spring PropertiesToStringConverter 源码
spring PropertiesToStringConverter 代码
文件路径：/spring-core/src/main/java/org/springframework/core/convert/support/PropertiesToStringConverter.java
/*
* Copyright 2002-2014 the original author or authors.
*
* 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
*
* https://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.springframework.core.convert.support;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.util.Properties;
import org.springframework.core.convert.converter.Converter;
/**
* Converts from a Properties to a String by calling {@link Properties#store(java.io.OutputStream, String)}.
* Decodes with the ISO-8859-1 charset before returning the String.
*
* @author Keith Donald
* @since 3.0
*/
final class PropertiesToStringConverter implements Converter<Properties, String> {
@Override
public String convert(Properties source) {
try {
ByteArrayOutputStream os = new ByteArrayOutputStream(256);
source.store(os, null);
return os.toString(StandardCharsets.ISO_8859_1);
}
catch (IOException ex) {
// Should never happen.
throw new IllegalArgumentException("Failed to store [" + source + "] into String", ex);
}
}
}
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