springmvc整合mybatis

项目预览

pom文件

<?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>org.example</groupId>
  <artifactId>mybatisplus</artifactId>
  <version>1.0-SNAPSHOT</version>
  <packaging>war</packaging>

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

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source>1.8</maven.compiler.source>
    <maven.compiler.target>1.8</maven.compiler.target>
  </properties>

  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.11</version>
      <scope>test</scope>
    </dependency>

<!--spring相关依赖-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>5.1.5.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-core</artifactId>
      <version>5.1.5.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-beans</artifactId>
      <version>5.1.5.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-web</artifactId>
      <version>5.1.5.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>5.1.5.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-aop</artifactId>
      <version>5.1.5.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-tx</artifactId>
      <version>5.1.5.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>5.1.5.RELEASE</version>
    </dependency>

<!--    mybatisplus相关依赖-->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>1.3.2</version>
    </dependency>
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>3.4.6</version>
    </dependency>
    <dependency>
      <groupId>com.baomidou</groupId>
      <artifactId>mybatis-plus</artifactId>
      <version>3.0.7.1</version>
    </dependency>
    <dependency>
      <groupId>com.baomidou</groupId>
      <artifactId>mybatis-plus-generator</artifactId>
      <version>3.0.7.1</version>
    </dependency>

<!--    apache相关依赖-->
    <dependency>
      <groupId>org.apache.velocity</groupId>
      <artifactId>velocity-engine-core</artifactId>
      <version>2.0</version>
    </dependency>
    <dependency>
      <groupId>org.apache.commons</groupId>
      <artifactId>commons-lang3</artifactId>
      <version>3.7</version>
    </dependency>
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-core</artifactId>
      <version>2.9.8</version>
    </dependency>
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-databind</artifactId>
      <version>2.9.8</version>
    </dependency>
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-annotations</artifactId>
      <version>2.9.8</version>
    </dependency>

<!--    连接池相关依赖-->
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>8.0.11</version>
    </dependency>
    <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>druid</artifactId>
      <version>1.1.10</version>
    </dependency>

<!--    lombok-->
    <dependency>
      <groupId>org.projectlombok</groupId>
      <artifactId>lombok</artifactId>
      <version>1.18.8</version>
      <scope>provided</scope>
    </dependency>

<!--    页面jsp相关依赖-->
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>javax.servlet-api</artifactId>
      <version>3.1.0</version>
      <scope>provided</scope>
    </dependency>

<!--    日志-->
    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-api</artifactId>
      <version>1.7.5</version>
    </dependency>

    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-log4j12</artifactId>
      <version>1.7.12</version>
    </dependency>

    <dependency>
      <groupId>log4j</groupId>
      <artifactId>log4j</artifactId>
      <version>1.2.17</version>
    </dependency>

  </dependencies>

  <build>
    <finalName>mybatisplus</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>3.1.0</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>3.8.0</version>
        </plugin>
        <plugin>
          <artifactId>maven-surefire-plugin</artifactId>
          <version>2.22.1</version>
        </plugin>
        <plugin>
          <artifactId>maven-war-plugin</artifactId>
          <version>3.2.2</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>

配置文件

db.properties

jdbc.driverClass=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf8&serverTimezone=GMT%2B8&useSSL=false
jdbc.username=root
jdbc.password=root
jdbc.filters=stat

jdbc.maxActive=20
jdbc.initialSize=1
jdbc.maxWait=60000
jdbc.minIdle=10
jdbc.maxIdle=15

jdbc.timeBetweenEvictionRunsMillis=60000
jdbc.minEvictableIdleTimeMillis=300000

jdbc.validationQuery=SELECT 'x'
jdbc.testWhileIdle=true
jdbc.testOnBorrow=false
jdbc.testOnReturn=false

jdbc.maxOpenPreparedStatements=20
jdbc.removeAbandoned=true
jdbc.removeAbandonedTimeout=1800
jdbc.logAbandoned=true

　applicationContext.xml

　

