android - Does anyone know what happens when an error occurs when the date is entered after the object of the java backend api interface is passed to the front end? Seek the guidance of the great God

My entity time field is of date type and is also formatted. Why does the front end report an error when enteri...

From [Javadiscussion group] 2017-06-12 09:19:10 0  1  752

Can js detect single file loading progress

Recently, the company has a requirement to display the loading progress of resources when our mobile webpage i...

From [Javadiscussion group] 2017-06-12 09:19:06 0  1  628

javascript - How to restrict the same browser from logging in to two accounts

After user A logs in, user B opens another login page. At this time, A will get B's token. The data is messed ...

From [Javadiscussion group] 2017-05-27 17:41:53 0  4  824

java - Do I need to set childrenID when setting parentID and ID in the database?

I want to traverse a tree recursively, but I feel that using parentID and ID cannot determine whether there ar...

From [Javadiscussion group] 2017-05-27 17:41:52 0  2  697

java - Dubbo interface parameter serialization problem

Problem description: The current project uses dubbo 2.5.3. There is an interface defined as follows: {Code...}...

From [Javadiscussion group] 2017-05-27 17:41:51 0  2  877

java - Mybatis related query

In actual development, Mybatis one-to-many and many-to-many related queries use reultMap reference, javaType r...

From [Javadiscussion group] 2017-05-27 17:41:50 0  1  710

java - Forwarded by f5, tomcat uses https protocol problem

A new project was launched today and I encountered a problem. The company uses f5 forwarding and uses the http...

From [Javadiscussion group] 2017-05-27 17:41:49 0  2  1018

In Java, can System.out.println be used only in method?

{Code...} In the test_1 class, the print statement in the constructor test_1() did not report an error, but th...

From [Javadiscussion group] 2017-05-27 17:41:48 0  1  636

About serialization and deserialization in Java

1. The following code serializes file 2.log and saves it to 2.txt {code...} Deserialization: use ObjectInputSt...

From [Javadiscussion group] 2017-05-27 17:41:47 0  1  974

Java basic switch statement plus {} problem

Why do some books include double quotes here? It can run with or without addition, is there any difference?

From [Javadiscussion group] 2017-05-27 17:41:47 0  2  750

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  903

There is a little doubt about how the servlet filter in Java solves the problem of Chinese garbled characters. Is it necessary to use entrySet traversal here?

The filter code found on the Internet about solving the problem of Chinese garbled characters has a paragraph ...

From [Javadiscussion group] 2017-05-27 17:41:44 0  2  1097

What are the differences in how Java basic types are stored as local variables and member variables?

1. This question may involve many aspects. I did some research myself and understood part of it, but some part...

From [Javadiscussion group] 2017-05-27 17:41:41 0  1  588

java - About string encoding.

{code...} Output: [-106, -85, 78, 22, 63, 78, -32, 58, -86, 77, 16, 81, -86, 81, -46, 4] [-17 , -65, -67, -17,...

From [Javadiscussion group] 2017-05-27 17:41:40 0  1  696

spring - Regarding the problems encountered in keyword query: the problem of writing sql statements into java

I am a database novice. My senior assigned me a keyword query task. I encountered some problems when writing t...

From [Javadiscussion group] 2017-05-27 17:41:38 0  2  890