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spring aop 环绕通知around和其他通知的区别

2023-06-08 09:56:13
TAG: rin spr aro
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之前自己用JDK动态代理实现过AOP功能,做得比较粗糙,仅供参考。

package cn.seu.bingluo.ioc;

import java.lang.reflect.InvocationHandler;

/*

* 代理类

* 运用jdk动态代理实现,要求前提是被代理对象实现接口

*/

public class ProxyHandler implements InvocationHandler {

// 存储所有切面

private static HashMap aspectInfos = new HashMap();

// 被代理的对象

private Object target = null;

public ProxyHandler(Object target) {

this.target = target;

}

public static void addAspectInfo(AspectInfo aspectInfo) {

aspectInfos.put(aspectInfo.getExpression(), aspectInfo);

}

// 获取代理实例

public Object getProxyInstance() {

if (target == null) {

return null;

}

return Proxy.newProxyInstance(target.getClass().getClassLoader(),

target.getClass().getInterfaces(), this);

}

// 获取代理实例

public Object getProxyInstance(Object target) {

if (target == null) {

return null;

}

this.target = target;

return Proxy.newProxyInstance(target.getClass().getClassLoader(),

target.getClass().getInterfaces(), this);

}

@Override

public Object invoke(Object proxy, Method method, Object[] args)

throws Throwable {

ArrayList aspects = new ArrayList();

Set<Entry> entrySet = aspectInfos.entrySet();

Object result = null;

//遍历切面列表,找到对应的切面

for (Entry entry : entrySet) {

AspectInfo aspectInfo = entry.getValue();

Object adviceBean = aspectInfo.getAdviceBean();

String expression = aspectInfo.getExpression();

Pattern pattern = P*****.compile(expression);

Matcher matcher = pattern.matcher(target.getClass().getName() + "."

+ method.getName());

if (matcher.find()) {

AspectInfo aspect = new AspectInfo();

aspect.setAdviceBean(adviceBean);

aspect.setBeforeMethod(aspectInfo.getBeforeMethod());

aspect.setAroundMethod(aspectInfo.getAroundMethod());

aspect.setAfterMethod(aspectInfo.getAfterMethod());

aspects.add(aspect);

}

}

// 执行before增强

for (AspectInfo aspect : aspects) {

Object adviceBean = aspect.getAdviceBean();

if (aspect.getBeforeMethod() != null) {

aspect.getBeforeMethod().invoke(adviceBean, new Object[]{});

}

}

// 执行around增强

Object aroundAdviceBean = target;

Method aroundAdviceMethod = method;

Object[] aroundAdviceArgs = args;

for (AspectInfo aspect : aspects) {

Object adviceBean = aspect.getAdviceBean();

if (aspect.getAroundMethod() != null) {

aroundAdviceArgs = new Object[] { new ProceedingJoinPoint(

aroundAdviceBean, aroundAdviceMethod, aroundAdviceArgs) };

aroundAdviceBean = adviceBean;

aroundAdviceMethod = aspect.getAroundMethod();

}

}

result = aroundAdviceMethod.invoke(aroundAdviceBean, aroundAdviceArgs);

// 执行After增强

for (AspectInfo aspect : aspects) {

Object adviceBean = aspect.getAdviceBean();

if (aspect.getAfterMethod() != null) {

aspect.getAfterMethod().invoke(adviceBean, new Object[]{});

}

}

return result;

}

}

ProceedingJoinPoint.java

package cn.seu.bingluo.ioc;

import java.lang.reflect.InvocationTargetException;

/*

* 用于处理AOP代理链时,封装相关信息作为统一参数进行传递

*/

public class ProceedingJoinPoint {

private Object object;//被代理的对象

private Method method;//被代理的方法

private Object[] args;//方法相应的参数

public ProceedingJoinPoint(Object object, Method method, Object[] args){

this.object = object;

this.method = method;

this.args = args;

}

//执行目标函数

public Object excute(){

Object result = null;

try {

result = method.invoke(object, args);

} catch (IllegalArgumentException e) {

e.printStackTrace();

} catch (IllegalAccessException e) {

e.printStackTrace();

} catch (InvocationTargetException e) {

e.printStackTrace();

}

return result;

}

}

package cn.seu.bingluo.ioc;

import java.lang.reflect.Method;

/*

* 切面信息Bean

* 每1个切面最多只有:

