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Most people do not quite understand the knowledge points of this article "configuration file encrypts database configuration information why Spring Boot can still connect to the database", so the editor summarizes the following contents for you. The content is detailed, the steps are clear, and it has a certain reference value. I hope you can get something after reading this article. Let's take a look at this article entitled "the configuration file encrypts the database configuration information why Spring Boot can still connect to the database".

The biggest feature of Spring Boot is automatic configuration, which greatly reduces the tedious configuration of the traditional Spring framework, and other components can be accessed through a few lines of simple configuration. For example, if you want to connect to the mysql database, you only need to add some configuration information of mysql to the configuration file. In order to protect the security of data, more and more companies choose to encrypt these important information. Next, let's take a look at how to configure encrypted files and successfully connect to the database.

There are several ways to configure information encryption, here I will only write in detail one of the more commonly used ones. First, the user name and password are encrypted by some encryption algorithm, and then the encrypted string is used to replace the original plaintext in the configuration file. Then customize the data source and decrypt the user name and password in the custom data source.

SpringBoot automatic assembly

The automatic assembly of Spring Boot has been discussed in detail in previous tweets. Let's briefly review it today. On the startup class of each SpringBoot application, you can find an annotation @ SpringBootApplication, which contains an annotation @ EnableAutoConfiguration that is used to automate assembly. This annotation imports the class AutoConfigurationImportSelector, in which there is a method selectImports that scans all the META-INF/spring.factories files in the jar package to load the specific implementation classes and complete the automatic assembly.

A class is specified in the META-INF/spring.factories file of the spring-boot-autoconfigurejar package to load the database configuration information. This class is called org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration.

Custom data source

Here, HikariDataSource is used as the custom data source, which is designed to decrypt the configuration information in the configuration file.

@ Configurationpublic class DataSourceConfiguration {@ Autowired DataSourceProperties properties; @ Bean public DataSource dataSource () throws Exception {String username = Des3.decryptThreeDESECB (properties.getUsername (), Des3.DES3KEY); String password = Des3.decryptThreeDESECB (properties.getPassword (), Des3.DES3KEY); HikariDataSource dataSource = new HikariDataSource (); dataSource.setDriverClassName (properties.getDriverClassName ()); dataSource.setJdbcUrl (properties.getUrl ()); dataSource.setUsername (username) DataSource.setPassword (password); return dataSource;}}

The profile information is as follows:

Spring: datasource: driver-class-name: com.mysql.cj.jdbc.Driver url: jdbc:mysql://localhost:3306/xxx username: aMkeRCLWqNw= password: rq-fzucH32I=

The specific encryption and decryption algorithm is not mentioned here, according to the specific requirements to choose a reversible encryption algorithm.

The above is about the content of this article about "the configuration file encrypts the database configuration information why Spring Boot can still connect to the database". I believe we all have some understanding. I hope the content shared by the editor will be helpful to you. If you want to know more about the relevant knowledge, please follow the industry information channel.

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