pom.xml常見依賴：

<dependencies>
<!--Junit-->
<dependency>
    <groupId>junit</groupId>
    <artifactId>junit</artifactId>
    <version>4.12</version>
</dependency>

<!--數(shù)據(jù)庫驅(qū)動-->
<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>8.0.22</version>
</dependency>

<!-- 數(shù)據(jù)庫連接池 -->
<dependency>
    <groupId>com.mchange</groupId>
    <artifactId>c3p0</artifactId>
    <version>0.9.5.2</version>
</dependency>

<!--Servlet - JSP -->
<dependency>
    <groupId>javax.servlet</groupId>
    <artifactId>servlet-api</artifactId>
    <version>2.5</version>
</dependency>
<dependency>
    <groupId>javax.servlet.jsp</groupId>
    <artifactId>jsp-api</artifactId>
    <version>2.2</version>
</dependency>
<dependency>
    <groupId>javax.servlet</groupId>
    <artifactId>jstl</artifactId>
    <version>1.2</version>
</dependency>

<!--Mybatis-->
<dependency>
    <groupId>org.mybatis</groupId>
    <artifactId>mybatis</artifactId>
    <version>3.5.2</version>
</dependency>
<dependency>
    <groupId>org.mybatis</groupId>
    <artifactId>mybatis-spring</artifactId>
    <version>2.0.2</version>
</dependency>

<!--Spring-->
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-webmvc</artifactId>
    <version>5.1.9.RELEASE</version>
</dependency>
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-jdbc</artifactId>
    <version>5.1.9.RELEASE</version>
</dependency>

<!--thymeleaf   命名空間： xmlns:th="http://www.thymeleaf.org"-->
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>

<!--
subject：用戶，
securitymanger：管理所有用戶，
realm：連接數(shù)據(jù)
-->
<!--shiro整合spring的包-->
<dependency>
    <groupId>org.apache.shiro</groupId>
    <artifactId>shiro-spring</artifactId>
    <version>1.4.1</version>
</dependency>

<!--log4j日志框架-->
<dependency>
    <groupId>log4j</groupId>
    <artifactId>log4j</artifactId>
    <version>1.2.17</version>
</dependency>

<!-- 德魯伊數(shù)據(jù)庫連接池-->
<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>druid</artifactId>
    <version>1.2.2</version>
</dependency>

<!-- mybatis整合springboot的包珍昨，屬于mybatis官方的扛稽，所以要寫版本號-->
<dependency>
    <groupId>org.mybatis.spring.boot</groupId>
    <artifactId>mybatis-spring-boot-starter</artifactId>
    <version>2.1.0</version>
</dependency>

<!-- lombok-->
 <dependency>          
    <groupId>org.projectlombok</groupId>
    <artifactId>lombok</artifactId>
    <version>1.16.0</version>
</dependency>

 <!--thymeleaf和springsecurity整合
（命名空間：xmlns:sec="http://www.thymeleaf.org/thymeleaf-extras-springsecurity4"）-->
<dependency>
    <groupId>org.thymeleaf.extras</groupId>
    <artifactId>thymeleaf-extras-springsecurity4</artifactId>
    <version>3.0.4.RELEASE</version>
</dependency>

<!--thymeleaf和shiro整合
（命名空間：xmlns:shiro="http://www.thymeleaf.org/thymeleaf-extras-shiro"）-->
<dependency>
    <groupId>com.github.theborakompanioni</groupId>
    <artifactId>thymeleaf-extras-shiro</artifactId>
    <version>2.0.0</version>
</dependency>

<!--swagger導入swagger2和ui -->
<dependency>
    <groupId>io.springfox</groupId>
    <artifactId>springfox-swagger2</artifactId>
    <version>2.9.2</version>
</dependency>
<dependency>
    <groupId>io.springfox</groupId>
    <artifactId>springfox-swagger-ui</artifactId>
    <version>2.9.2</version>
</dependency>

<!--郵件任務(wù) -->
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-mail</artifactId>
</dependency>





</dependencies>

數(shù)據(jù)庫連接池配置:

<!-- properties格式-->
driverClassName=com.mysql.cj.jdbc.Driver
url=jdbc:mysql://127.0.0.1:3306/db4?serverTimezone=UTC&characterEncoding=utf-8&useSSL=false
username=root
password=root
#initialSize=5
#maxActive=10
#maxWait=3000
filters=stat
initialSize=2
maxActive=300
maxWait=60000
timeBetweenEvictionRunsMillis=60000
minEvictableIdleTimeMillis=300000
validationQuery=SELECT 1
testWhileIdle=true
testOnBorrow=false
testOnReturn=false
poolPreparedStatements=false
maxPoolPreparedStatementPerConnectionSize=200

<!-- yml格式-->
spring:
  datasource:
    username: root
    password: root
    url: jdbc:mysql://localhost:3306/data?useUnicode=true&characterEncoding=utf-8&serverTimezone=UTC
    driver-class-name: com.mysql.cj.jdbc.Driver
    type: com.alibaba.druid.pool.DruidDataSource

    #Spring Boot 默認是不注入這些屬性值的介陶，需要自己綁定
    #druid 數(shù)據(jù)源專有配置
    initialSize: 5
    minIdle: 5
    maxActive: 20
    maxWait: 60000
    timeBetweenEvictionRunsMillis: 60000
    minEvictableIdleTimeMillis: 300000
    validationQuery: SELECT 1 FROM DUAL
    testWhileIdle: true
    testOnBorrow: false
    testOnReturn: false
    poolPreparedStatements: true

    #配置監(jiān)控統(tǒng)計攔截的filters虱疏，stat:監(jiān)控統(tǒng)計、log4j：日志記錄矢赁、wall：防御sql注入
    #如果允許時報錯  java.lang.ClassNotFoundException: org.apache.log4j.Priority
    #則導入 log4j 依賴即可豌研，Maven 地址：https://mvnrepository.com/artifact/log4j/log4j
    filters: stat,wall,log4j
    maxPoolPreparedStatementPerConnectionSize: 20
    useGlobalDataSourceStat: true
    connectionProperties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=500

mapper.xml配置

<?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.beautifulboy.mapper.UserMapper">

<!--    <select id="queryUserList" resultType="User">-->
<!--        select * from user-->
<!--    </select>-->

    <select id="queryUserById" resultType="User">
        select * from user where id=#{id}
    </select>

    <insert id="addUser" parameterType="User">
        insert into user (id,name,pwd) values (#{id},#{name},#{pwd})
    </insert>

    <update id="updateUser" parameterType="User">
        update user set name=#{name},pwd=#{pwd} where id=#{id}
    </update>


    <delete id="deleteUser" parameterType="User">
        delete from user where id=#{id}
    </delete>



</mapper>