Database Connection port problems

This problem occurs when you use SSH to operate the database. Later, the database connection port is incorrect.

 

Communications link failure due to underlying exception:

** Begin nested exception **

Java. Io. eofexception
Message: can not read response from server. expected to read 4 bytes, read 0 bytes before connection was unexpectedly lost.

Stacktrace:

Java. Io. eofexception: can not read response from server. expected to read 4 bytes, read 0 bytes before connection was unexpectedly lost.
At com. MySQL. JDBC. mysqlio. readfully (mysqlio. Java: 1997)
At com. MySQL. JDBC. mysqlio. reuseandreadpacket (mysqlio. Java: 2411)
At com. MySQL. JDBC. mysqlio. checkerrorpacket (mysqlio. Java: 2916)
At com. MySQL. JDBC. mysqlio. sendcommand (mysqlio. Java: 1631)
At com. MySQL. JDBC. mysqlio. sqlquerydirect (mysqlio. Java: 1723)
At com.mysql.jdbc.connection.exe csql (connection. Java: 3256)
At com.mysql.jdbc.preparedstatement.exe cuteinternal (preparedstatement. Java: 1313)
At com.mysql.jdbc.preparedstatement.exe cutequery (preparedstatement. Java: 1448)
At org.apache.tomcat.dbcp.dbcp.delegatingpreparedstatement.exe cutequery (delegatingpreparedstatement. Java: 93)
At jdbcconnect.dbconnect.exe cuteprequery (dbconnect. Java: 214)
At Inc. chkuser. checklogin (chkuser. Java: 84)
At org. Apache. jsp. orderset_jsp. _ jspservice (orderset_jsp.java: 97)
At org. Apache. Jasper. runtime. httpjspbase. Service (httpjspbase. Java: 70)
At javax. servlet. http. httpservlet. Service (httpservlet. Java: 803)
At org. Apache. Jasper. servlet. jspservletwrapper. Service (jspservletwrapper. Java: 393)
At org. Apache. Jasper. servlet. jspservlet. servicejspfile (jspservlet. Java: 320)
At org. Apache. Jasper. servlet. jspservlet. Service (jspservlet. Java: 266)
At javax. servlet. http. httpservlet. Service (httpservlet. Java: 803)
At org. Apache. Catalina. Core. applicationfilterchain. internaldofilter (applicationfilterchain. Java: 290)
At org. Apache. Catalina. Core. applicationfilterchain. dofilter (applicationfilterchain. Java: 206)
At org. Apache. Catalina. Core. standardwrappervalve. Invoke (standardwrappervalve. Java: 233)
At org. Apache. Catalina. Core. standardcontextvalve. Invoke (standardcontextvalve. Java: 175)
At org. Apache. Catalina. Core. standardhostvalve. Invoke (standardhostvalve. Java: 128)
At org. Apache. Catalina. Valves. errorreportvalve. Invoke (errorreportvalve. Java: 102)
At org. Apache. Catalina. Core. standardenginevalve. Invoke (standardenginevalve. Java: 109)
At org. Apache. Catalina. connector. coyoteadapter. Service (coyoteadapter. Java: 263)
At org. Apache. JK. server. jkcoyotehandler. Invoke (jkcoyotehandler. Java: 190)
At org. Apache. JK. Common. handlerrequest. Invoke (handlerrequest. Java: 283)
At org. Apache. JK. Common. channelsocket. Invoke (channelsocket. Java: 767)
At org. Apache. JK. Common. channelsocket. processconnection (channelsocket. Java: 697)
At org. Apache. JK. Common. channelsocket $ socketconnection. Runit (channelsocket. Java: 889)
At org. Apache. tomcat. util. threads. threadpool $ controlrunnable. Run (threadpool. Java: 690)
At java. Lang. thread. Run (thread. Java: 595)

** End nested exception **

Connection Pool settings
<Resource
Name = "JDBC/song"
Type = "javax. SQL. datasource"
Driverclassname = "com. MySQL. JDBC. Driver"
Password = "haishui"
Maxidle = "20"
Maxwait = "5000"
Username = "MySQL"
Url = "JDBC: mysql: // 210.21.206.200/enshine"
Maxactive = "80"