在IntelliJ调试/运行中向java程序传递字符串缓冲区

在IntelliJ或Eclipse中，如何实现在命令行上运行以下行的等效功能。。。。 :

       InputStream stdin = null;
        try
        {
        stdin = System.in;
        //Give the file path
        FileInputStream stream = new FileInputStream("SomeTextFile.txt");
        System.setIn(stream);
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

        String line;
        while ((line = br.readLine()) != null) {
            System.out.println(line);
        }
                    br.close(); 
                    stream.close()

        //Reset System instream in finally clause
        }finally{             
            System.setIn(stdin);
        }

java MyJava

我试图在IntelliJ中的运行/调试配置的程序参数字段中提供文件的位置，您可以使用它来读取系统输入：

BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

String line;
while ((line = br.readLine()) != null) {
    System.out.println(line);
}

       InputStream stdin = null;
        try
        {
        stdin = System.in;
        //Give the file path
        FileInputStream stream = new FileInputStream("SomeTextFile.txt");
        System.setIn(stream);
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

        String line;
        while ((line = br.readLine()) != null) {
            System.out.println(line);
        }
                    br.close(); 
                    stream.close()

        //Reset System instream in finally clause
        }finally{             
            System.setIn(stdin);
        }

---

正如@Maba所说，我们不能在eclipse/intellij中使用输入重定向操作符（任何重定向操作符），因为没有shell，但您可以通过stdin模拟从文件读取输入，如下所示

       InputStream stdin = null;
        try
        {
        stdin = System.in;
        //Give the file path
        FileInputStream stream = new FileInputStream("SomeTextFile.txt");
        System.setIn(stream);
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

        String line;
        while ((line = br.readLine()) != null) {
            System.out.println(line);
        }
                    br.close(); 
                    stream.close()

        //Reset System instream in finally clause
        }finally{             
            System.setIn(stdin);
        }

---

你不能直接在Intellij中实现这一点，但我正在开发一个插件，它允许将文件重定向到stdin。有关详细信息，请参见我在此处对类似问题的回答[1]，或者尝试一下该插件[2]

       InputStream stdin = null;
        try
        {
        stdin = System.in;
        //Give the file path
        FileInputStream stream = new FileInputStream("SomeTextFile.txt");
        System.setIn(stream);
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

        String line;
        while ((line = br.readLine()) != null) {
            System.out.println(line);
        }
                    br.close(); 
                    stream.close()

        //Reset System instream in finally clause
        }finally{             
            System.setIn(stdin);
        }

[1]

       InputStream stdin = null;
        try
        {
        stdin = System.in;
        //Give the file path
        FileInputStream stream = new FileInputStream("SomeTextFile.txt");
        System.setIn(stream);
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

        String line;
        while ((line = br.readLine()) != null) {
            System.out.println(line);
        }
                    br.close(); 
                    stream.close()

        //Reset System instream in finally clause
        }finally{             
            System.setIn(stdin);
        }

---

[2]

我认为这与发出命令时使用的shell有关。从IntelliJ/Eclipse运行时，我猜根本没有使用shell。我在MyJava应用程序中使用BufferedInputStream。问题是如何通过IntelliJ或Eclipse将参数的数量传递给这个程序，就像上面所示的通过bash命令行传递参数一样。

       InputStream stdin = null;
        try
        {
        stdin = System.in;
        //Give the file path
        FileInputStream stream = new FileInputStream("SomeTextFile.txt");
        System.setIn(stream);
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

        String line;
        while ((line = br.readLine()) != null) {
            System.out.println(line);
        }
                    br.close(); 
                    stream.close()

        //Reset System instream in finally clause
        }finally{             
            System.setIn(stdin);
        }