如何解决"无法为连接URL创建类'com.mysql.jdbc.Driver'的JDBC驱动程序"

Question

首先我想说我检查了stackoverflow的所有答案,我无法解决这个错误!请帮帮我!我花了很多时间,但没有结果.我正在尝试使用Tomcat8创建连接池.我有一个例外:

值java.sql.SQLException:无法创建类 'com.mysql.jdbc.Driver' 的连接URL的JDBC驱动程序 '的jdbc:mysql的:/本地主机:3306 /自动驻车' 在org.apache.tomcat.dbcp.dbcp2.BasicDataSource.createConnectionFactory (BasicDataSource.java:2160)在org.apache.tomcat.dbcp.dbcp2.BasicDataSource.createDataSource(BasicDataSource.java:2032)在org.apache.tomcat.dbcp.dbcp2.BasicDataSource.getConnection(BasicDataSource.java:1532)在ua.khpi.shapoval.db.DbConnector.init(DbConnector.java:31)在ua.khpi.shapoval.db.DbContextListner.contextInitialized(DbContextListner.java:48)在org.apache.catalina.core.StandardContext.listenerStart( StandardContext.java:4842)在org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5303)在org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:147)在org.apache.catalina .core.ContainerBase $ StartChild.call(ContainerBase.java:1407)atg.apache.catalina.core.ContainerBase $ StartChild.call(ContainerBase.java:1397)at java.util.concurrent.Future Task.run(FutureTask.java:266)在java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)在java.util.concurrent.ThreadPoolExecutor中的$ Worker.run(ThreadPoolExecutor.java:617)在java.lang中.Thread.run(Thread.java:745)产生的原因:java.sql.SQLException中:在org.apache.tomcat.dbcp.dbcp2.BasicDataSource.createConnectionFactory(BasicDataSource.java:2151)没有合适的驱动程序... 13个

DbConnector.class

public class DbConnector {
    private static Logger log = Logger.getLogger(DbConnector.class.getName());
    private static DataSource dataSource;
    private static Connection connection;

    public static void init() throws ServletException, SQLException, NamingException, ClassNotFoundException {

        Context initCtx = new InitialContext();

        Context envCtx = (Context) initCtx.lookup("java:comp/env/");

        DataSource ds = (DataSource) envCtx.lookup("jdbc/autopark");
        System.out.println(ds.getConnection());
    }

    public static Connection getConnection() throws SQLException {

        return dataSource.getConnection();
    }

}

位于META-INF文件夹中的context.xml

    <?xml version="1.0" encoding="UTF-8"?>
<Context crossContext="true" reloadable="true">
    <Resource name="jdbc/autopark" auth="Container" type="javax.sql.DataSource"
        username="root" password="161acid161" driverClassName="com.mysql.jdbc.Driver"
        url="jdbc:mysql:/localhost:3306/autopark" maxActive="15" maxIdle="3" />
    <ResourceLink name="jdbc/autopark" global="jdbc/autopark"

        type="javax.sql.DataSource" />

</Context>

web.xml文件

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns="http://xmlns.jcp.org/xml/ns/javaee"
    xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
    id="WebApp_ID" version="3.1">
    <display-name>Autostation</display-name>
    <welcome-file-list>

        <welcome-file>index.jsp</welcome-file>

    </welcome-file-list>


        <resource-ref>

            <description>Db</description>

            <res-ref-name>jdbc/autopark</res-ref-name>

            <res-type>javax.sql.DataSource</res-type>

            <res-auth>Container</res-auth>

        </resource-ref>


    <listener>
        <listener-class>ua.khpi.shapoval.db.DbContextListner</listener-class>
    </listener>
</web-app>

我的tomcat/lib目录和我的项目结构的内容.

Answer 1

JDBC URL不正确,实际上你有一个丢失的斜杠,所以试试这个:

jdbc:mysql://localhost:3306/autopark

如果检查一下,真正的错误就是__CODE__它无法找到任何支持提供的URL的JDBC驱动程序.