九、SSM整合介绍-Eclipse整合（2）

Daniel521-Spark2024-07-06 8:12

🌻🌻目录

一、SSM 整合

1、整合：将多种框架合并到一起，完成项目需求

2、SSM整合：Springmvc + Spring + Mybatis进行整合
SSM（SpringMVC+Spring+MyBatis）是目前市场上較流行的开发web项目的框架，它由SpringMVC、Spring、MyBatis整合而成。

  • SpringMVC框架负责接收浏览器发送的请求，并响应浏览器数据；
  • Spring框架使用其核心IOC思想管理服务器中各个组件，使用AOP思想面向切面编程，在不改变源码的基础上实现功能增强；
  • MyBatis框架封装JDBC，负责访问数据库，完成持久化操作。
  • (1) SpringMVC负责与客户交互，请求和响应处理
  • (2) Spring负责将SpringMVC和Mybatis联系起来，中间的桥梁、纽带
  • (3) Mybatis负责与数据库交互

二、SSM整合入门

目的：将前面所学知识融合、全面的认识、框架的整合如何实现、项目增删改查的需求在整合项目中如何实现

三、整合的实现

3.1、创建数据库以及表

sql 复制代码 
CREATE DATABASE ssm;
USE ssm;
CREATE TABLE `t_emp` (
`emp_id` int(11) NOT NULL AUTO_INCREMENT,
`emp_name` varchar(20) DEFAULT NULL,
`age` int(11) DEFAULT NULL,
`sex` char(1) DEFAULT NULL,
`email` varchar(50) DEFAULT NULL,
PRIMARY KEY (`emp_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8

3.2、创建项目

前提：maven中jdk版本与系统一致 👉👉Maven中jdk版本统一的配置

1、创建项目 ssmbuild-poly

报错：

解决：

手动添加webapp/WEB-INF

注意：如果上面忘记配置maven中jdk版本，则在项目中可单个操作如下：

操作系统版本 1.8 如下：

(1)

(2) 移除不需要的版本

(3) 添加需要（系统）的版本

最终修改后是这样的：

3.3、依赖

ssmbuild-poly/pom.xml

xml 复制代码 
<properties>
    <spring.version>5.3.1</spring.version>
</properties>
<dependencies>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context</artifactId>
        <version>${spring.version}</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-beans</artifactId>
        <version>${spring.version}</version>
    </dependency>
    <!--springmvc-->
    <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-jdbc</artifactId>
        <version>${spring.version}</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-aspects</artifactId>
        <version>${spring.version}</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-test</artifactId>
        <version>${spring.version}</version>
    </dependency>
    <!-- Mybatis核心 -->
    <dependency>
        <groupId>org.mybatis</groupId>
        <artifactId>mybatis</artifactId>
        <version>3.5.7</version>
    </dependency>
    <!--mybatis和spring的整合包-->
    <dependency>
        <groupId>org.mybatis</groupId>
        <artifactId>mybatis-spring</artifactId>
        <version>2.0.6</version>
    </dependency>
    <!-- 连接池 -->
    <dependency>
        <groupId>com.alibaba</groupId>
        <artifactId>druid</artifactId>
        <version>1.0.9</version>
    </dependency>
    <!-- junit测试 -->
    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>4.12</version>
        <scope>test</scope>
    </dependency>
    <!-- MySQL驱动 -->
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>8.0.16</version>
    </dependency>
    <!-- log4j日志 -->
    <dependency>
        <groupId>log4j</groupId>
        <artifactId>log4j</artifactId>
        <version>1.2.17</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/com.github.pagehelper/pagehelper -->
    <dependency>
        <groupId>com.github.pagehelper</groupId>
        <artifactId>pagehelper</artifactId>
        <version>5.2.0</version>
    </dependency>
    <!-- 日志 -->
    <dependency>
        <groupId>ch.qos.logback</groupId>
        <artifactId>logback-classic</artifactId>
        <version>1.2.3</version>
    </dependency>
    <!-- ServletAPI -->
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>javax.servlet-api</artifactId>
        <version>3.1.0</version>
        <scope>provided</scope>
    </dependency>
    <dependency>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-databind</artifactId>
        <version>2.12.1</version>
    </dependency>
    <dependency>
        <groupId>commons-fileupload</groupId>
        <artifactId>commons-fileupload</artifactId>
        <version>1.3.1</version>
    </dependency>
    <!-- Spring5和Thymeleaf整合包 -->
    <dependency>
        <groupId>org.thymeleaf</groupId>
        <artifactId>thymeleaf-spring5</artifactId>
        <version>3.0.12.RELEASE</version>
    </dependency>

