spring OperationMethodParameter 源码
springboot OperationMethodParameter 代码
文件路径：/spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/endpoint/invoke/reflect/OperationMethodParameter.java
/*
* Copyright 2012-2021 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.actuate.endpoint.invoke.reflect;
import java.lang.reflect.Parameter;
import javax.annotation.Nonnull;
import javax.annotation.meta.When;
import org.springframework.boot.actuate.endpoint.invoke.OperationParameter;
import org.springframework.core.annotation.MergedAnnotation;
import org.springframework.core.annotation.MergedAnnotations;
import org.springframework.lang.Nullable;
import org.springframework.util.ClassUtils;
import org.springframework.util.ObjectUtils;
/**
* {@link OperationParameter} created from an {@link OperationMethod}.
*
* @author Phillip Webb
*/
class OperationMethodParameter implements OperationParameter {
private static final boolean jsr305Present = ClassUtils.isPresent("javax.annotation.Nonnull", null);
private final String name;
private final Parameter parameter;
/**
* Create a new {@link OperationMethodParameter} instance.
* @param name the parameter name
* @param parameter the parameter
*/
OperationMethodParameter(String name, Parameter parameter) {
this.name = name;
this.parameter = parameter;
}
@Override
public String getName() {
return this.name;
}
@Override
public Class<?> getType() {
return this.parameter.getType();
}
@Override
public boolean isMandatory() {
if (!ObjectUtils.isEmpty(this.parameter.getAnnotationsByType(Nullable.class))) {
return false;
}
return (jsr305Present) ? new Jsr305().isMandatory(this.parameter) : true;
}
@Override
public String toString() {
return this.name + " of type " + this.parameter.getType().getName();
}
private static class Jsr305 {
boolean isMandatory(Parameter parameter) {
MergedAnnotation<Nonnull> annotation = MergedAnnotations.from(parameter).get(Nonnull.class);
return !annotation.isPresent() || annotation.getEnum("when", When.class) == When.ALWAYS;
}
}
}
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spring OperationMethodParameters 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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