* 1个切点expression

* 1个增强bean

* 1个前置增强、环绕增强、后置增强

*/

public class AspectInfo {

private String expression = "";

private Object adviceBean = null;

private Method beforeMethod = null;

private Method aroundMethod = null;

private Method afterMethod = null;

public AspectInfo(){

}

public AspectInfo(String expression, Object adviceBean,

Method beforeMethod, Method aroundMethod, Method afterMethod) {

setExpression(expression);

setAdviceBean(adviceBean);

setBeforeMethod(beforeMethod);

setAroundMethod(aroundMethod);

setAfterMethod(afterMethod);

}

public String getExpression() {

return expression;

}

public void setExpression(String expression) {

this.expression = expression;

}

public Object getAdviceBean() {

return adviceBean;

}

public void setAdviceBean(Object adviceBean) {

this.adviceBean = adviceBean;

}

public Method getBeforeMethod() {

return beforeMethod;

}

public void setBeforeMethod(Method beforeMethod) {

this.beforeMethod = beforeMethod;

}

public Method getAroundMethod() {

return aroundMethod;

}

public void setAroundMethod(Method aroundMethod) {

this.aroundMethod = aroundMethod;

}

public Method getAfterMethod() {

return afterMethod;

}

public void setAfterMethod(Method afterMethod) {

this.afterMethod = afterMethod;

}

}

之前自己用JDK动态代理实现过AOP功能,做得比较粗糙,仅供参考。

package cn.seu.bingluo.ioc;

import java.lang.reflect.InvocationHandler;

/*

* 代理类

* 运用jdk动态代理实现,要求前提是被代理对象实现接口

*/

public class ProxyHandler implements InvocationHandler {

// 存储所有切面

private static HashMap aspectInfos = new HashMap();

// 被代理的对象

private Object target = null;

public ProxyHandler(Object target) {

this.target = target;

}

public static void addAspectInfo(AspectInfo aspectInfo) {

aspectInfos.put(aspectInfo.getExpression(), aspectInfo);

}

// 获取代理实例

public Object getProxyInstance() {

if (target == null) {

return null;

}

return Proxy.newProxyInstance(target.getClass().getClassLoader(),

target.getClass().getInterfaces(), this);

}

// 获取代理实例

public Object getProxyInstance(Object target) {

if (target == null) {

return null;

}

this.target = target;

return Proxy.newProxyInstance(target.getClass().getClassLoader(),

target.getClass().getInterfaces(), this);

}

@Override

public Object invoke(Object proxy, Method method, Object[] args)

throws Throwable {

ArrayList aspects = new ArrayList();

Set<Entry> entrySet = aspectInfos.entrySet();

Object result = null;

//遍历切面列表,找到对应的切面

for (Entry entry : entrySet) {

AspectInfo aspectInfo = entry.getValue();

Object adviceBean = aspectInfo.getAdviceBean();

String expression = aspectInfo.getExpression();

Pattern pattern = P*****.compile(expression);

Matcher matcher = pattern.matcher(target.getClass().getName() + "."

+ method.getName());

if (matcher.find()) {

AspectInfo aspect = new AspectInfo();

aspect.setAdviceBean(adviceBean);

aspect.setBeforeMethod(aspectInfo.getBeforeMethod());

aspect.setAroundMethod(aspectInfo.getAroundMethod());

aspect.setAfterMethod(aspectInfo.getAfterMethod());

aspects.add(aspect);

}

}

// 执行before增强

for (AspectInfo aspect : aspects) {

Object adviceBean = aspect.getAdviceBean();

if (aspect.getBeforeMethod() != null) {

aspect.getBeforeMethod().invoke(adviceBean, new Object[]{});

}

}

// 执行around增强

Object aroundAdviceBean = target;

Method aroundAdviceMethod = method;

Object[] aroundAdviceArgs = args;

for (AspectInfo aspect : aspects) {

Object adviceBean = aspect.getAdviceBean();

if (aspect.getAroundMethod() != null) {

aroundAdviceArgs = new Object[] { new ProceedingJoinPoint(

aroundAdviceBean, aroundAdviceMethod, aroundAdviceArgs) };

aroundAdviceBean = adviceBean;

aroundAdviceMethod = aspect.getAroundMethod();

}

}

result = aroundAdviceMethod.invoke(aroundAdviceBean, aroundAdviceArgs);

// 执行After增强

for (AspectInfo aspect : aspects) {

Object adviceBean = aspect.getAdviceBean();

if (aspect.getAfterMethod() != null) {

aspect.getAfterMethod().invoke(adviceBean, new Object[]{});

}

}

return result;

}

}

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contextual aspects是什么意思

上下文相关的方面
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it have both good and bad aspects还是it has both good and aspects 还是it both have good and bad ?

