java - Questions about the content of the input box

<input type="submit" value="123456">text-align This attribute can only cente...

From [Javadiscussion group] 2017-05-17 10:02:41 0  1  588

java - How to implement username or email login in the same input box?

As shown in the two pictures, the user table has username and email fields. When the page is logged in, how to...

From [Javadiscussion group] 2017-05-17 10:02:39 0  3  719

java - Error reported when using IDEA to build SSM framework unit test

I hope my brothers and sisters can help me.

From [Javadiscussion group] 2017-05-17 10:02:37 0  1  466

java - Error in converting Word to PDF using docx4j3.2. Been struggling for a day. Please give me some advice! ! ! !

OutputStream os = new java.io.FileOutputStream(outputfilepath); Docx4J.toFO(foSettings, os, Docx4J.FLAG_EXPORT...

From [Javadiscussion group] 2017-05-17 10:02:34 0  1  720

java - Due to the long query sql, the Socket was closed. How to solve the problem without changing the sql?

Caused by: org.postgresql.util.PSQLException: An I/O error occurred while sending to the backend. {代码...} Caus...

From [Javadiscussion group] 2017-05-17 10:02:28 0  1  1332

java - For example, when writing a Service or Dao in Spring MVC, is it best to write an interface implementation?

I have seen many examples of writing a UserService and then writing an interface implementation such as UserSe...

From [Javadiscussion group] 2017-05-17 10:02:21 0  1  536

What happens during HTTP form submission?

I developed a simple HTTP server myself, but it gets stuck every time the form is submitted. . Can anyone help...

From [Javadiscussion group] 2017-05-17 10:02:18 0  2  571

apache-tomcat-9.0.0.M20 java.lang.VerifyError: Bad return type

{Code...} When using Tomcat9.0 in eclipse, an exception will be reported. If you run the startup directly, the...

From [Javadiscussion group] 2017-05-17 10:02:15 0  1  963

java - Questions about While,break

May I ask why once the while loop of this code enters the back part of else, the subsequent while loop can no ...

From [Javadiscussion group] 2017-05-17 10:02:00 0  2  629

Web crawler - Java crawler has obtained the image link but cannot download the image

The code of the corresponding image resource src obtained by the crawler in HTML is as follows. But when the r...

From [Javadiscussion group] 2017-05-17 10:01:58 0  2  600

java - Questions about multi-threaded notify

{Code...} Logically speaking, t1.wait() should block the main thread. There is no other place to notify and af...

From [Javadiscussion group] 2017-05-17 10:01:54 0  1  637

java - What is enum? Why is it there? How to use it?

In actual phenomena, I can basically use enum, but I want to trace the source (discuss the essence). In the ex...

From [Javadiscussion group] 2017-05-17 10:01:51 0  7  715

Does IDEA support incremental compilation?

The web project must be recompiled and deployed every time, which greatly affects efficiency.

From [Javadiscussion group] 2017-05-17 10:01:44 0  5  1106

java - jenkins deploys the war package to tomcat and fails to decompress and start it.

The project is built and packaged in Jenkins, and then deployed to Tomcat for decompression and operation. If ...

From [Javadiscussion group] 2017-05-17 10:01:38 0  2  1058

java - How to use POI to prohibit users from adding sheets in EXCEL

The EXCEL generated by POI can add sheets. How to disable this function? In addition, how to use POI to only a...

From [Javadiscussion group] 2017-05-17 10:01:18 0  1  793