项目
		3.右键选择你的项目，点击Add FrameWorks Support（如图），将WebApplication勾选上，Ok
			![在这里插入图片描述]()

2.开始创建三层架构的包

1.如图所示
	![在这里插入图片描述]()
	2.在mysql中创建一个数据库，并创建一个用于测试的user表（如图）
	![在这里插入图片描述]()
	3.插入几条数据用于待会测试！！

开始创建三层架构

1.pojo层创建user实体类，属性对应数据库

package com.hkd.pojo;

/**
 * User表的实体类
 */
public class User {
    private int userid;
    private String username;
    private int usersex;

    public int getUserid() {
        return userid;
    }

    public void setUserid(int userid) {
        this.userid = userid;
    }

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public int getUsersex() {
        return usersex;
    }

    public void setUsersex(int usersex) {
        this.usersex = usersex;
    }

    @Override
    public String toString() {
        return "User{" +
                "userid=" + userid +
                ", username='" + username + '\'' +
                ", usersex=" + usersex +
                '}';
    }
}

2.在mapper包下创建usermapper接口和usermapper.xml文件

package com.hkd.mapper;

import com.hkd.pojo.User;

import java.util.List;

public interface UserMapper {
    List<User> selectUserList();
    void insertUser(User user);
}

<?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">
<mapper namespace="com.hkd.mapper.UserMapper">
<select id="selectUserList" resultType="com.hkd.pojo.User">
    select * from user
</select>
<insert id="insertUser" parameterType="com.hkd.pojo.User">
    insert into user(username,usersex) values(#{username},#{usersex})
</insert>
</mapper>

3.写配置文件，在resources文件夹下写配置文件（代码如下）
			applicationContext-dao.xml --扫描mapper层，配置回话工厂等

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns="http://www.springframework.org/schema/beans"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xsi:schemaLocation="http://www.springframework.org/schema/aop
     http://www.springframework.org/schema/aop/spring-aop-4.3.xsd
      http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans-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/tx
           http://www.springframework.org/schema/tx/spring-tx-4.3.xsd ">
    <!--加载数据资源文件-->
    <context:property-placeholder location="classpath:db.properties"/>

    <!--1.连接数据池-->
    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="${jdbc.driver}"/>
        <property name="url" value="${jdbc.url}"/>
        <property name="username" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>
     </bean>
    <!--2.配置会话工厂-->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <property name="configLocation" value="classpath:sqlMapConfig.xml"/>
    </bean>
    <!--3.开启mapper扫描-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.hkd.mapper"/>
    </bean>
</beans>

applicationContext-service.xml --配置service层

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns="http://www.springframework.org/schema/beans"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xsi:schemaLocation="http://www.springframework.org/schema/aop
     http://www.springframework.org/schema/aop/spring-aop-4.3.xsd
      http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans-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/tx
           http://www.springframework.org/schema/tx/spring-tx-4.3.xsd ">
    <!--开启对service包的扫描-->
    <context:component-scan base-package="com.hkd.service"/>


</beans>

applicationContext-trans.xml --配置事务

<?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: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/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">
    <!--配置事务管理器的切面-->
    <!--导入dao.xml文件-->
    <import resource="classpath:applicationContext-dao.xml"/>
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>
    <!--配置事务属性-->
    <tx:advice id="myAdvice" transaction-manager="transactionManager">
        <tx:attributes>
            <!--service层下的方法开头要带一下几种头，才能被事物监听-->
            <tx:method name="add*" propagation="REQUIRED"/>
            <tx:method name="modify*" propagation="REQUIRED"/>
            <tx:method name="drop*" propagation="REQUIRED"/>
            <tx:method name="find*" read-only="true"/>
            <tx:method name="userLogin" read-only="true"/>
        </tx:attributes>
    </tx:advice>
    <!--配置切点-->
    <aop:config>
        <aop:pointcut id="myPointcut" expression="execution(* com.hkd.service.*.*(..))"/>
        <aop:advisor advice-ref="myAdvice" pointcut-ref="myPointcut"/>
    </aop:config>


