SSM整合案例(超详细)「建议收藏」

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SSM整合案例(超详细)

  • 环境准备
    • 前提须知
    • 创建数据库和表结构
    • 创建 Maven 工程 ssm
    • 导入坐标并建立依赖
    • 编写实体类
    • 编写持久层接口
    • 编写业务层接口
    • 编写业务层实现类
    • 编写 Controller
  • 整合步骤
    • 保证 Spring 框架在 web 工程中独立运行
      • 第一步:编写 spring 配置文件并导入约束
      • 第二步:使用注解配置业务层
      • 第三步:导入log4j.properties配置文件
      • 第四步:测试 spring 能否独立运行
    • 保证 SpringMVC 在 web 工程中独立运行
      • 第一步:在 web.xml 中配置核心控制器(DispatcherServlet)
      • 第二步:编写 SpringMVC 的配置文件
      • 第三步:编写 Controller 和 jsp 页面
      • 第四步:部署tomcat服务器
      • 启动服务器,进行测试
    • Spring 整合 SpringMVC 的框架
      • 第一步:配置监听器实现启动服务创建容器
      • 第二步:在controller中注入service对象,调用service对象的方法进行测试
    • 保证 MyBatis 框架在 web 工程中独立运
      • 第一步:在web项目中编写SqlMapConfig.xml的配置文件,编写核心配置文件
      • 第二步:在AccountDao接口的方法上添加注解,编写SQL语句
      • 第三步:编写测试的方法
    • Spring 整合 MyBatis 框架
      • 第一步:把SqlMapConfig.xml配置文件中的内容配置到applicationContext.xml配置文件中
      • 第二步:在applicationContext.xml配置文件中配置 spring 的事务
      • 第三步:在AccountDao接口中添加@Repository注解
      • 第四步:在service中注入dao对象
      • 第五步:修改 AccountController 代码
      • 第五步:修改 list.jsp 代码,实现显示账户信息
      • 第六步:测试查询
      • 第七步:测试保存

环境准备

前提须知

在SSM整合的时候,我们是用Spring框架去整合SpringMVC框架和MyBatis框架。

创建数据库和表结构

代码语言:javascript复制
create database ssm;
create table account(
id int primary key auto_increment,
name varchar(100),
money double(7,2)
);

创建 Maven 工程 ssm

目录结构:

导入坐标并建立依赖

MyBatis 和 Spring 的版本对应关系

pom.xml

代码语言:javascript复制
<?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.keafmd</groupId>
    <artifactId>ssm</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>war</packaging>

    <name>ssm 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>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>
        <spring.version>5.2.7.RELEASE</spring.version>
        <slf4j.version>1.7.6</slf4j.version>
        <log4j.version>1.2.12</log4j.version>
        <mysql.version>5.1.49</mysql.version>
        <mybatis.version>3.4.5</mybatis.version>
    </properties>

    <dependencies>
        <!-- spring -->
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>1.9.5</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aop</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-tx</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
            <scope>compile</scope>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>${mysql.version}</version>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>servlet-api</artifactId>
            <version>2.5</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>javax.servlet.jsp</groupId>
            <artifactId>jsp-api</artifactId>
            <version>2.0</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>jstl</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </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>${slf4j.version}</version>
        </dependency>
        <!-- log end -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>${mybatis.version}</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>1.3.2</version>
        </dependency>
        <dependency>
            <groupId>c3p0</groupId>
            <artifactId>c3p0</artifactId>
            <version>0.9.1.1</version>
            <type>jar</type>
            <scope>compile</scope>
        </dependency>
    </dependencies>

    <build>
        <finalName>ssm</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>

编写实体类

Account:

代码语言:javascript复制
package com.keafmd.domain;

import java.io.Serializable;

/** * Keafmd * * @ClassName: Account * @Description: 账户实体类 * @author: 牛哄哄的柯南 * @date: 2021-02-17 21:03 */
public class Account implements Serializable { 
   

    private Integer id;
    private String name;
    private Double money;

