使用的是mysql 为什么报oracle错误？

错误代码：

java.sql.SQLException: Io 异常: The Network Adapter could not establish the connection

at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:112)

at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:146)

at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:255)

at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:387)

at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:439)

at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:165)

at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:35)

at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:801)

at java.sql.DriverManager.getConnection(DriverManager.java:664)

at java.sql.DriverManager.getConnection(DriverManager.java:247)

at org.apache.log4j.jdbc.JDBCAppender.getConnection(JDBCAppender.java:212)

at org.apache.log4j.jdbc.JDBCAppender.execute(JDBCAppender.java:175)

at org.apache.log4j.jdbc.JDBCAppender.flushBuffer(JDBCAppender.java:250)

at org.apache.log4j.jdbc.JDBCAppender.append(JDBCAppender.java:146)

at org.apache.log4j.AppenderSkeleton.doAppend(AppenderSkeleton.java:251)

at org.apache.log4j.helpers.AppenderAttachableImpl.appendLoopOnAppenders(AppenderAttachableImpl.java:66)

at org.apache.log4j.Category.callAppenders(Category.java:206)

at org.apache.log4j.Category.forcedLog(Category.java:391)

at org.apache.log4j.Category.log(Category.java:856)

at org.apache.commons.logging.impl.Log4JLogger.info(Log4JLogger.java:199)

at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:273)

at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:112)

at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:5068)

at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5584)

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:147)

at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:899)

at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:875)

at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:652)

at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1259)

at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1998)

at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)

at java.util.concurrent.FutureTask.run(FutureTask.java:266)

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

at java.lang.Thread.run(Thread.java:745)