利用bmob平臺，使用雲端邏輯在Xcode上實現用戶註冊、登陸
思路：bmob上構建雲端邏輯，xcode經過http請求來在不引入bmob SDK的狀況下，遠程操做bmob上構建的數據庫，實現註冊、登陸。javascript
xcode導入html
AFNetWorking-----------------網絡請求，AFNetworking請求回的數據默認爲nsdictionary，無需進一步轉換java
MBProgressHUD--------------------異步加載時的菊花顯示
git
1.bmob雲端邏輯構建github
首先bmob註冊，建立應用，拿到secretKey數據庫
雲端邏輯的調用連接是：json
http://cloud.bmob.cn/secretKey/functionName數組
雲端邏輯的編寫使用的js，沒基礎的可學下JS的基礎用法，這裏提一下xcode
a.js數組建立 new Array()、動態添加arr.push(element)瀏覽器
b.字典是一種特殊的數組，經過key訪問value，字典建立var dic = {"key":"value"}
c.調用response.send(obj)來返回雲端函數處理的結果到xcode，以進一步處理
舉個粒子：
function example(request,response,modules)
{
//客戶端有參數上傳，使用的post請求，request拿到相應參數
var curname = request.body.name;
var curPsd = request.body.password;
//response將雲端執行的結果返回SDK
respose.send(obj)
modules提供各類對象處理的模塊，如oData數據庫對象、oFunctions雲端邏輯對象
var db = modules.oData;
db.find(
{
"table":"tableName"
},functions(err,data)
{
});
}
具體的數據庫操做，方法之間的調用，看bmob開發文檔！
我這裏建立了4個雲端函數，多說無益，附上doLogin、registerUser的代碼
function onRequest(request, response, modules) {
var functions = modules.oFunctions;
var nameArr = new Array();
var str = "";
functions.run({
"name":"getAllUserName"
},function(err,data){
//data爲二進制流,轉換一下
var jsonObj = JSON.parse(data);
// response.send(jsonObj);
for(var o in jsonObj){
var tmpstr = jsonObj[o];
if(tmpstr){
//非空字符串
nameArr.push(tmpstr);
}
}
// response.send(nameArr);
var curname = request.body.username;
var curpassword = request.body.password;
//設立boolean變量，0-false，1-true
var flag = 1;
//構建輸出端口
var finalArr = {"code":"","msg":""};
for(var i in nameArr){
var tmpStr = nameArr[i];
// response.send(tmpStr);
if(tmpStr == curname){
flag = 0;
finalArr["code"] = "100";
finalArr["msg"] = "用戶名已註冊";
// response.send("用戶名已註冊！");
response.send(finalArr);
break;
}
}
if(flag){
var db = modules.oData;
finalArr["code"] = "200";
if(curname && curpassword){
db.insert({
"table":"TestUser",
"data":{"name":curname,"password":curpassword}
},function(err,data){
if(err){
// response.send(err);
finalArr["msg"] = err;
}else{
// response.send("註冊成功");
finalArr["msg"] = "註冊成功";
}
response.send(finalArr);
});
}
}
});
}
function onRequest(request, response, modules) {
var functions = modules.oFunctions;
var nameArr = new Array();
functions.run({
"name":"getAllUserName"
},function(err,data){
var jsonObj = JSON.parse(data);
for(var o in jsonObj){
var tmpstr = jsonObj[o];
if(tmpstr){
nameArr.push(tmpstr);
}
}
// response.send(nameArr);
var curname = request.body.username;
var curpassword = request.body.password;
var flag = 0;
//構建responseObj
var responseObj = {"code":"","msg":""};
for(var o in nameArr){
var tmpstr = nameArr[o];
if(curname == tmpstr){
flag = 1;
break;
}
}
if(flag == 0){
// response.send("用戶名未註冊！"
responseObj["code"] = "100";
responseObj["msg"] = "用戶名未註冊！";
response.send(responseObj);
}else{
var db = modules.oData;
db.find({
"table":"TestUser"
//單條數據必須使用objectID查詢
// "name":curname
},function(err,data){
// response.send(data);
//遍歷data，拿到相應name的password
var jsonObj = JSON.parse(data);
var arr = jsonObj["results"];
// var loginFlag = 0;
for(var o in arr){
var theName = arr[o].name;
if(theName == curname){
var thePassword = arr[o].password;
if(thePassword == curpassword){
// response.send("登陸成功！");
responseObj["code"] = "200";
responseObj["msg"] = "登陸成功！";
}else{
// response.send("密碼錯誤！");
responseObj["code"] = "201";
responseObj["msg"] = "密碼錯誤！";
}
response.send(responseObj);
break;
}
}
});
}
})
}
雲端函數的調試有兩種方式，一種直接瀏覽器上連接
另外一種函數寫完，直接測試（推薦），網頁連接僅指向最近的一次正確提交，顯示不了錯誤
Xcode發起請求，並拿回處理結果
1.afnetworking封裝（不在贅述）
// AFNetWorkingHelper.m
// DateCorner
//
// Created by 小兒黑挖土 on 16/12/2.
// Copyright © 2016年 小兒黑挖土. All rights reserved.
