Shulou(Shulou.com)06/01 Report--

What this article shares with you is about how to print the big data report. The editor thinks it is very practical, so I share it with you to learn. I hope you can get something after reading this article.

The printer may not be able to bear to print such a large number of reports. You can calculate what it is like to print 1 million rows of records.

Assuming that a page of paper can print 50 lines of records (which is too much), 1 million rows of records means 20, 000 pages. With 20,000 pages of continuous printing, how many printers can achieve this target? Do your users really have such a device? Twenty thousand pages of paper is about 2 meters thick. What printer can put it in? Commercial fast printers only have more than 30 pages a minute, and it takes 7 hours to calculate 20, 000 pages per minute. It is not easy for a mechanical device to work continuously for such a long time.

Of course, if the actual business needs have to be realized, there are two ways of thinking:

First, if you achieve printing, because printing and browsing are different, you can usually go through it from beginning to end, and there is no need to turn the page in the process. In this way, as long as the streaming data is gradually generated into the print page, the problem of memory overflow will not occur.

However, this practice is still troublesome, especially when modern browsers strengthen security controls, plug-ins such as applet are often disabled and should be implemented in flash or PDF mode. Streaming reading can be achieved with flash, but it is not simple, and it will lead to excessive coupling between the plug-in and the background, affecting security; while the PDF method is to generate a document at one time, there is no way to implement this mechanism.

Second, if you use a report tool, you have to see whether it supports the tool itself. some report tools can support the functions of asynchronous paging rendering, report streaming export, and streaming printing, which is more convenient to use directly. like this: the realization of massive lists and grouped reports, millions of reports that have been tested can be exported and printed, and those with a larger amount of data have to be tested by themselves.

The above is how to print the big data report. The editor believes that there are some knowledge points that we may see or use in our daily work. I hope you can learn more from this article. For more details, please follow the industry information channel.

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