login.do 这个是个后台登录的网页地址，输入用户名和密码进入后，网页变成这样了是怎么回事？

login.do 这个是个后台登录的网页地址，输入用户名和密码进入后，网页变成这样了是怎么回事？

nested exception is org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: Unable to open a test connection to the given database. JDBC url = jdbc:mysql://127.0.0.1:3306/bt3_oa?autoReconnect=true&useUnicode=true&characterEncoding=UTF-8&useServerPrepStmts=true&rewriteBatchedStatements=true, username = root. Terminating connection pool (set lazyInit to true if you expect to start your database after your app). Original Exception: ------ 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: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:395) at com.mysql.jdbc.Util.getInstance(Util.java:370) at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:999) at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:973) at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:959) at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:904) at com.mysql.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:2379) at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2300) at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:818) at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:31) 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:395) at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:400) at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:347) at java.sql.DriverManager.getConnection(DriverManager.java:664) at

写不下，只复制了一小半