    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 Double getMoney() { 
   
        return money;
    }

    public void setMoney(Double money) { 
   
        this.money = money;
    }

    @Override
    public String toString() { 
   
        return "Account{"  
                "id="   id  
                ", name='"   name   '''  
                ", money="   money  
                '}';
    }
}

编写持久层接口

代码语言:javascript复制
package com.keafmd.dao;

import com.keafmd.domain.Account;
import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Select;
import org.springframework.stereotype.Repository;

import java.util.List;

/** * Keafmd * * @ClassName: AccountDao * @Description: 账户dao接口 * @author: 牛哄哄的柯南 * @date: 2021-02-17 21:05 */
public interface AccountDao { 
   

    //查询所有账户
    public List<Account> findAll();

    //保存账户
    public void saveAccount(Account account);

}

编写业务层接口

代码语言:javascript复制
package com.keafmd.service;
import com.keafmd.domain.Account;
import java.util.List;

/** * Keafmd * * @ClassName: AccountService * @Description: * @author: 牛哄哄的柯南 * @date: 2021-02-17 21:15 */

public interface AccountService { 
   

    //查询所有账户
    public List<Account> findAll();

    //保存账户
    public void saveAccount(Account account);

}

编写业务层实现类

代码语言:javascript复制
package com.keafmd.service.impl;

import com.keafmd.dao.AccountDao;
import com.keafmd.domain.Account;
import com.keafmd.service.AccountService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

/** * Keafmd * * @ClassName: AccountServiceImpl * @Description: 账户的业务层实现类 * @author: 牛哄哄的柯南 * @date: 2021-02-17 21:16 */
public class AccountServiceImpl implements AccountService { 
   

    @Override
    public List<Account> findAll() { 
   
        System.out.println("业务层,查询所有。。。");
        return null;
    }

    @Override
    public void saveAccount(Account account) { 
   
        System.out.println("业务层,保存账户。。。");
    }
}

编写 Controller

代码语言:javascript复制
package com.keafmd.controller;

/** * Keafmd * * @ClassName: AccountController * @Description: 账户控制器 web * @author: 牛哄哄的柯南 * @date: 2021-02-17 21:19 */
public class AccountController { 
   

}

整合步骤

保证 Spring 框架在 web 工程中独立运行

第一步:编写 spring 配置文件并导入约束

applicationContext.xml:

代码语言:javascript复制
<?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">

    <!-- 开启注解扫描,要扫描的是service和dao层的注解,要忽略web层注解,因为web层让SpringMVC框架去管理 -->
    <context:component-scan base-package="com.keafmd">
        <!-- 配置要忽略的注解 -->
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>

</beans>

第二步:使用注解配置业务层

AccountServiceImpl:

代码语言:javascript复制
package com.keafmd.service.impl;

import com.keafmd.dao.AccountDao;
import com.keafmd.domain.Account;
import com.keafmd.service.AccountService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

/** * Keafmd * * @ClassName: AccountServiceImpl * @Description: 账户的业务层实现类 * @author: 牛哄哄的柯南 * @date: 2021-02-17 21:16 */
@Service("accountService")
public class AccountServiceImpl implements AccountService { 
   


    @Override
    public List<Account> findAll() { 
   
        System.out.println("业务层,查询所有。。。");
        return null;
    }

    @Override
    public void saveAccount(Account account) { 
   
        System.out.println("业务层,保存账户。。。");
    }
}

第三步:导入log4j.properties配置文件

代码语言:javascript复制
# Set root category priority to INFO and its only appender to CONSOLE.
#log4j.rootCategory=INFO, CONSOLE            debug   info   warn error fatal
log4j.rootCategory=info, CONSOLE, LOGFILE

# Set the enterprise logger category to FATAL and its only appender to CONSOLE.
log4j.logger.org.apache.axis.enterprise=FATAL, CONSOLE

