问题
I want to open an URL in chrome with a batch file. This works for normal URLs, but it doesn't for URLs with umlauts.
start chrome.exe https://trends.google.de/trends/explore?q=mähroboter
I cannot use "ae" as a replacement for "ä", as it will give me different results on Google Trends.
When I keep it like this, the URL in my browser changes to
https://trends.google.de/trends/explore?q=mA4hroboter
which again gives me the wrong results. It needs to be "ä".
I tried playing around with the file encoding. Currently UTF8 without BOM. I tried UTF8 with BOM, ANSI, converting to and fro. Nothing seemed to work. What can I do to make it work?
回答1:
URLs must be URL encoded with percent-encoded bytes.
That means the German umlaut ä in a URL must be first UTF-8 encoded with the two bytes with the hexadecimal values C3 A4 and next percent-encoded resulting in %C3%A4 in the URL string:
https://trends.google.de/trends/explore?q=m%C3%A4hroboter
In a batch file a percent sign must be escaped with an additional percent sign to get it interpreted by Windows command processor as literal character and not
- as beginning of a batch file argument reference as explained by help of command CALL output on running
call /?in a command prompt window, or - beginning of a loop variable reference as explained by help of command FOR output on running
for /?in a command prompt window, or - beginning / end of an environment variable reference as explained by help of command SET output on running
set /?in a command prompt window.
So in the batch file must be used:
start chrome.exe https://trends.google.de/trends/explore?q=m%%C3%%A4hroboter
来源：https://stackoverflow.com/questions/52026786/open-url-that-contains-umlaut-with-batch