Use jquery Ajax to access WebService

This article will give you a detailed introduction of jquery Ajax calling methods to access WebService. If you need them, refer to the opposite.

Jquery code

The Code is as follows:	Copy code
Jquery. ajax ({ Type: 'post ', Datatype: 'json ', Success: function (data ){ // Do something... }, Error: function (error ){ // Do something... } });

WebService Processing

[WebMethod]

The Code is as follows:

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Public string Hello (){ // Return json // Method 1: manual stitching Return "{" Test ":" Test-Value "," Test ":" Test-Value "}"; // Method 2: serialize json // Introduce System. Runtime. Serialization. Json. DataContractJsonSerializer // Serialize data to json using the WriteObject Method // Use the JsonConvert. SerializeObject of Newtonsoft. Json. dll for processing. // Method 3: spit the directly spliced json string into the browser and do not need to return System. Web. HttpContext. Current. Response. Clear (); System. Web. HttpContext. Current. Response. ContentType = "application/json "; System. Web. HttpContext. Current. Response. Expires = 0; System. Web. HttpContext. Current. Response. Cache. SetNoStore (); System. Web. HttpContext. Current. Response. Write (jsonContent ); System. Web. HttpContext. Current. Response. End (); }

This is done, but some friends said that the returned xml data was not found url problems,

The Code is as follows:	Copy code
Page_Load (object sender, EventArgs e) { String method = Request. QueryString ["method"]; If ("Hello". Equals (method )) { // Copy the WebService method or directly call the WebService Method } }