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns="http://www.springframework.org/schema/beans"
       xmlns:mybatis-spring="http://mybatis.org/schema/mybatis-spring"
       xmlns:jdbc="http://www.springframework.org/schema/jdbc"
       xmlns:util="http://www.springframework.org/schema/util"
       xsi:schemaLocation="http://www.springframework.org/schema/jdbc
    http://www.springframework.org/schema/jdbc/spring-jdbc-4.3.xsd
        http://mybatis.org/schema/mybatis-spring
        http://mybatis.org/schema/mybatis-spring-1.2.xsd
        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/aop
        http://www.springframework.org/schema/aop/spring-aop.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-4.3.xsd">
    <!-- 扫描业务逻辑组件 -->
    <context:component-scan
            base-package="com.project">
        <!-- 不扫控制器 -->
        <context:exclude-filter type="annotation"
                                expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>

    <!-- 将数据源交给spring管理  -->
    <context:property-placeholder
            location="classpath:db.properties"/>
    <bean class="com.alibaba.druid.pool.DruidDataSource"
          id="dataSource">
        <property name="driverClassName" value="${jdbc.driverClass}"/>
        <property name="url" value="${jdbc.url}"/>
        <property name="username" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>
        <property name="filters" value="${jdbc.filters}"/>
        <property name="maxActive" value="${jdbc.maxActive}"/>
        <property name="initialSize" value="${jdbc.initialSize}"/>
        <property name="maxWait" value="${jdbc.maxWait}"/>
        <property name="minIdle" value="${jdbc.minIdle}"/>
        <property name="validationQuery"
                  value="${jdbc.validationQuery}"/>
        <property name="testWhileIdle" value="${jdbc.testWhileIdle}"/>
        <property name="testOnBorrow" value="${jdbc.testOnBorrow}"/>
        <property name="testOnReturn" value="${jdbc.testOnReturn}"/>
        <property name="maxOpenPreparedStatements"
                  value="${jdbc.maxOpenPreparedStatements}"/>
        <property name="removeAbandoned"
                  value="${jdbc.removeAbandoned}"/>
        <property name="removeAbandonedTimeout"
                  value="${jdbc.removeAbandonedTimeout}"/>
        <property name="logAbandoned" value="${jdbc.logAbandoned}"/>
    </bean>

    <!--事务(提交,回滚)管理 org.springframework.jdbc.datasource.DataSourceTransactionManager -->
    <bean class="org.springframework.jdbc.datasource.DataSourceTransactionManager"
          id="dataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"></property>
    </bean>

    <!-- 基于注解的事务管理 -->
    <tx:annotation-driven transaction-manager="dataSourceTransactionManager"/>

    <!-- 对mybatis的整合 -->
    <!-- <bean class="org.mybatis.spring.SqlSessionFactoryBean" id="sqlSessionFactory">
        这是MyBatis提供的 -->
    <!-- com.baomidou.mybatisplus.extension.spring.MybatisSqlSessionFactoryBean
        mybatis-plus提供的 -->
    <bean id="sqlSessionFactory"
          class="com.baomidou.mybatisplus.extension.spring.MybatisSqlSessionFactoryBean">
        <!-- 指定数据源 -->
        <property name="dataSource" ref="dataSource"></property>
        <!-- 指定mybatis全局配置文件的位置 -->
        <property name="configLocation"
                  value="classpath:mybatis-plus.xml"></property>
        <property name="typeAliasesPackage"
                  value="org.vector.domain"></property>
        <!-- 指定myabtis配置文件的位置 -->
        <!-- <property name="mapperLocations" value="classpath:mapper/*.xml"></property> -->

        <!--注册mybatisPlus的全局策略配置 -->
        <!-- <property name="globalConfiguration" ref="globalConfiguration"></property> -->
    </bean>

