spring StringToDataSizeConverter 源码
springboot StringToDataSizeConverter 代码
文件路径：/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/convert/StringToDataSizeConverter.java
/*
* Copyright 2012-2019 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.boot.convert;
import java.util.Collections;
import java.util.Set;
import org.springframework.core.convert.TypeDescriptor;
import org.springframework.core.convert.converter.Converter;
import org.springframework.core.convert.converter.GenericConverter;
import org.springframework.util.ObjectUtils;
import org.springframework.util.unit.DataSize;
import org.springframework.util.unit.DataUnit;
/**
* {@link Converter} to convert from a {@link String} to a {@link DataSize}. Supports
* {@link DataSize#parse(CharSequence)}.
*
* @author Stephane Nicoll
* @see DataSizeUnit
*/
final class StringToDataSizeConverter implements GenericConverter {
@Override
public Set<ConvertiblePair> getConvertibleTypes() {
return Collections.singleton(new ConvertiblePair(String.class, DataSize.class));
}
@Override
public Object convert(Object source, TypeDescriptor sourceType, TypeDescriptor targetType) {
if (ObjectUtils.isEmpty(source)) {
return null;
}
return convert(source.toString(), getDataUnit(targetType));
}
private DataUnit getDataUnit(TypeDescriptor targetType) {
DataSizeUnit annotation = targetType.getAnnotation(DataSizeUnit.class);
return (annotation != null) ? annotation.value() : null;
}
private DataSize convert(String source, DataUnit unit) {
return DataSize.parse(source, unit);
}
}
相关信息
相关文章
spring ApplicationConversionService 源码
spring ArrayToDelimitedStringConverter 源码
spring CharSequenceToObjectConverter 源码
spring CollectionToDelimitedStringConverter 源码
spring DelimitedStringToArrayConverter 源码
0
赞
- 所属分类： 后端技术
- 本文标签： Spring Boot Spring Java
热门推荐
-
2、 - 优质文章
-
3、 gate.io
-
6、 golang
-
7、 openharmony