使用IDEA搭建ssm框架的详细图文教程

ssm(spring springMVC mybatis)

1.创建项目

file->new->project

2.新建的maven项目目录结构

添加ssm需要的文件夹等

如果去掉java文件夹的蓝色标志，会发现这里new时不能创建java类或包

如果main/java前不是蓝色文件夹或test/java前不是绿色文件夹，可以这样添加

3.加入maven依赖

pom.xml

<?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>org.example</groupId>
<artifactId>ssm3</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>war</packaging>

<name>ssm3 Maven Webapp</name>
<!-- FIXME change it to the project's website -->
<url>http://www.example.com</url>

<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.7</maven.compiler.source>
<maven.compiler.target>1.7</maven.compiler.target>
<jackson.version>2.5.4</jackson.version>
</properties>

<dependencies>

<!-- controller返回json -->
<dependency>
 <groupId>com.fasterxml.jackson.core</groupId>
 <artifactId>jackson-core</artifactId>
 <version>${jackson.version}</version>
</dependency>

<dependency>
 <groupId>com.fasterxml.jackson.core</groupId>
 <artifactId>jackson-databind</artifactId>
 <version>${jackson.version}</version>
</dependency>

<!-- 引入spring mvc的jar包 -->
<!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc -->
<dependency>
 <groupId>org.springframework</groupId>
 <artifactId>spring-webmvc</artifactId>
 <version>4.3.7.RELEASE</version>
</dependency>

<!-- JDBC支持包，包括数据源设置和JDBC访问支持 -->
<!-- https://mvnrepository.com/artifact/org.springframework/spring-jdbc -->
<dependency>
 <groupId>org.springframework</groupId>
 <artifactId>spring-jdbc</artifactId>
 <version>4.3.7.RELEASE</version>
</dependency>

<!-- Spring提供对AspectJ框架的整合 -->
<!-- https://mvnrepository.com/artifact/org.springframework/spring-aspects -->
<dependency>
 <groupId>org.springframework</groupId>
 <artifactId>spring-aspects</artifactId>
 <version>4.3.7.RELEASE</version>
</dependency>

<!-- mybatis依赖包 -->
<!-- https://mvnrepository.com/artifact/org.mybatis/mybatis -->
<dependency>
 <groupId>org.mybatis</groupId>
 <artifactId>mybatis</artifactId>
 <version>3.4.2</version>
</dependency>

<!-- mybatis引入spring适配包 -->
<!-- https://mvnrepository.com/artifact/org.mybatis/mybatis-spring -->
<dependency>
 <groupId>org.mybatis</groupId>
 <artifactId>mybatis-spring</artifactId>
 <version>1.3.1</version>
</dependency>

<!-- 数据库连接池 c3p0 -->
<!-- https://mvnrepository.com/artifact/c3p0/c3p0 -->
<dependency>
 <groupId>c3p0</groupId>
 <artifactId>c3p0</artifactId>
 <version>0.9.1.2</version>
</dependency>

<!-- mysql驱动 -->
<!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
<dependency>
 <groupId>mysql</groupId>
 <artifactId>mysql-connector-java</artifactId>
 <version>8.0.13</version>
</dependency>

<!-- jstl标签相关的包 -->
<!-- https://mvnrepository.com/artifact/jstl/jstl -->
<dependency>
 <groupId>jstl</groupId>
 <artifactId>jstl</artifactId>
 <version>1.2</version>
</dependency>

<!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api -->
<dependency>
 <groupId>javax.servlet</groupId>
 <artifactId>javax.servlet-api</artifactId>
 <version>3.0.1</version>
 <scope>provided</scope>
</dependency>

<!-- 逆向工程jar包 -->
<!-- https://mvnrepository.com/artifact/org.mybatis.generator/mybatis-generator-core -->
<dependency>
 <groupId>org.mybatis.generator</groupId>
 <artifactId>mybatis-generator-core</artifactId>
 <version>1.3.5</version>
</dependency>

<!--分页依赖的jar包-->
<dependency>
 <groupId>com.github.pagehelper</groupId>
 <artifactId>pagehelper</artifactId>
 <version>5.0.0</version>
</dependency>

