[英]Java HttpConnection/HttpsConnection input/error stream
[英]Strange error in my java code with httpconnection
我寫這個代碼:
import java.net.HttpURLConnection;
import java.net.URL;
public class Main{
private static HttpURLConnection connection;
public static void main(String[] args){
final URL url = new URL (spec: "https://google.com");
connection = (HttpURLConnection) url.openConnection();
connection =url.openConnection();
connection.setRequestMethod("GET");
connection.setConnectTimeout(5000);
connection.setReadTimeout(5000);
int status = connection.getResponseCode();
system.out.println(status);
}
}
並得到這個錯誤:
Main.java:8: error: ')' expected
我使用 OpenJdk:
openjdk version "11.0.6" 2020-01-14
OpenJDK Runtime Environment (build 11.0.6+10-post-Ubuntu-1ubuntu118.04.1)
OpenJDK 64-Bit Server VM (build 11.0.6+10-post-Ubuntu-1ubuntu118.04.1, mixed mode, sharing)
和 UBUNTU 18.04
謝謝你的幫助
這里有幾件事是錯誤的,不是處理異常,而是應該是這樣的:
public class Main {
private static HttpURLConnection connection;
public static void main(String[] args) throws Exception {
final URL url = new URL("https://google.com");
connection = (HttpURLConnection)url.openConnection();
connection.setRequestMethod("GET");
connection.setConnectTimeout(5000);
connection.setReadTimeout(5000);
int status = connection.getResponseCode();
System.out.println(status);
}
}
這段代碼應該可以工作
import java.io.IOException;
import java.net.HttpURLConnection;
import java.net.URL;
public class Main{
private static HttpURLConnection connection;
public static void main(String[] args) throws IOException {
final URL url = new URL("https://google.com");
connection = (HttpURLConnection) url.openConnection();
connection.setRequestMethod("GET");
connection.setConnectTimeout(5000);
connection.setReadTimeout(5000);
int status = connection.getResponseCode();
System.out.println(status);
}
}
我不明白什么是 'spec:' IDE 提示或 smth ? 制度也應該來自資本。
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