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java - Configuring tomcat installation-free version, unable to start, returning error code 4

JDK was installed two years ago, so I installed tomcat directly today, and then the following prompt popped up...

From [Javadiscussion group] 2017-06-12 09:21:32 0  2  1260

java中的orm框架

很久沒(méi)做java后臺(tái)了，都不知道java發(fā)展的怎么樣了。 現(xiàn)在ORM框架主流還是hibernate嘛， ibtais和mybatis哪個(gè)用的多點(diǎn)。請(qǐng)大牛指點(diǎn) 補(bǔ)充:mybatis是ibatis的升級(jí)，是不是說(shuō)明ibati...

From [Javadiscussion group] 2017-04-17 13:03:43 0  13  1260

java - Does ehcache cache use virtual machine memory?

Does ehcache cache use virtual machine memory or other memory? Is the bottom layer of ehcache map? How does he...

From [Javadiscussion group] 2017-06-23 09:13:46 0  1  1257

java - http請(qǐng)求返回200，對(duì)方服務(wù)器一定是收到請(qǐng)求了嗎？

Http請(qǐng)求，用response.getStatusLine().getStatusCode()判斷返回值為200，是不是說(shuō)明對(duì)方一定收到請(qǐng)求了？對(duì)方是IIS服務(wù)器，我的方法已經(jīng)正確返回200，日志有打印，對(duì)方卻一直咬定...

From [Javadiscussion group] 2017-04-18 10:50:12 0  4  1257

java - spring aop層報(bào)錯(cuò)會(huì)影響,主程序運(yùn)行嗎?

我遇到aop層代碼,報(bào)錯(cuò)了,主程序本來(lái)沒(méi)有錯(cuò),但因?yàn)閍op層報(bào)錯(cuò),直接導(dǎo)致主程序被終止.目前問(wèn)題代碼已經(jīng)解決,但不知道是什么原理或者原因

From [Javadiscussion group] 2017-04-17 17:32:21 0  2  1257

java - this in anonymous inner class, how to get in lambda?

{Code...} If the above code is converted into lambda, this will point to the external class, and the listener ...

From [Javadiscussion group] 2017-06-23 09:13:26 0  2  1254

java - Construct a non-duplicate List collection, what's wrong with this code?

The function I hope to achieve is to provide an atomic operation for List: if it does not exist, add it. Becau...

From [Javadiscussion group] 2017-06-12 09:25:37 0  2  1253

java - spring scheduled task execution exception

The task was originally executed at 1 am every day from Monday to Friday. After checking the log, I found that...

From [Javadiscussion group] 2017-05-17 10:02:53 0  1  1252

java - SSM framework, when setting up automatic scanning of mapping.xml file in mybatis configuration, an error is reported?

The error message is: Cannot find matching files. Spring XML model validation.

From [Javadiscussion group] 2017-05-17 10:04:42 0  2  1251

java - word如何顯示base64圖片 ？

現(xiàn)在后臺(tái)獲取了一個(gè)base64編碼的圖片，如何顯示在word文檔上面。

From [Javadiscussion group] 2017-04-18 10:54:38 0  1  1250

java-web - Java WEB: What kind of jar package must be placed under WEB-INF? If some packages are placed outside, tomcat will not be able to start.

There are two jar packages commons-fileupload-1.3.2.jar and commons-io-2.5.jar. I initially put these two pack...

From [Javadiscussion group] 2017-05-17 09:58:05 0  5  1249

java - How to get the address bar in velocity?

As the title~~~ I have tried several methods on the Internet but all reported null pointers. The code is as fo...

From [Javadiscussion group] 2017-06-30 09:56:04 0  2  1248

java - bin目錄有什么特殊含義嗎？為什么可執(zhí)行文件都放在bin目錄？

只因?yàn)閎in是binary的縮寫？，可是所有的文件在電腦都是二進(jìn)制的呀

From [Javadiscussion group] 2017-04-18 10:52:37 0  3  1248

java - maven打包的class文件和eclipse編譯出的class文件大小會(huì)出現(xiàn)不一致

文件應(yīng)該是編譯成功了，但是用maven打包出來(lái)的class文件大小和eclipse編譯出的文件大小不一致。打包后的大小 9788 字節(jié)打包前的大小 9800 字節(jié)（eclipse 編譯出的大小） 剛開(kāi)始以為是JDK不一致...

From [Javadiscussion group] 2017-04-17 17:11:02 0  0  1248

java - How can I continue to use this computer when someone else accesses my computer remotely?

It means two people can operate a computer at the same time.

From [Javadiscussion group] 2017-06-23 09:13:37 0  3  1246