MyBatis(一)-----ssm的整合 跑起来

时间  2019-11-06
标签 mybatis ssm 整合 起来 栏目 MyBatis 繁體版
原文   原文链接

SpringMVC+Spring+MyBatis 具体的框架整合流程再也不赘述 只贴全部配置文件css

能够参考：https://www.cnblogs.com/hackyo/p/6646051.htmlhtml

非框架整合的实例能够学习：https://blog.csdn.net/u012562943/article/details/50403099java

1、首先使用idea新建一个Maven webapp项目mysql

　　

　　

　　

　　

2、目录结构：git

一、pom文件github

<?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.google</groupId>
  <artifactId>ssm01</artifactId>
  <version>1.0-SNAPSHOT</version>
  <packaging>war</packaging>

  <name>ssm01 Maven Webapp</name>
  <!-- FIXME change it to the project's website -->
  <url>http://www.example.com</url>

  <properties>
    <!-- 设置项目编码编码 -->
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
    <!-- spring版本号 -->
    <spring.version>4.3.5.RELEASE</spring.version>
    <!-- mybatis版本号 -->
    <mybatis.version>3.4.1</mybatis.version>
  </properties>

  <dependencies>

    <!-- java ee -->
    <dependency>
      <groupId>javax</groupId>
      <artifactId>javaee-api</artifactId>
      <version>7.0</version>
    </dependency>

    <!-- 单元测试 -->
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.12</version>
    </dependency>

    <!-- 实现slf4j接口并整合 -->
    <dependency>
      <groupId>ch.qos.logback</groupId>
      <artifactId>logback-classic</artifactId>
      <version>1.2.2</version>
    </dependency>

    <!-- JSON -->
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-databind</artifactId>
      <version>2.8.7</version>
    </dependency>


    <!-- 数据库 -->
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>5.1.41</version>
      <scope>runtime</scope>
    </dependency>

    <!-- 数据库链接池 -->
    <dependency>
      <groupId>com.mchange</groupId>
      <artifactId>c3p0</artifactId>
      <version>0.9.5.2</version>
    </dependency>

    <!-- MyBatis -->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>${mybatis.version}</version>
    </dependency>

    <!-- mybatis/spring整合包 -->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>1.3.1</version>
    </dependency>

    <!-- Spring -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-core</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-beans</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-tx</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-web</artifactId>
      <version>${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>
    <!--mybatis分页-->
    <!-- pagehelpers -->
    <dependency>
      <groupId>com.github.pagehelper</groupId>
      <artifactId>pagehelper</artifactId>
      <version>4.1.6</version>
    </dependency>
    <dependency>
      <groupId>com.github.jsqlparser</groupId>
      <artifactId>jsqlparser</artifactId>
      <version>0.9.6</version>
    </dependency>


    <!--文件 上传-->
    <dependency>
      <groupId>commons-fileupload</groupId>
      <artifactId>commons-fileupload</artifactId>
      <version>1.3.1</version>
    </dependency>

  </dependencies>



  

  <build>
    <finalName>ssm01</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>3.0.0</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>3.7.0</version>
        </plugin>
        <plugin>
          <artifactId>maven-surefire-plugin</artifactId>
          <version>2.20.1</version>
        </plugin>
        <plugin>
          <artifactId>maven-war-plugin</artifactId>
          <version>3.2.0</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>

2applicationContext.xmlweb

<?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:c="http://www.springframework.org/schema/c" xmlns:cache="http://www.springframework.org/schema/cache"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:jdbc="http://www.springframework.org/schema/jdbc" xmlns:jee="http://www.springframework.org/schema/jee"
       xmlns:lang="http://www.springframework.org/schema/lang" xmlns:mvc="http://www.springframework.org/schema/mvc"
       xmlns:p="http://www.springframework.org/schema/p" xmlns:task="http://www.springframework.org/schema/task"
       xmlns:tx="http://www.springframework.org/schema/tx" xmlns:util="http://www.springframework.org/schema/util"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
		http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd
		http://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
		http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc.xsd
		http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee.xsd
		http://www.springframework.org/schema/lang http://www.springframework.org/schema/lang/spring-lang.xsd
		http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd
		http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task.xsd
		http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd
		http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util.xsd">

    <!--********************************************配置Spring***************************************-->
    <!-- 自动扫描 -->
    <context:component-scan base-package="com.test">
        <!-- 扫描时跳过 @Controller 注解的JAVA类（控制器） -->
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>


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

3.spring-mvc.xmlspring

<?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: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
       http://www.springframework.org/schema/context/spring-context.xsd
       http://www.springframework.org/schema/mvc
       http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">

    <!-- 自动扫描该包，使SpringMVC认为包下用了@controller注解的类是控制器 -->
    <context:component-scan base-package="com.test.controller"/>

