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enhance aop

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This commit is contained in:
Looly 2019-09-27 23:20:43 +08:00
parent 5b5645cbbb
commit 45609bc22b
8 changed files with 280 additions and 250 deletions
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8
hutool-aop/src/main/java/cn/hutool/aop/aspects/Aspect.java
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@ -9,7 +9,7 @@ import java.lang.reflect.Method;
* @author ted.L
* @since 4.18
*/
public interface Aspect{
public interface Aspect {
/**
* 目标方法执行前的操作
@ -24,15 +24,15 @@ public interface Aspect{
/**
* 目标方法执行后的操作
* 如果 target.method 抛出异常且
* @see Aspect#afterException 返回true,则不会执行此操作
* 如果
* @see Aspect#afterException 返回false,则无论target.method是否抛出异常，均会执行此操作
*
* @param target 目标对象
* @param method 目标方法
* @param args 参数
* @param returnVal 目标方法执行返回值
* @return 是否允许返回值（接下来的操作）
* @see Aspect#afterException 返回true,则不会执行此操作
* 如果
* @see Aspect#afterException 返回false,则无论target.method是否抛出异常，均会执行此操作
*/
boolean after(Object target, Method method, Object[] args, Object returnVal);

32
hutool-aop/src/main/java/cn/hutool/aop/aspects/SimpleAspect.java
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@ -7,37 +7,41 @@ import java.lang.reflect.Method;
* 简单切面类，不做任何操作<br>
* 可以继承此类实现自己需要的方法即可
*
* @author Looly
* @author ted.L
*
* @author Looly, ted.L
*/
public abstract class SimpleAspect implements Aspect, Serializable{
public class SimpleAspect implements Aspect, Serializable {
private static final long serialVersionUID = 1L;
/**
* @see Aspect#before(Object, Method, Object[])
* @return 是否继续执行接下来的操作 默认值true
*/
@Override
public boolean before(Object target, Method method, Object[] args) {
//继承此类后实现此方法
return true;
}
/**
* @see Aspect#after(Object, Method, Object[], Object)
* @return 是否允许返回值（接下来的操作） 默认值true
* 目标方法执行后的操作
* 如果 target.method 抛出异常且
*
* @param target 目标对象
* @param method 目标方法
* @param args 参数
* @return 是否允许返回值（接下来的操作）
* @see Aspect#afterException 返回true,则不会执行此操作
* 如果
* @see Aspect#afterException 返回false,则无论target.method是否抛出异常，均会执行此操作
*/
public boolean after(Object target, Method method, Object[] args) {
//继承此类后实现此方法
return after(target, method, args, null);
}
@Override
public boolean after(Object target, Method method, Object[] args, Object returnVal) {
//继承此类后实现此方法
return true;
}
/**
* @see Aspect#afterException(Object, Method, Object[], Throwable)
* @return 是否允许抛出异常 默认值true
*/
@Override
public boolean afterException(Object target, Method method, Object[] args, Throwable e) {
//继承此类后实现此方法

8
hutool-aop/src/main/java/cn/hutool/aop/aspects/TimeIntervalAspect.java
View File

@ -8,8 +8,8 @@ import cn.hutool.core.util.StrUtil;
/**
* 通过日志打印方法的执行时间的切面
* @author Looly
*
* @author Looly
*/
public class TimeIntervalAspect extends SimpleAspect {
private static final long serialVersionUID = 1L;
@ -24,7 +24,11 @@ public class TimeIntervalAspect extends SimpleAspect {
@Override
public boolean after(Object target, Method method, Object[] args, Object returnVal) {
Console.log("Method [{}.{}] execute spend [{}]ms return value [{}]", target.getClass().getName(), method.getName(), interval.intervalMs(), StrUtil.toString(returnVal));
Console.log("Method [{}.{}] execute spend [{}]ms return value [{}]",
target.getClass().getName(), //
method.getName(), //
interval.intervalMs(), //
returnVal);
return true;
}
}

