总结文件配置 – 源码巴士

总体大概目录
主要配置：pom.xml 配置、web.xml配置、applicationContext.xml配置、springmvc.xml配置
日志log4j2.xml、xxMapper.xml配置；
对三层的MVC搭建：entity层、service层、controller层；
对象和SQL映射mapper层；
在这里插入图片描述

第一部分：文件初始化，文件配置

1 对pom.xml依赖下载

<?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>EpidemicBigData</artifactId>
  <version>1.0-SNAPSHOT</version>
  <packaging>war</packaging>

  <name>EpidemicBigData 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>1.7</maven.compiler.source>
    <maven.compiler.target>1.7</maven.compiler.target>
<!--    1、统一控制版本-->
    <spring-version>5.1.6.RELEASE</spring-version>
  </properties>

  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.11</version>
      <scope>test</scope>
    </dependency>
<!--    2、导入spring包-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>${spring-version}</version>
    </dependency>
<!--    3、导入切面通知包-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-aspects</artifactId>
      <version>${spring-version}</version>
    </dependency>
<!--    4、导入orm 和aspects一起的-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-orm</artifactId>
      <version>${spring-version}</version>
    </dependency>
<!--    5、导入mybatis于spring 连接包-->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>2.0.5</version>
    </dependency>
<!--    6、导入mybatis包-->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>3.5.5</version>
    </dependency>
<!--    7、导入数据库连接包-->
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>8.0.20</version>
    </dependency>
<!--    8、导入hikaricip包，数据连接池-->
    <dependency>
      <groupId>com.zaxxer</groupId>
      <artifactId>HikariCP</artifactId>
      <version>3.4.5</version>
    </dependency>
<!--    9、springmvc 包-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>${spring-version}</version>
    </dependency>
<!--    10、构造器，geter 和setter -->
    <dependency>
      <groupId>org.projectlombok</groupId>
      <artifactId>lombok</artifactId>
      <version>1.18.12</version>
    </dependency>
<!--    11、json格式配置-->
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-databind</artifactId>
      <version>2.11.2</version>
    </dependency>
<!--    12、日志配置-->
    <!--log4j日志-->
    <!-- https://mvnrepository.com/artifact/org.apache.logging.log4j/log4j-slf4j-impl -->
    <dependency>
      <groupId>org.apache.logging.log4j</groupId>
      <artifactId>log4j-slf4j-impl</artifactId>
      <version>2.11.2</version>
    </dependency>

    <!-- https://mvnrepository.com/artifact/org.apache.logging.log4j/log4j-web -->
    <dependency>
      <groupId>org.apache.logging.log4j</groupId>
      <artifactId>log4j-web</artifactId>
      <version>2.11.2</version>
    </dependency>

    <!-- https://mvnrepository.com/artifact/org.apache.logging.log4j/log4j-jcl -->
    <dependency>
      <groupId>org.apache.logging.log4j</groupId>
      <artifactId>log4j-jcl</artifactId>
      <version>2.11.2</version>
    </dependency>






  </dependencies>

  <build>
    <finalName>EpidemicBigData</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>

3、对web.xml进行配置

<?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">
  <!-- 将前端配置文件注入  -->
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:META-INF/applicationContext.xml</param-value>
  </context-param>
<!-- 配置核心组件:前端控制器-->
  <servlet>
    <servlet-name>mvc</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <!--    初始化参数 servlet的声明周期  -->
    <init-param>
      <!--      配置springmvc的核心配置文件-->
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath:META-INF/springmvc.xml</param-value>
    </init-param>
    <!--    配置服务器在启动的时候加载 <servlet>   -->
    <load-on-startup>1</load-on-startup>
  </servlet>

  <servlet-mapping>
    <servlet-name>mvc</servlet-name>
    <!--      所有的servlet都生效-->
    <url-pattern>/</url-pattern>
  </servlet-mapping>

  <!--    过滤器配置-->
  <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>
<!--  监听器配置 -->
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>

