运行 jar 文件使用 Qt (QProcess)

Question

How can i exec jar app from qt (use Windows)? I know about QProcess, and i use that:

     QProcess myProcess;
     myProcess.setWorkingDirectory("D:\Programs\Qt\Units\MyJavaProjects\StackExp\target");
     myProcess.start("StackExp-1.0-SNAPSHOT.jar");
     myProcess.waitForFinished();

i show this message:

D:\Programs\Qt\Units\MyJavaProjects\Qt-Java\JavaQt\mainwindow.cpp:78: предупреждение: C4129: 'P': unrecognized character escape sequence

D:\Programs\Qt\Units\MyJavaProjects\Qt-Java\JavaQt\mainwindow.cpp:78: предупреждение: C4129: 'Q': unrecognized character escape sequence

D:\Programs\Qt\Units\MyJavaProjects\Qt-Java\JavaQt\mainwindow.cpp:78: предупреждение: C4129: 'M': unrecognized character escape sequence

D:\Programs\Qt\Units\MyJavaProjects\Qt-Java\JavaQt\mainwindow.cpp:78: предупреждение: C4129: 'S': unrecognized character escape sequence

And my jar file don't run. How do i exec my jar file from qt? Has qt other lib for my problem? What do you think about it?

Answer 1

When you "run example.jar" you actually run java.exe -jar example.jar

QProcess process;
process.setWorkingDirectory("D:\\Programs\\Qt\\Units\\MyJavaProjects\\StackExp\\target");
process.setProgram("java.exe");
process.setArguments({"-jar","StackExp-1.0-SNAPSHOT.jar"});
process.start();