SSM整合

我会带着你远行 2024-03-26 10:36 6阅读 0赞

#### 文章目录 ####

*  前言
 *  一、导入依赖
 *  二、编写配置文件
 *   *  1.db.properties
     *  2.log4j.properties
     *  3.mybatis-config.xml
     *  4.springmvc.xml
     *  5.切面通知类
     *  5.applicationContext.xml
     *  6.web.xml
     *  7.在resource文件夹下创建mapper文件包
     *  8.整体包结构
 *  总结

--------------------

## 前言 ##

SSM整合

--------------------

## 一、导入依赖 ##

<dependency>
          <groupId>junit</groupId>
          <artifactId>junit</artifactId>
          <version>4.11</version>
          <scope>test</scope>
        </dependency>
        
        <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-webmvc</artifactId>
          <version>5.3.24</version>
        </dependency>
    
        
        <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-jdbc</artifactId>
          <version>5.3.24</version>
        </dependency>
        
        <dependency>
          <groupId>org.mybatis</groupId>
          <artifactId>mybatis</artifactId>
          <version>3.5.11</version>
        </dependency>
        
        <dependency>
          <groupId>mysql</groupId>
          <artifactId>mysql-connector-java</artifactId>
          <version>5.1.47</version>
        </dependency>
        
        <dependency>
          <groupId>org.mybatis</groupId>
          <artifactId>mybatis-spring</artifactId>
          <version>2.0.7</version>
        </dependency>
        
        <dependency>
          <groupId>log4j</groupId>
          <artifactId>log4j</artifactId>
          <version>1.2.17</version>
        </dependency>
        
        <dependency>
          <groupId>com.alibaba</groupId>
          <artifactId>druid</artifactId>
          <version>1.2.9</version>
        </dependency>
        
        <dependency>
          <groupId>org.projectlombok</groupId>
          <artifactId>lombok</artifactId>
          <version>1.18.24</version>
        </dependency>
        
        <dependency>
          <groupId>org.aspectj</groupId>
          <artifactId>aspectjweaver</artifactId>
          <version>1.9.9.1</version>
        </dependency>
        
        <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-tx</artifactId>
          <version>5.3.24</version>
        </dependency>
        
        <dependency>
          <groupId>javax.servlet</groupId>
          <artifactId>servlet-api</artifactId>
          <version>2.5</version>
        </dependency>
        
        <dependency>
          <groupId>com.fasterxml.jackson.core</groupId>
          <artifactId>jackson-core</artifactId>
          <version>2.10.3</version>
        </dependency>
        <dependency>
          <groupId>com.fasterxml.jackson.core</groupId>
          <artifactId>jackson-databind</artifactId>
          <version>2.10.3</version>
        </dependency>
        
        <dependency>
          <groupId>commons-fileupload</groupId>
          <artifactId>commons-fileupload</artifactId>
          <version>1.4</version>
        </dependency>

## 二、编写配置文件 ##

### 1.db.properties ###

db.driverClassName=com.mysql.jdbc.Driver
    
    db.url=jdbc:mysql://localhost:3306/库名?useSSL=false
    
    db.username=账号
    
    db.password=密码

### 2.log4j.properties ###

log4j.rootLogger=error
    log4j.logger.com.lzl.mapper=debug,stdout
    log4j.appender.stdout=org.apache.log4j.ConsoleAppender
    log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
    log4j.appender.stdout.layout.ConversionPattern=%5p [%t] - %m%n

### 3.mybatis-config.xml ###

<?xml version="1.0" encoding="UTF-8" ?>
    <!DOCTYPE configuration
            PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
            "https://mybatis.org/dtd/mybatis-3-config.dtd">
    
    <configuration>
        <settings>
            <setting name="logImpl" value="LOG4J"/>
        </settings>
    </configuration>

### 4.springmvc.xml ###

### 5.切面通知类 ###

package com.wmj.advice;
    
    import org.aspectj.lang.ProceedingJoinPoint;
    import org.aspectj.lang.annotation.*;
    
    /**
     * --效率，是成功的核心关键--
     *
     * @Author lzl
     * @Date 2023/2/17 19:21
     */
    @Aspect
    public class EmployeeServiceAdvice {
        