  <listener>
    <listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>
  </listener>

  <listener>
    <listener-class>org.apache.logging.log4j.web.Log4jServletContextListener</listener-class>
  </listener>
<!--  将log4j2.xml导入 -->
  <context-param>
  <param-name>log4jConfiguration</param-name>
  <!--默认是classpath下的log4j2.xml-->
  <param-value>classpath:log4j2.xml</param-value>
</context-param>
</web-app>

4、对applicationContext.xml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"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
                           http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd
                           http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd
                           http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd">

   <!--   1、 开启包扫描 主要是扫描mapper  service  可以配置将controller排除掉-->
   <context:component-scan base-package="org.lsj">
      <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
      <context:exclude-filter type="annotation" expression="org.springframework.web.bind.annotation.RestController"/>
   </context:component-scan>

   <!--2、写数据源配置-->
   <bean id="dataSource" class="com.zaxxer.hikari.HikariDataSource">
      <property name="driverClassName" value="com.mysql.cj.jdbc.Driver"></property>
      <property name="jdbcUrl" value="jdbc:mysql://localhost:3306/patient?serverTimezone=Asia/Shanghai&amp;useUnicode=true&amp;characterEncoding=utf8"></property>
      <property name="username" value="root"></property>
      <property name="password" value="123456"></property>
      <!--        数据库连接池中最大连接数量-->
      <property name="maximumPoolSize" value="20"></property>
      <!--        配置测试连接是否可用的查询语句-->
      <property name="connectionTestQuery" value="select 1"></property>
   </bean>
   <!--    3、配置 SqlSessionFactory  mybatis-spring-->
   <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
      <!--        (1)、提供数据源-->
      <property name="dataSource" ref="dataSource"></property>
      <!--        (2)、mapper 的位置  相当于mybatis框架的mapper注册-->
      <property name="mapperLocations" value="classpath:org/lsj/**/*.xml"></property>
   </bean>
   <!--    4、mapper接口的扫描器，目的是将mybatis接口的实现类纳入spring容器-->
   <bean id="mapperScanner" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
      <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
      <!--        (2)、要扫描的基础包:在基础包下进行递归扫描，找接口[会把service接口一并扫描]-->
      <property name="basePackage" value="org.lsj"></property>
      <!--        (3)、只扫描带有@mapper 的接口，过滤掉service接口-->
      <property name="annotationClass" value="org.apache.ibatis.annotations.Mapper"></property>
   </bean>
   <!--  5、配置事务管理器  -->
   <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
   <!--        (1)、提供数据源-->
   <property name="dataSource" ref="dataSource"></property>
</bean>

   <!--    6、配置事务增强  :事务切入规则-->
   <tx:advice id="txAdvice" transaction-manager="transactionManager">
      <!--        (1)、配置事务增强属性（规则）-->
      <!--        spring事务传播机制：
                      SUPPORTS：如果当前存在事务，则加入当前事务中，如果当前不存在事务，则以非事务方式执行
                      REQUIRED:如果当前存在事务，则加入当前事务中，如果当前不存在事务，则新建一个事务
      -->
      <tx:attributes>
         <tx:method name="get*" propagation="SUPPORTS"/>
         <tx:method name="find*" propagation="SUPPORTS"/>
         <tx:method name="select*" propagation="SUPPORTS"/>
         <tx:method name="query*" propagation="SUPPORTS"/>
         <tx:method name="*" propagation="REQUIRED"/>
      </tx:attributes>
   </tx:advice>

<!--   7.使用aop配置事务 -->
   <aop:config>
      <!--        (1).配置切入点
      execution:
          第一个*号:指任意修饰符
          org.example.service:指业务层包路径
          第二个*号:指任意包下
          第三个*号:指任意方法名
          括号里的..:指任意参数
      -->
      <aop:pointcut id="txPointcut" expression="execution(* org.lsj.service.*.*(..))"/>
      <!--        (2).织入-->
      <aop:advisor advice-ref="txAdvice" pointcut-ref="txPointcut"></aop:advisor>
   </aop:config>