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2023-06-08 04:07:033

请帮忙翻译这段话为英语,谢谢!请不要用机翻

6.1 the composition of the assessment system Power planning involves many aspects, in addition to the power industry of its own factors, but also social development Show, the national economy, energy strategy, structure, mineral resources, transportation, environmental carrying capacity, etc. Various interrelated factors. Power for a good plan, we must balance all the factors involved, it is Is the electric power industry and the coordinated development of other factors. With the power of the implementation of market-oriented reform, how to assess the City The basis of market mechanism role, how to rely on the market, reflecting the market, how to guide the market, regulation and control markets More complex issues, and letter to be resolved. Planning in the evaluation of power must take into consideration the above-mentioned Aspects, which makes the problem of complex interrelated factors, the broad span of time, analysis of complex models Miscellaneous, of the massive data processing, and not artificial. Therefore, only relying on the modern computing environment, information processing technology, the establishment of the planning decision-making power Evaluation platform in order to solve the above problems, the power to fundamentally improve the quality of planning. The platform involves several Database support for long-term operation of power system simulation, planning program evaluation methods, evaluation index system, data Warehouse and data mining technology, open content and other information architecture. The main components in Figure 6.1: Chapter 6 Optimization of power system planning, evaluation system 6.1.1 Data Storage and Management Data storage and management of power system planning and decision-making assessment of all aspects of the public components, provide a basis for Data storage and management, including socio-economic development, energy strategy, environmental protection, power plants, power grids, Power generation companies, climate, hydrology, power to anticipate, plan optimization, simulation evaluation, the expert knowledge, information statements Such as data, data not only mass, species are also very complex. But also in different scenarios, both Common parts and a certain degree of independence, it is necessary to give full consideration to the sharing of data and increase the efficiency of data storage, Sufficient data to do a good job in isolation, to protect an orderly system. In addition the market environment, information security and asked Essential questions, data needs nuanced permissions. This is in clear stratification of the data definition: ) l the basis of data layers: the meaning has not been dealt with planning to optimize the data, such as the national economy, the negative Load forecasting, energy, transportation, environmental protection, and system operation history, status quo power grid, Generation resources to be elected; ) l optimal planning data layers: the meaning of conducting the electric power industry and national economy, energy transport, environment Protection, the power grid to optimize the process of coordination of data and results, including the macro-planning, sensitivity analysis Macro-planning and decision-making and other data; 2) competition planning / network planning data layers: the meaning of competitive power market transaction data, as well as planning grid The results of the company"s network planning data; 3) operator analog data layers: the meaning of market-based planning environment for the power of traditional production Modeling and simulation market, all the data carriers require detailed data to each time, so for the next phase Provide a detailed assessment of the data analysis; 4) evaluation of system data layers: the meaning of the evaluation system to assess all the indicators of the results of the calculation. 6.1.2 Evaluation of operations and planning simulation Judging from the structure of the system, in order to achieve a comprehensive, detailed planning assessment, in order to provide scientific decision-making Support information needed to use the basis of data layers, and optimize the planning data layers, competition planning / network planning data layers, Analog data carrier data layer. Planning and competitive industry organizations planning process, research methods, as well as model Algorithm in the previous section of this article has already been done in-depth study. Operation planning of power system simulation is an important means of assessment, "" 2 a "5], not only on the power system security, stability Scheduled, reliable operation with a key role, but also give full play to the effectiveness of the mechanism of market competition has Significance. In this regard have already been some research, this article will not repeat it here. Traditional scheme of the power planning model has a number of evaluation indicators, including: the cost of statistics,
2023-06-08 04:07:102

关于aspect在作文中 的用法,一方面和另一方面是用in还是用on

in
2023-06-08 04:07:312

aspect和respect的区别

aspect 是指事态 想法 计划等的某个方面 比如说 the training program covers every aspect of the job.训练计划的范围包括了这个工作的各各方面 repect 是指某一细节的方面 比如说 in many respects pf the new version is less good than the old one.从许多方面来看 新的版本并不比旧的强.
2023-06-08 04:07:392

aspect用什么介词

aspect用介词in,因为aspect意为“方面;方向;形势;外貌”,习惯搭配是介词in,in&all&aspects&in&every&aspect意为一方面......另一方面.....,所以,aspect用介词in。
2023-06-08 04:07:451

用aspect多是和of连用,但英语书上有一句there are many aspects to

aspectof和aspectto都可以,表达的意思也一样。of有明确的“归属”含意,但to有时也有“归属“的含意。比如:Therearetwoaspectsoftheproblem/Therearetwoaspectstotheproblem.都表达“问题有两个方面”希望对你有帮助。
2023-06-08 04:07:522

英语中的aspect(体)是指的是什么?包括哪些种类?与tense(时)有何区别?

aspect包括simple perfective progressive而tense 三种体包括 present past future三种时态
2023-06-08 04:08:082

aspect.??/什么意思?

方面,领域
2023-06-08 04:08:175

“在很多方面”用英语怎样说?

in many cases
2023-06-08 04:08:345

在某些方面是in some aspects, 还是 at some aspects

in some aspects
2023-06-08 04:08:503

电话坏了用英语怎么说

问题一:我的电话坏了英语翻译 我的电话坏了 My phone was out of order. =my phone doesn"t work. out of order:介词短语,意思是状态不好.次序颠倒,不整齐. 很多情况下都可以用这个短语,下面是一些例子. out of order:发生故障;是常用固定短语 eg: Is you phone out of order? 你的电话是不是出故障了? The chairman ruled his proposal out of order. 主席宣布他的提案不合要求 问题二:我的电话坏了。用英语写 My phone is bad 问题三:英语中 电话坏了怎么说 含有助动词 你好 电话坏了 翻译成英语是: The phone is broken. 问题四:我昨天电话坏了用英语怎么说 I feel sorry that somthing is wrong with my telephone(mobile phone).I call yo亥 today and want to know if you are angry. I say sorry to you one more time. 问题五:“坏掉的”“坏的”英文怎么写? broken指机器坏了,ruined指毁坏。不知你要什么样的 问题六:有好的地方也有坏的地方地方用英语怎么说 地方 可以翻译成things,aspects,sides 有好的地方,也有坏的地方 There are good aspects and bad aspects There"s a good side of the world also a bad side 问题七:坏用英语怎么说。 坏 spoiled bad 相关解释: badness 例句: 你撞到了我的手肘,弄坏了我正在画的图画。 You jogged my elbow and spoiled what I was drawing. 我认为直截了当地告诉他这个坏消息倒是友好的行为。 I think it would be a kindness to tell him the bad news straight away. 我觉得我没有勇气告诉他这个坏消息。 I don"t think I have the courage to tell him the bad news.
2023-06-08 04:08:561

on many aspects

B 解析: 这题考查介词的用法:第一空填over,词组:have advantages over“比…有优势”,第二空填in,词组in many aspects“在很多方面”。选B
2023-06-08 04:09:141

"The negative aspects are also apparent."什么意思?

大概是负面影响也很明显
2023-06-08 04:09:232

方面用英语怎么说

问题一:在各个方面 用英文怎么说 在各个方面的英文是in all respects,详细信息如下: in all respects 【词典】处处 例句: This essay is admirable in all respects. 这篇文章在各方面都很值得欣赏。 问题二:在...方面英文怎么说 在…方面 建议以用“in...respect” 即可; {“in the aspect of”虽也有同样意思,但通常有点偏向于“从...角度”而言 } {“in terms of”= 在…方面,就…来说} 在文学方面 in literature respect 但在另一种句中的表述情况时就无须这么说了,可直接用“in....”例如: 文学方面的成就 ------in literary acplishments 他在文学方面取得的成就------he has achieved in literature 请注意按适当语境情况来选用。 问题三:在...方面 用英语怎么说? in terms of in...field 适应:adjust to/adapt to 依我看:in my opinion,as far as I am concerned 无济于事:nothing could help. 作文里经常写~ 问题四:在各个方面 用英文怎么说 in all aspects 问题五:在很多方面~用英语怎么说? 1 in many ways 2 in many aspects 问题六:在某方面用英语怎么说 On the one hand 问题七:"在学习方面"用英文怎么说 as to study when i处 es to study 说到学习 in study 也是对的,不过上面两句是高级句型 祝楼主进步! 要是答案还满意的话,记得采纳哦,O(∩_∩)O谢谢~! 问题八:在u30fbu30fbu30fb方面做出选择用英语怎么说 Make a choice in 重点词汇释义 方面 aspect; side; respect; field; facet 做出选择 make a choice 问题九:在。。。方面有经验用英语怎么说? have experience in --- area/aspect.
2023-06-08 04:09:591

