SSM框架整合（Spring+SrpingMVC+Mybatis） 简单案例

简介：

　　SSM框架是Spring，SpringMVC 和Mybatis框架的整合，是标准的MVC模式，将整个系统划分为表现层，controller层，service层，dao层四层。

　　Spring实现对业务对象的管理，SpirngMVC负责请求的转发和视图管理，Mybatis作为数据对象的持久化引擎。

简单案例：

一，创建web项目，建好项目结构目录（controller，service，mapper等目录），引入所需的jar包并配置tomcat

这里放上最终的项目结构：

pom.xml(继承于父工程,没有写版本信息)

<?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">
    <parent>
        <artifactId>project_parent</artifactId>
        <groupId>com.com.zy</groupId>
        <version>1.0-SNAPSHOT</version>
        <relativePath>../project_parent/pom.xml</relativePath>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>child_ssmDemo</artifactId>

    <packaging>war</packaging>

    <dependencies>
        <!--mybatis-->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
        </dependency>
        <!--spring-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aspects</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
        </dependency>
        <!--mybatis-spring-->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
        </dependency>

        <!--jsp相关-->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>jsp-api</artifactId>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>servlet-api</artifactId>
        </dependency>
        <dependency>
            <groupId>jstl</groupId>
            <artifactId>jstl</artifactId>
        </dependency>

        <!--mysql-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>
        <!--Druid连接池-->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.1.9</version>
        </dependency>

        <!--json处理工具包-->
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
        </dependency>

        <!--junit-->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
        </dependency>

        <!--log-->
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
        </dependency>

        <!-- Apache工具组件 -->
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-lang3</artifactId>
        </dependency>
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-io</artifactId>
        </dependency>

        <!--PageHelper-->
        <dependency>
            <groupId>com.github.pagehelper</groupId>
            <artifactId>pagehelper</artifactId>
        </dependency>
        <dependency>
            <groupId>com.github.jsqlparser</groupId>
            <artifactId>jsqlparser</artifactId>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <!--tomcat-->
            <plugin>
                <groupId>org.apache.tomcat.maven</groupId>
                <artifactId>tomcat7-maven-plugin</artifactId>
                <version>2.2</version>
                <configuration>
                    <path>/</path>
                    <port>8080</port>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

pom.xml

dbconfig.properties

jdbc.driverClassName=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://127.0.0.1:3306/temp_db?useUnicode=true&characterEncoding=utf8&autoReconnect=true&allowMultiQueries=true
jdbc.username=root
jdbc.password=root

dbconfig.properties

log4j.properties

log4j.rootLogger=DEBUG,A1
log4j.logger.com.taotao = DEBUG
log4j.logger.org.mybatis = DEBUG

log4j.appender.A1=org.apache.log4j.ConsoleAppender
log4j.appender.A1.layout=org.apache.log4j.PatternLayout
log4j.appender.A1.layout.ConversionPattern=%-d{yyyy-MM-dd HH:mm:ss,SSS} [%t] [%c]-[%p] %m%n

log4j.properties

二，准备数据库表及数据

CREATE TABLE `tb_user` (
  `id` BIGINT(20) NOT NULL AUTO_INCREMENT,
  `username` VARCHAR(100) DEFAULT NULL COMMENT ‘用户名‘,
  `password` VARCHAR(100) DEFAULT NULL COMMENT ‘密码‘,
  `name` VARCHAR(100) DEFAULT NULL COMMENT ‘姓名‘,
  `age` INT(10) DEFAULT NULL COMMENT ‘年龄‘,
  `sex` TINYINT(1) DEFAULT NULL COMMENT ‘性别，1男性，2女性‘,
  `birthday` DATE DEFAULT NULL COMMENT ‘出生日期‘,
  `created` DATETIME DEFAULT NULL COMMENT ‘创建时间‘,
  `updated` DATETIME DEFAULT NULL COMMENT ‘更新时间‘,
  PRIMARY KEY (`id`),
  UNIQUE KEY `username` (`username`)
) 

