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java - 微信公眾號(hào)支付成功， 但是notify_url無(wú)法收到回調(diào)？

支付成功，但是notify_url沒(méi)有反應(yīng)， 沒(méi)有帶參數(shù)。 抱怨下， 微信的文檔寫(xiě)的真差。 謝謝各位， 其實(shí)回調(diào)是有收到的， 但是同事的代碼寫(xiě)的太爛， 報(bào)錯(cuò)沒(méi)反應(yīng)的。 問(wèn)題已經(jīng)解決了。

From [Javadiscussion group] 2017-04-18 10:15:39 0  4  1037

java - 字符串型IP地址從小到大排序

數(shù)據(jù)庫(kù)有IP一列，我想取出時(shí)按從小到大排列，但因?yàn)槭亲址?，排列結(jié)果變成了x.x.x.1x.x.x.10x.x.x.11x.x.x.2.....有沒(méi)有辦法讓字符串像數(shù)字一樣從小到大排列？或者取出后在java中有什么辦法...

From [Javadiscussion group] 2017-04-18 09:54:59 0  7  1037

java - dubbo distributed call passing parameters

Background: The existing code is being modified. The original structure is to directly complete all business l...

From [Javadiscussion group] 2017-06-14 10:51:38 0  1  1036

Common design patterns in java

Recently I want to study design patterns, but there are quite a few design patterns. I would like to ask what ...

From [Javadiscussion group] 2017-05-27 17:41:16 0  8  1036

java - MyBatis動(dòng)態(tài)SQL實(shí)現(xiàn)ORDER BY和LIMIT的控制？

MyBatis如果想用動(dòng)態(tài)SQL實(shí)現(xiàn)ORDER BY和LIMIT語(yǔ)句的運(yùn)行與否，怎么辦？

From [Javadiscussion group] 2017-04-18 10:48:56 0  1  1036

java - 免安裝的JDK如何獲??？

請(qǐng)問(wèn)免安裝的JDK(也有JRE)是如何獲取的，網(wǎng)上很多都是直接像CSDN或者網(wǎng)盤(pán)下載，他們那些綠色免安裝的是如何實(shí)現(xiàn)的，我有個(gè)想法是不是直接把安裝好的JDK的文件夾copy出來(lái)就可以了？

From [Javadiscussion group] 2017-04-17 13:37:58 0  4  1036

java - websocket api開(kāi)發(fā)客戶端如何保持鏈接不斷開(kāi)，在沒(méi)有數(shù)據(jù)傳輸?shù)臅r(shí)候

最近用java websocket開(kāi)發(fā)的客戶端程序，在和服務(wù)端鏈接通后，在數(shù)據(jù)傳輸完畢后，客戶端自動(dòng)關(guān)閉了鏈接，如何能保持鏈接不斷開(kāi) 這個(gè)是客戶端的啟動(dòng)類(lèi)，在循環(huán)完畢后，會(huì)自動(dòng)斷開(kāi)和服務(wù)器的鏈接，開(kāi)始懷疑是sessio....

From [Javadiscussion group] 2017-04-18 10:32:59 0  3  1035

Does anyone know how to use IDEA to package JavaFX projects?

A novice is new to the JavaFX project and uses IDEA as a development tool. No one in the company will use this...

From [Javadiscussion group] 2017-06-30 09:54:41 0  1  1034

kafka cannot connect to write

When calling the producer remotely to write data, the following error occurs: ERROR Error when sending message...

From [Javadiscussion group] 2017-06-15 09:21:24 0  1  1034

java - How to call a piece of code by default before calling static method?

I now have a tool class with static methods in it, dedicated to external calls. Now I hope that before each ca...

From [Javadiscussion group] 2017-06-12 09:25:34 0  8  1034

java - macbook failed to install maven, -bash: mvn: command not found

When installing maven, it reported -bash: mvn: command not found. I checked multiple environment variables and...

From [Javadiscussion group] 2017-05-27 17:41:45 0  4  1034

java - slf4j+logback無(wú)法輸出日志？

pom.xml中已經(jīng)引入依賴 {代碼...} 在resources目錄下已經(jīng)創(chuàng)建了logback.xml {代碼...} 測(cè)試類(lèi)中已經(jīng)引入了logger {代碼...} 測(cè)試通過(guò)但是控制臺(tái)不打印日志 {代碼...} 請(qǐng)問(wèn)...

From [Javadiscussion group] 2017-04-18 10:19:02 0  1  1034

java - eclipse打包war包時(shí)，提示錯(cuò)誤Module name is invalid

項(xiàng)目啟動(dòng)我是用gwt的，想導(dǎo)出個(gè).war包，部署到tomcat中玩玩。

From [Javadiscussion group] 2017-04-17 17:57:38 0  1  1033

java編譯器報(bào)錯(cuò)，類(lèi)型ListIterator不帶有參數(shù)?

{代碼...} 編譯報(bào)錯(cuò)，類(lèi)型ListIterator不帶有參數(shù)，請(qǐng)問(wèn)是什么原因，上面的這段代碼應(yīng)該怎么修改，謝謝。JDK版本1.8.0_65

From [Javadiscussion group] 2017-04-17 16:21:22 0  4  1033

通過(guò)MyEclipse啟動(dòng)tomcat跟通過(guò)start.bat啟動(dòng)有什么區(qū)別？

都是調(diào)用的Catalina.bat?可是我測(cè)試了一下，在MyEclipse中添加了啟動(dòng)tomcat的內(nèi)存參數(shù)，也在Catalina中添加了，通過(guò)MyEclipse啟動(dòng)的時(shí)候?yàn)槭裁磮?zhí)行的是MyEclipse中添加的而不是C...

From [Javadiscussion group] 2016-11-15 17:00:54 0  2  1033