29
hutool-aop/src/main/java/cn/hutool/aop/interceptor/CglibInterceptor.java
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@ -1,20 +1,17 @@
package cn.hutool.aop.interceptor;
import cn.hutool.aop.aspects.Aspect;
import net.sf.cglib.proxy.MethodInterceptor;
import net.sf.cglib.proxy.MethodProxy;
import java.io.Serializable;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import cn.hutool.aop.aspects.Aspect;
import cn.hutool.core.exceptions.UtilException;
import net.sf.cglib.proxy.MethodInterceptor;
import net.sf.cglib.proxy.MethodProxy;
/**
* Cglib实现的动态代理切面
*
* @author looly
* @author ted.L
*
* @author looly, ted.L
*/
public class CglibInterceptor implements MethodInterceptor, Serializable {
private static final long serialVersionUID = 1L;
@ -40,22 +37,20 @@ public class CglibInterceptor implements MethodInterceptor, Serializable {
@Override
public Object intercept(Object obj, Method method, Object[] args, MethodProxy proxy) throws Throwable {
Object result = null;
// 开始前回调
if (aspect.before(target, method, args)) {
try {
// result = ReflectUtil.invoke(target, method, args);
result = proxy.invokeSuper(obj, args);
} catch (UtilException e) {
final Throwable cause = e.getCause();
if (!(e.getCause() instanceof InvocationTargetException)) {
// 其它异常属于代理的异常，直接抛出
} catch (InvocationTargetException e) {
// 异常回调（只捕获业务代码导致的异常，而非反射导致的异常）
if (aspect.afterException(target, method, args, e.getTargetException())) {
throw e;
}
if(aspect.afterException(target, method, args, ((InvocationTargetException) cause).getTargetException())){
throw e;
}
}
}
}
// 结束执行回调
if (aspect.after(target, method, args, result)) {
return result;
}

22
hutool-aop/src/main/java/cn/hutool/aop/interceptor/JdkInterceptor.java
View File

@ -7,6 +7,7 @@ import java.lang.reflect.Method;
import cn.hutool.aop.aspects.Aspect;
import cn.hutool.core.exceptions.UtilException;
import cn.hutool.core.util.ClassUtil;
import cn.hutool.core.util.ReflectUtil;
/**
@ -14,9 +15,8 @@ import cn.hutool.core.util.ReflectUtil;
*
* @author Looly
* @author ted.L
*
*/
public class JdkInterceptor implements InvocationHandler, Serializable{
public class JdkInterceptor implements InvocationHandler, Serializable {
private static final long serialVersionUID = 1L;
private Object target;
@ -42,20 +42,22 @@ public class JdkInterceptor implements InvocationHandler, Serializable{
final Object target = this.target;
final Aspect aspect = this.aspect;
Object result = null;
// 开始前回调
if (aspect.before(target, method, args)) {
ReflectUtil.setAccessible(method);
try {
result = ReflectUtil.invoke(target, method, args);
} catch (UtilException e) {
final Throwable cause = e.getCause();
if (!(e.getCause() instanceof InvocationTargetException)) {
// 其它异常属于代理的异常，直接抛出
throw e;
}
if(aspect.afterException(target, method, args, ((InvocationTargetException) cause).getTargetException())){
result = method.invoke(ClassUtil.isStatic(method) ? null : target, args);
} catch (InvocationTargetException e) {
// 异常回调（只捕获业务代码导致的异常，而非反射导致的异常）
if (aspect.afterException(target, method, args, e.getTargetException())) {
throw e;
}
}
}
// 结束执行回调
if (aspect.after(target, method, args, result)) {
return result;
}

8
hutool-aop/src/main/java/cn/hutool/aop/proxy/JdkProxyFactory.java
View File

@ -8,14 +8,16 @@ import cn.hutool.aop.interceptor.JdkInterceptor;
* JDK实现的切面代理
*
* @author looly
*
*/
public class JdkProxyFactory extends ProxyFactory{
public class JdkProxyFactory extends ProxyFactory {
private static final long serialVersionUID = 1L;
@Override
@SuppressWarnings("unchecked")
public <T> T proxy(T target, Aspect aspect) {
return (T) ProxyUtil.newProxyInstance(target.getClass().getClassLoader(), new JdkInterceptor(target, aspect), target.getClass().getInterfaces());
return (T) ProxyUtil.newProxyInstance(//
target.getClass().getClassLoader(), //
new JdkInterceptor(target, aspect), //
target.getClass().getInterfaces());
}
}