#import "AFNetWorkingHelper.h"
static AFNetWorkingHelper *_instance = nil;
@interface AFNetWorkingHelper ()
@property (nonatomic,strong)AFHTTPSessionManager *manager;
@end
@implementation AFNetWorkingHelper
+(instancetype) defaultHelper{
static dispatch_once_t token;
dispatch_once(&token, ^{
_instance = [[super allocWithZone:NULL] init];
[_instance initialization];
});
return _instance;
}
//重寫alloc，copy的調用方法，instanc只初始化一次，實現單例
+(id)allocWithZone:(struct _NSZone *)zone{
return [AFNetWorkingHelper defaultHelper];
}
-(id)copyWithZone:(struct _NSZone *)zone{
return [AFNetWorkingHelper defaultHelper];
}
#pragma mark HTTP
-(void)sendRequestWithURLString:(NSString *)urlString
parameters:(NSDictionary *)parameters
success:(void (^)(NSURLSessionDataTask *,id))success
failure:(void (^)(NSURLSessionDataTask *,NSError *))failure
cache:(BOOL)useCache{
// _manager.responseSerializer = [AFHTTPResponseSerializer serializer];
// _manager.responseSerializer.acceptableContentTypes = [NSSet setWithObject:@"text/html"];
if(useCache){
_manager.requestSerializer.cachePolicy = NSURLRequestReturnCacheDataElseLoad;
}else{
_manager.requestSerializer.cachePolicy = NSURLRequestUseProtocolCachePolicy;
}
if(parameters != nil){//post
[_manager POST:urlString parameters:parameters progress:nil success:^(NSURLSessionDataTask * _Nonnull task, id _Nullable responseObject) {
@try{
success(task,responseObject);
}@catch(NSException *exception){
NSLog(@"[%@] throws exception:%@",NSStringFromSelector(_cmd),exception);
}
} failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
@try{
failure(task,error);
}@catch(NSException *exception){
NSLog(@"[%@] throws exception:%@",NSStringFromSelector(_cmd),exception);
}
}];
}else{//get
[_manager GET:urlString parameters:parameters progress:nil success:^(NSURLSessionDataTask * _Nonnull task, id _Nullable responseObject) {
@try{
success(task,responseObject);
}@catch(NSException *exception){
NSLog(@"[%@] throws exception:%@",NSStringFromSelector(_cmd),exception);
}
} failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
@try{
failure(task,error);
}@catch(NSException *exception){
NSLog(@"[%@] throws exception:%@",NSStringFromSelector(_cmd),exception);
}
}];
}
}
-(void)sendRequestWithURLString:(NSString *)urlString
parameters:(NSDictionary *)parameters
success:(void (^)(NSURLSessionDataTask *,id))success
failure:(void (^)(NSURLSessionDataTask *,NSError *))failure{
[self sendRequestWithURLString:urlString parameters:parameters success:success failure:failure cache:NO];
}
-(void)sendRequestWithURLString:(NSString *)urlString
success:(void (^)(NSURLSessionDataTask *,id))success
failure:(void (^)(NSURLSessionDataTask *,NSError *))failure
cache:(BOOL)useCache{
[self sendRequestWithURLString:urlString parameters:nil success:success failure:failure cache:useCache];
}
-(void)sendRequestWithURLString:(NSString *)urlString
success:(void (^)(NSURLSessionDataTask *,id))success
failure:(void (^)(NSURLSessionDataTask *,NSError *))failure{
[self sendRequestWithURLString:urlString parameters:nil success:success failure:failure cache:NO];
}
-(void)uploadWithURLString:(NSString *)urlString
data:(NSData *)data
success:(void (^)(NSURLResponse *,id))success
failure:(void (^)(NSURLResponse *,NSError *))failure{
NSURL *url = [NSURL URLWithString:urlString];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
[request addValue:@"b21fbd9b0ce4879dc618f6f685c223e0" forHTTPHeaderField:@"X-Bmob-Application-Id"];
[request addValue:@"8f397fe28f5e02d316d9af109b3fcdc9" forHTTPHeaderField:@"X-Bmob-REST-API-Key"];
[request addValue:@"image/jpeg" forHTTPHeaderField:@"Content-Type"];
[request setHTTPBody:data];
[request setHTTPMethod:@"POST"];
NSURLSessionDataTask *task = [_manager dataTaskWithRequest:request completionHandler:^(NSURLResponse * _Nonnull response, id _Nullable responseObject, NSError * _Nullable error) {
@try{
if(error != nil){
/*error NSError * domain: @"com.alamofire.error.serialization.response" - code: 18446744073709550605 0x0000600000440a50*/
failure(response,error);
}else{
success(response,responseObject);
}
}@catch(NSException *exception){
NSLog(@"throw exception:%@",exception);
}
}];
[task resume];
}
#pragma mark private
-(void)initialization{
self.manager = [AFHTTPSessionManager manager];
}
@end
2.封裝參數，post請求
-(void)uploadPara{
NSString *username = _usernameField.text;
NSString *password = _passwordField.text;
NSDictionary *para = @{@"username":username,@"password":password};
AFNetWorkingHelper *helper = [AFNetWorkingHelper defaultHelper];
[helper sendRequestWithURLString:KURLTypeRegister parameters:para success:^(NSURLSessionDataTask *task, NSDictionary *jsonObj) {
[self successWithTask:task response:jsonObj];
} failure:^(NSURLSessionDataTask *task, NSError *error) {
[self failureWithTask:task error:error];
}];
}
3.拿回結果，進行相應的邏輯處理
//登陸狀態
-(void)successWithTask:(NSURLSessionTask *)task response:(NSDictionary *)data{
if(data){
//hud顯示在異步網絡請求前，消失在數據回傳以後
[hud hideAnimated:YES];
NSString *msg = data[@"msg"];
NSInteger code = [data[@"code"] integerValue];
[self tipsAniamtion:msg];
if(code == 200){
[self performSelector:@selector(doDismiss) withObject:nil afterDelay:3];
}
}
}
-(void)failureWithTask:(NSURLSessionTask *)task error:(NSError *)error{
// NSLog(@"register with error:%@",error.localizedDescription);
// [self tipsAniamtion:error.localizedDescription];
}
項目效果以下：
源項目地址：https://github.com/xuanyuelin/BmobRegister/tree/master
有興趣的夥伴，能夠留言相互討論！
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