hadoop WhoClient 源码
haddop WhoClient 代码
文件路径：/hadoop-common-project/hadoop-auth-examples/src/main/java/org/apache/hadoop/security/authentication/examples/WhoClient.java
/**
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License. See accompanying LICENSE file.
*/
package org.apache.hadoop.security.authentication.examples;
import org.apache.hadoop.security.authentication.client.AuthenticatedURL;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.nio.charset.Charset;
/**
* Example that uses <code>AuthenticatedURL</code>.
*/
public class WhoClient {
public static void main(String[] args) {
try {
if (args.length != 1) {
System.err.println("Usage: <URL>");
System.exit(-1);
}
AuthenticatedURL.Token token = new AuthenticatedURL.Token();
URL url = new URL(args[0]);
HttpURLConnection conn = new AuthenticatedURL().openConnection(url, token);
System.out.println();
System.out.println("Token value: " + token);
System.out.println("Status code: " + conn.getResponseCode() + " " + conn.getResponseMessage());
System.out.println();
if (conn.getResponseCode() == HttpURLConnection.HTTP_OK) {
BufferedReader reader = new BufferedReader(
new InputStreamReader(
conn.getInputStream(), Charset.forName("UTF-8")));
String line = reader.readLine();
while (line != null) {
System.out.println(line);
line = reader.readLine();
}
reader.close();
}
System.out.println();
}
catch (Exception ex) {
System.err.println("ERROR: " + ex.getMessage());
System.exit(-1);
}
}
}
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