org.apache.hadoop.hbase.client.RetriesExhaustedWithDetailsException
原因：hbase没创建对应表。
建表语句：
create 'Student','StuInfo','Grades'
建表方法
public static void creatTable(String tableName, String[] familys) throws Exception {
HBaseAdmin admin = new HBaseAdmin(conf);
if (admin.tableExists(tableName)) {
System.out.println("该表已存在");
}else {
HTableDescriptor tableDesc = new HTableDescriptor(TableName.valueOf(tableName));
for (int i = 0; i < familys.length; i++) {
tableDesc.addFamily(new HColumnDescriptor(familys[i]));
}
admin.createTable(tableDesc);
System.out.println("创建表 " + tableName + " 完成.");
}
}