https://github.com/sandysanthosh/spring-boot-api
https://github.com/sandysanthosh/spring-boot-api
Last synced: 3 months ago
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- Host: GitHub
- URL: https://github.com/sandysanthosh/spring-boot-api
- Owner: sandysanthosh
- License: apache-2.0
- Created: 2023-02-24T17:25:15.000Z (almost 3 years ago)
- Default Branch: main
- Last Pushed: 2023-02-24T21:24:28.000Z (almost 3 years ago)
- Last Synced: 2025-02-28T20:57:21.673Z (11 months ago)
- Size: 8.79 KB
- Stars: 0
- Watchers: 2
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# Spring-BOOT-API
#### In Spring Boot, you can convert a List to an ResponseEntity using the ResponseEntity class. Here's an example of how you can do it:
```
@GetMapping("/users")
public ResponseEntity> getAllUsers() {
List userList = userService.getAllUsers();
if(userList.isEmpty()) {
return new ResponseEntity<>(HttpStatus.NO_CONTENT);
}
return new ResponseEntity<>(userList, HttpStatus.OK);
}
```
#### Using Spring Security's Encryption Support: Spring Security provides an encryption API that can be used for encrypting and decrypting data. You can use this API to encrypt sensitive data such as passwords, credit card numbers, etc. You can configure the encryption algorithm and key used for encryption in the application.properties file. Here's an example of encrypting and decrypting data using Spring Security:
```
String data = "My sensitive data";
String password = "mySecretPassword";
TextEncryptor encryptor = Encryptors.text(password, "8080808080808080");
String encryptedData = encryptor.encrypt(data);
String decryptedData = encryptor.decrypt(encryptedData);
```
#### Using Jasypt: Jasypt is a Java library that provides basic encryption and decryption utilities for encrypting sensitive data. To use Jasypt in your Spring Boot application, you need to add the Jasypt dependency to your pom.xml file. Here's an example of encrypting and decrypting data using Jasypt:
```
String data = "My sensitive data";
String password = "mySecretPassword";
StandardPBEStringEncryptor encryptor = new StandardPBEStringEncryptor();
encryptor.setPassword(password);
String encryptedData = encryptor.encrypt(data);
String decryptedData = encryptor.decrypt(encryptedData);
```
#encrypt
```
import java.security.Security;
import java.io.*;
import java.util.*;
import javax.crypto.Cipher;
import javax.crypto.KeyGenerator;
import javax.crypto.SecretKey;
public class Encryption
{
private static Cipher cipher = null;
public static void main(String[] args) throws Exception
{
Scanner s=new Scanner(System.in);
KeyGenerator keyGenerator = KeyGenerator.getInstance("DESede");
keyGenerator.init(168);
SecretKey secretKey = keyGenerator.generateKey();
cipher = Cipher.getInstance("DESede");
System.out.println("\nEnter the text to be Encrypted...");
String s1 = s.nextLine();
System.out.println("Plain Text Before Encryption: " + s1);
byte[] plainTextByte = s1.getBytes("UTF8");
byte[] encryptedBytes = encrypt(plainTextByte, secretKey);
String encryptedText = new String(encryptedBytes, "UTF8");
System.out.println("Encrypted Text After Encryption: " + encryptedText);
byte[] decryptedBytes = decrypt(encryptedBytes, secretKey);
String decryptedText = new String(decryptedBytes, "UTF8");
System.out.println("Decrypted Text After Decryption: " + decryptedText);
}
static byte[] encrypt(byte[] plainTextByte, SecretKey secretKey)throws Exception
{
cipher.init(Cipher.ENCRYPT_MODE, secretKey);
byte[] encryptedBytes = cipher.doFinal(plainTextByte);
return encryptedBytes;
}
static byte[] decrypt(byte[] encryptedBytes, SecretKey secretKey)throws Exception
{
cipher.init(Cipher.DECRYPT_MODE, secretKey);
byte[] decryptedBytes = cipher.doFinal(encryptedBytes);
return decryptedBytes;
}
}
```