Question

我可以使用以下示例代码成功编译任何java类：

  static String testFileName = "OOJavaBootcampTest";
  System.out.println("Compiling student test source file");

  String compileCommand = "cmd /c javac -d \"" + "C:\\submissions\\SOFT222\\Assessment1\\10403435\\Submission20\\OO Java Bootcamp - Java and NetBeans\\build\\test\\classes"
     + "\" -cp \"" + "C:\\submissions\\SOFT222\\Assessment1\\10403435\\Submission20\\OO Java Bootcamp - Java and NetBeans\\build\\test\\classes\\oojavabootcamp\"" + " "
     + "\" \"" + "C:\\submissions\\SOFT222\\Assessment1\\10403435\\Submission20\\OO Java Bootcamp - Java and NetBeans\\test\\oojavabootcamp" + "/"
     + testFileName + ".java\" >> \"" + ""
     + "C:\\Users\\aookpidi\\Desktop\\compilerOutput.txt" + "\" 2>&1";


        System.out.println("Compile student source command: "
                + compileCommand);
        try {
            Runtime.getRuntime().exec(compileCommand).
                    waitFor(5000, TimeUnit.MILLISECONDS);
        } catch (IOException | InterruptedException ex) {
        }

这可以正常工作，但使用相同的代码编译Junit测试类，但添加了jUnit类路径：

final static String jUnitFileName = "junit-4.11.jar";
...
String compileCommand = "cmd /c javac -d \"" + "C:\\submissions\\SOFT222\\Assessment1\\10403435\\Submission20\\OO Java Bootcamp - Java and NetBeans\\build\\test\\classes"
   + "\" -cp \"" + "C:\\submissions\\SOFT222\\Assessment1\\10403435\\Submission20\\OO Java Bootcamp - Java and NetBeans\\build\\test\\classes\\oojavabootcamp\"" + " "
   + "\"C:\\submissions\\SOFT222\\" + jUnitFileName
   + "\" \"" + "C:\\submissions\\SOFT222\\Assessment1\\10403435\\Submission20\\OO Java Bootcamp - Java and NetBeans\\test\\oojavabootcamp" + "/"
   + testFileName + ".java\" >> \"" + ""
   + "C:\\Users\\aookpidi\\Desktop\\compilerOutput.txt" + "\" 2>&1";

test.java文件似乎无法复制到-d中的指定目录。这是compilerOutput文件中的错误：

 javac: invalid flag: C:\submissions\SOFT222\junit-4.11.jar
 Usage: javac <options> <source files>
 use -help for a list of possible options

Junit肯定在指定的位置。

Answer 1

类路径条目需要用;（在Windows上）

分隔

String compileCommand = "cmd /c javac -d \"" + "C:\\submissions\\SOFT222\\Assessment1\\10403435\\Submission20\\OO Java Bootcamp - Java and NetBeans\\build\\test\\classes"
            + "\" -cp \"" + "C:\\submissions\\SOFT222\\Assessment1\\10403435\\Submission20\\OO Java Bootcamp - Java and NetBeans\\build\\test\\classes\\oojavabootcamp\"" + ";"
            + "\"C:\\submissions\\SOFT222\\" + jUnitFileName
            + "\" \"" + "C:\\submissions\\SOFT222\\Assessment1\\10403435\\Submission20\\OO Java Bootcamp - Java and NetBeans\\test\\oojavabootcamp" + "/"
            + testFileName + ".java\" >> \"" + ""
            + "C:\\Users\\aookpidi\\Desktop\\compilerOutput.txt" + "\" 2>&1"

使用Junit用test.java文件替换test.class文件

1 个答案: