"Go" iOS Development Web page-send JSON data to server and multivalued parameters

Original: http://www.cnblogs.com/wendingding/p/3950132.html

First, send JSON data to the server

Steps to send JSON data to the server:

(1) Be sure to use the POST request

(2) Set the request header

(3) Set the JSON data as the request body

code example:

1#import"YYViewController.h"23@interfaceYyviewcontroller ()45@end67@implementationYyviewcontroller89-(void) Viewdidload10{11[Super Viewdidload];12}1314-(void) Touchesbegan: (Nsset *) touches withevent: (Uievent *)Event15{16//1. Create a requestNsurl *url = [Nsurl urlwithstring:@"Http://192.168.1.200:8080/MJServer/order"];Nsmutableurlrequest *request =[Nsmutableurlrequest Requestwithurl:url];Request. HttpMethod =@"POST";2021st//2. Set the request header[Request SetValue:@"Application/json"Forhttpheaderfield:@"Content-type"];2324//3. Set the request bodyNsdictionary *json =@{26@"order_id" :@"123",27@"user_id" :@"789",28@"Shop" :@"Toll"29};3031//NSData-Nsdictionary32 // Nsdictionary-- > Nsdata33 nsdata *data = [nsjsonserialization Datawithjsonobject:json options:nsjsonwritingprettyprinted Error:nil]; 34 request. Httpbody = Data; 36 //4. Send Request PNS [nsurlconnection Sendasynchronousrequest:request Queue:[nsoperationqueue Mainqueue] completionhandler:^ (NSURLResponse *response, NSData *data, Nserror *connectionerror) {NSLog (@ "%d", data.length); 39}]; 40 }41 42  @end           

Two, multi-value parameters

Multivalued parameter: One parameter corresponds to multiple values.

Request parameters such as the following:

Http://192.168.1.103:8080/MJServer/weather?place= Beijing &place= Henan &place= Hunan

The place property of the server is an array. Therefore, using the same parameter does not overwrite the value of the server.

"Go" iOS Development Web page-send JSON data to server and multivalued parameters