getinputstream
时间: 2023-12-04 10:30:26 浏览: 85
`getInputStream()` 是一个 Java 中的方法,用于获取输入流。它通常用于从网络连接或文件中读取数据。当使用网络连接时,可以使用此方法从服务器接收数据。在文件中,此方法可用于从文件中读取内容。
以下是一些示例:
从网络连接中获取输入流:
```java
URL url = new URL("http://example.com");
URLConnection conn = url.openConnection();
InputStream inputStream = conn.getInputStream();
```
从文件中获取输入流:
```java
File file = new File("example.txt");
InputStream inputStream = new FileInputStream(file);
```
相关问题
getInputStream
getInputStream() 是 Java 中 InputStream 类的一个方法,用于获取输入流,以从某个数据源(如文件、网络连接等)读取数据。
例如,在读取一个文件时,可以使用 FileInputStream 类创建一个输入流对象,然后通过调用 getInputStream() 方法获取该文件的输入流。这样就可以使用输入流对象从文件中读取数据了。
另外,getInputStream() 方法也可以用于获取网络连接的输入流,可以通过该输入流读取远程服务器发送过来的数据。
HttpURLConnection getInputStream
`HttpURLConnection.getInputStream()` is a method in Java that returns an input stream that reads from this open connection. The input stream contains the server's response to the HTTP request made by the client. You can use this method to read the response body returned by the server.
Here's a simple example of using `HttpURLConnection.getInputStream()`:
```java
URL url = new URL("https://example.com");
HttpURLConnection con = (HttpURLConnection) url.openConnection();
con.setRequestMethod("GET");
InputStream inputStream = con.getInputStream();
BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
String line;
while ((line = reader.readLine()) != null) {
System.out.println(line);
}
reader.close();
con.disconnect();
```
This example sends a GET request to `https://example.com`, gets the input stream from the response, and reads the response body line by line using a `BufferedReader`. Finally, it closes the reader and disconnects the connection.
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