devX | devX 基于spring boot2.0 开发一些系统常用工具集成，jdbc封装，mybatis Mapper4 | Object-Relational Mapping library
kandi X-RAY | devX Summary
kandi X-RAY | devX Summary
devX 基于spring boot2.0 开发一些系统常用工具集成，jdbc封装，mybatis Mapper4,mybatis-plus,集群缓存 Lock等.
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Top functions reviewed by kandi - BETA
- Perform a HTTP request .
- load the entity class info for the class
- Package specific insert parameters
- prejection interceptor
- Add pagination interceptor .
- Get the check code from the sum .
- create access logger info
- Converts the given object to a map
- Get local address
- Executes the shell command .
devX Key Features
devX Examples and Code Snippets
Community Discussions
Trending Discussions on devX
QUESTION
I am trying to encrypt a file. I don't need fancy encrypting, just need to keep wandering eyes off of it. I found a function called szEncryptDecrypt online (https://www.devx.com/tips/Tip/5676) that would be perfect for what I need, as it is simple to use, and obscures the data. However, I can't seem to get it working when reading from a file. Passing a string to it in a macro and decrypting it again works fine, but writing to a file then reading it does not work.
I have a write sub, a read sub and the encryption sub. The read a write sub appear to work correctly if non encrypted data is used (unless there are hidden characters it is getting also).
I tried the trim function on the string before decrypting it, but that did not work.
...ANSWER
Answered 2021-Apr-28 at 06:35Yeah, that encryption function you've found is very simple, but very poor. It does simple XORing with an offset. That means if someone can get you to encrypt a known string and can read the output, they can calculate the key. Also, there's no chaining, so we have no diffusion, repeating patterns in the text will lead to the same output, thus common patterns can be inferred.
I've worked on a complicated approach to encryption myself, using AES-128 in CBC mode. However, the code required is fairly long. It uses the CNG API to do the encryption. Others use .Net, which in turn uses CNG, but can result in shorter code. I prefer not to, since that relies on COM objects and those can be overridden.
Let's start with usage: it's simple. Use EncryptString(StringToEncrypt, Key) to encrypt a string, and DecryptString(StringToDecrypt, Key) to decrypt it again. It uses Base64 encoding to represent the encrypted string, so output should be safe to store in fields that only accept valid unicode strings (also in contrast to the implementation you found).
Then, the fundamentals. AES-128 in CBC mode is a block cipher, so it requires a fixed length key, and also encrypts in full blocks of 128 bits. To work around this, we use SHA1 to reduce our key to a fixed length, and store the length of the input data inside the encrypted string to ignore any padding (additional characters at the end).
Then, in CBC mode, it also requires an initialization vector (IV). We randomly generate that one, and store it without encryption (since we need it to decrypt) at the end of the string. Since we generate the IV randomly, encrypting the same string two times with the same key will result in entirely different encrypted strings, which is often desirable (if you encrypt a password, you don't want someone to be able to check who all have the same password as you).
This code also hashes the data, and stores the encrypted hash with the data. This means it can easily check if your key was valid, and it will not return anything if it was not.
The resulting code is fairly lengthy. It could be reduced by not doing the Base64 encoding in VBA, not using a cryptographically secure random number generator, or using .Net for everything, but that's not desirable imo. I recommend pasting it in a separate module.
QUESTION
How should I design the branches and the pipeline for a basic project on GitHub?
I've seen several designs, but I'm not sure which one fits my project...it's confusing,
Current project:
- 3 Developers and only one WebServer
So I made the following branches:
- Dev1
- Dev2
- Dev3
- PreProd
- Production (Which will be connected to the Web Server)
Pipeline: Each developer push changes to the branch assigned (Dev1, Dev2, Dev3) Next Step:
- Merge from DevX to PreProd
- Merge from PreProd to Production
Every time a developer wants to send a change, should they first clone the PreProd branch on their local machine? ... or the Production branch?... How can I make sure they have reliable data?
...ANSWER
Answered 2021-Jan-24 at 06:33I can share one scenario with you. Usually for any project there exists three branches called:
- Production (Connected with live server)
- QA/Staging (For testing purpose)
- Development (Development main branch)
Ideal scenario is your developers will create their own feature branches say feature-1, feature-2 etc. and create a pull request into the Development branch after finishing their features.
After that, if all features for next release exist in the Development branch, Development branch will send a pull request into the QA/Staging branch. After testing, if all tests passes, then the changes will be merged into Production branch. So the cycle look like:
Features -> Development -> QA/Staging -> Production
QUESTION
I need to send request of json via rest, the code for the client (rest) is Node, and the code of the server is golang.
The body look like following
...ANSWER
Answered 2020-Jun-06 at 22:25The json is not properly escaped within your string representation of it. Especially it's necessary to escape the quotes within the values and to escape backslashes.
That means " => \" or, if already escaped, \" => \\\" and e.g. \n => \\n.
You can assign the json directly to the query. In that case your IDE is usually already complaining, if the json is not valid.
