<
### sample
我们提供的 sample CloudCode 中有一个名为 add.lua 的示例，它可以获取两个数字的和。
``` lua
local Logger = require("DroiCloud.CloudLogger")
local _M = {}
function _M.main(request)
local response = {}
Logger.log(Logger.DEBUG, "add")
if request then
local cal = request.num1 + request.num2
--Put result in a table and return it.
response['result'] = cal
end
return response
end
return _M
```
若是想要执行 add.lua，可以调用以下代码。
> **提醒：** 请先阅读 [继承 DroiObject 并扩充存储数据属性](https://www.droibaas.com/html/doc_24124.html#DroiObjectExtension)，切记需要 `AddInput ` 和 `AddResult` 注册到 `DroiObject`。
* Objective-C
```objc
@interface AddInput : DroiObject
DroiExpose
@property float num1;
DroiExpose
@property float num2;
@end
@implementation AddInput
@end
@interface AddResult : DroiObject
DroiExpose
@property float result;
@end
@implementation AddResult
@end
- (void) callSimpleCloudCode {
AddInput* addInput = [AddInput new];
addInput.num1 = 1.0;
addInput.num2 = 2.0;
DroiError* error;
AddResult* addResult = [DroiCloud callRestApi:@"APIKey" apiPath:@"/api/v2/add" method:DROIMETHOD_POST parameter:addInput andClassType:AddResult.class error:&error];
}
// 不建议使用 callCloudService
// - (void) callSimpleCloudCode() {
// AddInput* addInput = [AddInput new];
// addInput.num1 = 1.0;
// addInput.num2 = 2.0;
// AddResult* addResult = [DroiCloud callCloudService:@"add.lua" parameter:addInput andClassType:[AddResult class] error:nil];
// NSLog(@"Result: %d", addResult);
// }
@end
// 不建议使用 callCloudService
//- (void) callSimpleCloudCodeInBG {
// AddInput* addInput = [AddInput new];
// addInput.num1 = 1.0;
// addInput.num2 = 2.0;
// DroiTaskDispatcher* taskDispatcher = [DroiTaskDispatcher getTaskDispatcher:BackgroundThreadDispatcher];
// [taskDispatcher enqueueTask:^{
// [DroiCloud callCloudServiceInBackground:@"add.lua" parameter:addInput andCallback:^(AddResult *addResult , DroiError *error) {
// XCTAssertNotEqual(addResult.result, 0.0);
// } withClassType:[AddResult2 class]];
//}];
// AddResult* addResult = [DroiCloud callCloudService:@"add.lua" parameter:addInput andClassType:[AddResult2 class] error:nil];
// XCTAssertNotEqual(addResult.result, 0.0);
}
```
* Swift
```swift
import DroiCoreSDK.DroiObject
import DroiCoreSDK.DroiCloud
class AddInput : DroiObject{
// DroiExpose
var num1: Float = 0.0
// DroiExpose
var num2: Float = 0.0
}
class AddResult : DroiObject{
// DroiExpose
var result: Float = 0.0
}
func callSimpleCloudCode() {
var error: DroiError? = nil
let addInput = AddInput()
addInput.num1 = 1.0
addInput.num2 = 2.0
let addResult = DroiCloud.callRestApi("APIKey", apiPath: "/api/v2/add", method: .DROIMETHOD_POST, parameter: addInput, andClassType: AddResult.self, error: &error)
}
// 不建议使用 callCloudService
//func callSimpleCloudCode(){
// let target_cloudcode_name = "add.lua"
// var error: DroiError? = nil
// let addInput = AddInput()
// addInput.num1 = 1.0
// addInput.num2 = 2.0
// var addResult = AddResult()
// addResult = DroiCloud.callCloudService(target_cloudcode_name, parameter: addInput, andClassType: AddResult.self, error: &error) as! AddResult!
}
// 不建议使用 callCloudService
//func callSimpleCloudCodeInBG(){
// let disp = DroiTaskDispatcher.getTaskDispatcher("123")
// disp.enqueueTask {
// DroiCloud.callCloudServiceInBackground(self.target_cloudcode_name, parameter: self.addInput, andCallback:
// {
// (addResult, error) in
// XCTAssertNotEqual(addResult.result, 0.0, "Not a valiad calcuation")
// }
// , withClassType: AddResult.self)
// }
// sleep(3)
//}
``` ]]>
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