从Java调用的Perl脚本仅将部分字符串作为开关

Question

String myCommand = String.format("perl script/path -id 1304444077 -description %250s -owner %s", comment, owner);
process = Runtime.getRuntime().exec(myCommand);

the script is called but only takes the first string for the description switch and the rest of the description is lost.

When I run it in Unix it works fine and I get the entire description I'm looking for.

Answer 1

That is a strange format string. I see no reason to left-pad all comment strings to 250 characters in a command line, and if comment contains whitespace then the shell will split it into words before passing the result to perl

The answer appears to be to enclose the format specifier in quotes, and to escape all quotes in the comment string so that they don't terminate the parameter

I've also changed the superfluous character width to a precision , which will limit the amount of text inserted if the value of comment happens to be longer than 250 characters

String myCommand = String.format("perl script/path -id 1304444077 -description \"%.250s\" -owner \"%s\"",
        comment.replaceAll("\"", "\\\""),
        owner.replaceAll("\"", "\\\""));

process = Runtime.getRuntime().exec(myCommand);