背景
在给Doris写flink-connector扩展的时候看到所参考的社区已实现的spark-connector中大量使用了Properties这个类,之前对它了解不多,现在算是做个笔记。
自己所用的该类的代码:
// 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.doris.flink.util;
import java.io.IOException;
import java.io.StringReader;
import java.io.StringWriter;
import java.util.Properties;
public class IOUtils {
public static String propsToString(Properties props) throws IllegalArgumentException {
StringWriter sw = new StringWriter();
if (props != null) {
try {
props.store(sw, "");
} catch (IOException ex) {
throw new IllegalArgumentException("Cannot parse props to String.", ex);
}
}
return sw.toString();
}
public static Properties propsFromString(String source) throws IllegalArgumentException {
Properties copy = new Properties();
if (source != null) {
try {
copy.load(new StringReader(source));
} catch (IOException ex) {
throw new IllegalArgumentException("Cannot parse props from String.", ex);
}
}
return copy;
}
}
可供参考的文章
我发现以下这篇文章已经写得很好了,我就不加一赘述了,感谢原作者的辛勤写作。
文章链接:http://www.justdojava.com/2019/11/05/java-collection-10/
GitHubID:shiyi23
践行 活在当下 的理念