</beans>

db.properties --数据库属性配置

#根据你的实际情况写
#我的mysql是8版本
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3310/ssm1?useSSL=false&useUnicode=true&characterEncoding=UTF-8&serverTimezone=UTC
jdbc.username=root
jdbc.password=123

log4j.properties --日志配置

log4j.rootLogger=debug,console

### appender.console输出到控制台 ###
log4j.appender.console=org.apache.log4j.ConsoleAppender
log4j.appender.console.layout=org.apache.log4j.PatternLayout
log4j.appender.console.layout.ConversionPattern=%d{yyyy-MM-dd hh:mm:ss} %l %p %m %n
log4j.appender.console.Target=System.out

springmvc.xml --对视图的控制，对controller注解的扫描，拦截器配置，静态资源的加载

<?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.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">
    <!--开启对controller包的扫描-->
    <context:component-scan base-package="com.hkd.controller"/>
    <!--配置注解驱动-->
    <mvc:annotation-driven/>
    <!--配置视图解析器-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/jsp/"/>
        <property name="suffix" value=".jsp"/>
    </bean>
    <!--配置静态资源文件映射器-->
    <!--在WEB-INF文件夹下创建对应的静态资源包-->
    <mvc:resources mapping="/js/**" location="/WEB-INF/js/"/>
    <mvc:resources mapping="/css/**" location="/WEB-INF/css/"/>
    <mvc:resources mapping="/img/**" location="/WEB-INF/img/"/>
    <mvc:resources mapping="/resource/**" location="/WEB-INF/resource/"/>



</beans>

sqlMapConfig.xml --用于mapper.xml文件（必不可少！！）

<?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>
<!--配置别名-->
    <typeAliases>
        <package name="com.hkd.pojo"/>
    </typeAliases>


</configuration>

然后我们开始配置WEB-INF下的web.xml文件

<?xml version="1.0" encoding="UTF-8"?>
<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_4_0.xsd"
         version="4.0">

    <!--指定spring配置文件的位置以及名称-->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:applicationContext-*.xml</param-value>
    </context-param>
    <!--配置启动spring框架的监听器-->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    <!--配置字符编码过滤器-->
    <filter>
        <filter-name>encodingFilter</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>encodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
    <!--配置前端控制器-->
    <servlet>
        <servlet-name>springmvc</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>
        <servlet-name>springmvc</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
    <!--静态文件的使用范围（全路径下）-->
    <servlet-mapping>
        <servlet-name>springmvc</servlet-name>
        <url-pattern>*.css</url-pattern>
    </servlet-mapping>

    <servlet-mapping>
        <servlet-name>springmvc</servlet-name>
        <url-pattern>*.js</url-pattern>
    </servlet-mapping>

    <servlet-mapping>
        <servlet-name>springmvc</servlet-name>
        <url-pattern>*.jpg</url-pattern>
    </servlet-mapping>

    <servlet-mapping>
        <servlet-name>springmvc</servlet-name>
        <url-pattern>*.png</url-pattern>
    </servlet-mapping>
</web-app>

3.配置tomcat

![在这里插入图片描述]()

4.开始写service层代码

1.UserService

package com.hkd.service;

import com.hkd.pojo.User;

import java.util.List;

public interface UserService {
    public List<User> findUserList();
    public void  addUser(User user);
}

2.UserServiceImpl

package com.hkd.service.impl;

import com.hkd.mapper.UserMapper;
import com.hkd.pojo.User;
import com.hkd.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;
@Service
public class UserServiceImpl implements UserService {
    @Autowired
    private UserMapper userMapper;
    @Override
    public List<User> findUserList() {
        return userMapper.selectUserList();
    }

    @Override
    public void addUser(User user) {
        this.userMapper.insertUser(user);

    }
}

5.controller层

package com.hkd.controller;

import com.hkd.pojo.User;
import com.hkd.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;

import java.util.ArrayList;

@Controller
@RequestMapping("/user")
public class UserListController {
    @Autowired
    private UserService userService;
    @RequestMapping("/list")
    public String userlist(Model model){
        model.addAttribute("userList",userService.findUserList());
        return "userlist";
    }

}

6.jsp

1.首先在WEB-INF下创建jsp文件夹
			2.新建一个uselist.jsp（如下）

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
<table>
    <tr><td>用户id</td><td>用户名</td><td>用户性别</td></tr>
    <c:forEach items="${userList}" var="user" >
        <tr>
            <td>${user.userid}</td>
            <td>${user.username}</td>
            <td>${user.usersex}</td>
        </tr>
    </c:forEach>
</table>
</body>
</html>

7.项目结构走一波

1.打开File->Project structure->artifaces
		2.在WEB-INF下新建一个lib包，然后点击那个小加号，然后Library Files 选中所有的jar，apply

运行试试吧

浏览器输入http://localhost:8080/user/list