How to use the application.yml file to configure database password encryption in the SpringBoot project

To use the @SpringBootApplication annotation to start the project, you only need to add the maven dependency

We use this jar package to encrypt and decrypt information:

Write encryption and decryption test class:

package cn.linjk.ehome;
 
import org.jasypt.encryption.pbe.StandardPBEStringEncryptor;
import org.jasypt.encryption.pbe.config.EnvironmentPBEConfig;
import org.junit.Test;
 
public class JasyptTest {
  @Test
  public void testEncrypt() throws Exception {
    StandardPBEStringEncryptor standardPBEStringEncryptor = new StandardPBEStringEncryptor();
    EnvironmentPBEConfig config = new EnvironmentPBEConfig();
 
    config.setAlgorithm("PBEWithMD5AndDES");     // 加密的算法，这个算法是默认的
    config.setPassword("test");            // 加密的密钥
    standardPBEStringEncryptor.setConfig(config);
    String plainText = "88888888";
    String encryptedText = standardPBEStringEncryptor.encrypt(plainText);
    System.out.println(encryptedText);
  }
 
  @Test
  public void testDe() throws Exception {
    StandardPBEStringEncryptor standardPBEStringEncryptor = new StandardPBEStringEncryptor();
    EnvironmentPBEConfig config = new EnvironmentPBEConfig();
 
    config.setAlgorithm("PBEWithMD5AndDES");
    config.setPassword("test");
    standardPBEStringEncryptor.setConfig(config);
    String encryptedText = "ip10XNIEfAMTGQLdqt87XnLRsshu0rf0";
    String plainText = standardPBEStringEncryptor.decrypt(encryptedText);
    System.out.println(plainText);
  }
}

We got the encryption string, now let’s modify the configuration of application.yml:

Let’s encrypt Just put the string in ENC ({encrypted string}).

You need to configure the secret key during startup

Add the secret key to the startup parameters

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