spring ArrayBinder 源码
springboot ArrayBinder 代码
文件路径：/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/context/properties/bind/ArrayBinder.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.context.properties.bind;
import java.lang.reflect.Array;
import java.util.ArrayList;
import java.util.List;
import java.util.function.Supplier;
import org.springframework.boot.context.properties.bind.Binder.Context;
import org.springframework.boot.context.properties.source.ConfigurationPropertyName;
import org.springframework.core.ResolvableType;
/**
* {@link AggregateBinder} for arrays.
*
* @author Phillip Webb
* @author Madhura Bhave
*/
class ArrayBinder extends IndexedElementsBinder<Object> {
ArrayBinder(Context context) {
super(context);
}
@Override
protected Object bindAggregate(ConfigurationPropertyName name, Bindable<?> target,
AggregateElementBinder elementBinder) {
IndexedCollectionSupplier result = new IndexedCollectionSupplier(ArrayList::new);
ResolvableType aggregateType = target.getType();
ResolvableType elementType = target.getType().getComponentType();
bindIndexed(name, target, elementBinder, aggregateType, elementType, result);
if (result.wasSupplied()) {
List<Object> list = (List<Object>) result.get();
Object array = Array.newInstance(elementType.resolve(), list.size());
for (int i = 0; i < list.size(); i++) {
Array.set(array, i, list.get(i));
}
return array;
}
return null;
}
@Override
protected Object merge(Supplier<Object> existing, Object additional) {
return additional;
}
}
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spring AggregateElementBinder 源码
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- 所属分类： 后端技术
- 本文标签： Spring Boot Java Spring
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