    <!-- 配置扫描器 自动将mybatis接口的实现加入到ioc容器中 -->
    <!--org.mybatis.spring.mapper.MapperScannerConfigurer -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <!-- 扫描所有的dao接口的实现,加入到ioc容器中 -->
        <property name="basePackage" value="com.project.mapper"></property>
        <property name="sqlSessionFactoryBeanName"
                  value="sqlSessionFactory"/>
    </bean>
</beans>

springmvc-servlet.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:p="http://www.springframework.org/schema/p"
       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-4.0.xsd
        http://www.springframework.org/schema/mvc
        http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context-4.0.xsd">

    <!-- SpringMVC的配置文件 -->

    <!-- 包含网站跳转逻辑的配置 -->
    <context:component-scan
            base-package="com.project" use-default-filters="false">
        <!-- 指定要扫描的包 -->
        <!-- 只扫描控制器就是只扫描有@Controller注解的类 -->
        <context:include-filter type="annotation"
                                expression="org.springframework.stereotype.Controller"></context:include-filter>
    </context:component-scan>

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

    <!-- 两个标准配置 -->
    <!-- 将MVC不能处理的资源交给Tomcat这样就能实现动态静态资源都能访问成功 -->
    <!-- 在springMVC-servlet.xml中配置<mvc:default-servlet-handler />后，会在Spring
        MVC上下文中定义一个org.springframework.web.servlet.resource.DefaultServletHttpRequestHandler，它会像一个检查员，对进入DispatcherServlet的URL进行筛查，
        如果发现是静态资源的请求，就将该请求转由Web应用服务器默认的Servlet处理，如果不是静态资源的请求，才由DispatcherServlet继续处理。
        一般Web应用服务器默认的Servlet名称是"default"，因此DefaultServletHttpRequestHandler可以找到它。
        如果你所有的Web应用服务器的默认Servlet名称不是"default"，则需要通过default-servlet-name属性显示指定： <mvc:default-servlet-handler
        default-servlet-name="所使用的Web服务器默认使用的Servlet名称"/> -->
    <mvc:default-servlet-handler/>
    <!-- 能支持更高级的功能,配置注解驱动 相当于配置了最新的处理器映射器和最新的处理器适配器 -->
    <mvc:annotation-driven/>
</beans>

web.xml

<?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_3_0.xsd"
         version="3.0">

  <!-- 开启spring  -->
  <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>
  <!--开启springmvc  -->
  <servlet>
    <servlet-name>dispatcherServlet</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath:springmvc-servlet.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>dispatcherServlet</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>
  <!--编码格式  -->
  <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>forceRequestEncoding</param-name>
      <param-value>true</param-value>
    </init-param>
    <init-param>
      <param-name>forceResponseEncoding</param-name>
      <param-value>true</param-value>
    </init-param>
  </filter>
  <filter-mapping>
    <filter-name>CharacterEncodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>
  <!--支持rest风格的请求  -->
  <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>
  <!--支持put和delete请求  -->
  <filter>
    <filter-name>HttpPutFormContentFilter</filter-name>
    <filter-class>org.springframework.web.filter.HttpPutFormContentFilter</filter-class>
  </filter>
  <filter-mapping>
    <filter-name>HttpPutFormContentFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>
  <!--监控druid  -->
  <filter>
    <filter-name>DruidWebStatFilter</filter-name>
    <filter-class>com.alibaba.druid.support.http.WebStatFilter</filter-class>
    <init-param>
      <param-name>exclusions</param-name>
      <param-value>*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*</param-value>
    </init-param>
  </filter>
  <filter-mapping>
    <filter-name>DruidWebStatFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>
  <servlet>
    <servlet-name>DruidStatView</servlet-name>
    <servlet-class>com.alibaba.druid.support.http.StatViewServlet</servlet-class>
  </servlet>
  <servlet-mapping>
    <servlet-name>DruidStatView</servlet-name>
    <url-pattern>/druid/*</url-pattern>
  </servlet-mapping>
</web-app>

mybatis-plus.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>

cityMapper

cityservice

cityserviceimpl