Cocos2d-x 3.2 Lua example XMLHttpRequestTest (Http network request), cocos2dlua

Cocos2d-x 3.2 Lua example XMLHttpRequestTest (Http network request), cocos2dlua
Cocos2d-x 3.2 Lua example XMLHttpRequestTest (Http network request)

This blog introduces XMLHttpRequestTest in the Cocos2d-x 3.2Lua example, which provides two http request methods: GET and POST. The returned data types include:Cc. XMLHTTPREQUEST_RESPONSE_STRING = 0 -- returns the string type.
Cc. XMLHTTPREQUEST_RESPONSE_ARRAY_BUFFER = 1 -- returns the byte array type.
Cc. XMLHTTPREQUEST_RESPONSE_BLOB = 2 -- returns the Binary large object type.
Cc. XMLHTTPREQUEST_RESPONSE_DOCUMENT = 3 -- type of the returned Document Object
Cc. XMLHTTPREQUEST_RESPONSE_JSON = 4 -- return the JSON data type.

The definitions of these constants can be found in Cocos2dConstants. lua.

Sample Code:

-- [[========================= XMLHttpRequestTest. luahttp request =======================]] -- require ("json") local function XMLHttpRequestLayer () local layer = cc. layer: create () -- create Layer local winSize = cc. director: getInstance (): getWinSize () -- Obtain the window size local margin = 40 -- spacing local space = 35 -- width local function init () local label = cc. label: createWithTTF ("XML Http Request Test", s_arialPath, 28) -- use the label Label: setAnchorPoint (cc. p (0.5, 0.5) -- set the anchor label: setPosition (cc. p (winSize. width/2, winSize. height-margin) -- sets the display position. The width is in the middle of the screen. The height is the screen height minus the Spacing layer: addChild (label, 0) -- add tags to layer -- display the return code label local labelStatusCode = cc. label: createWithTTF ("HTTP Status Code", s_markerFeltFontPath, 20) labelStatusCode: setAnchorPoint (cc. p (0.5, 0.5) labelStatusCode: setPosition (cc. p (winSize. width/2, winSize. height-margin-6 * space) layer: addChild (labelStatusCode) local menuRequest = cc. menu: create () -- create Menu menuRequest: setPosition (cc. p (0, 0) layer: addChild (menuRequest) -- add menu -- Get local function onMenuGetClicked () local xhr = cc. XMLHttpRequest: new () -- http request xhr. responseType = cc. XMLHTTPREQUEST_RESPONSE_STRING -- response type xhr: open ("GET", "http://httpbin.org/get") -- open link -- call local function onReadyStateChange () when the status changes () -- display Status text local statusString = "Http Status Code :".. xhr. statusText labelStatusCode: setString (statusString) print (xhr. response) end -- register the script callback method xhr: registerScriptHandler (onReadyStateChange) xhr: send () -- send the request labelStatusCode: setString ("waiting... ") end -- test the Get label local labelGet = cc. label: createWithTTF ("Test Get", s_arialPath, 22) labelGet: setAnchorPoint (cc. p (0.5, 0.5) local itemGet = cc. menuItemLabel: create (labelGet) -- menu tag itemGet: registerScriptTapHandler (onMenuGetClicked) -- menu Click Event itemGet: setPosition (cc. p (winSize. width/2, winSize. height-margin-space) menuRequest: addChild (itemGet) -- add menu item -- Post local function onMenuPostClicked () local xhr = cc. XMLHttpRequest: new () -- creates an XMLHttpRequest object xhr. responseType = cc. XMLHTTPREQUEST_RESPONSE_STRING -- the corresponding type is string xhr: open ("POST", "http://httpbin.org/post") -- post method local function onReadyStateChange () labelStatusCode: setString ("Http Status Code :".. xhr. statusText) print (xhr. response) end -- register the script method callback xhr: registerScriptHandler (onReadyStateChange) xhr: send () -- send labelStatusCode: setString ("waiting... ") end -- test the Post label local labelPost = cc. label: createWithTTF ("Test Post", s_arialPath, 22) labelPost: setAnchorPoint (cc. p (0.5, 0.5) -- set the local itemPost = cc. menuItemLabel: create (labelPost) -- set the menu item tag itemPost: registerScriptTapHandler (onMenuPostClicked) -- register the menu item and click the callback method itemPost: setPosition (cc. p (winSize. width/2, winSize. height-margin-2 * space) menuRequest: addChild (itemPost) -- Post Binary local function onMenuPostBinaryClicked () local xhr = cc. XMLHttpRequest: new () -- creates an XMLHttpRequest object xhr. responseType = cc. XMLHTTPREQUEST_RESPONSE_ARRAY_BUFFER -- the returned data is byte stream xhr: open ("POST", "http://httpbin.org/post") -- open Socket -- call local function onReadyStateChange () local response = xhr when the status changes. response -- Obtain the returned data. local size = table. getn (response) -- get the returned data size local strInfo = "" for I = 1, size do if 0 = response [I] then strInfo = strInfo .. "\ '\ 0 \'" else strInfo = strInfo .. string. char (response [I]) end labelStatusCode: setString ("Http Status Code :".. xhr. statusText) print (strInfo) end -- register the script method callback xhr: registerScriptHandler (onReadyStateChange) xhr: send () -- send labelStatusCode: setString ("waiting... ") end -- Test the use of the Post request to send the byte stream local labelPostBinary = cc. label: createWithTTF ("Test Post Binary", s_arialPath, 22) labelPostBinary: setAnchorPoint (cc. p (0.5, 0.5) local itemPostBinary = cc. menuItemLabel: create (labelPostBinary) itemPostBinary: registerScriptTapHandler (onMenuPostBinaryClicked) itemPostBinary: setPosition (cc. p (winSize. width/2, winSize. height-margin-3 * space) menuRequest: addChild (itemPostBinary) -- Post Json local function onMenuPostJsonClicked () local xhr = cc. XMLHttpRequest: new () -- creates an XMLHttpRequest object xhr. responseType = cc. XMLHTTPREQUEST_RESPONSE_JSON -- json data type xhr: open ("POST", "http://httpbin.org/post") -- POST method local function onReadyStateChange () -- display status code, successfully display 200 labelStatusCode: setString ("Http Status Code :".. xhr. statusText) local response = xhr. response -- Obtain the response data local output = json. decode (response, 1) -- parse json data table. foreach (output, function (I, v) print (I, v) end) print ("headers are") table. foreach (output. headers, print) end -- register the script method callback xhr: registerScriptHandler (onReadyStateChange) xhr: send () -- send request labelStatusCode: setString ("waiting... ") end -- test the label local labelPostJson = cc that uses the POST method to send json. label: createWithTTF ("Test Post Json", s_arialPath, 22) labelPostJson: setAnchorPoint (cc. p (0.5, 0.5) -- The anchor local itemPostJson = cc. menuItemLabel: create (labelPostJson) -- menu item label itemPostJson: registerScriptTapHandler (onMenuPostJsonClicked) -- register a menu item and click itemPostJson: setPosition (cc. p (winSize. width/2, winSize. height-margin-4 * space) menuRequest: addChild (itemPostJson) end -- node callback event local function onNodeEvent (eventName) if "enter" = eventName then init () end -- Registration layer listening callback event layer: registerScriptHandler (onNodeEvent) return layerendfunction XMLHttpRequestTestMain () local scene = cc. scene: create () -- create scenario scene: addChild (XMLHttpRequestLayer () -- add layer scene: addChild (CreateBackMenuItem () -- add a return menu item. For more information, see helper. lua file return sceneend

As follows:
Test Get:

Test Post:

Test Post Binary:


Test Post JSON:




When creating a cocos2D-x project in VS2010, Select Lua support: Support Lua (Hook), an error is reported after generation,

Some library files are not properly loaded. Find the corresponding library file and paste it to the corresponding location. Do not forget to check whether the file has permissions.

How to combine cocos2d-x with Lua to use specific points

The cocos2d-x comes with the lua engine. Look at this. Although it is English, it is easy to understand.
Cocos2d-x NEW Lua Engine README
Main features
Support autorelease CCObject object.
Call Lua function from C ++ (local, global, closure), avoid memory leaks.
Add CCNode: setPosition (x, y), CCNode: getPosition () huge performance boost.
Remove needless class and functions from tolua ++. pkg files, improved performance.
CCMenuItem events handler.
CCNode onEnter/onExit events handler.
CCLayer touch & multi-touches events handler.
Check the two connections.
Www.cocos2d-x.org/..uments
Scripting and Translating between Programming ages