SSM框架的搭建

最新推荐文章于 2023-12-09 15:08:53 发布

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最新推荐文章于 2023-12-09 15:08:53 发布

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SSM框架的搭建

前言
搭建步骤
总结

1.前言
在公司写了一年JS，已经快忘了曾经的后端技术了。。所以，从框架开始搭建，一步一步重新拾起java。

2. 搭建步骤
(1)新建 maven项目，ide 新建项目最后项目结构如下：
在这里插入图片描述 (2)给project添加web目录（web-info、web.xml）手动创建或者ide 添加均可
(3)pom.xml 里添加SSM框架的各种 dependency

<dependencies>
        <!--Spring-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>4.3.5.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aop</artifactId>
            <version>4.3.5.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-orm</artifactId>
            <version>4.3.5.RELEASE</version>
        </dependency>
        <!--Spring transaction-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-tx</artifactId>
            <version>4.3.5.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>4.3.5.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-mock</artifactId>
            <version>2.0.8</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>4.3.5.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>4.3.5.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context-support</artifactId>
            <version>4.3.5.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-expression</artifactId>
            <version>4.3.5.RELEASE</version>
        </dependency>
        <!--Spring Web + Spring MVC-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
            <version>4.3.1.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>4.3.1.RELEASE</version>
        </dependency>
        <!--mysql jdbc-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.38</version>
        </dependency>
        <!--c3p0-->
        <dependency>
            <groupId>c3p0</groupId>
            <artifactId>c3p0</artifactId>
            <version>0.9.1.2</version>
        </dependency>
        <!--mybatis-->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.3.0</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>1.2.3</version>
        </dependency>
    </dependencies>

(4)在resources文件夹下添加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"
        xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.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">

    <context:annotation-config />
    <!-- 配置component所在的包，自动加载需要管理的Bean -->
    <context:component-scan base-package="service,dao" />

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

(5)在resources文件夹下添加spring-mybatis.xml (使用的是c3p0连接池)

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       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/tx http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd">

    <bean id="configProperties" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <property name="locations">
            <list>
                <value>classpath:jdbc.properties</value>
            </list>
        </property>
    </bean>

    <!-- 配置数据源 -->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="driverClass" value="${jdbc.driverClassName}"/>
        <property name="jdbcUrl" value="${jdbc.url}"/>
        <property name="user" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>
        <property name="minPoolSize" value="${c3p0.minPoolSize}"/>
        <property name="acquireIncrement" value="${c3p0.acquireIncrement}"/>
        <property name="acquireRetryAttempts" value="${c3p0.acquireRetryAttempts}"/>
        <property name="acquireRetryDelay" value="${c3p0.acquireRetryDelay}"/>
        <property name="autoCommitOnClose" value="${c3p0.autoCommitOnClose}"/>
        <property name="checkoutTimeout" value="${c3p0.checkoutTimeout}"/>
        <property name="idleConnectionTestPeriod" value="${c3p0.idleConnectionTestPeriod}"/>
        <property name="maxIdleTime" value="${c3p0.maxIdleTime}"/>
        <property name="testConnectionOnCheckin" value="${c3p0.testConnectionOnCheckin}"/>
        <property name="maxStatements" value="${c3p0.maxStatements}"/>
        <property name="maxStatementsPerConnection" value="${c3p0.maxStatementsPerConnection}"/>
        <property name="unreturnedConnectionTimeout" value="${c3p0.unreturnedConnectionTimeout}"/>
    </bean>

    <!-- 配置mybatisSqlSessionFactoryBean -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <property name="mapperLocations" value="classpath:mapper/*.xml"/>
    </bean>
    <!-- 配置mybatis mapper接口 -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="dao"/>
        <!--<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>-->
    </bean>

    <!-- 配置事务管理器 -->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>

</beans>

(6) 在web.xml里去添加 spring 和spring mvc 的配置

<?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">
    <welcome-file-list>
        <welcome-file>/index.jsp</welcome-file>
    </welcome-file-list>
    <!-- Spring MVC配置 -->
    <servlet>
        <servlet-name>spring</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <!--Spring-servlet.xml config-->
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:spring-servlet.xml</param-value>
        </init-param>
        <!-- load-on-startup元素标记容器是否在启动的时候就加载这个servlet(实例化并调用其init()方法) -->
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>spring</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

    <!--spring listener config-->
    <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>
</web-app>

(7) spring-mybatis.xml 对应的model 类和 mapper。ps: 网上有用maven 自动生成的，可以自行百度，贴上mapper。只要对应相应的model即可

<?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="dao.StudentMapper">
    <resultMap id="BaseResultMap" type="model.Student">
        <id column="uid" jdbcType="INTEGER" property="uid" />
        <result column="name" jdbcType="VARCHAR" property="name" />
        <result column="age" jdbcType="INTEGER" property="age" />
    </resultMap>
    <sql id="Base_Column_List">
        uid, name, age
    </sql>

    <select id="selectAll" resultMap="BaseResultMap">
        SELECT
        <include refid="Base_Column_List"/>
        from student
    </select>
    <delete id="deleteByUid" parameterType="model.Student">
        delete from student
        where uid = #{uid,jdbcType=INTEGER}
    </delete>
    <insert id="insert" parameterType="model.Student">
        insert into student (uid, name, age)
        values (#{uid,jdbcType=INTEGER}, #{name,jdbcType=VARCHAR}, #{age,jdbcType=INTEGER})
    </insert>

    <update id="updateByUid" parameterType="model.Student">
        update student
        set Name = #{name,jdbcType=VARCHAR},
        Age = #{age,jdbcType=INTEGER},
        where uid = #{uid,jdbcType=INTEGER}
    </update>
</mapper>

对应的dao 里面的interface

package dao;
import model.Student;
import org.springframework.stereotype.Repository;

import java.util.List;

@Repository
public interface StudentMapper {
    int deleteByUid(int uid);

    int insert(Student record);

    List<Student> selectAll();

    int updateByUid(Student record);
}

(8)新建java 目录下 dao、service 和 controller 并且在xml中配置。
注：service 下引用 dao ; controller 引用 service

package controller;

import com.alibaba.fastjson.JSON;
import model.Student;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;
import service.IStudentService;

import java.util.List;

@RestController
@RequestMapping("/student")
public class StudentController {
    @Autowired
    private IStudentService studentService;

    @RequestMapping(value = "/queryAll",method = RequestMethod.GET)
    public String queryAllStudent() {
        List<Student> students = studentService.selectAll();
        String jsonResult = JSON.toJSONString(students);
        return jsonResult;
    }
}

(9)在tomcat 中打包和启动,附上一张最后项目的目录图
在这里插入图片描述 3.总结
搭建基础SSM框架，接下来要多学习springboot 结合springcloud 等。附上项目github地址：https://github.com/Jacob029049/ssm-demo