</beans>

5、对springmvc.xml进行配置

<beans  xmlns="http://www.springframework.org/schema/beans"
        xmlns:context="http://www.springframework.org/schema/context"
        xmlns:mvc="http://www.springframework.org/schema/mvc"
        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/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">
    <!--1.开启包扫描 只扫描controller 把容器注入进来-->
    <context:component-scan base-package="org.lsj">
        <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
        <context:include-filter type="annotation" expression="org.springframework.web.bind.annotation.RestController"/>
    </context:component-scan>

    <!--    2、开启注解驱动-->
    <mvc:annotation-driven></mvc:annotation-driven>

    <!--    3、注意：springmvc会拦截静态资源，配置这个，让静态资源放过-->
    <mvc:default-servlet-handler></mvc:default-servlet-handler>

    <!--    4、配置视图解析器-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <!--        前缀 / 代表webapp目录   -->
        <property name="prefix" value="/"></property>
        <!--        后缀 -->
        <property name="suffix" value=".jsp"></property>
    </bean>
    <!-- 第一个文件已经做了   -->
    <!--    applicationContext.xml.xml-->
    <!--    <import resource="applicationContext.xml"></import>-->

</beans>

第二部分：三层编写

controller控制层

详情代码

package org.lsj.controller;

import com.sun.org.apache.regexp.internal.RE;
import org.lsj.entity.Province;
import org.lsj.service.ProvinceService;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.List;
/**
 * @Author: Laishijin
 * @Email Lai_shijin@163.com
 * @Date: 2021/12/24 17:07
 */
@RestController
@RequestMapping("/province")
public class ProvinceController {
    private ProvinceService provinceService;

    public ProvinceController(ProvinceService provinceService) {
        this.provinceService = provinceService;
    }
    //    获取登记总人数
    @RequestMapping("/getTotal")
    public int getTotalPeople(){
        return provinceService.getTotalPeople();
    }
    //    获取有确诊人数
    @RequestMapping("/getConfirmed")
    public int getConfirmedPeople(){
        return provinceService.getConfirmedPeople();
    }
    //    获取无症状人数
    @RequestMapping("/getAsymptomatic")
    public int getAsymptomaticPeople(){
        return provinceService.getAsymptomaticPeople();
    }
    //    获取有症状人数
    @RequestMapping("/getSymptomatic")
    public int getSymptomaticPeople(){
        return provinceService.getSymptomaticPeople();
    }
    //    获取疑似病例
    @RequestMapping("/getSuspected")
    public int getSuspectedPeople(){
        return provinceService.getSuspectedPeople();
    }
    //    获取治愈病例
    @RequestMapping("/getCure")
    public int getCurePeople(){
        return provinceService.getCurePeople();
    }
    //    获取重症病例
    @RequestMapping("/getSevere")
    public int getSeverePeople(){
        return provinceService.getSeverePeople();
    }
    //    获取死亡病例
    @RequestMapping("/getDeaths")
    public int getDeathsPeople(){
        return provinceService.getDeathsPeople();
    }
    //    获取省份总病例
    @RequestMapping("getAllProvince")
    public List<Province> getAllProvincePeople(){
        return provinceService.getAllProvincePeople();
    }


}

entity层视图
在这里插入图片描述

详情代码

package org.lsj.entity;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;


@AllArgsConstructor
@NoArgsConstructor
@Data
public class Province {
    private String province ;
    private int total;
}

