您可以打开此链接并搜索您需要的https://mvnrepository.com/artifact/mysql/mysql-connector-java版本，尽管我建议使用maven项目。
pom是

<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    <!-- send email -->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-mail</artifactId>
    </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>io.springfox</groupId>
        <artifactId>springfox-swagger2</artifactId>
        <version>2.9.2</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/com.googlecode.json-simple/json-simple -->
    <dependency>
        <groupId>com.googlecode.json-simple</groupId>
        <artifactId>json-simple</artifactId>
        <version>1.1.1</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/com.github.fge/jackson-coreutils -->
    <dependency>
        <groupId>com.github.fge</groupId>
        <artifactId>jackson-coreutils</artifactId>
        <version>1.0</version>
    </dependency>
    <dependency>
        <groupId>org.projectlombok</groupId>
        <artifactId>lombok</artifactId>
        <optional>true</optional>
    </dependency>
    <dependency>
        <groupId>io.springfox</groupId>
        <artifactId>springfox-swagger-ui</artifactId>
        <version>2.9.2</version>
    </dependency>
    <!-- Configuracion del ORM de spring boot para persistencia -->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-jpa</artifactId>
    </dependency>
    <!-- Conector/libreria de MYSQL para java -->
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <scope>runtime</scope>
    </dependency>
    <!-- https://mvnrepository.com/artifact/com.google.code.gson/gson -->
    <dependency>
        <groupId>com.google.code.gson</groupId>
        <artifactId>gson</artifactId>
        <version>2.8.5</version>
    </dependency>
    <dependency>
        <groupId>net.sf.dozer</groupId>
        <artifactId>dozer</artifactId>
        <version>5.5.1</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/log4j/log4j -->
    <dependency>
        <groupId>log4j</groupId>
        <artifactId>log4j</artifactId>
        <version>1.2.17</version>
    </dependency>
    <dependency>
        <groupId>io.jsonwebtoken</groupId>
        <artifactId>jjwt</artifactId>
        <version>0.9.1</version>
    </dependency>
</dependencies>

字符串
如果使用的是Spring，则只需要属性文件中的next

spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver

型
spring.datasource.url=jdbc：mysql：//：@/？reconnect=true spring.datasource.username= spring.datasource.password=

解压缩第一个zip文件，但不解压缩其他zip文件。而是复制该zip文件并将其粘贴到项目文件夹中单独文件夹中。例如，如果您有一个名为JDBC的项目文件夹（在eclipse中打开JDBC文件夹），则创建一个子文件夹lib，然后在本地计算机中打开lib文件夹并将mysql-connector-j zip文件粘贴到其中。现在，eclipse将正确地将其检测为jar文件。现在右键单击jar文件并添加到构建路径。