java - Runtime.getRuntime().exec ("path to file") 运行，但程序行为奇怪

Question

我正在为许多程序制作一个基于文本的启动器。我正在使用Runtime.getRuntime().exec("path//to//file.exe")) 方法。

程序会运行，它总是会运行，但有些程序会表现得很奇怪，或者无法找到那里的关键 .dll 文件。其他人在运行时文本困惑等。正如你所看到的，这些都是复杂的游戏，并且使用了许多我不理解的引擎。谢谢!

《死亡空间 3》:屏幕黑屏，但游戏运行。仅显示似乎无法正常工作

MW3:TeknoMW3.exe 无法找到 teknomw3.dll，即使它们位于同一文件夹中(并且正常启动它可以使其运行良好)。

无尽的空间:文本显示很奇怪。 Exit 是 %getuserexit% 或类似于每个应该且通常显示文本的空间的东西。仅出现在主菜单上。

细胞 split Blaclist:目录正确，找不到指定的文件。我会解决这个问题。

生化奇兵 1:直接崩溃(可能又是由于 .dll 问题，但我实际上不知道)

《生化奇兵 2》:从未运行。文件已执行但未运行。

public class Main {

static int launcherNum = 14;

static Launchers launchers[] = new Launchers[launcherNum];

static Launchers assassinsCreed3 = new Launchers("G://Games//ROMS//Assassins Creed III//AC3SP.exe", "Assassians Creed III (AC3)");
static Launchers bioshock = new Launchers("G://Games//ROMS//Bioshock//Builds//Release//Bioshock.exe", "Bioshock");
static Launchers bioshock2 = new Launchers("G://Games//ROMS//Bioshock 2//SP//Builds//Binaries//Bioshock2.exe", "Bioshock 2");
static Launchers bioshock3 = new Launchers("G://Games//ROMS//Bioshock Infinite//Binaries//Win32//BioShockInfinite.exe", "Bioshock Infinite");
static Launchers borderlands2 = new Launchers("G://Games//ROMS//Borderlands 2//Binaries//Win32//Borderlands2.exe", "Borderlands 2");
static Launchers mw3 = new Launchers("G://Games//ROMS//Call of Duty- Modern Warfare 3//TeknoMW3.exe", "Call of Duty: Modern Warefare 3 (MW3)");
static Launchers deadSpace3 = new Launchers("G://Games//ROMS//Dead Space 3//deadspace3.exe", "Dead Space 3");
static Launchers endlessSpace = new Launchers("G://Games//ROMS//Endless Space//EndlessSpace.exe", "Endless Space");
static Launchers prototype2 = new Launchers("G://Games//ROMS//PROTOTYPE 2//Prototype2.exe", "Prototype 2");
static Launchers leagueOfLegends = new Launchers("G://Games//ROMS//lol.launcher.exe", "League of Legends");
static Launchers rct3 = new Launchers("G://Games//ROMS//RCT3//RCT3plus.exe", "Rollercoaster Tycoon 3");
static Launchers splitSecond = new Launchers("G://Games//ROMS//Split  Second//SplitSecond.exe", "Split Second");
static Launchers skyrim = new Launchers("G://Games//ROMS//The Elder Scrolls V Skyrim//TESV.exe", "The Elder Scrolls: Skyrim");
static Launchers tcSplinterCell = new Launchers("G://Games//ROMS//Tom Clancys Splinter Cell  Blacklist//src//SYSTEM//Blacklist_DX11_game.exe", "Tom Clancy's: Splinter Cell Blacklist");

public static void initLauncher() {

    //adds AC3
    launchers[0] = assassinsCreed3;

    //Adds all 3 Bioshocks. God its hard to write "Bioshock"
    launchers[1] = bioshock;
    launchers[2] = bioshock2;
    launchers[3] = bioshock3;

    //Adds Borderlands 2
    launchers[4] = borderlands2;

    //Adds MW3
    launchers[5] = mw3;

    //Adds Dead Space 3
    launchers[6] = deadSpace3;

    //Adds Endless Space
    launchers[7] = endlessSpace;

    //Adds Prototype 2
    launchers[8] = prototype2;

    //Adds League of Legends... yeah, I know.
    launchers[9] = leagueOfLegends;

    //Adds RCT3
    launchers[10] = rct3;

    //Adds Split Second
    launchers[11] = splitSecond;

    //Adds skyrim
    launchers[12] = skyrim;

