spring security MethodInvocationAdapter 源码
spring security MethodInvocationAdapter 代码
文件路径：/core/src/main/java/org/springframework/security/access/intercept/aspectj/MethodInvocationAdapter.java
/*
* Copyright 2002-2016 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.security.access.intercept.aspectj;
import java.lang.reflect.AccessibleObject;
import java.lang.reflect.Method;
import org.aopalliance.intercept.MethodInvocation;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.reflect.CodeSignature;
import org.springframework.util.Assert;
/**
* Decorates a JoinPoint to allow it to be used with method-security infrastructure
* classes which support {@code MethodInvocation} instances.
*
* @author Luke Taylor
* @since 3.0.3
*/
public final class MethodInvocationAdapter implements MethodInvocation {
private final ProceedingJoinPoint jp;
private final Method method;
private final Object target;
MethodInvocationAdapter(JoinPoint jp) {
this.jp = (ProceedingJoinPoint) jp;
if (jp.getTarget() != null) {
this.target = jp.getTarget();
}
else {
// SEC-1295: target may be null if an ITD is in use
this.target = jp.getSignature().getDeclaringType();
}
String targetMethodName = jp.getStaticPart().getSignature().getName();
Class<?>[] types = ((CodeSignature) jp.getStaticPart().getSignature()).getParameterTypes();
Class<?> declaringType = jp.getStaticPart().getSignature().getDeclaringType();
this.method = findMethod(targetMethodName, declaringType, types);
Assert.notNull(this.method, () -> "Could not obtain target method from JoinPoint: '" + jp + "'");
}
private Method findMethod(String name, Class<?> declaringType, Class<?>[] params) {
Method method = null;
try {
method = declaringType.getMethod(name, params);
}
catch (NoSuchMethodException ignored) {
}
if (method == null) {
try {
method = declaringType.getDeclaredMethod(name, params);
}
catch (NoSuchMethodException ignored) {
}
}
return method;
}
@Override
public Method getMethod() {
return this.method;
}
@Override
public Object[] getArguments() {
return this.jp.getArgs();
}
@Override
public AccessibleObject getStaticPart() {
return this.method;
}
@Override
public Object getThis() {
return this.target;
}
@Override
public Object proceed() throws Throwable {
return this.jp.proceed();
}
}
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