mysql-数据库连不上求助，请问该从哪几方面改呢

HTTP?ERROR?404

Problem?accessing?/gfhj/Jsp/errorPages/error.jsp.?Reason:

????NOT_FOUND
Caused?by:

org.mybatis.spring.MyBatisSystemException:?nested?exception?is?org.apache.ibatis.exceptions.PersistenceException:?
###?Error?updating?database.??Cause:?org.springframework.jdbc.CannotGetJdbcConnectionException:?Could?not?get?JDBC?Connection;?nested?exception?is?org.apache.commons.dbcp.SQLNestedException:?Cannot?create?PoolableConnectionFactory?(Access?denied?for?user?'root'@'localhost'?(using?password:?YES))
###?Cause:?org.springframework.jdbc.CannotGetJdbcConnectionException:?Could?not?get?JDBC?Connection;?nested?exception?is?org.apache.commons.dbcp.SQLNestedException:?Cannot?create?PoolableConnectionFactory?(Access?denied?for?user?'root'@'localhost'?(using?password:?YES))
at?org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:73)
at?org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:364)
at?com.sun.proxy.$Proxy7.insert(Unknown?Source)
at?org.mybatis.spring.SqlSessionTemplate.insert(SqlSessionTemplate.java:236)
at?org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:46)
at?org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:43)
at?com.sun.proxy.$Proxy13.adduser(Unknown?Source)
at?com.jiujiu.ssl.user.service.Test_UserService.adduser(Test_UserService.java:17)
at?com.jiujiu.ssl.user.web.Test_UserContorller.adduser(Test_UserContorller.java:39)