hadoop Utils 源码
haddop Utils 代码
文件路径：/hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/web/oauth2/Utils.java
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.
*/
package org.apache.hadoop.hdfs.web.oauth2;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.conf.Configuration;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
@InterfaceAudience.Private
@InterfaceStability.Evolving
final class Utils {
private Utils() { /* Private constructor */ }
public static String notNull(Configuration conf, String key) {
String value = conf.get(key);
if(value == null) {
throw new IllegalArgumentException("No value for " + key +
" found in conf file.");
}
return value;
}
public static String postBody(String ... kv)
throws UnsupportedEncodingException {
if(kv.length % 2 != 0) {
throw new IllegalArgumentException("Arguments must be key value pairs");
}
StringBuilder sb = new StringBuilder();
int i = 0;
while(i < kv.length) {
if(i > 0) {
sb.append("&");
}
sb.append(URLEncoder.encode(kv[i++], "UTF-8"));
sb.append("=");
sb.append(URLEncoder.encode(kv[i++], "UTF-8"));
}
return sb.toString();
}
}
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