执行jar文件时出现FileNotFound异常

Question

I'm creating a epubchecker gui using c#

there is a free epubchecker written in java.

its call epubcheck

to run using command line

java -jar epubcheck.jar file.epub

and my c# code is

System.Diagnostics.Process clientProcess = new Process();
clientProcess.StartInfo.FileName = "java";
clientProcess.StartInfo.Arguments = @" -jar " + @"C:\Users\User\Documents\Visual Studio 2015\Projects\epubcheck-4.0.1\epubcheck.jar" + " " + @"C:\Users\User\Desktop\v3.epub";
clientProcess.Start();
clientProcess.WaitForExit();

and the error is

The system cannot find the path specified

but i checked the location of the jar file and epub

i copied the string on my program and pasted the string on file explorer. and the file and folder exist.

so what am i doing wrong?

Answer 1

将java path添加到环境path变量。

Answer 2

由于文件路径中有空格，因此需要将其用引号引起来：

clientProcess.StartInfo.Arguments = @" -jar " + @"""C:\Users\User\Documents\Visual Studio 2015\Projects\epubcheck-4.0.1\epubcheck.jar""" + " " + @"""C:\Users\User\Desktop\v3.epub""";

Answer 3

尝试这个

   clientProcess.StartInfo.Arguments = @" -jar " + @"C:\\Users\\User\\Documents\Visual Studio 2015\\Projects\\epubcheck-4.0.1\\epubcheck.jar" + " " + @"C:\\Users\\User\\Desktop\\v3.epub";