驱动程序未在IntelliJ IDEA中收到来自服务器的任何数据包

Question

我试图第一次将我的intelliJ java项目与mysql连接，不幸的是我得到了这个错误：

com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:835)
at com.mysql.cj.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:455)
at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240)
at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:207)
at java.sql/java.sql.DriverManager.getConnection(DriverManager.java:677)
at java.sql/java.sql.DriverManager.getConnection(DriverManager.java:228)
at sundos.ConnectionConfig.getConnect(ConnectionConfig.java:15)
at sundos.Main.main(Main.java:15)
Caused by: com.mysql.cj.exceptions.CJCommunicationsException: 
Communications link failure

我已经添加了mysql-connector。这是一个简单的代码：

public static Connection getConnect (){

    Connection connection = null;

    try {

        Class.forName("com.mysql.cj.jdbc.Driver");
        connection = DriverManager.getConnection("jdbc:mysql://localhost:3306/test" , "root" , "12345");
    } catch (Exception e){
        e.printStackTrace();
    }

    return connection;
}

Answer 1

我的项目有同样的问题。我通过连接url中的server ip更改localhost来解决它

 connection = DriverManager.getConnection("jdbc:mysql://192.168.3.3:3306/test" , "root" , "12345");