Service层视图

在这里插入图片描述
详情代码

package org.lsj.service.impl;

import org.lsj.entity.Province;
import org.lsj.mapper.ProvinceMapper;
import org.lsj.service.ProvinceService;
import org.springframework.stereotype.Service;

import java.util.List;
@Service
public class ProvinceServiceImpl implements ProvinceService {
    private ProvinceMapper provinceMapper;
//    进行注入
    public ProvinceServiceImpl(ProvinceMapper provinceMapper) {
        this.provinceMapper = provinceMapper;
    }
    //    获取登记总人数
    @Override
    public int getTotalPeople() {
        return provinceMapper.getTotalPeople();
    }
    //    获取有确诊人数
    @Override
    public int getConfirmedPeople() {
        return provinceMapper.getConfirmedPeople();
    }
    //    获取无症状人数
    @Override
    public int getAsymptomaticPeople() {
        return provinceMapper.getAsymptomaticPeople();
    }
    //    获取有症状人数
    @Override
    public int getSymptomaticPeople() {
        return provinceMapper.getSymptomaticPeople();
    }
    //    获取疑似病例
    @Override
    public int getSuspectedPeople() {
        return provinceMapper.getSuspectedPeople();
    }
    //    获取治愈病例
    @Override
    public int getCurePeople() {
        return provinceMapper.getCurePeople();
    }
    //    获取重症病例
    @Override
    public int getSeverePeople() {
        return provinceMapper.getSeverePeople();
    }
    //    获取死亡病例
    @Override
    public int getDeathsPeople() {
        return provinceMapper.getDeathsPeople();
    }
    //    获取省份总病例
    @Override
    public List<Province> getAllProvincePeople() {
        return provinceMapper.getAllProvincePeople();
    }
}

Mapper层

在这里插入图片描述

详情代码

package org.lsj.mapper;

import org.apache.ibatis.annotations.Mapper;
import org.lsj.entity.Province;

import java.util.List;
@Mapper
public interface ProvinceMapper {
//    获取登记总人数
    public int getTotalPeople();
//    获取累计确诊人数
    public int getConfirmedPeople();
//    获取无症状人数
    public int getAsymptomaticPeople();
//    获取有症状人数
    public int getSymptomaticPeople();
//    获取疑似病例
    public int getSuspectedPeople();
//    获取治愈病例
    public int getCurePeople();
//    获取重症病例
    public int getSeverePeople();
//    获取死亡病例
    public int getDeathsPeople();
//    获取省份总病例
    public List<Province> getAllProvincePeople();

}

第三部分 SQL编写

mapper.xml

在这里插入图片描述

代码详情

<?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="org.lsj.mapper.ProvinceMapper">

<!--   获取登记总人数 public int getTotalPeople();-->
    <select id="getTotalPeople" resultType="int">
        select count(1) from  patient;
    </select>
<!-- 获取有确诊人数 public int getConfirmedPeople();    -->
    <select id="getConfirmedPeople" resultType="int">
        select count(1) from patient  where patient_type = 1;
    </select>

<!-- 获取无症状人数 public int getAsymptomaticPeople();-->
    <select id="getAsymptomaticPeople" resultType="int">
        select count(1) from patient  where patient_type = 2;
    </select>

<!--      获取有症状人数 public int getSymptomaticPeople();-->
    <select id="getSymptomaticPeople" resultType="int">
        select count(1) from patient  where patient_state = 1;
    </select>

<!--     获取疑似病例 public int getSuspectedPeople();-->
    <select id="getSuspectedPeople" resultType="int">
        select count(1) from patient  where patient_state = 0;
    </select>
<!--      获取治愈病例  public int getCurePeople();-->
   <select id="getCurePeople" resultType="int">
        select count(1) from patient  where patient_state = 2;
   </select>
<!--     获取重症病例 public int getSeverePeople();-->
    <select id="getSeverePeople" resultType="int">
         select count(1) from patient  where patient_state = 3;
    </select>
<!--   获取死亡病例 public int getDeathsPeople();-->
    <select id="getDeathsPeople" resultType="int">
        select count(1) from patient  where patient_state = 4;
    </select>
<!-- 获取省份总病例 public List<Province> getAllProvincePeople();-->
    <select id="getAllProvincePeople" resultType="org.lsj.entity.Province">
        select province,count(id) total from patient group by province ;
    </select>





</mapper>

原文链接：https://blog.csdn.net/weixin_45952706/article/details/124649298