org.hibernate.exception.JDBCConnectionException: Cannot open connection

 

org.hibernate.exception.JDBCConnectionException: Cannot open connection
 at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:97)
 at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:66)
 at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:52)
 at org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager.java:449)
 at org.hibernate.jdbc.ConnectionManager.getConnection(ConnectionManager.java:167)
 at org.hibernate.jdbc.BorrowedConnectionProxy.invoke(BorrowedConnectionProxy.java:74)
 at $Proxy0.createStatement(Unknown Source)
 at blazefire.fee.TestConnection.testConnection(TestConnection.java:18)
 at blazefire.fee.ServerCheckServlet.doGet(ServerCheckServlet.java:44)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
 at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
 at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
 at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
 at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
 at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
 at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
 at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)
 at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:602)
 at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
 at java.lang.Thread.run(Thread.java:662)
Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up.
 at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
 at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
 at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
 at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
 at com.mysql.jdbc.Util.handleNewInstance(Util.java:411)
 at com.mysql.jdbc.Util.getInstance(Util.java:386)
 at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1013)
 at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:987)
 at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:982)
 at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:927)
 at com.mysql.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:2238)
 at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2159)
 at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:792)
 at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:47)
 at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
 at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
 at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
 at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
 at com.mysql.jdbc.Util.handleNewInstance(Util.java:411)
 at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:381)
 at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:305)
 at java.sql.DriverManager.getConnection(DriverManager.java:582)
 at java.sql.DriverManager.getConnection(DriverManager.java:154)
 at org.logicalcobwebs.proxool.DefaultConnectionBuilder.buildConnection(DefaultConnectionBuilder.java:39)
 at org.logicalcobwebs.proxool.Prototyper.buildConnection(Prototyper.java:159)
 at org.logicalcobwebs.proxool.ConnectionPool.getConnection(ConnectionPool.java:211)
 at org.logicalcobwebs.proxool.ProxoolDriver.connect(ProxoolDriver.java:89)
 at java.sql.DriverManager.getConnection(DriverManager.java:582)
 at java.sql.DriverManager.getConnection(DriverManager.java:207)
 at org.hibernate.connection.ProxoolConnectionProvider.getConnection(ProxoolConnectionProvider.java:75)
 at org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager.java:446)
 ... 19 more
Caused by: java.sql.SQLException: Access denied for user 'mysqladmin'@'localhost' (using password: YES)
 at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1073)
 at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3597)
 at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3529)
 at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:935)
 at com.mysql.jdbc.MysqlIO.secureAuth411(MysqlIO.java:4101)
 at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1300)
 at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2337)
 at com.mysql.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:2177)
 ... 39 more

 

mysql数据库在Linux上，因添加的用户不能本地登录，只能远程登录，而root用户只能本地登录不能远程登录，所以数据库连接用户名和密码都正确的话，就看下IP，把localhost或者127.0.0.1改成服务器IP就可以了。