用jquery实现的Post方法可能如下

var param = $.param({
    data: JSON.stringify({"from":"234","messageid":"32132123","to":"234","conversationid":"4123456","timestamp":1459000790138,"type":1,"content":"ew","imageurl":""})
});
$http({
    url: MAIN_HOST_URL + '/chat/createmessage',
    method: "POST",
    data: param,
    headers: {'Content-Type': 'application/x-www-form-urlencoded'}
}).then(function (response) {
    var data = response.data,
        status = response.status,
        header = response.header,
        config = response.config;

    //console.log(JSON.stringify(data));

    if (status == 200) {

    }
    $ionicLoading.show({template: data.m, noBackdrop: true, duration: 2000});

    scope.$broadcast('scroll.refreshComplete');
}, function (response) {
    //console.log("error: " + JSON.stringify(response));
    var data = response.data,
        status = response.status,
        header = response.header,
        config = response.config;

    //JSON.stringify(
    scope.$broadcast('scroll.refreshComplete');
});

相同的代码，可以转换到ios里，使用ASIFormDataRequest实现，代码如下：

.xx.h

@interface ChatViewController : UIViewController<ASIHTTPRequestDelegate> {

}

xx.m

- (void) postMessage {

NSString *s = [NSString stringWithFormat:@"http://%@/chat/createmessage", site_url];

ASIFormDataRequest *request = [[ASIFormDataRequest alloc] initWithURL:[NSURL URLWithString:s]];

NSString *datas = @"{\"from\":\"234\",\"messageid\":\"32132123\",\"to\":\"234\",\"conversationid\":\"4123456\",\"timestamp\":1459000790138,\"type\":1,\"content\":\"ew\",\"imageurl\":\"\"}";

{

NSError *error;

//[request addRequestHeader:@"Content-Type" value:@"application/x-www-form-urlencoded; encoding=utf-8"];

//[request addRequestHeader:@"Accept" value:@"application/json"];

//[request setRequestMethod:@"POST"];

//[request setPostBody:tempJsonData];

[request setPostValue:datas forKey:@"data"];

[request startAsynchronous];

}

}

- (void)requestFinished:(ASIHTTPRequest *)request

{

}

- (void)requestFailed:(ASIHTTPRequest *)request

{

NSError *error = [request error];

}