    //Adds Splinter Cell
    launchers[13] = tcSplinterCell;
}

public static void runLaunchers() {

    boolean done = false;
    String input1;
    Scanner input = new Scanner(System.in);

    while(done == false) {
        System.out.println("Welcome to the Cracked Game Launcher, also know     as CSteam. This is a product of the labors of ASIGTX. Do not redistribute.\n Ever");
        System.out.println("Please select a game from our libraires.");
        System.out.println();
        for (Launchers l: launchers) {  
            if (l.launcherName != null) {
            System.out.println(l.launcherName);
            System.out.println();
            }//end of if loop
        }//end of for loop

        input1 = input.nextLine();

        switch (input1) {

        case "Assassins Creed 3":
        case "AC3":
            launchers[0].launchEXE();
            if (launchers[0].hasLaunched == true) {
                done = true;
            }//end of if
            break;

        case "Bioshock":
            launchers[1].launchEXE();
            if (launchers[1].hasLaunched == true) {
                done = true;
            }//end of if
            break;

        case "Bioshock 2":
            launchers[2].launchEXE();
            if (launchers[2].hasLaunched == true) {
                done = true;
            }//end of if
            break;

        case "Bioshock Infinite":
            launchers[3].launchEXE();
            if (launchers[3].hasLaunched == true) {
                done = true;
            }//end of if
            break;

        case "Borderlands 2":
            launchers[4].launchEXE();
            if (launchers[4].hasLaunched == true) {
                done = true;
            }//end of if
            break;

        case "MW3":
        case "Call of Duty: Modern Warefare 3":
            launchers[5].launchEXE();
            if (launchers[5].hasLaunched == true) {
                done = true;
            }//end of if
            break;

        case "Dead Space 3":
            launchers[6].launchEXE();
            if (launchers[6].hasLaunched == true) {
                done = true;
            }//end of if
            break;

        case "Endless Space":
            launchers[7].launchEXE();
            if (launchers[7].hasLaunched == true) {
                done = true;
            }//end of if
            break;

        case "Prototype 2":
            launchers[8].launchEXE();
            if (launchers[8].hasLaunched == true) {
                done = true;
            }//end of if
            break;

        case "League of Legends":
            launchers[9].launchEXE();
            if (launchers[9].hasLaunched == true) {
                done = true;
            }//end of if
            break;

        case "Rollercoaster Tycoon 3":
            launchers[10].launchEXE();
            if (launchers[10].hasLaunched == true) {
                done = true;
            }//end of if
            break;

        case "Split Second":
            launchers[11].launchEXE();
            if (launchers[11].hasLaunched == true) {
                done = true;
            }//end of if
            break;

        case "The Elder Scrolls: Skyrim":
        case "Skyrim":
            launchers[12].launchEXE();
            if (launchers[12].hasLaunched == true) {
                done = true;
            }//end of if
            break;

        case "Tom Clancy's: Splinter Cell Blacklist":
        case "Splinter Cell Blacklist":
            launchers[13].launchEXE();
            if (launchers[13].hasLaunched == true) {
                done = true;
            }//end of if
            break;

        }//end of switch    
    }//end of while loop

}


public static void main(String[] args) {

    initLauncher();
    runLaunchers();

}//end of main

}//end of class





public class Launchers {

public boolean hasLaunched = false;
public String launcherName;

private String dir;


public Launchers(String dir, String namein) {
    setName(namein);
    this.dir = dir; 
}//end of constructor

public void setName(String s) {
    launcherName = s;
}//end of setname
public String getDir() {
    return dir;
}


public void launchEXE() {

    String runtimeName = launcherName;


    try {
        Runtime.getRuntime().exec( getDir() );
    } catch (IOException e) {
        System.out.println("Dir is invalid");
        e.printStackTrace();
    }

        hasLaunched = true;
        System.out.println(launcherName +" has launched!");

}//end of launchEXE


}

Answer 1

程序很可能对其执行上下文有一个期望。

从您的示例来看，每个程序很可能都是在您运行程序的同一上下文/执行位置中启动的，这意味着它们无法找到所需的库或资源。

不要直接使用 Runtime#exec，而是尝试使用 ProcessBuilder反而。这将允许您更改进程的执行位置。

例如...

String cmd = getDir();
File cmdFile = new File(cmd);
// Maybe check that the cmdFile.exists...;)
File parentFile = cmdFile.getParentFile();

ProcessBuilder pb = new ProcessBuilder(cmd);
pb.directory(parentFile);
pb.redirectError();

Process p = pb.start();

还建议读取进程的InputStream，因为当您不这样做时，某些进程会感到不安；)

InputStream is = p.getInputStream();
// This simple reads the contents from the InputStream and discards it
// You could change it to actually dump the output if wanted ;)
while (is.read() != -1);

int exitValue = p.waitFor();