连接数据库报错

报错内容： g5.util.exception.ConnException: Connection to 127.0.0.1:5432 refused. Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connections.actual class: org.postgresql.util.PSQLException, actual message: Connection to 127.0.0.1:5432 refused. Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connections.拒绝连接 (Connection refused)




该怎么处理呢

ping得通吗？

永洪所在服务器上 用其他的数据库工具能连上吗