1.执行命令加密数据库密码

在命令行中执行如下命令：

java -cp druid-1.1.16.jar com.alibaba.druid.filter.config.ConfigTools zhangjianshan

输出

privateKey:MIIBVAIBADANBgkqhkiG9w0BAQEFAASCAT4wggE6AgEAAkEAmljICtRKO+B9B0dPxoZTeEW4UJZrhhZQDwn/LvWOMNuqAImBjEwz6ucrRCKkUX4yltOgrCNS30g+nPDEaThkZQIDAQABAkAuZK9EagkiNFkAfhPhlXCzfylmt7/8HurTimq0v8SMtJKsWk3zKam2bsUX4BiOjIaWG6dp0Vf7QG5x2AbtU8khAiEAzyKh8IAdDOD3vsrRTipc/VfnMz4ulIsgFQgq8msRJd0CIQC+wiIe6hAU6KJhCtpRPsEujs3k4PhYiiKasO2TpftkKQIgHhN9SBqSHUidMIrqkVr9XZvh6kLhKJh69BLXiZOaTdECIQC3/y1GQGLOqC2oCP3YC/3uWJRExrMFRAhoyWv/VMSNMQIgPmtQedvWiF5MQkU8AOl2c5iaRKank0yHdLYtV1QFfj0=

publicKey:MFwwDQYJKoZIhvcNAQEBBQADSwAwSAJBAJpYyArUSjvgfQdHT8aGU3hFuFCWa4YWUA8J/y71jjDbqgCJgYxMM+rnK0QipFF+MpbToKwjUt9IPpzwxGk4ZGUCAwEAAQ==

password:SlfITHjqaGF4yczeNem9qWQdgCmvvuobC4qC3Yr9BpfC27jeCoyK1LPoguUeD7CmMyKEpHEqyHxDMDVCBrQhLA==

2.修改项目.properties 或者.yml配置

spring.datasource.username=root

# 加密后的密码（原密码 zhangjianshan）

spring.datasource.password=SlfITHjqaGF4yczeNem9qWQdgCmvvuobC4qC3Yr9BpfC27jeCoyK1LPoguUeD7CmMyKEpHEqyHxDMDVCBrQhLA==

spring.datasource.driver-class-name=com.mysql.jdbc.Driver

# 公钥

publickey=MFwwDQYJKoZIhvcNAQEBBQADSwAwSAJBAJpYyArUSjvgfQdHT8aGU3hFuFCWa4YWUA8J/y71jjDbqgCJgYxMM+rnK0QipFF+MpbToKwjUt9IPpzwxGk4ZGUCAwEAAQ==

# 配置 connection-properties，启用加密，配置公钥。

spring.datasource.druid.connection-properties=config.decrypt=true;config.decrypt.key=${publickey}

# 启动ConfigFilter

spring.datasource.druid.filter.config.enabled=true