spring ScheduledMethodRunnable 源码
spring ScheduledMethodRunnable 代码
文件路径：/spring-context/src/main/java/org/springframework/scheduling/support/ScheduledMethodRunnable.java
/*
* Copyright 2002-2018 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.scheduling.support;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.lang.reflect.UndeclaredThrowableException;
import org.springframework.util.ReflectionUtils;
/**
* Variant of {@link MethodInvokingRunnable} meant to be used for processing
* of no-arg scheduled methods. Propagates user exceptions to the caller,
* assuming that an error strategy for Runnables is in place.
*
* @author Juergen Hoeller
* @since 3.0.6
* @see org.springframework.scheduling.annotation.ScheduledAnnotationBeanPostProcessor
*/
public class ScheduledMethodRunnable implements Runnable {
private final Object target;
private final Method method;
/**
* Create a {@code ScheduledMethodRunnable} for the given target instance,
* calling the specified method.
* @param target the target instance to call the method on
* @param method the target method to call
*/
public ScheduledMethodRunnable(Object target, Method method) {
this.target = target;
this.method = method;
}
/**
* Create a {@code ScheduledMethodRunnable} for the given target instance,
* calling the specified method by name.
* @param target the target instance to call the method on
* @param methodName the name of the target method
* @throws NoSuchMethodException if the specified method does not exist
*/
public ScheduledMethodRunnable(Object target, String methodName) throws NoSuchMethodException {
this.target = target;
this.method = target.getClass().getMethod(methodName);
}
/**
* Return the target instance to call the method on.
*/
public Object getTarget() {
return this.target;
}
/**
* Return the target method to call.
*/
public Method getMethod() {
return this.method;
}
@Override
public void run() {
try {
ReflectionUtils.makeAccessible(this.method);
this.method.invoke(this.target);
}
catch (InvocationTargetException ex) {
ReflectionUtils.rethrowRuntimeException(ex.getTargetException());
}
catch (IllegalAccessException ex) {
throw new UndeclaredThrowableException(ex);
}
}
@Override
public String toString() {
return this.method.getDeclaringClass().getName() + "." + this.method.getName();
}
}
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