“顶级值后的无效字符'1'”解组JSON

Question

I am using json to store data on disk between program calls, the program runs fine for some time, but after that it displays error in json decoding, "invalid character '1' after top-level value ".

Can anyone suggest some solution to this problem ?

Answer 1

When you write the data to disk, are you making sure to pass os.O_TRUNC (or otherwise truncate the file) in the open flags? If not, the program will work fine until you write an object smaller than the last. But it's hard to debug code without seeing it.