java - 进程构建器不工作

Question

我正在实现调用另一个java程序的ProcessBuilder程序。但是，我找不到类(class)。

该程序仅产生以下输出:

Error: Could not find or load main class HelloWorld

Program complete

public class ProcessBuilderSample {
    public static void main(String args[]) {
        try {
            ProcessBuilder broker = new ProcessBuilder("java.exe", "-cp",
                "F:\\LunaWorkspace\\ProcessBuilderTest\\bin" ,"com\\hello\\HelloWorld");  

            Process runBroker = broker.start();                     

            BufferedReader reader = new BufferedReader(new InputStreamReader(runBroker.getInputStream()));

            BufferedReader reader1 = new BufferedReader(new InputStreamReader(runBroker.getErrorStream()));

        String str=null;

        while((str=reader.readLine())!=null){
            System.out.println(str);
        }

        while((str=reader1.readLine())!=null){
            System.out.println(str);
        }

            runBroker.waitFor();

            System.out.println("Program complete");

        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (InterruptedException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
}

这是我想要执行的java程序。该程序产生 Hello World 作为输出。

package com.hello;

public class HelloWorld {
    public static void main(String arg[]){
        System.out.println("Hello World");
    }
}

现在我正在使用:

ProcessBuilder 代理 = new ProcessBuilder("java.exe", "-cp", "F:\LunaWorkspace\ProcessBuilderTest\bin","com\hello\HelloWorld");

此命令适用于命令提示符，但不适用于 processbuilder。

编辑:

完整类路径:

ProcessBuilderSample.class:

F:\LunaWorkspace\ProcessBuilderExample\bin\com\sample

HelloWorld.class:

F:\LunaWorkspace\ProcessBuilderTest\bin\com\hello Thanks!!

Answer 1

在构建流程构建器时需要修复 HelloWorld 类名:

“com\\hello\\HelloWorld” -> “com.hello.HelloWorld”