</dependencies>

<build>
<finalName>ssm3</finalName>
<pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
 <plugins>
 <plugin>
  <artifactId>maven-clean-plugin</artifactId>
  <version>3.1.0</version>
 </plugin>
 <!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging -->
 <plugin>
  <artifactId>maven-resources-plugin</artifactId>
  <version>3.0.2</version>
 </plugin>
 <plugin>
  <artifactId>maven-compiler-plugin</artifactId>
  <version>3.8.0</version>
 </plugin>
 <plugin>
  <artifactId>maven-surefire-plugin</artifactId>
  <version>2.22.1</version>
 </plugin>
 <plugin>
  <artifactId>maven-war-plugin</artifactId>
  <version>3.2.2</version>
 </plugin>
 <plugin>
  <artifactId>maven-install-plugin</artifactId>
  <version>2.5.2</version>
 </plugin>
 <plugin>
  <artifactId>maven-deploy-plugin</artifactId>
  <version>2.8.2</version>
 </plugin>
 </plugins>
</pluginManagement>
</build>
</project>

4.加入spring配置文件（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: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">

<!-- spring 配置文件 主要配置和业务逻辑有关的 -->

<!-- 配置数据库连接的相关信息 dbconfig.properties也定义在resources文件夹下-->
<context:property-placeholder location="classpath:dbconfig.properties"/>
<!-- 数据源 -->
<bean id="pooledDataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
 <property name="jdbcUrl" value="${jdbc.jdbcUrl}"></property>
 <property name="driverClass" value="${jdbc.driverClass}"></property>
 <property name="user" value="${jdbc.user}"></property>
 <property name="password" value="${jdbc.password}"></property>
</bean>

<!--扫描com.ssm所有的除了@Controller以外的其它注解，也就是service和dao层的注解
 service层注解 @Service dao层注解@Repository
-->
<context:component-scan base-package="com.ssm">
 <!-- 不能扫描控制器 -->
<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/> </context:component-scan>

<!-- 把mybatis和spring整合在一起，mybatis-config.xml也和applictionContext.xml同文件夹
  mapper/星号.xml 指定要扫描的映射文件（sql语句的xml文件）的路径，和applictionContext.xml同文件夹 -->
<!-- 配置和mybatis的整合 -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
 <!-- 指定mybatis 全局配置文件的位置 -->
 <property name="configLocation" value="classpath:mybatis-config.xml"></property>
 <property name="dataSource" ref="pooledDataSource"></property>
 <!-- 指定mybatismapper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">
 <!-- 扫描所有的dao接口 -->
 <property name="basePackage" value="com.ssm.dao"></property>
</bean>

<!-- 事务控制的配置,为所有的非get开头的service层方法织入事务 -->

<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
 <!-- 控制数据源 -->
 <property name="dataSource" ref="pooledDataSource"></property>
</bean>

<aop:config>
 <!-- 切入点表达式 -->
 <aop:pointcut expression="execution(* com.liuzhan.service..*(..) )" id="txPoint"/>
 <!-- 配置事务 -->
 <aop:advisor advice-ref="txAdvice" pointcut-ref="txPoint"/>
</aop:config>
<!-- 配置事务增强 事务如何切入 -->
<tx:advice id="txAdvice">

<tx:attributes>
  <!-- 所有方法都是事务方法 -->
  <tx:method name="*"/>
  <!-- 以get开头的所有方法 -->
  <tx:method name="get*" read-only="true"/>
 </tx:attributes>
</tx:advice>
</beans>

5.配置数据库连接相关信息（dbconfig.properties）

#数据库连接
jdbc.jdbcUrl=jdbc:mysql://localhost:3306/ssm-crud?useUnicode=true&characterEncoding=utf-8&serverTimezone=GMT％2B8
#加载驱动
jdbc.driverClass=com.mysql.cj.jdbc.Driver
#数据库登录用户名
jdbc.user=root
#密码
jdbc.password=root

6.mybatis配置文件（mybatis-config.xml）

<!DOCTYPE configuration
 PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
 "http://mybatis.org/dtd/mybatis-3-config.dtd">

<configuration>

</configuration>

注意：这里要建个mapper空文件，因为spring的配置文件applicationContext.xml
中有一项配置要扫描这个文件夹下的所有映射文件

7.配置web.xml文件

web.xml
项目启动，先加载web.xml文件的配置

<!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>
<display-name>Archetype Created Web Application</display-name>

<!-- 1.启动spring容器,加载spring配置文件applicationContext.xml -->
<!-- needed for ContextLoaderListener -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</context-param>

<!-- Bootstraps the root web application context before servlet initialization -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>

<!-- 2. 配置spring mvc 的前端控制器，DispatcherServlet类拦截所有请求，交给controller处理
加载spring mvc配置文件（dispatcherServlet-servlrt.xml,还没有建） -->
<!-- The front controller of this Spring Web application, responsible for handling all application requests -->
<servlet>
<servlet-name>dispatcherServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!-- 不写，写的话需要建个springmvc.xml就不需要dispatcherServlet-servlrt.xml -->
<!-- <init-param>-->
<!--  <param-name>contextConfigLocation</param-name>-->
<!--  <param-value>classpath:springmvc.xml</param-value>-->
<!-- </init-param>-->
<load-on-startup>1</load-on-startup>
</servlet>

<!-- Map all requests to the DispatcherServlet for handling -->
<servlet-mapping>
<servlet-name>dispatcherServlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>

<!-- 编码过滤器，防止出现乱码 -->
<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>
</filter>

<filter-mapping>
<filter-name>characterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>

8.配置spring mvc配置文件（dispatcherServlet-servlet.xml）

spring mvc就是充当控制器，替代servlet

<?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">

<!-- spring mvc主要作用就是充当控制器，只需要扫描controller -->
<context:component-scan base-package="com.ssm" use-default-filters="false">
 <!-- 因为是spring mvc 只需要扫描控制器 -->
 <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
</context:component-scan>

<!-- 配置视图解析器 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
 <property name="prefix" value="/WEB-INF/views/"></property>
 <property name="suffix" value=".jsp"></property>
</bean>

<!-- 两个标准配置 -->
<!-- 将springmvc 不能处理的请求交给tomcat 例如静态资源 -->
<mvc:default-servlet-handler/>

<mvc:annotation-driven>
 <mvc:message-converters>
  <bean class="org.springframework.http.converter.StringHttpMessageConverter"/>
  <bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter"/>
 </mvc:message-converters>
</mvc:annotation-driven>
</beans>

9.使用逆向工程前配置

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE generatorConfiguration
 PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
 "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">

<generatorConfiguration>

<context id="DB2Tables" targetRuntime="MyBatis3">
 <!-- 配置数据连接信息 -->
 <jdbcConnection driverClass="com.mysql.jdbc.Driver"
     connectionURL="jdbc:mysql://localhost:3306/ssm-crud?useUnicode=true&amp;characterEncoding=utf-8&amp;serverTimezone=GMT％2B8"
     userId="root"
     password="root">
 </jdbcConnection>

<javaTypeResolver >
  <property name="forceBigDecimals" value="false" />
 </javaTypeResolver>

<!-- 指定java bean生成的位置 -->
 <javaModelGenerator targetPackage="com.ssm.entity" targetProject=".\src\main\java">
  <property name="enableSubPackages" value="true" />
  <property name="trimStrings" value="true" />
 </javaModelGenerator>

<!-- 指定sql映射文件生成的位置 -->
 <sqlMapGenerator targetPackage="mapper"
      targetProject=".\src\main\resources">
  <property name="enableSubPackages" value="true" />
 </sqlMapGenerator>
 <!-- 指定dao接口生成的位置 -->
 <javaClientGenerator type="XMLMAPPER"
       targetPackage="com.ssm.dao"
       targetProject=".\src\main\java">
  <property name="enableSubPackages" value="true" />
 </javaClientGenerator>
 <!-- 指定每个表的生成策略,表和类对应关系 -->
 <table tableName="tbl_emp" domainObjectName="Employee"></table>
 <table tableName="tbl_dept" domainObjectName="Department"></table>
</context>
</generatorConfiguration>

10.使用逆向工程生成接口、实体类、映射文件

MBGTest.java

import org.mybatis.generator.api.MyBatisGenerator;
import org.mybatis.generator.config.Configuration;
import org.mybatis.generator.config.xml.ConfigurationParser;
import org.mybatis.generator.exception.InvalidConfigurationException;
import org.mybatis.generator.exception.XMLParserException;
import org.mybatis.generator.internal.DefaultShellCallback;

import java.io.File;
import java.io.IOException;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;

public class MBGTest {
public static void main(String[] args) throws IOException, XMLParserException, InvalidConfigurationException, SQLException, InterruptedException {
 List<String> warnings = new ArrayList<String>();
 boolean overwrite = true;
 File configFile = new File("mbg.xml");
 ConfigurationParser cp = new ConfigurationParser(warnings);
 Configuration config = cp.parseConfiguration(configFile);
 DefaultShellCallback callback = new DefaultShellCallback(overwrite);
 MyBatisGenerator myBatisGenerator = new MyBatisGenerator(config, callback, warnings);
 myBatisGenerator.generate(null);
}
}

逆向工程生成

来源：https://blog.csdn.net/qq_41150890/article/details/108419455?