INSERT INTO `tb_user` VALUES (NULL, ‘zhangxueyou‘, ‘123456‘, ‘张学友‘, ‘30‘, ‘1‘, ‘1984-08-08‘, ‘2014-09-19 16:56:04‘, ‘2014-09-21 11:24:59‘);
INSERT INTO `tb_user` VALUES (NULL, ‘liudehua‘, ‘123456‘, ‘刘德华‘, ‘21‘, ‘2‘, ‘1991-01-01‘, ‘2014-09-19 16:56:04‘, ‘2014-09-19 16:56:04‘);
INSERT INTO `tb_user` VALUES (NULL, ‘guofucheng‘, ‘123456‘, ‘郭富城‘, ‘22‘, ‘2‘, ‘1989-01-01‘, ‘2014-09-19 16:56:04‘, ‘2014-09-19 16:56:04‘);
INSERT INTO `tb_user` VALUES (NULL, ‘liming‘, ‘123456‘, ‘黎明‘, ‘20‘, ‘1‘, ‘1988-09-01‘, ‘2014-09-19 16:56:04‘, ‘2014-09-19 16:56:04‘);
INSERT INTO `tb_user` VALUES (NULL, ‘linghuchong‘, ‘123456‘, ‘令狐冲‘, ‘28‘, ‘1‘, ‘1985-01-01‘, ‘2014-09-19 16:56:04‘, ‘2014-09-19 16:56:04‘);
INSERT INTO `tb_user` VALUES (NULL, ‘zhangsanfeng‘, ‘123456‘, ‘张三丰‘, ‘23‘, ‘1‘, ‘1988-08-08‘, ‘2014-09-20 11:41:15‘, ‘2014-09-20 11:41:15‘);
INSERT INTO `tb_user` VALUES (NULL, ‘lixunhua‘, ‘123456‘, ‘李寻欢‘, ‘23‘, ‘1‘, ‘1988-08-08‘, ‘2014-09-20 11:41:15‘, ‘2014-09-20 11:41:15‘);
INSERT INTO `tb_user` VALUES (NULL, ‘sunyanzi‘, ‘123456‘, ‘孙燕姿‘, ‘23‘, ‘1‘, ‘1988-08-08‘, ‘2014-09-20 11:41:15‘, ‘2014-09-20 11:41:15‘);

创建表及插入数据

三，先整合spring和mybatis

3.1 分析：

1. mybatis框架操作数据库 需要 sqlSessionFactory
2. sqlSessionFactory 需要 连接池 datasource
3. sqlSessionFactory的可以交给spring管理
4. mapper接口的实现也可以交给spring去管理
5. 可以在spring配置中关联mybatis的配置文件

3.2 创建User的JavaBean类：

package com.zy.model;

import org.springframework.format.annotation.DateTimeFormat;

import java.util.Date;

public class User {

    private Long id;

    // 用户名
    private String userName;

    // 密码
    private String password;

    // 姓名
    private String name;

    // 年龄
    private Integer age;

    // 性别，1男性，2女性
    private Integer sex;

    // 出生日期
    @DateTimeFormat(pattern = "yyyy-MM-dd")
    private Date birthday;

    // 创建时间
    private Date created;

    // 更新时间
    private Date updated;

    public Long getId() {
        return id;
    }

    public void setId(Long id) {
        this.id = id;
    }

    public String getuserName() {
        return userName;
    }

    public void setuserName(String userName) {
        this.userName = userName;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Integer getAge() {
        return age;
    }

    public void setAge(Integer age) {
        this.age = age;
    }

    public Integer getSex() {
        return sex;
    }

    public void setSex(Integer sex) {
        this.sex = sex;
    }

    public Date getBirthday() {
        return birthday;
    }

    public void setBirthday(Date birthday) {
        this.birthday = birthday;
    }

    public Date getCreated() {
        return created;
    }

    public void setCreated(Date created) {
        this.created = created;
    }

    public Date getUpdated() {
        return updated;
    }

    public void setUpdated(Date updated) {
        this.updated = updated;
    }

    @Override
    public String toString() {
        return "User [id=" + id + ", userName=" + userName + ", password=" + password + ", name=" + name
                + ", age=" + age + ", sex=" + sex + ", birthday=" + birthday + ", created=" + created
                + ", updated=" + updated + "]";
    }

}

User JavaBean

3.2 创建mapper接口，并添加查询所有信息的方法：

public interface UserMapper {
    /**
     * 获取所有User集合
     */
    public List<User> getAllUserList();
}

