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目录

1.引入相关的依赖

2.nacos的yaml的相关配置，配置密码和相关算法

3.配置数据源连接

        3.1 数据库连接配置

4.连接数据库配置类详解（DataSourceConfig）。

5.完整的配置类代码如下

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1.引入相关的依赖

<dependency><groupId>com.github.ulisesbocchio</groupId><artifactId>jasypt-spring-boot-starter</artifactId><version>3.0.3</version></dependency>

2.nacos的yaml的相关配置，配置密码和相关算法

jasypt:encryptor:algorithm: PBEWithHmacSHA512AndAES_256password: encryptionkey

3.配置数据源连接

        3.1 数据库连接配置

                    使用@ConfigurationProperties(prefix = "spring.datasource")注解的dataSource()方法通过DataSourceBuilder.create().build();创建了一个DataSource的bean。这个bean的配置信息来自于application.properties或application.yml文件中的spring.datasource前缀下的配置项，比如数据库URL、用户名、密码等。

                 重点: 密码在yaml是加密的,如：ENC(N8VBWG5nOHvy5efX3/mlPAmdBykE7iDZFl362LyeaPRXMbLT0PzEIlB/KDXrNYz6)，配置了jasypt之后，使用password作为密钥进行加密解密。

#加密
jasypt:encryptor:algorithm: PBEWithHmacSHA512AndAES_256password: encryptionkey
spring:        datasource:driver-class-name: com.mysql.cj.jdbc.Driverjdbc-url: jdbc:mysql://localhost:3306/auth?serverTimezone=Asia/Shanghai&useUnicode=true&characterEncoding=utf-8&allowMultiQueries=true&nullCatalogMeansCurrent=trueusername: rootpassword: ENC(N8VBWG5nOHvy5efX3/mlPAmdBykE7iDZFl362LyeaPRXMbLT0PzEIlB/KDXrNYz6)type: com.alibaba.druid.pool.DruidDataSourcedruid:initial-size: 5min-idle: 1max-active: 10max-wait: 60000validation-query: SELECT 1 FROM DUALtest-on-borrow: falsetest-on-return: falsetest-while-idle: truetime-between-eviction-runs-millis: 60000redis:port: 6379
mysql:driver: com.mysql.jdbc.driver

4.连接数据库配置类详解（DataSourceConfig）。

        通过配置类的方式，实现数据库的连接，构建StringEncryptor 的bean对象，实现密码的加密解密，把加密解密串放到配置文件中，用ENC()包裹着，加载配置文件的时候，有ENC()就会自动解密，这样避免配置文件密码泄露的风险。

 @Beanpublic StringEncryptor stringEncryptor() {PooledPBEStringEncryptor encryptor = new PooledPBEStringEncryptor();SimpleStringPBEConfig config = new SimpleStringPBEConfig();config.setPassword("encryptionkey"); // 加密密钥config.setAlgorithm("PBEWithHmacSHA512AndAES_256");config.setKeyObtentionIterations("1000");config.setPoolSize("1");config.setProviderName("SunJCE");config.setSaltGeneratorClassName("org.jasypt.salt.RandomSaltGenerator");config.setStringOutputType("base64");encryptor.setConfig(config);return encryptor;}

5.完整的配置类代码如下

package com.example.auth.config;import com.baomidou.mybatisplus.extension.plugins.MybatisPlusInterceptor;
import com.baomidou.mybatisplus.extension.plugins.inner.OptimisticLockerInnerInterceptor;
import com.baomidou.mybatisplus.extension.plugins.inner.PaginationInnerInterceptor;
import com.baomidou.mybatisplus.extension.spring.MybatisSqlSessionFactoryBean;
import org.apache.ibatis.session.SqlSessionFactory;
import org.jasypt.encryption.StringEncryptor;
import org.jasypt.encryption.pbe.PooledPBEStringEncryptor;
import org.jasypt.encryption.pbe.config.SimpleStringPBEConfig;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.boot.jdbc.DataSourceBuilder;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;import javax.annotation.PostConstruct;
import javax.sql.DataSource;/*** MybatisPlus配置类 数据库连接*/
@Configuration
@MapperScan(basePackages = "com.example.auth.mapper")
public class DataSourceConfig {@Autowiredprivate StringEncryptor stringEncryptor;@ConfigurationProperties(prefix = "spring.datasource")@Beanpublic DataSource dataSource() {return DataSourceBuilder.create().build();}@Beanpublic MybatisPlusInterceptor mybatisPlusInterceptor() {MybatisPlusInterceptor interceptor = new MybatisPlusInterceptor();//分页插件interceptor.addInnerInterceptor(new PaginationInnerInterceptor());//注册乐观锁插件interceptor.addInnerInterceptor(new OptimisticLockerInnerInterceptor());return interceptor;}@Beanpublic SqlSessionFactory sqlSessionFactory(DataSource dataSource, MybatisPlusInterceptor interceptor) throws Exception {MybatisSqlSessionFactoryBean ssfb = new MybatisSqlSessionFactoryBean();ssfb.setDataSource(dataSource);ssfb.setPlugins(interceptor);//到哪里找xml文件ssfb.setMapperLocations(new PathMatchingResourcePatternResolver().getResources("classpath:/mapper/*Mapper.xml"));return ssfb.getObject();}@Beanpublic StringEncryptor stringEncryptor() {PooledPBEStringEncryptor encryptor = new PooledPBEStringEncryptor();SimpleStringPBEConfig config = new SimpleStringPBEConfig();config.setPassword("encryptionkey"); // 加密密钥config.setAlgorithm("PBEWithHmacSHA512AndAES_256");config.setKeyObtentionIterations("1000");config.setPoolSize("1");config.setProviderName("SunJCE");config.setSaltGeneratorClassName("org.jasypt.salt.RandomSaltGenerator");config.setStringOutputType("base64");encryptor.setConfig(config);return encryptor;}@PostConstructpublic void init(){/* String  enStr  = stringEncryptor.encrypt("Root@123");String  deSTr  = stringEncryptor.decrypt("N8VBWG5nOHvy5efX3/mlPAmdBykE7iDZFl362LyeaPRXMbLT0PzEIlB/KDXrNYz6");System.out.println("enStr==="+enStr);System.out.println("deSTr==="+deSTr);*/}}

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