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如何在 Java 中进行 ICMP 和跟踪路由

发布于 2024-08-28 19:47:26 字数 94 浏览 5 评论 0原文

Java 没有 ICMP 和跟踪路由的原语。如何克服这个问题？基本上，我正在构建应该在 *nix 和 Windows 中运行的代码，并且需要一段可以在这两个平台上运行的代码。

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诗笺 2024-09-04 19:47:26

这是我今天写的用 Java“实现”跟踪路由命令的内容。我只在 Windows 中进行了测试，但它应该也可以在 Linux 中工作，尽管有几个可用于 Linux 的跟踪路由工具，因此很可能需要对这些程序的存在进行一些检查。

public class NetworkDiagnostics{
  private final String os = System.getProperty("os.name").toLowerCase();

  public String traceRoute(InetAddress address){
    String route = "";
    try {
        Process traceRt;
        if(os.contains("win")) traceRt = Runtime.getRuntime().exec("tracert " + address.getHostAddress());
        else traceRt = Runtime.getRuntime().exec("traceroute " + address.getHostAddress());

        // read the output from the command
        route = convertStreamToString(traceRt.getInputStream());

        // read any errors from the attempted command
        String errors = convertStreamToString(traceRt.getErrorStream());
        if(errors != "") LOGGER.error(errors);
    }
    catch (IOException e) {
        LOGGER.error("error while performing trace route command", e);
    }

    return route;
}

Here's what I wrote today to "implement" the trace route command in Java. I've only tested in windows but it should work in Linux as well although there are several traceroute tools available for Linux so most likely there need to be some checks for the existence of those programs.

public class NetworkDiagnostics{
  private final String os = System.getProperty("os.name").toLowerCase();

  public String traceRoute(InetAddress address){
    String route = "";
    try {
        Process traceRt;
        if(os.contains("win")) traceRt = Runtime.getRuntime().exec("tracert " + address.getHostAddress());
        else traceRt = Runtime.getRuntime().exec("traceroute " + address.getHostAddress());

        // read the output from the command
        route = convertStreamToString(traceRt.getInputStream());

        // read any errors from the attempted command
        String errors = convertStreamToString(traceRt.getErrorStream());
        if(errors != "") LOGGER.error(errors);
    }
    catch (IOException e) {
        LOGGER.error("error while performing trace route command", e);
    }

    return route;
}

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