springboot整合Druid加密 及连接错误处理

1. 首先我们使用Druid包的自带密码加密工具对我们的密码进行加密

   如下所示，我们可以得到私钥、公钥和密码密文：

   C:UsersAdministrator>cd /d C:UsersAdministrator.m2 epositorycomalibabadruid1.1.6

   C:UsersAdministrator.m2 epositorycomalibabadruid1.1.6>java  -cp druid-1.1.6.jar com.alibaba.druid.filter.config.ConfigTools password

   privateKey:MIIBVAIBADANBgkqhkiG9w0BAQEFAASCAT4wggE6AgEAAkEAlwfk3zil6HQGe8QFz9UbttPds8k/JgEm6/feCl4cCmFW1DP7PKD2/TLFZCoeFFRhC1hqOEBhpadrR013huuFTQIDAQABAkAr4Cg2TP+twx8rD2xcz11IxM3wb/N/d/A1twFzY5mjzeXihuoZrefje1WN2q36YhAiEA5GgcdSV0qwYxAkUS24tgFp1EPlTmNKAa2YRWYUNUJkCIQCpRsuO9PrEVf8morsx5VousmyapnoOtW5Y7663zp7m1QIgb8sZaqkbkn3kTPUcBsMQE+GDvnJ1fnqCyrneQg+idbkCIGmzXkqPKMNOm7upY9C9UXnVSkGrcI4ctqHsUKJP8CNdAiEAnr2gYIT1EO3dPVpTyguKCxpawMnhQ/biwDUyzYb5mAw=

   publicKey:MFwwDQYJKoZIhvcNAQEBBQADSwAwSAJBAJcH5N84peh0BnvEBc/VG7bT3bPJPyYBJuv33gpeHAphVtQz+zyg9v0yxWQqHhRUYQtYajhAYaWna0dNd4brhU0CAwEAAQ==

   password:gXhFklHpK8L6Z39gjA0lFccC7zHREii6FLXtW43h8yqH+47Hbat6URMhX6R3X4qMunhpxfWlisoZXqnFLlbEcw==

   
2. 2

   在Spring boot的配置文件中配置密码和config filter.

   spring.datasource.type=com.alibaba.druid.pool.DruidDataSource

   spring.datasource.url=jdbc:mysql://127.0.0.1:3306/videoDB

   spring.datasource.username=root

   spring.datasource.password=password

   spring.datasource.filters=stat,log4j,wall,config

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

   spring.datasource.maxActive=20

   spring.datasource.max-idle=10

   spring.datasource.max-wait=10000

   spring.datasource.min-idle=5

   spring.datasource.initial-size=5

   
3. 3

   配置数据源的用户密码以及解密的配置选项，password和connectionProperties属性：

   spring.datasource.type=com.alibaba.druid.pool.DruidDataSource

   spring.datasource.url=jdbc:mysql://127.0.0.1:3306/videoDB

   spring.datasource.username=root

   spring.datasource.password=gXhFklHpK8L6Z39gjA0lFccC7zHREii6FLXtW43h8yqH+47Hbat6URMhX6R3X4qMunhpxfWlisoZXqnFLlbEcw==

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

   spring.datasource.filters=stat,log4j,wall,config

   spring.datasource.connectionProperties=config.decrypt=true;config.decrypt.key=MFwwDQYJKoZIhvcNAQEBBQADSwAwSAJBAJcH5N84peh0BnvEBc/VG7bT3bPJPyYBJuv33gpeHAphVtQz+zyg9v0yxWQqHhRUYQtYajhAYaWna0dNd4brhU0CAwEAAQ==

   
4. 4

   启动Spring boot应用进行测试

   1）启动Application

   2）测试有数据库连接服务的操作，如视频文件的上传

   这时候可以测试可以知道数据库信息入库失败，日志提示数据库连接失败：

   2018-01-17 15:10:20.481 ERROR 1144 --- [Create-15674126] com.alibaba.druid.pool.DruidDataSource   : create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/videoDB, errorCode 1045, state 28000

   java.sql.SQLException: Access denied for user 'root'@'localhost' (using password: YES)

   3）说明我们配置的解密过滤器没有生效，这也说明了根据Spring Boot+Druid是存在兼容性问题的，因为官方的样例是使用Spring+Druid的模式

   
5. 5

   最后得到的结论是：Druid与Spring Boot的兼容性问题还是比较多的，不建议使用该组合。

   从项目提交的问题来看，也体现出与Spring Boot的兼容性问题，具体问题如下图所示。

   
6. 6

   最后这里提供过一种方法解决该问题，就是自定义DataSource配置文件解析类，初始化Druid的数据源，让其支持加密后的密文：

   1）创建一个配置文件读初始化类 DataSourceConfig

   该类主要完成DataSource个参数值得获取和解析，采用注解Configuration方式，主要的代码如下：

   package image.dao;

   import java.sql.SQLException;

   import javax.sql.DataSource;

   import org.slf4j.Logger;

   import org.slf4j.LoggerFactory;

   import org.springframework.boot.context.properties.ConfigurationProperties;

   import org.springframework.context.annotation.Bean;

   import org.springframework.context.annotation.Configuration;

   import org.springframework.context.annotation.Primary;

   import com.alibaba.druid.pool.DruidDataSource;

   @Configuration

   @ConfigurationProperties(prefix="spring.datasource")

   public class DataSourceConfig {

   private Logger logger=LoggerFactory.getLogger(DataSourceConfig.class);

   private String type;

   private String url;

   private String driverClassName;

   private String username;

   private String password;

   private String filters;

   private String connectionProperties;

   public String getType() {

   return type;

   }

   public void setType(String type) {

   this.type = type;

   }

   public String getUrl() {

   return url;

   }

   public void setUrl(String url) {

   this.url = url;

   }

   public String getDriverClassName() {

   return driverClassName;

   }

   public void setDriverClassName(String driverClassName) {

   this.driverClassName = driverClassName;

   }

   public String getUsername() {

   return username;

   }

   public void setUsername(String username) {

   this.username = username;

   }

   public String getPassword() {

   return password;

   }

   public void setPassword(String password) {

   this.password = password;

   }

   public String getFilters() {

   return filters;

   }

   public void setFilters(String filters) {

   this.filters = filters;

   }

   public String getConnectionProperties() {

   return connectionProperties;

   }

   public void setConnectionProperties(String connectionProperties) {

   this.connectionProperties = connectionProperties;

   }

   @Bean

   @Primary

   public DataSource druidDataSource()

   {

   DruidDataSource dataSource=new DruidDataSource();

   dataSource.setUrl(url);

   dataSource.setUsername(username);

   dataSource.setPassword(password);

   dataSource.setDriverClassName(driverClassName);

   dataSource.setConnectionProperties(connectionProperties);

   try {

   dataSource.setFilters(filters);

   } catch (SQLException e) {

   e.printStackTrace();

   }

   logger.info(">>>>>>>>>>>>>>>>>>>>>>Druid DataSource init>>>>>>>>>>>");

   return dataSource;

   }

   }

7. 7

   运行Spring boot的程序，进行视频文件数据的上传，检查数据库连接是否正常

   1）启动Spring boot主类Application,可以看到日志输出了自定义的DruidDataSource初始化成功

    [  restartedMain] image.dao.DataSourceConfig               : >>>>>>>>>>>>>>>>>>>>>>Druid DataSource init>>>>>>>>>>>

   2）在浏览器中访问视频上传的功能页面，进行视频文件上传，成功后可以看到数据库插入了一条心的记录，没有错误出现，说明我们已经解决了该问题