8
hutool-aop/src/test/java/cn/hutool/aop/test/AopTest.java
View File

@ -1,5 +1,6 @@
package cn.hutool.aop.test;
import cn.hutool.core.lang.Console;
import org.junit.Assert;
import org.junit.Test;
@ -10,7 +11,6 @@ import cn.hutool.aop.aspects.TimeIntervalAspect;
* AOP模块单元测试
*
* @author Looly
*
*/
public class AopTest {
@ -40,7 +40,6 @@ public class AopTest {
* 有接口
*
* @author looly
*
*/
static class Cat implements Animal {
@ -51,7 +50,7 @@ public class AopTest {
@Override
public void seize() {
System.out.println("抓了条鱼");
Console.log("抓了条鱼");
}
}
@ -59,7 +58,6 @@ public class AopTest {
* 无接口
*
* @author looly
*
*/
static class Dog {
public String eat() {
@ -67,7 +65,7 @@ public class AopTest {
}
public void seize() {
System.out.println("抓了只鸡");
Console.log("抓了只鸡");
}
}
}

81
hutool-core/src/main/java/cn/hutool/core/util/ReflectUtil.java
View File

@ -1,13 +1,5 @@
package cn.hutool.core.util;
import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import cn.hutool.core.collection.CollectionUtil;
import cn.hutool.core.convert.Convert;
import cn.hutool.core.exceptions.UtilException;
@ -15,6 +7,15 @@ import cn.hutool.core.lang.Assert;
import cn.hutool.core.lang.Filter;
import cn.hutool.core.lang.SimpleCache;
import java.lang.reflect.AccessibleObject;
import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
/**
* 反射工具类
*
@ -23,14 +24,21 @@ import cn.hutool.core.lang.SimpleCache;
*/
public class ReflectUtil {
/** 构造对象缓存 */
/**
* 构造对象缓存
*/
private static final SimpleCache<Class<?>, Constructor<?>[]> CONSTRUCTORS_CACHE = new SimpleCache<>();
/** 字段缓存 */
/**
* 字段缓存
*/
private static final SimpleCache<Class<?>, Field[]> FIELDS_CACHE = new SimpleCache<>();
/** 方法缓存 */
/**
* 方法缓存
*/
private static final SimpleCache<Class<?>, Method[]> METHODS_CACHE = new SimpleCache<>();
// --------------------------------------------------------------------------------------------------------- Constructor
/**
* 查找类中的指定参数的构造方法，如果找到构造方法，会自动设置可访问为true
*
@ -51,7 +59,7 @@ public class ReflectUtil {
pts = constructor.getParameterTypes();
if (ClassUtil.isAllAssignableFrom(pts, parameterTypes)) {
// 构造可访问
constructor.setAccessible(true);
setAccessible(constructor);
return (Constructor<T>) constructor;
}
}
@ -91,6 +99,7 @@ public class ReflectUtil {
}
// --------------------------------------------------------------------------------------------------------- Field
/**
* 查找指定类中是否包含指定名称对应的字段，包括所有字段（包括非public字段），也包括父类和Object类的字段
*
@ -195,8 +204,8 @@ public class ReflectUtil {
if (null == obj || null == field) {
return null;
}
field.setAccessible(true);
Object result = null;
setAccessible(field);
Object result;
try {
result = field.get(obj);
} catch (IllegalAccessException e) {
@ -207,6 +216,7 @@ public class ReflectUtil {
/**
* 获取所有字段的值
*
* @param obj bean对象
* @return 字段值数组
* @since 4.1.17
@ -253,14 +263,15 @@ public class ReflectUtil {
public static void setFieldValue(Object obj, Field field, Object value) throws UtilException {
Assert.notNull(obj);
Assert.notNull(field, "Field in [{}] not exist !", obj.getClass().getName());
field.setAccessible(true);
if(null != value) {
setAccessible(field);
if (null != value) {
Class<?> fieldType = field.getType();
if(false == fieldType.isAssignableFrom(value.getClass())) {
if (false == fieldType.isAssignableFrom(value.getClass())) {
//对于类型不同的字段，尝试转换，转换失败则使用原对象类型
final Object targetValue = Convert.convert(fieldType, value);
if(null != targetValue) {
if (null != targetValue) {
value = targetValue;
}
}
@ -274,6 +285,7 @@ public class ReflectUtil {
}
// --------------------------------------------------------------------------------------------------------- method
/**
* 获得指定类本类及其父类中的Public方法名<br>
* 去重重载的方法
@ -282,9 +294,9 @@ public class ReflectUtil {
* @return 方法名Set
*/
public static Set<String> getPublicMethodNames(Class<?> clazz) {
final HashSet<String> methodSet = new HashSet<String>();
final HashSet<String> methodSet = new HashSet<>();
final Method[] methodArray = getPublicMethods(clazz);
if(ArrayUtil.isNotEmpty(methodArray)) {
if (ArrayUtil.isNotEmpty(methodArray)) {
for (Method method : methodArray) {
methodSet.add(method.getName());
}
@ -541,7 +553,7 @@ public class ReflectUtil {
* @throws SecurityException 安全异常
*/
public static Set<String> getMethodNames(Class<?> clazz) throws SecurityException {
final HashSet<String> methodSet = new HashSet<String>();
final HashSet<String> methodSet = new HashSet<>();
final Method[] methods = getMethods(clazz);
for (Method method : methods) {
methodSet.add(method.getName());
@ -643,6 +655,7 @@ public class ReflectUtil {
}
// --------------------------------------------------------------------------------------------------------- newInstance
/**
* 实例化对象
*
@ -682,7 +695,7 @@ public class ReflectUtil {
final Class<?>[] paramTypes = ClassUtil.getClasses(params);
final Constructor<T> constructor = getConstructor(clazz, paramTypes);
if (null == constructor) {
throw new UtilException("No Constructor matched for parameter types: [{}]", new Object[] { paramTypes });
throw new UtilException("No Constructor matched for parameter types: [{}]", new Object[]{paramTypes});
}
try {
return constructor.newInstance(params);
@ -714,18 +727,18 @@ public class ReflectUtil {
if (0 == parameterTypes.length) {
continue;
}
constructor.setAccessible(true);
setAccessible(constructor);
try {
return constructor.newInstance(ClassUtil.getDefaultValues(parameterTypes));
} catch (Exception e) {
} catch (Exception ignore) {
// 构造出错时继续尝试下一种构造方式
continue;
}
}
return null;
}
// --------------------------------------------------------------------------------------------------------- invoke
/**
* 执行静态方法
*
@ -784,9 +797,7 @@ public class ReflectUtil {
*/
@SuppressWarnings("unchecked")
public static <T> T invoke(Object obj, Method method, Object... args) throws UtilException {
if (false == method.isAccessible()) {
method.setAccessible(true);
}
setAccessible(method);
try {
return (T) method.invoke(ClassUtil.isStatic(method) ? null : obj, args);
@ -813,4 +824,18 @@ public class ReflectUtil {
}
return invoke(obj, method, args);
}
/**
* 设置方法为可访问（私有方法可以被外部调用）
*
* @param <T> AccessibleObject的子类，比如Class、Method、Field等
* @param accessibleObject 可设置访问权限的对象，比如Class、Method、Field等
* @since 4.6.8
*/
public static <T extends AccessibleObject> T setAccessible(T accessibleObject) {
if (null != accessibleObject && false == accessibleObject.isAccessible()) {
accessibleObject.setAccessible(true);
}
return accessibleObject;
}
}