# CONSOLE is set to be a ConsoleAppender using a PatternLayout.
log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout
log4j.appender.CONSOLE.layout.ConversionPattern=%d{ISO8601} %-6r [.15t] %-5p 0.30c %x - %mn

# LOGFILE is set to be a File appender using a PatternLayout.
log4j.appender.LOGFILE=org.apache.log4j.FileAppender
log4j.appender.LOGFILE.File=d:axis.log
log4j.appender.LOGFILE.Append=true
log4j.appender.LOGFILE.layout=org.apache.log4j.PatternLayout
log4j.appender.LOGFILE.layout.ConversionPattern=%d{ISO8601} %-6r [.15t] %-5p 0.30c %x - %mn

第四步:测试 spring 能否独立运行

测试代码:

代码语言:javascript复制
package com.keafmd.test;

import com.keafmd.service.AccountService;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

/** * Keafmd * * @ClassName: TestSpring * @Description: 测试类 * @author: 牛哄哄的柯南 * @date: 2021-02-17 22:37 */
public class TestSpring { 
   

    @Test
    public void run1(){ 
   
        //加载配置文件
        ApplicationContext ac = new ClassPathXmlApplicationContext("classpath:applicationContext.xml");
        //获取对象
        AccountService as = (AccountService)ac.getBean("accountService");
        //调用方法
        as.findAll();

    }
}

运行结果:

代码语言:javascript复制
业务层,查询所有。。。

Process finished with exit code 0

保证 SpringMVC 在 web 工程中独立运行

第一步:在 web.xml 中配置核心控制器(DispatcherServlet)

web.xml:

代码语言:javascript复制
<!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>

    <!-- 配置前端控制器:服务器启动必须加载,需要加载springmvc.xml配置文件 -->
    <servlet>
        <servlet-name>dispatcherServlet</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <!-- 配置初始化参数,加载springmvc.xml配置文件 -->
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:springmvc.xml</param-value>
        </init-param>
        <!-- 启动服务器,创建该servlet -->
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>dispatcherServlet</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

    <!--解决中文乱码的过滤器-->
    <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>

第二步:编写 SpringMVC 的配置文件

springmvc.xml:

代码语言:javascript复制
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">

    <!-- 开启注解扫描,扫描controller的注解,别的不扫描 -->
    <context:component-scan base-package="com.keafmd">
        <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>
    <!-- 配置视图解析器 -->
    <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <!-- JSP文件所在的目录 -->
        <property name="prefix" value="/WEB-INF/pages/"/>
        <!-- 文件的后缀名 -->
        <property name="suffix" value=".jsp"/>
    </bean>

    <!-- 过滤静态资源,设置静态资源不过滤 -->
    <mvc:resources location="/css/" mapping="/css/**"/>
    <mvc:resources location="/images/" mapping="/images/**"/>
    <mvc:resources location="/js/" mapping="/js/**"/>

    <!-- 开启对SpringMVC注解的支持 -->
    <mvc:annotation-driven/>

</beans>

第三步:编写 Controller 和 jsp 页面

index.jsp:

代码语言:javascript复制
<%--
  Created by IntelliJ IDEA.
  User: Keafmd
  Date: 2021/2/17
  Time: 23:20
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>

    <a href="account/findAll">测试查询</a>

</body>
</html>

AccountController:

代码语言:javascript复制
package com.keafmd.controller;

import com.keafmd.domain.Account;
import com.keafmd.service.AccountService;
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 javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.List;

/** * Keafmd * * @ClassName: AccountController * @Description: 账户控制器 web * @author: 牛哄哄的柯南 * @date: 2021-02-17 21:19 */
@Controller
@RequestMapping("/account")
public class AccountController { 
   

    /** * 查询所有 * @param * @return */
    @RequestMapping("/findAll")
    public String findAll(){ 
   
        System.out.println("表现层,查询所有账户信息。。。");
        return "list";
    }

}

list.jsp:

