Question

我正在开发一种语言的开发工具。现在我正在做运行的部分。我的意思是运行代码。因为我有自己的编译器，它是一个jar文件。所以我使用java运行时类来执行jar文件并将我的文件作为参数传递。但我有xml和java文件。如果我把这些文件与我的源文件，程序显示错误。那个xml文件不在eclipse文件夹中。但是xml文件和java文件应该与源文件一起使用。经过搜索。我发现classpath设置是个问题。我该如何解决这个问题。我正在附上我的代码。

 import java.io.BufferedInputStream;
 import java.io.File;

 import org.eclipse.core.commands.AbstractHandler;
 import org.eclipse.core.commands.ExecutionEvent;
 import org.eclipse.core.commands.ExecutionException;
 import org.eclipse.jface.viewers.ISelection;
 import org.eclipse.ui.handlers.HandlerUtil;

public class debug extends AbstractHandler {

@Override
public Object execute(ExecutionEvent event) throws ExecutionException {
    System.out.println("HELLO WORLD");
    String workingDir = System.getProperty("user.dir");
    ISelection selection = HandlerUtil.getCurrentSelection(event);
    System.out.println(selection + ":" + workingDir);

    String jar = "";
    String dir = "/home/durga/runtime-EclipseApplication/myApplication/src";

    // Listing the contents
    String[] files = new File(dir).list();
    String[] arg1;
    String arg = "";// /home/durga/final/myjar.jar";
    for (String file : files) {
        arg += "/home/durga/runtime-EclipseApplication/myApplication/src/"
                + file + " ";
    }
    // arg1 = arg.split(",");
    arg = arg.substring(0, arg.length() - 1);
    System.out.println("java -jar /home/durga/final/myjar.jar" + arg);

    String str = "/home/durga/final/Eventj.jar ";

    Runtime r = Runtime.getRuntime();
    try {

        // for(int i=0;i<arg1.length;i++)
        // {

        // r.exec("cd /home/durga/Desktop");
        Process p = r.exec("java -jar " + str + " " + arg + "");

        // }
        System.out.println("java -jar " + str + "  \t " + arg + "");
        /*
         * Now you are getting error, so I taken ErrorStream and printed the
         * contents..
         */
        BufferedInputStream bf = new BufferedInputStream(p.getErrorStream());
        synchronized (p) {
            p.waitFor();
        }
        int b;
        while ((b = bf.read()) > 0)
            System.out.print((char) b);
    } catch (Exception e) {
        System.err.println(e);
    }

    return null;
}

错误是

java.io.FileNotFoundException: /home/freely/freely/eclipse/channels.xml (No such file or directory)

在eclipse中设置classpath

0 个答案: