java - Can the input parameters of Spring Data Jpa update operation be passed in as objects?

For example, the following code {code...} where id and content are attributes of the object Book. Can I define...

From [Javadiscussion group] 2017-05-17 10:04:29 0  1  752

java - What type of algorithm does the serial collector use? Tag Cleanup Tag cleanup or duplication?

http://book.51cto.com/art/201...

From [Javadiscussion group] 2017-05-17 10:04:21 0  1  750

java - I don't understand the code on line 13. Are sb and str not the same type?

{code...}

From [Javadiscussion group] 2017-05-17 10:04:19 0  2  384

How to crawl js processed code in java

Page address: http://acm.hdu.edu.cn/showpro... Goal of crawling: If you want to crawl the code of these formul...

From [Javadiscussion group] 2017-05-17 10:04:18 0  2  659

java - web application layering understanding

Today I saw the relevant content about application layering in the Alibaba JAVA Development Manual. I would li...

From [Javadiscussion group] 2017-05-17 10:04:17 0  1  723

javascript - WeChat payment: H5 calls up the payment API and directly says that the payment failed

I am using Java to develop the payment function of WeChat's official account. I am using the first step of the...

From [Javadiscussion group] 2017-05-17 10:04:16 0  4  874

java - How to modify mybatis if it exists in the database, and add if it does not exist

I want to implement an insert function. Before inserting, it is judged whether there is the same data as the k...

From [Javadiscussion group] 2017-05-17 10:04:15 0  3  608

java - springboot deployed to tomcat url request path problem

1. Springboot local development, context-path: /hbgj/ home page access /hbgj/v1/index, another post request is...

From [Javadiscussion group] 2017-05-17 10:04:07 0  1  509

java - hibernate forward engineering generates one-to-many relationship model without error, but only one table is generated

I am now going to do forward engineering. The one-to-many relationship between User customers and Order orders...

From [Javadiscussion group] 2017-05-17 10:04:01 0  1  615

java - ReentrantLock和Synchronized

When the competition for resources is not very fierce, the performance of Synchronized is better than that of ...

From [Javadiscussion group] 2017-05-17 10:03:59 0  2  850

javascript - Multiplayer online chess and card games

Developing a multiplayer online chess and card game. How to synchronize player status and hand cards. This is ...

From [Javadiscussion group] 2017-05-17 10:03:58 0  2  936

java - Access denied for user 'root'@'**.**.**.**' (using password: NO)

Directly testing the connection works, but when entering the code, this error will be reported. Here is the er...

From [Javadiscussion group] 2017-05-17 10:03:56 0  1  530

java - Is there any verification annotation to detect duplicate content in the list?

A certain interface requires the caller to pass a list. A certain string attribute in the object in the list c...

From [Javadiscussion group] 2017-05-17 10:03:54 0  2  673

The difference between call by value and call by reference in Java

I'm a little confused about the call by value and call by reference parts in Java. I hope someone with experti...

From [Javadiscussion group] 2017-05-17 10:03:50 0  2  881

java - What is the difference between select and subselect in Hibernate's fetch attribute? Are there any usage scenarios?

As mentioned, thank you for your pointers

From [Javadiscussion group] 2017-05-17 10:03:48 0  1  496