代码语言:javascript复制
<%--
  Created by IntelliJ IDEA.
  User: Keafmd
  Date: 2021/2/18
  Time: 15:50
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>

    <h1>查询所有的账户</h1>

</body>
</html>

第四步:部署tomcat服务器

启动服务器,进行测试

控制台输出:

代码语言:javascript复制
表现层,查询所有账户信息。。。

Spring 整合 SpringMVC 的框架

目的:在controller中能成功的调用service对象中的方法。

第一步:配置监听器实现启动服务创建容器

在web.xml添加监听器:

代码语言:javascript复制
<!-- 配置 spring 提供的监听器,用于启动服务时加载容器 。 该监听器只能加载 WEB-INF 目录中名称为 applicationContext.xml 的配置文件 -->
<listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- 手动指定 spring 配置文件位置 -->
<context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:applicationContext.xml</param-value>
</context-param>

web.xml:

代码语言:javascript复制
<!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>

    <!-- 配置 spring 提供的监听器,用于启动服务时加载容器 。 该监听器只能加载 WEB-INF 目录中名称为 applicationContext.xml 的配置文件 -->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    <!-- 手动指定 spring 配置文件位置 -->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:applicationContext.xml</param-value>
    </context-param>


    <!-- 配置前端控制器:服务器启动必须加载,需要加载springmvc.xml配置文件 -->
    <servlet>
        <servlet-name>dispatcherServlet</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <!-- 配置初始化参数,加载springmvc.xml配置文件 -->
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:springmvc.xml</param-value>
        </init-param>
        <!-- 启动服务器,创建该servlet -->
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>dispatcherServlet</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

    <!--解决中文乱码的过滤器-->
    <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>

第二步:在controller中注入service对象,调用service对象的方法进行测试

代码语言:javascript复制
package com.keafmd.controller;

import com.keafmd.domain.Account;
import com.keafmd.service.AccountService;
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 javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.List;

/** * Keafmd * * @ClassName: AccountController * @Description: 账户控制器 web * @author: 牛哄哄的柯南 * @date: 2021-02-17 21:19 */
@Controller
@RequestMapping("/account")
public class AccountController { 
   

    @Autowired
    private AccountService accountService;

    /** * 查询所有 * @return */
    @RequestMapping("/findAll")
    public String findAll(){ 
   
        System.out.println("表现层,查询所有账户信息。。。");
        //调用service的方法
        accountService.findAll();
        return "list";
    }
}

运行结果: 控制台输出:

代码语言:javascript复制
表现层,查询所有账户信息。。。
业务层,查询所有。。。

保证 MyBatis 框架在 web 工程中独立运行

第一步:在web项目中编写SqlMapConfig.xml的配置文件,编写核心配置文件

SqlMapConfig.xml:

代码语言:javascript复制
<?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>
    <!-- 配置连接数据库的信息 -->
    <properties resource="jdbcConfig.properties"></properties>
    <!-- 配置mybatis的环境 -->
    <environments default="mysql">
        <environment id="mysql">
            <!-- 配置事务管理 -->
            <transactionManager type="JDBC"></transactionManager>
            <dataSource type="pooled">
                <property name="driver" value="${jdbc.driver}"/>
                <property name="url" value="${jdbc.url}"/>
                <property name="username" value="${jdbc.username}"/>
                <property name="password" value="${jdbc.password}"/>
            </dataSource>
        </environment>
    </environments>

    <!-- 指定映射文件位置 -->
    <mappers>
        <!--<mapper class="com.keafmd.dao.IAccountDao"/> <mapper class="com.keafmd.dao.IUserDao"/>-->
        <package name="com.keafmd.dao"/>
    </mappers>
</configuration>

jdbcConfig.properties:

代码语言:javascript复制
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/ssm
jdbc.username=root
jdbc.password=root

第二步:在AccountDao接口的方法上添加注解,编写SQL语句

代码语言:javascript复制
package com.keafmd.dao;

import com.keafmd.domain.Account;
import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Select;
import org.springframework.stereotype.Repository;

import java.util.List;