angle aspect 表示角度时有何区别

第一幅只是个画师原创,不是动漫。第二幅是《angle beat》
2023-06-08 04:10:062

pay attention to the following aspects 这句英语的中文意思

翻译:(请)注意以下(几个)方面 pay attention to 注意; following 以下的 aspect 方面
2023-06-08 04:10:131

用from every aspects造句

He introduced his school to me from every aspect.(应该是aspect吧?every后应加单数,是不是抄错了?)
2023-06-08 04:10:201

in other aspects

句子本身写错了的,应该是用does 才对. and 前后并列必须形式一致
2023-06-08 04:10:271

The negative aspects are also apparent.什么意思?

The negative aspects are also apparent.消极方面也很明显。重点词汇解释:1、negativeadj. 负的;消极的;否定的;阴性的n. 否定;负数;底片vt. 否定;拒绝2、aspectn. 方面;方向;形势;外貌3、apparentadj. 显然的;表面上的扩展资料:aspect的用法:aspect表示事物等的方面时,专指由意外情况或特殊原因造成的表面变化。aspect 表示外貌;外表时,多用于文学作品中。用于人时指某人所特有的外貌。用于(事)物时指某(事)物给人造成的特殊印象。暗示人或物的外貌,外观由于观察者角度或看法的改变而产生了剧变。aspect表示朝向;方位时,一般指窗户或建筑物的正立面所朝的方向。
2023-06-08 04:10:341

请帮我翻译一下这几个短句,意思差不多就行了~ ~ ~

It"s no big deal.She feels that she can"t compete with others in anything.have few friends to talk from heart.at certain aspects
2023-06-08 04:10:487

关于come to grips with这个短语, 这里grips是名词还是动词, 如果是动词,为什么不用原形

grips 是名词It uses plural form, i.e. grips, here because the grips are for the sustance and the superficial aspects of the issue. Your understanding is quite correct. Only a little modification here.“既要解决本质问题,又要解决表面问题(解决这些表面问题只能迫使我们不断地把这个问题列入安理会的议程)”书上的译本是在翻译这段文字的意思,而不是在转换一个定语重句。请不要混淆,翻译不是在把一国语文的语法套在别国的文字上。没有专业的译者会为翻译一个定语从句而费心的。要做到真正的翻译,必须要抛开源语文的语法桎梏,它是一个语言再创作的过程。I came up with an alternative option for your reference.我们必须找出一个既能治标、又能治本的整体解决方案,否则,仅仅有治标的办法只会迫使我们把这个问题一直搁在安理会的议程中。
2023-06-08 04:11:021

论文摘要翻译,不要软件翻译,急急急!

很高兴为您解答:如果答案对您有帮助,望采纳,您的支持是我前进的动力,祝您生活愉快。手动翻译:EssentialmedicinesysteminChinaistheessentialdruglistmaking,supply,procurement,distribution,production,pricemanagement,paymentoffairuseclaims,qualitycontrol,monitoringandevaluation,andotheraspectsoftheplaceofeffectivemanagementofsystems.Also,isoneofthecorecontentofourdrugpolicy.Thispaperanalyzesthecurrentsystemofdrugevaluation,describedthedrugproblemsinthesystem:essentialmedicinesselectionprocessisnottransparent,lackofselectionbasedonexpertevaluationmethodsarenotperfect,whichhighlighttheimportanceofperfectingcurrentdrugevaluationexpertevaluation.Combinationoftheaboveproblems,methodsofanalysiscurrentlyavailabledrugselection,combinedwithcaseillustratesthemethodsofdeterminingtheweightofexpertevaluationandtheformofvoting.Finally,fromtwoaspectstoimproveChina"sbasicdrugresearch--ontheonehand,optimizationofexistingformsofevaluation,namelyestablishingscientificevaluationcriteriaforexpertevaluation"tofollow",integratedvariousaspects,topromoteopenness.Theotherhand,reducethecostofbasicdrugresearch,makestheessentialdrugsystemcompatiblewiththecomplexsituationofourcountry.
2023-06-08 04:11:201