    <!-- 开启SpringMVC注解模式 -->
    <mvc:annotation-driven/>



    <!-- 定义跳转的文件的先后缀 ，视图模式配置-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
        <property name="prefix" value="/views/"/>
        <property name="suffix" value=".jsp"/>
    </bean>


    <!-- 配置文件上传，若是没有使用文件上传能够不用配置，固然若是不配，那么配置文件中也没必要引入上传组件包 -->
    <bean id="multipartResolver"
          class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
        <!-- 默认编码 -->
        <property name="defaultEncoding" value="utf-8" />
        <!-- 文件大小最大值 -->
        <property name="maxUploadSize" value="10485760000" />
        <!-- 内存中的最大值 -->
        <property name="maxInMemorySize" value="40960" />
    </bean>

    <!-- 静态资源默认servlet配置 -->
    <mvc:default-servlet-handler/>
    <!-- 静态资源的处理 -->
     <mvc:resources mapping="/static/**" location="/static/" />
    <!-- <mvc:resources mapping="/js/**" location="/static/js/" />
     <mvc:resources mapping="/css/**" location="/static/css/" />
     <mvc:resources mapping="/images/**" location="/static/images/" />
    <mvc:resources mapping="/views/**" location="/WEB-INF/views/" />-->



</beans>

四、spring-myBatis,xmlsql

<?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">



    <!-- 扫描service包下全部使用注解的类型 -->
    <context:component-scan base-package="com.test.service"/>

    <!-- 配置数据库相关参数properties的属性：${url} -->
    <context:property-placeholder location="classpath:META-INF/jdbc.properties"/>

    <!-- 数据库链接池 -->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="driverClass" value="${jdbc.driver}"/>
        <property name="jdbcUrl" value="${jdbc.url}"/>
        <property name="user" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>
        <property name="maxPoolSize" value="${c3p0.maxPoolSize}"/>
        <property name="minPoolSize" value="${c3p0.minPoolSize}"/>
        <property name="autoCommitOnClose" value="${c3p0.autoCommitOnClose}"/>
        <property name="checkoutTimeout" value="${c3p0.checkoutTimeout}"/>
        <property name="acquireRetryAttempts" value="${c3p0.acquireRetryAttempts}"/>
    </bean>

    <!-- 配置SqlSessionFactory对象 -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <!-- 注入数据库链接池 -->
        <property name="dataSource" ref="dataSource"/>
        <!-- 扫描model包 使用别名 -->
        <property name="typeAliasesPackage" value="com.test.model"/>
        <!-- 扫描sql配置文件:mapper须要的xml文件 -->
        <property name="mapperLocations" value="classpath:mapper/*.xml"/>

        <property name="configLocation" value="classpath:META-INF/mybatis-config.xml"></property>
        <!-- 分页插件配置 -->
        <property name="plugins">
            <array>
                <bean class="com.github.pagehelper.PageHelper">
                    <property name="properties">
                        <value>
                            dialect=mysql
                        </value>
                    </property>
                </bean>
            </array>
        </property>

    </bean>

    <!-- 配置扫描Dao接口包，动态实现Dao接口，注入到spring容器中 -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <!-- 注入sqlSessionFactory -->
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
        <!-- 给出须要扫描Dao接口包 -->
        <property name="basePackage" value="com.test.dao"/>
    </bean>

    <!-- 配置事务管理器 -->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <!-- 注入数据库链接池 -->
        <property name="dataSource" ref="dataSource"/>
    </bean>

    <!-- 配置基于注解的声明式事务 -->
    <tx:annotation-driven transaction-manager="transactionManager"/>





</beans>

五、jdbc.properts数据库

jdbc.driver=com.mysql.jdbc.Driver
#数据库地址
jdbc.url=jdbc:mysql://127.0.0.1:3306/ts_ms?useUnicode=true&characterEncoding=utf8
#用户名
jdbc.username=root
#密码
jdbc.password=123456
#最大链接数
c3p0.maxPoolSize=30
#最小链接数
c3p0.minPoolSize=10
#关闭链接后不自动commit
c3p0.autoCommitOnClose=false
#获取链接超时时间
c3p0.checkoutTimeout=10000
#当获取链接失败重试次数
c3p0.acquireRetryAttempts=2

六、logback.xml

<?xml version="1.0" encoding="UTF-8"?>
<configuration debug="true">
    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
        <encoder>
            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
        </encoder>
    </appender>
    <root level="debug">
        <appender-ref ref="STDOUT"/>
    </root>
</configuration>

3、具体实现单表user的crud

大体结构

一、controller层（与ssh彻底同样）

package com.test.controller;

import com.demo.pojo.Json;
import com.demo.pojo.PageHelper;
import com.test.model.User;
import com.test.service.IUserService;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import javax.annotation.Resource;
import java.util.List;

@Controller
@RequestMapping(value = "/user")
public class UserController {
    @Resource
    private IUserService userService;