/** * Keafmd * * @ClassName: AccountDao * @Description: 账户dao接口 * @author: 牛哄哄的柯南 * @date: 2021-02-17 21:05 */
public interface AccountDao { 
   

    //查询所有账户
    @Select("select * from account")
    public List<Account> findAll();

    //保存账户
    @Insert("insert into account(name,money) values(#{name},#{money})")
    public void saveAccount(Account account);

}

第三步:编写测试的方法

TestMybatis:

代码语言:javascript复制
package com.keafmd.test;

import com.keafmd.dao.AccountDao;
import com.keafmd.domain.Account;
import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;

import java.io.InputStream;
import java.util.List;


/** * Keafmd * * @ClassName: TestMybatis * @Description: 测试Mybatis * @author: 牛哄哄的柯南 * @date: 2021-02-18 16:37 */
public class TestMybatis { 
   

    private InputStream in;
    private SqlSessionFactory factory;
    private SqlSession session;
    private AccountDao accountDao;

    @Before
    public void init() throws Exception{ 
   
        //加载配置文件
        in = Resources.getResourceAsStream("SqlMapConfig.xml");
        //创建SqlSessionFactory对象
        factory = new SqlSessionFactoryBuilder().build(in);
        //创建SqlSession对象
        session = factory.openSession();
        //获取到代理对象
        accountDao = session.getMapper(AccountDao.class);
    }

    @After
    public void destory() throws Exception{ 
   
        session.commit();
        session.close();
        in.close();
    }

    /** * 查询所有 */
    @Test
    public void run1(){ 
   
        List<Account> accounts = accountDao.findAll();
        for (Account account : accounts) { 
   
            System.out.println(account);
        }
    }

    /** * 测试保存 */
    @Test
    public void saveAccount(){ 
   
        Account account = new Account();
        account.setName("毛利小五郎");
        account.setMoney(800.00);
// account.setMoney(800d);

        accountDao.saveAccount(account);
    }
}

运行run1():

代码语言:javascript复制
Account{ 
   id=1, name='keafmd', money=9000.0}
Account{ 
   id=2, name='小兰', money=8000.0}
Account{ 
   id=3, name='新一', money=8000.0}
Account{ 
   id=4, name='毛利小五郎', money=800.0}
Account{ 
   id=5, name='怪盗基德', money=660.0}
Account{ 
   id=6, name='某某', money=290.0}

Process finished with exit code 0

Spring 整合 MyBatis 框架

整合思路:把 mybatis 配置文件(SqlMapConfig.xml)中内容配置到 spring 配置文件中同时,把 mybatis 配置文件的内容清掉。

第一步:把SqlMapConfig.xml配置文件中的内容配置到applicationContext.xml配置文件中

把以下内容添加到applicationContext.xml配置文件中:

代码语言:javascript复制
<!--Spring整合Mybatisl框架-->
<!-- 配置C3P0的连接池对象 -->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
    <property name="driverClass" value="com.mysql.jdbc.Driver"/>
    <property name="jdbcUrl" value="jdbc:mysql:///ssm"/>
    <property name="user" value="root"/>
    <property name="password" value="root"/>
</bean>
<!-- 配置SqlSession的工厂 -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
    <property name="dataSource" ref="dataSource"/>
</bean>
<!-- 配置扫描dao的包 -->
<bean id="mapperScanner" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
    <property name="basePackage" value="com.keafmd.dao"/>
</bean>

<!--SqlMapConfig.xml和jdbcConfig.properties可以删除了-->

SqlMapConfig.xml和jdbcConfig.properties可以删除了。

第二步:在applicationContext.xml配置文件中配置 spring 的事务

把以下内容添加到applicationContext.xml配置文件中:

