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SSM简单整合！！！

2022-08-07 19:04:53  阅读：181  来源： 互联网

标签：xml xiaoye 简单 springframework SSM 整合 org import com


1.Mybatis层

  1. 数据库表搭建，在数据库创建一个account表，字段如下：

  2. 创建一个maven项目

  3. 在maven中添加依赖

    <dependency>
    <groupId>org.mybatis</groupId>
    <artifactId>mybatis-spring</artifactId>
    <version>2.0.7</version>
</dependency>
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-jdbc</artifactId>
    <version>5.3.2</version>
</dependency>
<dependency>
    <groupId>org.mybatis</groupId>
    <artifactId>mybatis</artifactId>
    <version>3.5.9</version>
</dependency>
<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>8.0.20</version>
</dependency>
<dependency>
    <groupId>org.projectlombok</groupId>
    <artifactId>lombok</artifactId>
    <version>1.18.16</version>
</dependency>
<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-databind</artifactId>
    <version>2.13.3</version>
</dependency>
<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>fastjson</artifactId>
    <version>2.0.10</version>
</dependency>
<dependency>
    <groupId>javax.servlet</groupId>
    <artifactId>javax.servlet-api</artifactId>
    <version>4.0.1</version>
    <scope>provided</scope>
</dependency>
<dependency>
    <groupId>javax.servlet.jsp</groupId>
    <artifactId>jsp-api</artifactId>
    <version>2.2.1-b03</version>
</dependency>
<dependency>
    <groupId>javax.servlet</groupId>
    <artifactId>jstl</artifactId>
    <version>1.2</version>
</dependency>
<dependency>
    <groupId>taglibs</groupId>
    <artifactId>standard</artifactId>
    <version>1.1.2</version>
</dependency>
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-webmvc</artifactId>
    <version>5.3.9</version>
</dependency>
<dependency>
    <groupId>junit</groupId>
    <artifactId>junit</artifactId>
    <version>4.12</version>
</dependency>
<dependency>
    <groupId>org.aspectj</groupId>
    <artifactId>aspectjweaver</artifactId>
    <version>1.6.8</version>
</dependency>

  4. 在idea连接数据库

  5. 将包结构搭建好，并且创建好对应的配置文件

  6. 配置基本的Spring配置文件以及Mybatis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:aop="http://www.springframework.org/schema/aop"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
                           https://www.springframework.org/schema/beans/spring-beans.xsd
                           http://www.springframework.org/schema/aop
                           https://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd">

</beans>

    mybatis-config.xml

    <?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>

</configuration>

  7. 编写数据库资源文件，在resource包下创建db.properties

    jdbc.driver=com.mysql.cj.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/ssm?useUnicode=true&characterEncoding=utf-8&serverTimezone=Asia/Shanghai
jdbc.username=root
jdbc.password=18227022334a

  8. 创建实体类

    //使用Lombok插件
@Data
@AllArgsConstructor
@NoArgsConstructor
public class Account {
    private int id;
    private String name;
    private double money;
}

  9. 编写接口

    import com.xiaoye.pojo.Account;

import java.util.List;

public interface AccountMapper {
    public List<Account> queryAll();
}

  10. 在resource目录下的dao包下创建并且编写AccountMapper.xml配置文件

    <?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.xiaoye.dao.AccountMapper">
    <select id="queryAll" resultType="account">
        select * from account
    </select>
</mapper>

  11. 在mybatis中定义别名以及注册mapper文件

    <?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>
    <typeAliases>
        <package name="com.xiaoye.pojo"/>
    </typeAliases>
    <mappers>
        <mapper class="com.xiaoye.dao.AccountMapper"/>
    </mappers>
</configuration>

  12. 编写业务层

    package com.xiaoye.service;

import com.xiaoye.pojo.Account;

import java.util.List;

public interface AccountService {
    public List<Account> queryAll();
}

  13. 编写业务层实现类

    package com.xiaoye.service;

import com.xiaoye.dao.AccountMapper;
import com.xiaoye.pojo.Account;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

@Service("accountServiceImpl")
public class AccountServiceImpl implements AccountService{

    @Autowired
    private AccountMapper accountMapper;

    @Override
    public List<Account> queryAll() {
        return accountMapper.queryAll();
    }
}

2.Spring层

  1. 在resource下创建spring-dao.xml配置文件

    <?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:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
                           https://www.springframework.org/schema/beans/spring-beans.xsd
                           http://www.springframework.org/schema/aop
                           https://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd">
    <!--导入数据库配置文件-->
    <context:property-placeholder location="classpath:db.properties"/>