3.3 在resource/mybatis下创建mybatis配置文件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>
    <!--开启驼峰标识-->
    <settings>
        <setting name="mapUnderscoreToCamelCase" value="true"/>
    </settings>
</configuration>

3.4 在resource/spring下创建spring配置文件applicationContext.xml并进行配置：

<?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.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">

    <!--引入外部数据库配置文件-->
    <context:property-placeholder location="classpath:dbconfig.properties"/>
    <!--配置Druid数据库-->
    <bean id="druidDataSource" class="com.alibaba.druid.pool.DruidDataSource">
        <property name="driverClassName" value="${jdbc.driverClassName}"/>
        <property name="url" value="${jdbc.url}"/>
        <property name="username" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>
    </bean>

    <!--mybatis依赖的 sqlsessionFactory-->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <!--注入数据库连接-->
        <property name="dataSource" ref="druidDataSource"/>
        <!--关联mybatis配置文件-->
        <property name="configLocation" value="classpath:mybatis/mybatis-config.xml"/>
        <!--扫描domain包 代替mybatis起别名-->
        <property name="typeAliasesPackage" value="com.zy.domain"/>
        <!--关联mapper.xml文件-->
        <property name="mapperLocations" value="classpath:mybatis/mapper/**/*Mapper.xml"/>
    </bean>

    <!--扫描mapper接口包 srping使用动态代理创建mapper接口实现类-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.zy.mapper"></property>
    </bean>
</beans>

3.5 在resource/mybatis/mapper下创建UserMapper对应的UserMapper.xml文件：

<?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.zy.mapper.UserMapper">
    <update id="editUserName">
        update tb_user set name=#{name} where id=#{id}
    </update>
</mapper>

3.6 mapper单元测试：

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = "classpath:spring/applicationContext.xml")
public class UserMapperTest {
    @Value("#{userMapper}")
    UserMapper userMapper;

    @Test
    public void editUserName() throws Exception {
        userMapper.editUserName(1, "张三三");
    }

}

四，添加业务层并添加事务

4.1 applicationContext.xml中添加事务管理器配置，并开启事务注解

<?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 http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd">

    <!--引入外部数据库配置文件-->
    <context:property-placeholder location="classpath:dbconfig.properties"/>
    <!--配置Druid数据库-->
    <bean id="druidDataSource" class="com.alibaba.druid.pool.DruidDataSource">
        <property name="driverClassName" value="${jdbc.driverClassName}"/>
        <property name="url" value="${jdbc.url}"/>
        <property name="username" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>
    </bean>

    <!--mybatis依赖的 sqlsessionFactory-->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <!--注入数据库连接-->
        <property name="dataSource" ref="druidDataSource"/>
        <!--关联mybatis配置文件-->
        <property name="configLocation" value="classpath:mybatis/mybatis-config.xml"/>
        <!--扫描domain包 代替mybatis起别名-->
        <property name="typeAliasesPackage" value="com.zy.domain"/>
        <!--关联mapper.xml文件-->
        <property name="mapperLocations" value="classpath:mybatis/mapper/**/*Mapper.xml"/>
    </bean>

    <!--扫描mapper接口包 srping使用动态代理创建mapper接口实现类-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.zy.mapper"></property>
    </bean>

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

    <!--开启事务注解-->
    <tx:annotation-driven transaction-manager="transactionManager"/>

    <!--扫描注解 业务层交给spring管理-->
    <context:component-scan base-package="com.zy"></context:component-scan>
</beans>

4.2 创建业务类UserService添加注解并配置扫描注解 将业务层交给spring管理（已经在上面提前加上了）：

@Service
public class UserService {
    @Value("#{userMapper}")
    private UserMapper userMapper;

    //同时修改两个id的name
    @Transactional
    public void eidtUserNames(long id1, String name1, long id2, String name2) {
        userMapper.editUserName(id1, name1);
        int i = 1 / 0;//制造异常
        userMapper.editUserName(id2, name2);
    }
}

4.3 单元测试：

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = "classpath:spring/applicationContext.xml")
public class UserServiceTest {
    @Value("#{userService}")
    private UserService userService;

    @Test
    public void eidtUserNames() throws Exception {
        userService.eidtUserNames(1, "张影帝", 2, "刘天王");
    }
}

