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Using YUI-Compressor Maven Plugin for Spring Boot Web Applications

by Han Bo Sun

YUI-Compressor maven plugin to minify JS files for Spring Boot based web app development

An In-Depth Tutorial on Lucene and Java

by Han Bo Sun

This is a more in-depth tutorial on integrating Lucene search and index engine in Java applications.

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An In-Depth Tutorial on Lucene and Java

by Han Bo Sun

This is a more in-depth tutorial on integrating Lucene search and index engine in Java applications.

Using YUI-Compressor Maven Plugin for Spring Boot Web Applications

by Han Bo Sun

YUI-Compressor maven plugin to minify JS files for Spring Boot based web app development

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SpringMVC

How can I loop and compare the data present between two arrays in spring boot

10 Mar 2024 by Pete O'Hanlon

As I don't know what Order looks like, I'm going to make some assumptions in this answer. The big assumption I'm going to make is that you have an Integer id value in the class, which I can get using getId();. I'm also going to assume that the...

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Using YUI-Compressor Maven Plugin for Spring Boot Web Applications

3 Aug 2022 by Han Bo Sun

YUI-Compressor maven plugin to minify JS files for Spring Boot based web app development

Could not locate appropriate constructor on class

1 Sep 2022 by Richard MacCutchan

Your constructor is: public JobRecruiter(int id, String jobTitle, String recruiterName) So any code that instantiates a JobRecruiter object must pass three parameters. The only lines I can find where it makes such a call are JobRecruiter...

Spring mongo criteria querying data which are present and not present in database

16 Jan 2023 by Andre Oosthuizen

You are adding a new client twice, at the start of your code and then again within another if else statement. I am not familiar with the code used ?-Java/MongoDb -? but the basics is the same How it works - 1. Search data table for client with...

Fetching large volume of data from postgres db using spring boot rest api

4 Jul 2023 by Richard Deeming

Quote: I just want to count the results I can't return such data to the user there is no means I can count these values depending on these conditions provided Your code is loading all 4 million matching records into a list, simply to return...

How to track changes made in data tables between two access database files

26 Oct 2023 by Gerry Schmitz

Add a "timestamp" to the Access records; and use a new timestamp when you update and insert. You can't "delete" initially; you'll need to add a "delete" flag (and timestamp) so you can export "deleted" records; and purge / archive them later. You...

An In-Depth Tutorial on Lucene and Java

8 Mar 2024 by Han Bo Sun

This is a more in-depth tutorial on integrating Lucene search and index engine in Java applications.

Could not locate appropriate constructor on class

1 Sep 2022 by Auto Samachar

Could not locate appropriate constructor on class : com.recruit.api.model.JobRecruiter; nested exception is java.lang.IllegalArgumentException: Could not locate appropriate constructor on class : com.recruit.api.model.JobRecruiter/500 I added...

Spring mongo criteria querying data which are present and not present in database

16 Jan 2023 by Office Systems

I want to query all data which are present in my database by comparing with while loop data and if this data is available I want to update it and if not I want to insert it as a new record into the database. The problem is I'm only getting data...

How to enable batch inserts in spring boot with mongo database

10 Feb 2023 by Office Systems

I'm having a spring boot application connected with Mongo DB now I want to enable spring batch how can I manage this withi spring data Mongo What I saw with Spring data JPA spring.jpa.properties.hibernate.generate_statistics=true...

How to compare month in spring mongo criteria of a column attribute

13 Mar 2023 by Office Systems

How can I compare month in spring mongo criteria with a hard corded value, month in criteria is in a spring format and the value is present in an integer format. This is what i have so far i just want to check for that month and group employee...

How to compare month in spring mongo criteria of a column attribute

13 Mar 2023 by Dave Kreskowiak

Think about your query. What does ".is(2)" mean? Is it the month number? The day of the month? How about the yes? Maybe the hour, minutes, or seconds? How is your code telling the database that the 2 is a month? Hint: It's not.

How to read mdb file results using item reader in spring batch

29 Mar 2023 by Office Systems

I want to read mdb file using spring batch Item Reader, I have managed to read the mdb file and the results I can see them in console but I'm not able to map this results into the reader object. Below is my sample code. What I have tried: ...

How to upload file direct to folder in a server without loading it to memory in spring boot

19 Apr 2023 by Office Systems

I want to upload large file more than 2gb to a particular folder in spring boot, the challenge I'm facing is that, after file upload from client application (Angular Application/ Postman) it takes more than 50seconds to hit the controller, after...

How to get values which do not exist in databse by comparing with the list values in spring boot

7 May 2023 by Office Systems

I am having a spring boot application which reads values from the Microsoft access file and then checks if the value exists in the database then gets updated or else inserted as the new record however I'm only getting these values present in the...

How to track changes made in data tables between two access database files

27 Oct 2023 by Office Systems

I'm fetching data from Microsoft access database file into PostgreSQL Database, then later some changes are added into Microsoft access database file and then re-uploaded into PostgreSQL Database as the latest dataset file with changes, now the...

Implementing data upload and read microservices project

17 Jan 2024 by Office Systems

I'm new to Micro-services architecture, I'm to develop a project using spring boot that gets data from API and stores that data into PostgreSQL db then computes and gets the sum of the data uploaded and sends that data into another database...

How can I loop and compare the data present between two arrays in spring boot

10 Mar 2024 by Office Systems

I have two arrays which both have data, what I want to do is to loop through each array and compare the data between the arrays one array is coming from the Post Method and another array has data from the database, so the comparison has to be...

Deleting large volume of data at once in spring boot in fraction of a second

26 Apr 2023 by Office Systems

How can I delete large amount of data more than 10 million records in fraction of a second in spring boot project, the code I'm having right now takes more than 1 minute and 30s to delete these records. Below is the code I'm using to delete these...

Unknown column 'vms_contact_email' in 'field list'

21 Sep 2022 by Auto Samachar

I have vmscontactemail field in the database and models, when I debug the code it shows the above error when I execute that line at managerdetailsrepository.save What I have tried: DAO @Modifying @Transactional @Query("UPDATE...

Fetching large volume of data from postgres db using spring boot rest api

4 Jul 2023 by Office Systems

I'm trying to fetch data using Spring Boot for my REST API from PostgreSQL Database, I have more than 30 million records in my database, the API takes a lot of time to pull data from the database and sometimes it results on time out error when...