database_communication_configurations
{
    db_ip:"127.0.0.1",
    db_port:3306,
    db_username:"wk",
    db_passwd:"123456",
    db_name:"chutian_parkingspace",
    db_conn_pool_size:5
}
#database_communication_configurations
#{
#    db_ip:"127.0.0.1",
#    db_port:3306,
#    db_username:"zx",
 #  db_passwd:"zx123456",
 #   db_name:"chutian_parkingspace",
#    db_conn_pool_size:5
#}