代码语言:javascript复制
<!--配置Spring框架声明式事务管理-->
<!--配置事务管理器-->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
    <property name="dataSource" ref="dataSource"></property>
</bean>
<!-- 配置事务的通知 -->
<tx:advice id="txAdvice" transaction-manager="transactionManager">
    <tx:attributes>
        <tx:method name="find*" propagation="SUPPORTS" read-only="true"/>
        <tx:method name="*" isolation="DEFAULT"/>
    </tx:attributes>
</tx:advice>
<!-- 配置AOP增强 -->
<aop:config>
    <!--<aop:advisor advice-ref="txAdvice" pointcut="execution(* com.keafmd.service.impl.*.*(..))"/>-->
    <!-- 配置切入点表达式 -->
    <aop:pointcut expression="execution(* com.keafmd.service.impl.*.*(..))" id="pt1"/>
    <!-- 建立通知和切入点表达式的关系 -->
    <aop:advisor advice-ref="txAdvice" pointcut-ref="pt1"/>
</aop:config>

applicationContext.xml:

代码语言:javascript复制
<?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">

    <!-- 开启注解扫描,要扫描的是service和dao层的注解,要忽略web层注解,因为web层让SpringMVC框架 去管理 -->
    <context:component-scan base-package="com.keafmd">
        <!-- 配置要忽略的注解 -->
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>

    <!--Spring整合Mybatisl框架-->
    <!-- 配置C3P0的连接池对象 -->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="driverClass" value="com.mysql.jdbc.Driver"/>
        <property name="jdbcUrl" value="jdbc:mysql:///ssm"/>
        <property name="user" value="root"/>
        <property name="password" value="18044229"/>
    </bean>
    <!-- 配置SqlSession的工厂 -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
    </bean>
    <!-- 配置扫描dao的包 -->
    <bean id="mapperScanner" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.keafmd.dao"/>
    </bean>

    <!--SqlMapConfig.xml和jdbcConfig.properties可以删除了-->

    <!--配置Spring框架声明式事务管理-->
    <!--配置事务管理器-->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"></property>
    </bean>
    <!-- 配置事务的通知 -->
    <tx:advice id="txAdvice" transaction-manager="transactionManager">
        <tx:attributes>
            <tx:method name="find*" propagation="SUPPORTS" read-only="true"/>
            <tx:method name="*" isolation="DEFAULT"/>
        </tx:attributes>
    </tx:advice>
    <!-- 配置AOP增强 -->
    <aop:config>
        <!--<aop:advisor advice-ref="txAdvice" pointcut="execution(* com.keafmd.service.impl.*.*(..))"/>-->
        <!-- 配置切入点表达式 -->
        <aop:pointcut expression="execution(* com.keafmd.service.impl.*.*(..))" id="pt1"/>
        <!-- 建立通知和切入点表达式的关系 -->
        <aop:advisor advice-ref="txAdvice" pointcut-ref="pt1"/>
    </aop:config>


</beans>

第三步:在AccountDao接口中添加@Repository注解

AccountDao:

代码语言:javascript复制
package com.keafmd.dao;

import com.keafmd.domain.Account;
import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Select;
import org.springframework.stereotype.Repository;

import java.util.List;

/** * Keafmd * * @ClassName: AccountDao * @Description: 账户dao接口 * @author: 牛哄哄的柯南 * @date: 2021-02-17 21:05 */
@Repository
public interface AccountDao { 
   

    //查询所有账户
    @Select("select * from account")
    public List<Account> findAll();

    //保存账户
    @Insert("insert into account(name,money) values(#{name},#{money})")
    public void saveAccount(Account account);

}

第四步:在service中注入dao对象

AccountServiceImpl:

代码语言:javascript复制
package com.keafmd.service.impl;

import com.keafmd.dao.AccountDao;
import com.keafmd.domain.Account;
import com.keafmd.service.AccountService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

/** * Keafmd * * @ClassName: AccountServiceImpl * @Description: 账户的业务层实现类 * @author: 牛哄哄的柯南 * @date: 2021-02-17 21:16 */
@Service("accountService")
public class AccountServiceImpl implements AccountService { 
   

