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java - What is the best way to perform permission verification in a distributed system?

As the title states, in the project, there is a separate system as the permission system. The current approach...

From [Javadiscussion group] 2017-06-30 09:55:01 0  3  1341

java - spring security自定義filter的問(wèn)題

用spring boot建的項(xiàng)目?，F(xiàn)在想自定義一個(gè)filter，要求實(shí)現(xiàn)用戶名，密碼，公司id一起驗(yàn)證。下面是我的代碼，參考UsernamePasswordAuthenticationFilter寫(xiě)的。 {代碼...} ...

From [Javadiscussion group] 2017-04-17 15:31:30 0  4  1341

java - I deleted the svn code locally and re-imported it from the remote repository. It prompted me that it already exists.

(www.sf.gg) is China's leading developer technology community. We hope to provide a pure, high-quality technic...

From [Javadiscussion group] 2017-06-28 09:22:06 0  4  1339

java - How to solve the pressure on scheduled task polling database

There are many scheduled tasks, and they are distributed on different servers. To poll the database for data t...

From [Javadiscussion group] 2017-05-17 10:04:44 0  3  1338

java - 關(guān)于泛型和反射的代碼錯(cuò)誤（cannot select from a type variable）

問(wèn)題1：想寫(xiě)個(gè)requestInfo的toString方法，把所有的成員變量都打印出來(lái)，子類就不用每次都寫(xiě)個(gè)toString方法了，但是父類怎么獲取子類成員變量的值？ {代碼...} 問(wèn)題2下面那個(gè)類P怎么實(shí)例化，也沒(méi)懂...

From [Javadiscussion group] 2017-04-18 10:51:04 0  3  1338

Java中的宗量怎么理解呢？

我在看《Java虛擬機(jī)原理》中有描述宗量：方法的接收者和方法的參數(shù)統(tǒng)稱為方法的宗量。 這個(gè)宗量如何理解呢，【方法的接收者】和【方法的參數(shù)】方法的宗量 【方法的接收者】和【方法的參數(shù)】 這兩個(gè)概念是什么意思呢

From [Javadiscussion group] 2017-04-18 10:50:16 0  0  1338

java - Problem with Spring Boot receiving JSON format parameters.

Current situation: GsonHttpMessageConverter has been customized to complete JSON -> Bean conversion. Like t...

From [Javadiscussion group] 2017-06-23 09:14:33 0  1  1337

java - spring是不是相比其他框架要慢一些？

用springMVC開(kāi)發(fā)了一個(gè)在線考試系統(tǒng)。后臺(tái)用了Spring+SpringMvc，其他還用了SpringSecure。 除了服務(wù)器，其他客戶端載入一個(gè)頁(yè)面，看了下時(shí)間大約在70ms左右，不含載入后用post請(qǐng)求的一堆...

From [Javadiscussion group] 2017-04-18 10:55:40 0  11  1337

javascript - echart How to display only one of the two line charts by default and hide the other?

How can echart display only one of the two line charts by default and hide the other?

From [Javadiscussion group] 2017-05-17 10:06:54 0  3  1336

Some experiences and suggestions on Java

Some experiences and suggestions on Java: If you don’t have a foundation to learn Java, you must follow three ...

From [Javadiscussion group] 2019-12-05 15:41:15 0  0  1329

java - What are the specific business usage scenarios of high-performance classes such as ConcurrentHashMap?

Like the question, what are the specific business usage scenarios of high-performance classes like ConcurrentH...

From [Javadiscussion group] 2017-06-28 09:23:10 0  4  1329

Java執(zhí)行shell腳本，如何知道shell腳本中出現(xiàn)需要用戶手動(dòng)輸入的情況？

Java：ProcessBuilder pb = new ProcessBuilder("./test.sh"); pb.directory(new ...

From [Javadiscussion group] 2016-10-27 09:52:45 0  1  1329

java - Write lock degradation problem in read-write lock

When the write lock is downgraded, the thread that has currently acquired the write lock is required to hold t...

From [Javadiscussion group] 2017-06-12 09:24:17 0  3  1328

java - 運(yùn)行eclipse出現(xiàn)問(wèn)題?

安裝adk之后寫(xiě)的第一個(gè)java程序沒(méi)有問(wèn)題.但是下載eclipse之后運(yùn)行eclipse之后就會(huì)報(bào)錯(cuò),如下:JVM terminated. Exit code=1/usr/bin/java-Dosgi.required...

From [Javadiscussion group] 2017-04-18 10:20:46 0  2  1326

java - Problem with separating verification code from front to back end

Premise: Suppose I have an interface for obtaining verification codes. It is under https://api.b.com/captcha. ...

From [Javadiscussion group] 2017-06-12 09:20:13 0  1  1325