Refine the context and Try to fix the nil issue.

code/core/context.go

@@ -1 +1,30 @@
 package core
+
+import (
+	"github.com/eyebluecn/tank/code/tool/cache"
+	"github.com/jinzhu/gorm"
+	"net/http"
+)
+
+type Context interface {
+	//获取数据库链接
+	GetDB() *gorm.DB
+
+	//获取一个Bean
+	GetBean(bean IBean) IBean
+
+	//获取全局的Session缓存
+	GetSessionCache() *cache.Table
+
+	//获取全局的ControllerMap
+	GetControllerMap() map[string]IController
+
+	//响应http的能力
+	ServeHTTP(writer http.ResponseWriter, request *http.Request)
+
+	//系统安装成功
+	InstallOk()
+
+	//清空系统
+	Cleanup()
+}

code/core/global.go

@@ -5,3 +5,6 @@ package core
 //日志系统必须高保
 //全局唯一的日志对象(在main函数中初始化)
 var LOGGER Logger
+
+//全局唯一的上下文(在main函数中初始化)
+var CONTEXT Context