Add the frame for installation.

rest/web_result.go

@@ -31,6 +31,7 @@ var (
 	CODE_WRAPPER_UNAUTHORIZED            = &CodeWrapper{Code: "UNAUTHORIZED", HttpStatus: http.StatusUnauthorized, Description: "没有权限，禁止访问"}
 	CODE_WRAPPER_NOT_FOUND               = &CodeWrapper{Code: "NOT_FOUND", HttpStatus: http.StatusNotFound, Description: "内容不存在"}
 	CODE_WRAPPER_RANGE_NOT_SATISFIABLE   = &CodeWrapper{Code: "RANGE_NOT_SATISFIABLE", HttpStatus: http.StatusRequestedRangeNotSatisfiable, Description: "文件范围读取错误"}
+	CODE_WRAPPER_NOT_INSTALLED           = &CodeWrapper{Code: "NOT_INSTALLED", HttpStatus: http.StatusInternalServerError, Description: "系统尚未安装"}
 	CODE_WRAPPER_UNKNOWN                 = &CodeWrapper{Code: "UNKNOWN", HttpStatus: http.StatusInternalServerError, Description: "服务器未知错误"}
 )