首先我們使用Druid包的自帶密碼加密工具對我們的密碼進行加密
如下所示，我們可以得到私鑰、公鑰和密碼密文：
C:\Users\Administrator>cd /d C:\Users\Administrator\.m2\repository\com\alibaba\druid\1.1.6
C:\Users\Administrator\.m2\repository\com\alibaba\druid\1.1.6>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==
在Spring boot的配置文件中配置密碼和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
配置數據源的用戶密碼以及解密的配置選項，password和connectionProperties屬性：
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==
啟動Spring boot應用進行測試
1）啟動Application
2）測試有數據庫連接服務的操作，如視頻文件的上傳
這時候可以測試可以知道數據庫信息入庫失敗，日志提示數據庫連接失敗：
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）說明我們配置的解密過濾器沒有生效，這也說明了根據Spring Boot+Druid是存在兼容性問題的，因為官方的樣例是使用Spring+Druid的模式
最后得到的結論是：Druid與Spring Boot的兼容性問題還是比較多的，不建議使用該組合。
從項目提交的問題來看，也體現出與Spring Boot的兼容性問題，具體問題如下圖所示。
最后這里提供過一種方法解決該問題，就是自定義DataSource配置文件解析類，初始化Druid的數據源，讓其支持加密后的密文：
1）創建一個配置文件讀初始化類 DataSourceConfig
該類主要完成DataSource個參數值得獲取和解析，采用注解Configuration方式，主要的代碼如下：
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;
}
}
運行Spring boot的程序，進行視頻文件數據的上傳，檢查數據庫連接是否正常
1）啟動Spring boot主類Application,可以看到日志輸出了自定義的DruidDataSource初始化成功
[ restartedMain] image.dao.DataSourceConfig : >>>>>>>>>>>>>>>>>>>>>>Druid DataSource init>>>>>>>>>>>
2）在瀏覽器中訪問視頻上傳的功能頁面，進行視頻文件上傳，成功后可以看到數據庫插入了一條心的記錄，沒有錯誤出現，說明我們已經解決了該問題
