protobuf3 iOS 接入 protobuf

1.引入官方基礎pod

谷歌將protobuf須要使用的基礎類封裝成了一個pod,所以能夠直接安裝該pod,沒必要再手工導入. 
以下: 
pod "Protobuf", :git => "https://github.com/google/protobuf.git" 
之因此設置git路徑,是由於這樣pod ‘Protobuf’, ‘~> 3.1.0’一直沒有下載下來,因此直接使用了官網路徑.

2.下載生成代碼工具

a.安裝protoc: brew install –devel protobuf 若是出現了下面的版本號,說明安裝成功 ➜ ~ protoc --version libprotoc 3.0.0 關於protoc工具的使用請參考 https://developers.google.com/protocol-buffers/docs/proto3

b.另一個方法是直接從github下載,本身編譯一個protoc 連接:https://github.com/google/protobuf/tree/master/objectivec.編譯完成後, 
在protobuf/src下能夠找到該工具

3.定義數據模型

syntax = "proto3";
package tutorial;
message SearchResponse {
  repeated Result results = 1;
}

message Result {
  string url = 1;
  string title = 2;
  repeated string snippets = 3;
}

將以上數據保存到Test.proto的文件中.

生成代碼的命令爲: 
protoc –objc_out=tmp Test.proto 
最後一個參數是定義的數據模型,生成的代碼會寫入objc_out對應的文件夾內.注意是兩個短橫槓

4.簡單使用

1. 直接將生成的代碼拖入1建立的項目中,
2. import相關頭文件
3. protobuf爲了性能考慮,建立的都是mrc文件,所以在build phrases ->Compile 
   sources中給拖入的文件添加 -fno-objc-arc的標誌

Result *res = [[Result alloc] init];
    res.title = @"11";
    NSLog(@"%@",res.description);

    //序列化
    NSData *data = [res data];

    //反序列化
    NSError *error;
    Result *res1 = [[Result alloc] initWithData:data error:&error];
    NSLog(@"%@",res1.description);

post請求：

- (void)protoPost {
    // 設置請求體
    BidRequest * bidRequest = [[BidRequest alloc] init];
    bidRequest.bid = @"bid";
    bidRequest.version = @"version";
    
    BidRequest_BidUserInfo * bidUserInfo = [[BidRequest_BidUserInfo alloc] init];
    bidUserInfo.ip = @"ip";
    bidRequest.bidUserInfo = bidUserInfo;
    
    BidRequest_BidAppInfo * bidAppInfo = [[BidRequest_BidAppInfo alloc] init];
    bidAppInfo.appId = @"appId";
    bidAppInfo.appName = @"appName";
    bidRequest.bidAppInfo = bidAppInfo;
    
    
    BidRequest_BidAdSlotInfo * bidAdSlotInfo = [[BidRequest_BidAdSlotInfo alloc] init];
    bidAdSlotInfo.slotId = @"slotId";
    bidAdSlotInfo.width = 11;
    bidAdSlotInfo.height = 22;
    bidRequest.bidAdSlotInfo = bidAdSlotInfo;
    
    self.myData = [bidRequest data];

    NSURL * url = [NSURL URLWithString:@"http://192.168.10.45:9988/unioncast-ssp-manager/bidding/ssp/process"];
    NSMutableURLRequest * request = [NSMutableURLRequest requestWithURL:url];
    request.timeoutInterval = 5;
    request.HTTPMethod = @"POST";
    request.HTTPBody = self.myData;
    [request setValue:@"application/protobuf" forHTTPHeaderField:@"Content-Type"];
    NSURLSession * session = [NSURLSession sessionWithConfiguration:[NSURLSessionConfiguration defaultSessionConfiguration]];
    NSURLSessionDataTask * task = [session dataTaskWithRequest:request completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) {
        if (error) {
            NSLog(@"error = %@",error);
            return;
        } else {
            NSLog(@"------ data = %@",data);
            NSLog(@"success");
            // 返回的數據
            BidRequest * bidRequest = [BidRequest parseFromData:data error:nil];
            NSLog(@"=====%@",bidRequest.description);
            NSString * result = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
            
            NSLog(@"%@",result);
        }
    }];
    [task resume];
}