        @Pointcut("execution(public * com.wmj.service.impl.*ServiceImpl.*(..))")
        public void pc(){
        }
        @Before("execution(public * com.wmj.service.impl.*ServiceImpl.*(..))")
        public void before(){
        
            System.out.println("前置通知：方法调用之前执行");
            System.out.println("记录日志");
        }
        @After("EmployeeServiceAdvice.pc()")
        public void after(){
        
            System.out.println("后置通知（最终通知），目标对象调用自己的方法后执行，无论是否发生异常都会执行");
        }
    
        @AfterReturning("EmployeeServiceAdvice.pc()")
        public void after_returning(){
        
            System.out.println("后置通知，目标对象调用自己的方法后执行，出现异常则不执行");
        }
    
        public void after_throwing(){
        
            System.out.println("异常通知，目标对象调用自己的方法出现异常执行");
        }
    
        public void around(ProceedingJoinPoint proceedingJoinPoint) throws Throwable {
        
            System.out.println("环绕通知，环绕之前...");
            proceedingJoinPoint.proceed();
            System.out.println("环绕通知，环绕之后...");
        }
    }

### 5.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
            "> 
    
    
        
        <context:property-placeholder location="classpath:db.properties"/>
    
        
        <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
            <property name="username" value="${db.username}"/>
            <property name="password" value="${db.password}"/>
            <property name="url" value="${db.url}"/>
            <property name="driverClassName" value="${db.driverClassName}"/>
        </bean>
    
        
        <context:component-scan base-package="com.wmj">
            
            <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
            <context:exclude-filter type="annotation" expression="org.springframework.web.bind.annotation.RestController"/>
        </context:component-scan>
    
        
        <bean id="sqlSessionFactoryBean" class="org.mybatis.spring.SqlSessionFactoryBean">
            
            <property name="dataSource" ref="dataSource"/>
            
            <property name="configLocation" value="classpath:mybatis-config.xml"/>
    
            
            <property name="mapperLocations" value="classpath:mapper/*.xml"/>
            
            <property name="typeAliasesPackage" value="com.wmj.pojo"/>
        </bean>
    
        
        <bean id="mapperScannerConfigurer" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
            <property name="basePackage" value="com.wmj.mapper"/>
        </bean>
    
        
        
        <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
            <property name="dataSource" ref="dataSource"/>
        </bean>
        
        <tx:annotation-driven/>
    
        
     
        <bean id="employeeAdvice" class="com.wmj.advice.EmployeeServiceAdvice"/>
        
        <aop:config>
            
            <aop:pointcut id="pc"
                          expression="execution(public * com.wmj.service.impl.*ServiceImpl.*(..))"/>
            
            <aop:aspect ref="employeeAdvice">
                
                <aop:before method="before" pointcut-ref="pc"/>
                <aop:after-returning method="after_returning" pointcut-ref="pc"/>
            </aop:aspect>
        </aop:config>
    
    
    </beans>

### 6.web.xml ###

<!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>
      
      <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:applicationContext.xml</param-value>
      </context-param>
    
      <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
      </listener>
    
      
      <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>
      </servlet>
    
      <servlet-mapping>
        <servlet-name>dispatcherServlet</servlet-name>
        <url-pattern>/</url-pattern>
      </servlet-mapping>
    
    </web-app>

### 7.在resource文件夹下创建mapper文件包 ###

![在这里插入图片描述][c324df23a5954f9d92d3d766dfdab6f0.png]

> 如果mapper.xml文件和mapper接口在同一包下，则不需要配置此步。相应的，在applicationContext.xml文件中的sqlsessionFactory也不需要配置xml的加载位置。但是需要在pom.xml文件的插件标签（bulid）中，设置资源编译，防止编译出现不编译mapper.xml文件的问题

**资源编译配置**

### 8.整体包结构 ###

![在这里插入图片描述][26a333e9f8b5401ea382546703690324.png]

到此完成

--------------------

## 总结 ##

SSM整合的方法大同小异，主要是思路要捋清，不少配置，按部就班就可以完成。

[c324df23a5954f9d92d3d766dfdab6f0.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/26/abecd50bc1ed42cc9a2c2e5fa3ec97cd.png
[26a333e9f8b5401ea382546703690324.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/26/7ef732724ef3454bb8c02da5f14df03d.png