    <dependency>
        <groupId>org.projectlombok</groupId>
        <artifactId>lombok</artifactId>
        <version>1.18.24</version>
    </dependency>
</dependencies>

3.4、项目配置

（1）ssmbuild-poly/src/main/webapp/WEB-INF/web.xml

xml 复制代码 
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns="http://java.sun.com/xml/ns/javaee"
	xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 
			http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
	version="2.5">
	<display-name>ssmbuild-poly</display-name>
	<welcome-file-list>
		<welcome-file>index.html</welcome-file>
		<welcome-file>index.htm</welcome-file>
		<welcome-file>index.jsp</welcome-file>
		<welcome-file>default.html</welcome-file>
		<welcome-file>default.htm</welcome-file>
		<welcome-file>default.jsp</welcome-file>
	</welcome-file-list>

	<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>
		<init-param>
			<param-name>forceEncoding</param-name>
			<param-value>true</param-value>
		</init-param>
	</filter>
	<filter-mapping>
		<filter-name>CharacterEncodingFilter</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>

	<filter>
		<filter-name>HiddenHttpMethodFilter</filter-name>
		<filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class>
	</filter>
	<filter-mapping>
		<filter-name>HiddenHttpMethodFilter</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>

	<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>

	<context-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>classpath:spring.xml</param-value>
	</context-param>

	<listener>
		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
	</listener>

</web-app>

(2) 在resources下面创建 springmvc.xml

ssmbuild-poly/src/main/resources/

springmvc.xml

xml 复制代码 
<?xml version="1.0" encoding="UTF-8"?>
<!--suppress ALL -->
<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
       https://www.springframework.org/schema/context/spring-context.xsd
       http://www.springframework.org/schema/mvc
       https://www.springframework.org/schema/mvc/spring-mvc.xsd">

    <context:component-scan base-package="com.guigu.controller">
    </context:component-scan>

    <!--配置视图解析器-->
    <bean id="viewResolver"
          class="org.thymeleaf.spring5.view.ThymeleafViewResolver">
        <property name="order" value="1"/>
        <property name="characterEncoding" value="UTF-8"/>
        <property name="templateEngine">
            <bean class="org.thymeleaf.spring5.SpringTemplateEngine">
                <property name="templateResolver">
                    <bean
                            class="org.thymeleaf.spring5.templateresolver.SpringResourceTemplateResolver">
                        <!-- 视图前缀 -->
                        <property name="prefix" value="/WEB-INF/templates/"/>
                        <!-- 视图后缀 -->
                        <property name="suffix" value=".html"/>
                        <property name="templateMode" value="HTML5"/>
                        <property name="characterEncoding" value="UTF-8" />
                    </bean>
                </property>
            </bean>
        </property>
    </bean>

    <mvc:view-controller path="/" view-name="index"></mvc:view-controller>

    <mvc:default-servlet-handler></mvc:default-servlet-handler>

    <mvc:annotation-driven></mvc:annotation-driven>

</beans>

(2) 在resources下面创建 spring.xml

ssmbuild-poly/src/main/resources/

spring.xml

xml 复制代码 
<?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: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
       https://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd">

    <context:component-scan base-package="com.guigu">
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"></context:exclude-filter>
    </context:component-scan>

   <context:property-placeholder location="classpath:jdbc.properties"></context:property-placeholder>

    <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
        <property name="driverClassName" value="${jdbc.driverClassName}"/>
        <property name="url" value="${jdbc.url}"></property>
        <property name="username" value="${jdbc.username}"></property>
        <property name="password" value="${jdbc.password}"></property>
    </bean>

    <bean  id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
       <property name="dataSource" ref="dataSource"></property>
     </bean>
    <!--开启事务注解-->
    <tx:annotation-driven transaction-manager="transactionManager"/>
    
    <bean id="SessionFactoryBean" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="configLocation" value="classpath:mybatis-config.xml"></property>
        <property name="dataSource" ref="dataSource"></property>
        <property name="typeAliasesPackage" value="com.guigu.pojo"></property>

    </bean>

    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.guigu.mapper"></property>
    </bean>
</beans>

(3) 在resources下面创建 mybatis.xml

ssmbuild-poly/src/main/resources/

mybatis.xml

xml 复制代码 
<?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>

    <settings>
        <setting name="mapUnderscoreToCamelCase" value="true"/>
    </settings>
    <plugins>
        <plugin interceptor="com.github.pagehelper.PageInterceptor"></plugin>
    </plugins>

