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javascript - Urgent, my host IP is bound to someone else's domain name, how to solve it? ?

My host IP is bound by someone else's IP. How to solve it? ? What should you do?

From [Javadiscussion group] 2017-06-12 09:24:58 0  3  1043

java - spring-boot在@ResponseBody返回json時(shí)的時(shí)間處理

在application.properties增加 {代碼...} 但是并沒有生效，返回的時(shí)間依然是long型的時(shí)間戳。并且我是想把這里的dataFormat改成動(dòng)態(tài)的，但是加了以后一直在報(bào)錯(cuò)。我先把我的代碼貼一下，看看...

From [Javadiscussion group] 2017-04-18 09:53:07 0  3  1043

java子類和父類屬性重復(fù)問題

java 子類繼承 父類， 但子類中 包含和父類相同 屬性 ,給子類賦值之后，父類的相同的屬性值還是空的。類定義如下： {代碼...} debug看到 父類（Person）的name屬性值是null，繼承的方法是子類會(huì)覆...

From [Javadiscussion group] 2017-04-18 09:03:21 0  8  1043

java - 重寫HttpServlet的doGet、doPost方法時(shí)為什么要把它們的訪問權(quán)限設(shè)為public?

看一本Java Web入門書時(shí)，其中提到HttpServlet的doGet方法是protected的，我們重寫doGet方法時(shí)，為了使其能被Servlet容器訪問，應(yīng)該把訪問權(quán)限設(shè)為public，然后我看網(wǎng)上的例子也全是...

From [Javadiscussion group] 2017-04-18 10:52:23 0  2  1042

How to use Java exec to execute a command with redirection on a windows machine.

{Code...} How to use java's exec execution, the discovery file with redirection is not generated.

From [Javadiscussion group] 2017-07-03 11:43:37 0  1  1041

java - 使用MyBatis能否動(dòng)態(tài)修改數(shù)據(jù)庫連接的密碼

在使用Mybatis和Spring進(jìn)行數(shù)據(jù)庫操作時(shí)，我們通常將數(shù)據(jù)庫連接的信息(url、用戶名、密碼等)配置到j(luò)dbc.properties里面。通過Spring加載這些信息，建立數(shù)據(jù)源。Mybatis的mapper使用...

From [Javadiscussion group] 2017-04-17 17:20:48 0  1  1041

Windows - Help with Java high-precision operation problems

The company's projects required a lot of high-precision operations. At first, we used double-type operations. ...

From [Javadiscussion group] 2017-06-28 09:22:10 0  3  1040

7-24 Why can the constructor be directly in the class and output directly to the console?

class Student() {public Student (){System.out.println("This is the constructor")}} class ConstructDe...

From [Javadiscussion group] 2022-09-21 11:30:56 0  1  1038

There seems to be an error in this article. I wrote the following code, which can be converted into trinocular

public class IfDemo2 { ????public static void main(String[] agrs) {?????int x=100; //使用IF演示?????????if(x%2==0

From [Javadiscussion group] 2021-12-28 20:30:00 0  1  1038

java - inputstream流讀到最后為什么沒有返回 -1 ?

{代碼...} 為什么該流讀完的時(shí)候并沒有返回-1，而是返回0，導(dǎo)致無限循環(huán).(上傳文檔類型文件不會(huì)，字節(jié)文件就會(huì)發(fā)生這種情況)

From [Javadiscussion group] 2017-04-18 10:52:57 0  1  1038

java - mybatis中如何寫mysql的union all 查詢？

用mybatis如何寫下邊的sql？ {代碼...}

From [Javadiscussion group] 2017-04-18 10:32:02 0  2  1038

Java中JdbcTemplate 特殊字符轉(zhuǎn)義問題

有個(gè)模糊查詢 {代碼...} {代碼...} 上面的寫法不對，請問如何做轉(zhuǎn)義？

From [Javadiscussion group] 2017-04-18 10:27:15 0  2  1038

java - 注解注入和依賴注入是怎么一回事？

最近開始試著做web項(xiàng)目，從別人的代碼看到了漫天的注解。真的很難懂。然后硬著頭皮各種補(bǔ)知識(shí)。大概了解到Spring的ioc思想，通過控制反轉(zhuǎn)，使程序變得解耦。它好像是通過xml來配置具體的bean實(shí)現(xiàn)在使用的時(shí)候具體.....

From [Javadiscussion group] 2017-04-17 17:51:29 0  4  1038

.gitignore下面制定了*.pyc但是無效？

我在git的根目錄下面新建了一個(gè).gitignore文件，然后添加了以下的內(nèi)容# Byte-compiled / optimized / DLL files _...

From [Javadiscussion group] 2016-11-08 12:36:15 0  1  1038

Spring transaction rollback issue

Spring things, inject things in the service layer, perform two insert operations, do you need to throw an exce...

From [Javadiscussion group] 2017-06-12 09:24:47 0  4  1037