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运行报错：com.alibaba.druid.pool.DruidDataSource : create connection error

2020-02-12 01:06:41.591 ERROR 66279 --- [reate-571481216] com.alibaba.druid.pool.DruidDataSource : create connection error, url: jdbc:mysql//localhost:3306/dbSeckill?serverTimezone=UTC, errorCode 0, state null

java.sql.SQLException: connect error, url jdbc:mysql//localhost:3306/dbSeckill?serverTimezone=UTC, driverClass com.mysql.jdbc.Driver

at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1533) ~[druid-1.0.31.jar:1.0.31]

at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2109) ~[druid-1.0.31.jar:1.0.31]

老师你好，这是什么原因呢。

小熊熊写代码

2020-02-12

源自：SpringBoot构建电商基础秒杀项目 2-3

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4 回答

小熊熊写代码提问者
2020-02-13

应该写成 jdbc:mysql://localhost:3306/dbSeckill，我在mysql后面少写了一个冒号。。。

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小熊熊写代码提问者
2020-02-13

server:
  port: 8888
mybatis:
  mapper-locations: classpath:mapping/*.xml

spring:
  datasource:
    driver-class-name: com.mysql.cj.jdbc.Driver
    name: dbSeckill
    url: jdbc:mysql//localhost:3306/dbSeckill?useUnicode=true&characterEncoding=UTF-8&serverTimezone=GMT
    username: 
    password: 

    type: com.alibaba.druid.pool.DruidDataSource

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小熊熊写代码提问者
2020-02-13

<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.2.4.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.xlx</groupId>
    <artifactId>seckill</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>seckill</name>
    <description>Online Seckill Project</description>
    <properties>
        <java.version>1.8</java.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>8.0.19</version>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jdbc</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jdbc</artifactId>
        </dependency>

        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <!--druid 的数据源-->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.0.5</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>1.3.1</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
            <plugin>
                <artifactId>maven-deploy-plugin</artifactId>
                <version>2.8.2</version>
            </plugin>
            <plugin>
                <groupId>org.mybatis.generator</groupId>
                <artifactId>mybatis-generator-maven-plugin</artifactId>
                <version>1.3.2</version>
                <dependencies>
                    <dependency>
                        <groupId>org.mybatis.generator</groupId>
                        <artifactId>mybatis-generator-core</artifactId>
                        <version>1.3.5</version>
                    </dependency>
                    <dependency>
                        <groupId>mysql</groupId>
                        <artifactId>mysql-connector-java</artifactId>
                        <version>5.1.41</version>
                    </dependency>
                </dependencies>
                <executions>
                    <execution>
                        <id>mybatis generator</id>
                        <phase>package</phase>
                        <goals>
                            <goal>generate</goal>
                        </goals>
                    </execution>
                </executions>
                <configuration>
                    <!-- 允许移动生成的文件 -->
                    <verbose>true</verbose>
                    <!-- 允许自动覆盖文件 -->
                    <overwrite>true</overwrite>
                    <configurationFile>
                        src/main/resources/mybatis-generator.xml
                    </configurationFile>
                </configuration>
            </plugin>
        </plugins>
    </build>

</project>

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