</configuration>

(4) 在resources下面创建 jdbc.properties (注意：直接项目右击建后移动到resources即可)

ssmbuild-poly/src/main/resources/

jdbc.properties

xm 复制代码 
jdbc.driverClassName=com.mysql.cj.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/ssm?serverTimezone=UTC
jdbc.username=root
jdbc.password=root

(5) 在resources下面创建复制日志文件如下即可

ssmbuild-poly/src/main/resources/

log4j.xml

xml 复制代码 
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">
<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/"
                     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
                     xsi:schemaLocation="http://jakarta.apache.org/log4j/ ">
    <appender name="STDOUT" class="org.apache.log4j.ConsoleAppender">
        <param name="Encoding" value="UTF-8"/>
        <layout class="org.apache.log4j.PatternLayout">
            <param name="ConversionPattern" value="%-5p %d{MM-dd HH:mm:ss,SSS}
%m (%F:%L) \n"/>
        </layout>
    </appender>
    <logger name="java.sql">
        <level value="debug"/>
    </logger>
    <logger name="org.apache.ibatis">
        <level value="info"/>
    </logger>
    <root>
        <level value="debug"/>
        <appender-ref ref="STDOUT"/>
    </root>
</log4j:configuration>

3.5、项目测试

①创建组件

  • 实体类Emp
java 复制代码 
package com.guigu.pojo;

import java.io.Serializable;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

@Data
@NoArgsConstructor
@AllArgsConstructor
public class Emp implements Serializable{
	
    private Integer empId;
    private String empName;
    private Integer age;
    private String sex;
    private String email;

}
  • 创建控制层组件EmpController
java 复制代码 
package com.guigu.controller;

import java.util.List;

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 com.guigu.pojo.Emp;
import com.guigu.service.EmpService;

@Controller
public class EmpController {
	
	@Autowired
	private EmpService EmpService;
	
	@RequestMapping("/emp")
	public String getEmpAll(Model model) {
		
		List<Emp> list = EmpService.getEmpAll();
		
		model.addAttribute("list", list);
		
		return "emp_list";
	}

}
  • 创建接口EmpService 以及接口实现 EmpServiceImpl
java 复制代码 
package com.guigu.service;

import java.util.List;

import com.guigu.pojo.Emp;

public interface EmpService {

	List<Emp> getEmpAll();

}
java 复制代码 
package com.guigu.service.impl;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;

import com.guigu.mapper.EmpMapper;
import com.guigu.pojo.Emp;
import com.guigu.service.EmpService;

public class EmpServiceImpl implements EmpService{
	
	@Autowired
	private EmpMapper empMapper;

	@Override
	public List<Emp> getEmpAll() {
		
		List<Emp> list = empMapper.getEmpAll();
		
		return list;
	}

}
  • 创建Mapper接口和映射文件 EmpMapper
java 复制代码 
package com.guigu.mapper;

import java.util.List;

import com.guigu.pojo.Emp;

public interface EmpMapper {

	List<Emp> getEmpAll();

}
xml 复制代码 
<?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.guigu.mapper.EmpMapper">

    <select id="getEmpAll" resultType="emp">
        select * from t_emp
    </select>

</mapper>

①导入静态资源

创建 index.html,emp_list.html

index.html

html 复制代码 
<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.w3.org/1999/xhtml">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
  <!-- <h1>index.html</h1>-->

   <a th:href="@{/emp}">
       查询员工列表
   </a>
</body>
</html>

emp_list.html

html 复制代码 
<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.w3.org/1999/xhtml">
<head>
<meta charset="UTF-8">
<title>员工列表</title>
<link rel="stylesheet" th:href="@{/static/css/index_work.css}"></link>
</head>
<body>
	<table border="1px" width="100%" align="left" cellspacing="0">
		<tr>
			<th colspan="6">员工列表</th>
		</tr>
		<tr>
			<th>员工编号</th>
			<th>员工姓名</th>
			<th>员工年龄</th>
			<th>员工性别</th>
			<th>员工邮箱</th>
			<th>操作</th>
		</tr>
		<tr th:each="emp,status:${list}">
			<td th:text="${status.count}"></td>
			<td th:text="${emp.empName}"></td>
			<td th:text="${emp.age}"></td>
			<td th:text="${emp.sex}"></td>
			<td th:text="${emp.email}"></td>
			<td><a href="">修改</a> <a href="">删除</a></td>
		</tr>
	</table>
</body>
</html>

最终效果显示：http://localhost:8080/emp/page/3

源码

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