    @Autowired
    private AccountDao accountDao;

    @Override
    public List<Account> findAll() { 
   
        System.out.println("业务层,查询所有。。。");
        return accountDao.findAll();
    }

    @Override
    public void saveAccount(Account account) { 
   
        System.out.println("业务层,保存账户。。。");
        accountDao.saveAccount(account);
    }
}

第五步:修改 AccountController 代码

代码语言:javascript复制
package com.keafmd.controller;

import com.keafmd.domain.Account;
import com.keafmd.service.AccountService;
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 javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.List;

/** * Keafmd * * @ClassName: AccountController * @Description: 账户控制器 web * @author: 牛哄哄的柯南 * @date: 2021-02-17 21:19 */
@Controller
@RequestMapping("/account")
public class AccountController { 
   

    @Autowired
    private AccountService accountService;

    /** * 查询所有 * @param model * @return */
    @RequestMapping("/findAll")
    public String findAll(Model model){ 
   
        System.out.println("表现层,查询所有账户信息。。。");
        //调用service的方法
        List<Account> list = accountService.findAll();
        model.addAttribute("list",list);
        return "list";
    }

    /** * 保存 * @param account * @param request * @param response * @throws IOException */
    @RequestMapping("/save")
    public void save(Account account, HttpServletRequest request, HttpServletResponse response) throws IOException { 
   
        accountService.saveAccount(account);
        response.sendRedirect(request.getContextPath() "/account/findAll");
        return;
    }
}

第五步:修改 list.jsp 代码,实现显示账户信息

代码语言:javascript复制
<%--
  Created by IntelliJ IDEA.
  User: Keafmd
  Date: 2021/2/18
  Time: 15:50
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" isELIgnored="false" %>
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<html>
<head>
    <title>Title</title>
</head>
<body>

    <h1>查询所有的账户</h1>
    <%--${ 
   list}--%>

    <c:forEach items="${list}" var="account">
        ${ 
   account.name}
        ${ 
   account.money}
    </c:forEach>

</body>
</html>

第六步:测试查询

第七步:测试保存

修改index.jsp代码,添加测试保存的代码:

代码语言:javascript复制
<%--
  Created by IntelliJ IDEA.
  User: Keafmd
  Date: 2021/2/17
  Time: 23:20
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>

    <a href="account/findAll">测试查询</a>

    <h1>测试保存</h1>
    <form action="account/save" method="post">
        姓名:<input type="text" name="name" /><br/>
        金额:<input type="text" name="money" /><br/>
        <input type="submit" value="保存">
    </form>

</body>
</html>

修改 AccountController 代码,添加save方法:

代码语言:javascript复制
package com.keafmd.controller;

import com.keafmd.domain.Account;
import com.keafmd.service.AccountService;
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 javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.List;

/** * Keafmd * * @ClassName: AccountController * @Description: 账户控制器 web * @author: 牛哄哄的柯南 * @date: 2021-02-17 21:19 */
@Controller
@RequestMapping("/account")
public class AccountController { 
   

    @Autowired
    private AccountService accountService;

    /** * 查询所有 * @param model * @return */
    @RequestMapping("/findAll")
    public String findAll(Model model){ 
   
        System.out.println("表现层,查询所有账户信息。。。");
        //调用service的方法
        List<Account> list = accountService.findAll();
        model.addAttribute("list",list);
        return "list";
    }

    /** * 保存 * @param account * @param request * @param response * @throws IOException */
    @RequestMapping("/save")
    public void save(Account account, HttpServletRequest request, HttpServletResponse response) throws IOException { 
   
        accountService.saveAccount(account);
        response.sendRedirect(request.getContextPath() "/account/findAll");
        return;
    }
}

测试结果:

以上就是SSM整合案例(超详细)的全部内容。

加油!

共同努力!

Keafmd

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