It is very beneficial to frequently learn from others' blogs. Let me make some small contributions.
When I was working on flash today, I encountered the problem that "Macromedia Flash Player has terminated an operation that may be insecure. After checking for half a day on the internet, I did not answer all the questions. Then I accidentally saw a prompt and came back to try it like this: Release settings-> flash-> Local playback security: select "only access network. When you click the link in flash, the prompt will not appear. (Flash8)
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Why Flash is used: If you can use Java or other main languages to writeProgramTo process the data, through the transfer between data, so that flash can be used as a display-level platform in front of the function, will certainly allow you to develop unprecedented, both outside and inside are top-notch direct network-oriented software.
See: Java and Flash Communication: http://www.blogchinese.com/user1/42795/archives/2006/2006526204823.shtml