    <!--数据库连接池-->
    <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>

    <bean id="SqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <!--在这里面可以完成mybatis配置文件的一些功能-->
        <!--绑定mybatis配置文件，可以使用mybatis文件里的配置-->
        <property name="configLocation" value="classpath:mybatis.xml"/>
    </bean>


    <!--配置dao接口自动扫描，动态将接口注入到Spring容器中-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <!--注入SqlSessionFactory-->
        <property name="sqlSessionFactoryBeanName" value="SqlSessionFactory"/>
        <!--需要扫描的包-->
        <property name="basePackage" value="com.xiaoye.dao"/>
    </bean>
</beans>

  2. 在resource下创建spring-service.xml配置文件

    <?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:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
                           https://www.springframework.org/schema/beans/spring-beans.xsd
                           http://www.springframework.org/schema/aop
                           https://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd">
    <!--扫描Service下的包-->
    <context:component-scan base-package="com.xiaoye.service"/>



    <!--声明式事务-->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <constructor-arg ref="dataSource" />
    </bean>
</beans>

  3. 在applicationContext.xml引入spring-dao.xml和spring.service.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:aop="http://www.springframework.org/schema/aop"
            xmlns:context="http://www.springframework.org/schema/context"
                xsi:schemaLocation="http://www.springframework.org/schema/beans
                    https://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/aop
https://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd">

<import resource="spring-dao.xml"/>
    <import resource="spring-service.xml"/>
    </beans>

3.SpringMVC层

  1. 鼠标右键项目添加Web框架支持

  2. 配置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">
    <servlet>
        <servlet-name>dispatcherServlet</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <!--加载springmvc.xml配置文件-->
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:applicationContext.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>

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

  3. 在resource目录下编写spring-mvc.xml文件

    <?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:mvc="http://www.springframework.org/schema/mvc"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
                           https://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/aop
                           https://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd">
    <!--扫描Service下的包-->
    <context:component-scan base-package="com.xiaoye.controller"/>

    <!--配置的视图解析器对象-->
    <bean id="internalResourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/jsp/"/>
        <property name="suffix" value=".jsp"/>
    </bean>

    <!--注解驱动开启-->
    <!-- JSON乱码问题配置 -->
    <mvc:annotation-driven>
        <mvc:message-converters register-defaults="true">
            <bean class="org.springframework.http.converter.StringHttpMessageConverter">
                <constructor-arg value="UTF-8"/>
            </bean>
            <bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
                <property name="objectMapper">
                    <bean class="org.springframework.http.converter.json.Jackson2ObjectMapperFactoryBean">
                        <property name="failOnEmptyBeans" value="false"/>
                    </bean>
                </property>
            </bean>
        </mvc:message-converters>
    </mvc:annotation-driven>

    <!--静态资源过滤-->
    <!--    <mvc:resources location="/css" mapping="/css/**"/>-->
    <!--    <mvc:resources location="/images/" mapping="/images/**"/>-->
    <!--    <mvc:resources location="/js/" mapping="/js/**"/>-->
</beans>

  4. 编写Controller

    package com.xiaoye.controller;

import com.xiaoye.pojo.Account;
import com.xiaoye.service.AccountService;
import org.junit.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;

import java.util.List;

@Controller("accountController")
@RequestMapping("account")
public class AccountController {

    @Autowired
    @Qualifier("accountServiceImpl")
    private AccountService accountService;

    @RequestMapping("/query")
    public String queryAccount(Model model){
        List<Account> accounts = accountService.queryAll();
        model.addAttribute("list",accounts);
        return "home";
    }
}

  5. 在applicationContext.xml中加入配置

    <import resource="spring-mvc.xml"/>

  6. 在WEB-INF下创建jsp包，在jsp包下创建home.jsp

    <%@ page import="com.xiaoye.pojo.Account" %>
<%@ page import="java.util.List" %><%--
    Created by IntelliJ IDEA.
    User: 86182
        Date: 2022/8/7
            Time: 15:30
                To change this template use File | Settings | File Templates.
                --%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
    <head>
        <title>主页</title>
    </head>
    <body>
        <%
        List<Account> accounts = (List<Account>) request.getAttribute("list");
        for (Account account : accounts) {
            response.getWriter().write(account.toString());
        }
        %>
    </body>
</html>

  7. 配置tomcat

  8. 启动服务器，测试！！

标签：xml,xiaoye,简单,springframework,SSM,整合,org,import,com
来源： https://www.cnblogs.com/xiaoye-Blog/p/16559633.html

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