我的数据库连接不了，报错如下。

Question

com.mysql.jdbc.CommunicationsException: Communications link failure due to underlying exception: 

** BEGIN NESTED EXCEPTION ** 

com.mysql.jdbc.CommunicationsException

MESSAGE: Communications link failure due to underlying exception: 

** BEGIN NESTED EXCEPTION ** 

java.io.EOFException

STACKTRACE:

java.io.EOFException

at com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java:1963)

at com.mysql.jdbc.MysqlIO.readPacket(MysqlIO.java:557)

at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1027)

at com.mysql.jdbc.Connection.createNewIO(Connection.java:2743)

at com.mysql.jdbc.Connection.<init>(Connection.java:1553)

at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:266)

at java.sql.DriverManager.getConnection(Unknown Source)

at java.sql.DriverManager.getConnection(Unknown Source)

at util.DBHelp.getConnection(DBHelp.java:25)

at util.DBHelp.main(DBHelp.java:32)

** END NESTED EXCEPTION **

Answer 1

瞧瞧代码可以不