!17 配置文件增加环境变量的支持，有环境变量则使用，没有则使用默认

Merge pull request !17 from suanyun/master

.gitignore

@@ -3,3 +3,4 @@
 *.iml
 */target/*
 */*.iml
+/.gradle/

eladmin-system/src/main/resources/config/application-dev.yml

@@ -4,9 +4,9 @@ spring:
     druid:
       db-type: com.alibaba.druid.pool.DruidDataSource
       driverClassName: net.sf.log4jdbc.sql.jdbcapi.DriverSpy
-      url: jdbc:log4jdbc:mysql://localhost:3306/eladmin?serverTimezone=Asia/Shanghai&characterEncoding=utf8&useSSL=false
-      username: root
-      password: 123456
+      url: jdbc:log4jdbc:mysql://${DB_HOST:localhost}:${DB_PORT:3306}/${DB_NAME:eladmin}?serverTimezone=Asia/Shanghai&characterEncoding=utf8&useSSL=false
+      username: ${DB_USER:root}
+      password: ${DB_PWD:123456}
       # 初始连接数
       initial-size: 5
       # 最小连接数

eladmin-system/src/main/resources/config/application-prod.yml

@@ -4,9 +4,9 @@ spring:
     druid:
       db-type: com.alibaba.druid.pool.DruidDataSource
       driverClassName: net.sf.log4jdbc.sql.jdbcapi.DriverSpy
-      url: jdbc:log4jdbc:mysql://localhost:3306/eladmin?serverTimezone=Asia/Shanghai&characterEncoding=utf8&useSSL=false
-      username: root
-      password: 123456
+      url: jdbc:log4jdbc:mysql://${DB_HOST:localhost}:${DB_PORT:3306}/${DB_NAME:eladmin}?serverTimezone=Asia/Shanghai&characterEncoding=utf8&useSSL=false
+      username: ${DB_USER:root}
+      password: ${DB_PWD:123456}
       # 初始连接数
       initial-size: 5
       # 最小连接数

eladmin-system/src/main/resources/config/application.yml

@@ -23,10 +23,10 @@ spring:
 
   redis:
     #数据库索引
-    database: 0
-    host: 127.0.0.1
-    port: 6379
-    password:
+    database: ${REDIS_DB:0}
+    host: ${REDIS_HOST:127.0.0.1}
+    port: ${REDIS_PORT:6379}
+    password: ${REDIS_PWD:}
     #连接超时时间
     timeout: 5000