2台笔记本电脑上的mysql通信链接失败

Question

I have made a software, I have made the mysql database on the different laptop, and the software on different laptop, means i have 2 laptops one has software and one has database and both are connected with internet wire. now I am connecting my software with the database which is installed on different laptop but I get a communication failure link. I have given the ip address of the server laptop, but yet i get the error, please tell me how to resolve this issue, the code is here.

    private static void init()throws Exception{

    String url="jdbc:mysql://169.254.96.182:3306/content_management_system";
    String user="root";
    String password="oracle";

    con=DriverManager.getConnection(url, user, password);

    System.out.println("connection successfull");
}//end method

and the errror is

 com.mysql.jdbc.exceptions.jdbc4.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 sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:425)
    at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:989)
    at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:341)
    at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2189)
    at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2222)
    at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2017)
    at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:779)
    at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:47)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)

Answer 1

By default, the port 3306; which you are using to route the connection to your database, will be closed - or at least, blocked from any outside connections.

You'll need to open this port; and potentially add port forwarding to ensure any outside connections are directed properly.

Look up how to open ports and check out this link on port forwarding.

As mentioned in the comments you can also use the command PING 169.254.96.182 to check if a connection can be established!

Also if you do open the port, unless you have strict security measures in place; you should remove your IP from this question as you're basically giving us all access!