    @RequestMapping(value = "/save")
    @ResponseBody
    public Object saveUser(User user)
    {
        try{
            userService.insertUser(user);
            return new Json(true,"添加成功",null);
        }
        catch (Exception e)
        {
            return new Json(false,"添加失败："+e.getMessage(),null);
        }




    }
    @RequestMapping(value = "/toAdd")
    public String toAdd()
    {
        return "user/add";
    }

    @RequestMapping(value ="/del" )
    public void delUser(String ids)
    {
        userService.deleteUser(ids);
    }

    @RequestMapping(value = "/getOne")
    public User getOneUser(String id)
    {
      return   userService.selectUserById(id);
    }

    @RequestMapping(value = "/update")
    public void updateUser(User user)
    {
        userService.updataUser(user);
    }


    @RequestMapping(value = "/all")
    @ResponseBody
    public List allUser(PageHelper pageHelper)
    {
      return   userService.selectAlluser(pageHelper);
    }

}

二、servicec层（与ssh彻底同样，service接口省略）

package com.test.service.impl;

import com.demo.Utils.CommonUtils;
import com.demo.pojo.PageHelper;
import com.test.dao.IUserDao;
import com.test.model.User;
import com.test.service.IUserService;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;
import java.util.List;
@Service
public class UserServiceImpl implements IUserService {
    @Resource
    private IUserDao userDao;


    public int insertUser(User user) {
        user.setId(CommonUtils.getUUID());
        userDao.insertUser(user);
        return 0;
    }

    public String deleteUser(String ids) {
        userDao.delUser(ids);
        return ids;
    }

    public String updataUser(User user) {
        userDao.updateUser(user);
        return user.getId();
    }


    public User selectUserById(String id) {
        return userDao.selectUserById(id);
    }


    public List selectAlluser(PageHelper pageHelper) {

        return userDao.selectAllUser(pageHelper);
    }
}

3dao层只写接口

package com.test.dao;

import com.demo.pojo.PageHelper;
import com.test.model.User;

import java.util.List;

public interface IUserDao {
    /**
     *添加用户
     * @param user
     * @return
     */
    int insertUser(User user);

    /**
     * 删除用户
     * @param id
     * @return
     */
    void delUser(String id);

    /**
     * 修改用户
     * @param user
     * @return
     */
    String updateUser(User user);

    /**
     * 根据id查用户
     * @return
     */
    User selectUserById(String id);

    /**
     * 查找全部用户
     * @return
     */
    List<User> selectAllUser(PageHelper pageHelper);
}

四、mapper

<?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.test.dao.IUserDao"><!-- 对应dao层接口的名字 -->
    <!-- 自定义返回结果集 -->
    <resultMap id="userMap" type="com.test.model.User">
        <id property="id" column="id" javaType="java.lang.String"></id>
        <result property="username" column="username" javaType="java.lang.String"></result>
        <result property="password" column="password" javaType="java.lang.String"></result>
    </resultMap>
    <!-- 在各类标签中的id属性必须和接口中的方法名相同 ， id属性值必须是惟一的，不可以重复使用。parameterType属性指明查询时使用的参数类型，
    resultType属性指明查询返回的结果集类型-->
    <!-- useGeneratedKeys：（ 仅 对 insert 有 用 ） 这 会 告 诉 MyBatis 使 用 JDBC 的getGeneratedKeys
     方法来取出由数据（好比：像 MySQL 和 SQLServer 这样的数据库管理系统的自动递增字段）内部生成的主键。默认值： false。
     oracle 不支持应该设置成 useGeneratedKeys="false" 否则会报错
-->
    <!--keyProperty： （仅对 insert有用）标记一个属性， MyBatis 会经过 getGeneratedKeys或者经过 insert 语句的 selectKey 子元素设置它的值。默认：不设置。 -->
    <!--#{}中的内容，为占位符，当参数为某个JavaBean时，表示放置该Bean对象的属性值  -->

    <insert  id="insertUser" parameterType="com.test.model.User">
        INSERT INTO  t_user (id,username,password) VALUES (#{id},#{username},#{password})
    </insert>

    <delete id="delUser" parameterType="String" >
        DELETE FROM t_user WHERE id=#{id}
    </delete>

    <update id="updateUser" parameterType="com.test.model.User">
        UPDATE t_user SET username=#{username},password=#{password} WHERE id=#{id}
    </update>

    <select id="selectUserById" parameterType="String" >
        SELECT * FROM t_user WHERE id=#{id}
    </select>

    <select id="selectAllUser" resultMap="userMap">
        SELECT * FROM t_user
    </select>

</mapper>

总结：与ssh相比总体无差异 controlle层、model层（省去关系映射 建表注解）、service层不变，只是dao层只写接口 而后映射到xml文件 写sql语句 完成orm操做

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