五，在上面的基础上整合SpringMVC

5.1 在web.xml中配置监听器，以便在tomcat启动后直接实例化spring容器：

<?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_3_1.xsd"
         version="3.1">
    <!--指定spring配置文件的位置-->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:spring/applicationContext*.xml</param-value>
    </context-param>

    <!--tomcat启动后实例化spring容器的监听器-->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
</web-app>

5.2 在web.xml中配置DispatcherServlet信息：

<?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_3_1.xsd"
         version="3.1">
    <!--指定spring配置文件的位置-->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:spring/applicationContext*.xml</param-value>
    </context-param>

    <!--tomcat启动后实例化spring容器的监听器-->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

    <!--整合springmvc-->
    <servlet>
        <servlet-name>springmvc</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <!--加载springmvc的配置文件-->
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:spring/applicationContext_springmvc.xml</param-value>
        </init-param>
    </servlet>
    <servlet-mapping>
        <servlet-name>springmvc</servlet-name>
        <!--拦截jsp以外的内容-->
        <url-pattern>/</url-pattern>
    </servlet-mapping>
</web-app>

5.3 添加并配置5.2中整合mvc的配置文件applicationContext_springmvc.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:mvc="http://www.springframework.org/schema/mvc"
       xmlns:context="http://www.springframework.org/schema/context"
       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">

    <!--HandlerMapping和HandlerAdapter-->
    <mvc:annotation-driven/>
    <!--扫描controller包-->
    <context:component-scan base-package="com.zy.controller"/>

    <!--视图解析器-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <!--前缀-->
        <property name="prefix" value="/WEB-INF/views/"/>
        <!--后缀-->
        <property name="suffix" value=".jsp"/>
    </bean>

    <!--对于静态资源不拦截-->
    <mvc:default-servlet-handler/>
</beans>

5.4 创建WEB-INF/views文件夹并创建UserController：

@Controller
@RequestMapping("/user")
public class UserController {
    @Value("#{userService}")
    private UserService userService;

    @RequestMapping("/editUsers")
    public ModelAndView editUserNames() {
        ModelAndView mv = new ModelAndView("success");
        userService.eidtUserNames(1, "张天王", 2, "刘影帝");
        mv.addObject("msg", "success");
        return mv;
    }
}

运行tomcat访问http://localhost:8080/user/editUsers，然后看一下数据库数据是否已经改变即可。

再来把User列表的json数据信息返回到页面：

UserMapper添加方法：

public interface UserMapper {
    //根据id修改名字
    public void editUserName(@Param("id") long id, @Param("name") String name);

    //获取user列表
    public List<User> getUserList();
}

UserMapper.xml添加sql：

<?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.zy.mapper.UserMapper">
    <update id="editUserName">
        update tb_user set name=#{name} where id=#{id}
    </update>
    <select id="getUserList" resultType="User">
        select * from tb_user
    </select>
</mapper>

UserService添加获取list方法：

@Service
public class UserService {
    @Value("#{userMapper}")
    private UserMapper userMapper;

    //同时修改两个id的name
    @Transactional
    public void eidtUserNames(long id1, String name1, long id2, String name2) {
        userMapper.editUserName(id1, name1);
        //int i = 1 / 0;
        userMapper.editUserName(id2, name2);
    }
    //获取userlist数据
    public List<User> getUserList() {
        return userMapper.getUserList();
    }
}

UserController添加对应的controller方法：

@Controller
@RequestMapping("/user")
public class UserController {
    @Value("#{userService}")
    private UserService userService;

    @RequestMapping("/editUsers")
    public ModelAndView editUserNames() {
        ModelAndView mv = new ModelAndView("success");
        userService.eidtUserNames(1, "张天王", 2, "刘影帝");
        mv.addObject("msg", "success");
        return mv;
    }

    @RequestMapping("/userList")
    @ResponseBody
    public ModelAndView getUserList() {
        ModelAndView mv = new ModelAndView("user_list");
        mv.addObject("userList", userService.getUserList().toString());
        return mv;
    }
}

运行tomcat访问http://localhost:8080/user/userList：

以上。

原文地址：https://www.cnblogs.com/Alex-zqzy/p/9343535.html

时间： 2024-11-05 20:40:02

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