errorNoSuchMethodError: java.util.stream.Stream.toList()Ljava/util/List only from CLI, fine from eclipse

Question

我正在尝试从 java 运行 windows CLI 命令。我在解析结果时遇到问题，但仅当运行将代码作为来自 cli 的运行nable jar，从 eclipse 中运行没问题

private static List<String> runWindowsCommandAsRuntime(String command) {
        
        List<String> out = new ArrayList<String>();
        
        String[] comm = {
                "C:\Windows\System32\cmd.exe",
                "/S",
                "/K",
                "\""+command+"\"",
                "&",
                "exit" //devo uscire o il processo CMD resta appeso e non esce l'output
                };
        
    
        String dbg = "";
        for(String s : comm)
            dbg += s + " ";
        System.out.println("COMMAND: "+dbg);
        
        try {
            Runtime rt = Runtime.getRuntime();
            Process p = rt.exec(comm);
            
            //get the output
            
            out.addAll(
                    new BufferedReader(new InputStreamReader(p.getInputStream()))
                   .lines().toList() //the exception is thrown here
               );
            
            
            int exitVal = p.exitValue();
            System.out.println("Exited with error code " + exitVal);

            p.destroy();
      
        } catch (Exception ex) {
            Utility.logException("Utility(SystemWindows)", ex);
            return null;
        }
        
        return out;
        
    }

// sample call: runWindowsCommandAsRuntime("WMIC OS Get Caption,Version");

当我运行程序通过 eclipse 时它工作正常，当我从 cli (java -jar my_program.jar) 调用它时，它开始然后抛出这个

我检查了 java 版本并且在 eclipse 和 cli java 11

Exception in thread "main" java.lang.reflect.InvocationTargetException
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.base/java.lang.reflect.Method.invoke(Method.java:566)
        at org.eclipse.jdt.internal.jarinjarloader.JarRsrcLoader.main(JarRsrcLoader.java:61)
Caused by: java.lang.NoSuchMethodError: java.util.stream.Stream.toList()Ljava/util/List;

Answer 1

说明：您正在尝试在流上调用 .toList()，而流没有 .toList() 方法（在 Java < 16 中），因此您必须使用 Collector。

简答：如果你想运行你的程序 Java < 16，你可以使用 .collect(Collectors.toList()) 而不是 .toList()，或者你可以在流上使用 .toList() （如你现在正在做）但是运行它至少 Java 16.

你的整个代码应该看起来像这样，如果你想运行它与 Java 大于 16:

private static List<String> runWindowsCommandAsRuntime(String command) {

    List<String> out = new ArrayList<String>();

    String[] comm = {
            "C:\Windows\System32\cmd.exe",
            "/S",
            "/K",
            "\"" + command + "\"",
            "&",
            "exit" //devo uscire o il processo CMD resta appeso e non esce l'output
    };


    String dbg = "";
    for (String s : comm)
        dbg += s + " ";
    System.out.println("COMMAND: " + dbg);

    try {
        Runtime rt = Runtime.getRuntime();
        Process p = rt.exec(comm);

        //get the output

        out.addAll(
                new BufferedReader(new InputStreamReader(p.getInputStream()))
                        .lines().collect(Collectors.toList()) //the exception is thrown here
        );


        int exitVal = p.exitValue();
        System.out.println("Exited with error code " + exitVal);

        p.destroy();

    } catch (Exception ex) {
        return null;
    }

    return out;

}

errorNoSuchMethodError: java.util.stream.Stream.toList()Ljava/util/List only from CLI, fine from eclipse

errorNoSuchMethodError: java.util.stream.Stream.toList()Ljava/util/List only from CLI, fine from eclipse

java

eclipse

windows

command-line-interface

java-stream