Springboot配置application.yml使用jdbc连接MySQL数据库

没有废话直接开始

在pom.xml文件中加入如下依赖项：

<?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.jmccms</groupId>
    <artifactId>Jmccms</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>Jmccms</name>
    <url>https://repo.spring.io/milestone</url>
    <description>CYJ:ChenYongJia 服务提供者Jmccms</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.5.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <!-- 项目属性配置信息 -->
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
        <mysql-connector>5.1.39</mysql-connector>
        <junit-version>4.12</junit-version>
        <druid>1.0.18</druid>
    </properties>

    <dependencies>

        <!-- 引入web依赖 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>

        <!-- 引入AOP -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-aop</artifactId>
        </dependency>

        <!-- Spring Boot JPA 依赖 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>

        <!-- 引入test测试依赖 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>

        <!-- Junit 单元测试 依赖 -->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
        </dependency>

        <!-- 引入redis数据库依赖 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-redis</artifactId>
        </dependency>

        <!-- 引入jdbc链接依赖 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jdbc</artifactId>
        </dependency>

        <!-- 引入mysql链接依赖 -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>${mysql-connector}</version>
        </dependency>

        <!-- 引入 Lombok 依赖 -->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>

        <!-- 使用httpclient获取天气信息 -->
        <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpclient</artifactId>
            <version>4.5.8</version>
        </dependency>
    
    </dependencies>
        
    <build>
        <plugins>
            <!-- SpringBoot 项目打jar包的Maven插件 -->
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
        <!-- SpringBoot项目打包jar名称 -->
        <finalName>jmccms</finalName>
    </build>

</project>

在resource包下创建application.yml，加入以下内容：

server:
  #项目端口号
  port: 8066
  servlet:
    context-path: /Jmccms # 项目访问路径
  tomcat:# 优化tomcat
    max-connections: 200
    max-http-post-size: 0
    max-threads: 300
    min-spare-threads: 0
    uri-encoding: UTF-8

# 日志记录
logging:
  pattern:
    console: "%d - %msg%n"
  #path: D:\Logback-Test\             #日志输出到指定文件夹下默认名为spring.log
  file: D:\Logback-Test\wordimg.log  #日志输出到指定文件
  #level: debug   #指定级别
  level:         #指定输出某个类的日志
    com.cnooc.wordimg.LoggerTest2: debug

spring:
  datasource:
    driver-class-name: com.mysql.jdbc.Driver
    #数据库url
    url: jdbc:mysql://localhost:3306/jmccms?useUnicode=true&characterEncoding=utf8&allowMultiQueries=true&serverTimezone=GMT%2B8&useSSL=false
    # 数据库访问账户
    username: root
    # 数据库访问密码
    password: root
    dbcp2:                                          # 进行数据库连接池的配置
      min-idle: 5                                  # 数据库连接池的最小维持连接数
      initial-size: 5                               # 初始化提供的连接数
      max-total: 5                                # 最大的连接数
      max-wait-millis: 60000 				# 等待连接获取的最大超时时间
  #集中解决各种编码问题
  banner:
    charset: UTF-8
  http:
    encoding:
      charset: UTF-8
      enabled: true
      force: true
  messages:
    encoding: UTF-8
  #     spring mvc 视图解析器
  mvc:
    view:
      prefix: /
      suffix: .html
  # 时间格式化
  jackson:
    date-format: yyyy-MM-dd HH:mm:ss
    # 时区设置
    time-zone: GMT+8

我的数据库密码是root，数据库名是jmccms