QUESTION
I'm new Terraform and I'm working on an infrastructure setup for deploying Docker Containers. I've based my ECS Cluster off Infrablocks/ECS-Cluster and my Base Networking on Infrablocks/Base-Network. I've opted to use these due to time constraints on the project.
The problem I'm having is that the two EC2 Container Instances that are created by Infrablocks/ECS-Cluster module are not associated with ECS Cluster that Infrablocks builds. I've had zero luck determining why. This is blocking my task definitions from being able to run containers in the ECS Cluster because there are no associated EC2 Instances. I've provided my two dependent module configurations below.
Thank you in advance for any help you can provide!
My Terraform thus far:
...ANSWER
Answered 2020-Apr-22 at 21:05You'd have to troubleshoot the instance to see why it isn't joining the cluster. On your EC2 instances (which, I have not looked, but I would hope that the "infrablocks" ecs-cluster module uses an AMI with the ECS agent installed), you can look in /var/log/ecs/ecs-agent.log .
If the networking configuration is sound, my first guess would be to check the ECS configuration file. If your module is working properly, it should have populated the config with the cluster name. See here for more on that
(I would have commented instead of answered but this account doesn't have enough rep :shrug:)
QUESTION
I,m trying to deploy a backend java app to ibm cloud and i'm getting this error`FAILED Failed to generate the required files. Please try again.
Could not get list of available Starter Kits. Please try again. [Get https://us-south.devx.cloud.ibm.com/appmanager/v1/starters?tag=notDeveloperConsole: dial tcp: lookup us-south.devx.cloud.ibm.com on 127.0.0.53:53: no such host] ` Please note the app is written in kotlin and ktor
...ANSWER
Answered 2020-Apr-21 at 13:59dial tcp: lookup us-south.devx.cloud.ibm.com on 127.0.0.53:53: no such host
Looks like your dns server is not working. Try using different dns server.
Look at this StackOverflow question
QUESTION
I'm trying to parse strig xml using JaxB API.
Below is my code
XML
...ANSWER
Answered 2020-Feb-14 at 12:18Annotations in Employee class refer to XML attributes instead of the elements.
Here is corrected version:
QUESTION
I created a histogram with the following code
...ANSWER
Answered 2019-Dec-19 at 18:38Assuming* you're using PyPlot and your actual code looks something like this:
QUESTION
I am fixing an old application which built on top of Visual Basic 6 code. There is an requirement that adding a statusbar on the bottom of the form. My status bar is as below:
I can show the text correctly but I also want to add a red background color. I found out there is no such option for StatusBar Panel. When I open the property of StatusBar, it shows as below:
I found out I can add picture. But When I added the red color picture, the text will be cover by the picture. I am stuck. Any advice will be helpful. Thanks!!
UPDATE
I simply used the code from the link @Étienne Laneville provided in the comment. The background color added and also the text added.
Here is my code to call the function:
...ANSWER
Answered 2019-Nov-18 at 15:43Here's the code referenced in a comment with some enhancements. One enhancement is a parameter to specify text alignment:
QUESTION
In the depths of the Internet I found the following post:
Swapping two numbers without using a new variable is always a good approach. This helps your application to be memory and performance oriented.
And it proposes to use the following code:
...ANSWER
Answered 2019-Mar-28 at 23:18It's a bunch of baloney; such a tip was only of any value on early computers (which had severe register limitations). On modern computers, that is not an issue. Use the temporary variable (prefer more readable code).
QUESTION
I am working with fairly sensitive information and I am also just a very paranoid person in general. I am using my work computer, but seeing as how I don't work for a company, I don't have any way of safely wiping everything completely whenever I decide to get rid of it. I mean, I can have somebody wipe it for me (I just don't know how secure it is) or just destroy the computer, but outside of that I am not sure what I can do.
So I was thinking about using a Virtual Machine, but I don't understand much about it. For example, I see this article about internet browsing, sandboxing, and an "undo" feature. I realize this is about internet browsing, but the idea of whenever I close the application and it deleting from the VM is appealing. However, I've also read things where you can use VMWare Tools or something like that to recover data that you deleted on the VM.
Is it possible to have the VM delete the data and, at least, make it virtually impossible to recover the data? If not completely, at least make it very unlikely?
...ANSWER
Answered 2018-Dec-11 at 18:54The VM's storage is an abstraction and compartmentalization of the storage on the host machine. You can delete the VM, but recovering its image and therefore its contents is not any harder than using forensic tools to recover regular files on your device. If you're worried about security, use strong passwords and a VPN service. In terms of file destruction, you can simply encrypt your data before "destruction". This way even if someone recovers it, it'll be computationally infeasible * for them to undo the encryption just for the chance to maybe peek at your files.
Computational infeasibility means a computation which although computable would take far too many resources to actually compute. Ideally in cryptography one would like to ensure an infeasible computation’s cost is greater than the reward obtained by computing it.
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
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Install devX
You can use devX like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the devX component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .
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