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Java 第一次做REST服务,从android打电话_Java_C#_Android_Asp.net_Rest - Fatal编程技术网

Java 第一次做REST服务,从android打电话

Java 第一次做REST服务,从android打电话,java,c#,android,asp.net,rest,Java,C#,Android,Asp.net,Rest,我最近开始学习android编程以及如何创建restful web服务。我为android制作了一个简单的yahtzee游戏,为了扩展我在这两个平台上的知识,我想使用restful服务实现一个两人系统 我在asp.net MVC中创建了服务,代码如下,对url/games/2的get请求将返回: <Game> <Id>2</Id> <p1>100</p1> <p2>99</p2> &l

我最近开始学习android编程以及如何创建restful web服务。我为android制作了一个简单的yahtzee游戏,为了扩展我在这两个平台上的知识,我想使用restful服务实现一个两人系统

我在asp.net MVC中创建了服务,代码如下,对url/games/2的get请求将返回:

<Game>
   <Id>2</Id>
   <p1>100</p1>
    <p2>99</p2>
    <turn>1</turn>
</Game>
但我不知道如何传递参数。我服务中的Post方法将游戏对象作为参数。如果有人能给我任何建议,我将不胜感激

型号,Game.cs:

namespace YahtzTest.Models
{
    public class Game
    {
        public int Id { get; set; }
        public int turn { get; set; }
        public int p1 { get; set; }
        public int p2 { get; set; }
    }
}
控制器,GamesController.cs:

    namespace YahtzTest.Controllers
{
    public class GamesController : ApiController
    {
        static readonly IGameRepository repository = new GameRepository();

        public IEnumerable<Game> GetAllGames()
        {
            return repository.GetAll();
        }

        public Game GetGame(int id)
        {
            Game item = repository.Get(id);
            if (item == null)
            {
                throw new HttpResponseException(HttpStatusCode.NotFound);
            }
            return item;
        }

        public HttpResponseMessage PostGame(Game item)
        {
            item = repository.Add(item);
            var response = Request.CreateResponse<Game>(HttpStatusCode.Created, item);

            string uri = Url.Link("DefaultApi", new { id = item.Id });
            response.Headers.Location = new Uri(uri);
            return response;
        }

        public void PutGame(int id, Game game)
        {
            game.Id = id;
            if (!repository.Update(game))
            {
                throw new HttpResponseException(HttpStatusCode.NotFound);
            }
        }

        public void DeleteGame(int id)
        {
            Game item = repository.Get(id);
            if (item == null)
            {
                throw new HttpResponseException(HttpStatusCode.NotFound);
            }

            repository.Remove(id);
        }

    }
}
名称空间YahtzTest.Controllers
{
公共类游戏控制器:ApiController
{
静态只读igamrepository repository=新游戏存储库();
公共IEnumerable GetAllGames()
{
返回repository.GetAll();
}
公共游戏GetGame(int id)
{
游戏项目=存储库。获取(id);
如果(项==null)
{
抛出新的HttpResponseException(HttpStatusCode.NotFound);
}
退货项目;
}
公共HttpResponseMessage赛后信息(游戏项目)
{
item=存储库。添加(item);
var response=Request.CreateResponse(HttpStatusCode.Created,item);
字符串uri=Url.Link(“DefaultApi”,新的{id=item.id});
response.Headers.Location=新Uri(Uri);
返回响应;
}
公共无效PutGame(整数id,游戏)
{
game.Id=Id;
如果(!repository.Update(游戏))
{
抛出新的HttpResponseException(HttpStatusCode.NotFound);
}
}
公共游戏(int-id)
{
游戏项目=存储库。获取(id);
如果(项==null)
{
抛出新的HttpResponseException(HttpStatusCode.NotFound);
}
删除(id);
}
}
}
我在教程中学习的另外两个文件包括用于存储游戏的GameRepository.cs和IGameRepository.cs:

    namespace YahtzTest.Models
{
    interface IGameRepository
    {
        IEnumerable<Game> GetAll();
        Game Get(int id);
        Game Add(Game item);
        void Remove(int id);
        bool Update(Game item);
    }
}


    namespace YahtzTest.Models
{
    public class GameRepository : IGameRepository
    {
        private List<Game> games = new List<Game>();
        private int _nextId = 1;

        public GameRepository()
        {
            Add(new Game { turn = 0, p1 = 0, p2 = 0 });
            Add(new Game { turn = 1, p1 = 100, p2 = 99 });
            Add(new Game { turn = 0, p1 = 45, p2 = 75 });
        }



        public IEnumerable<Game> GetAll()
        {
            return games;
        }

        public Game Get(int id)
        {
            return games.Find(p => p.Id == id);
        }

        public Game Add(Game item)
        {
            if (item == null)
            {
                throw new ArgumentNullException("item");
            }
            item.Id = _nextId++;
            games.Add(item);
            return item;
        }

        public void Remove(int id)
        {
            games.RemoveAll(p => p.Id == id);
        }

        public bool Update(Game item)
        {
            if (item == null)
            {
                throw new ArgumentNullException("item");
            }
            int index = games.FindIndex(p => p.Id == item.Id);
            if (index == -1)
            {
                return false;
            }
            games.RemoveAt(index);
            games.Add(item);
            return true;
        }
    }
}
名称空间YahtzTest.Models
{
接口存储
{
IEnumerable GetAll();
游戏获取(int-id);
游戏添加(游戏项目);
无效删除(int-id);
bool更新(游戏项目);
}
}
名称空间YahtzTest.Models
{
公共类GameRepository:IGameRepository
{
私人列表游戏=新列表();
私有整数_nextId=1;
公共游戏库()
{
添加(新游戏{回合=0,p1=0,p2=0});
添加(新游戏{回合=1,p1=100,p2=99});
添加(新游戏{回合=0,p1=45,p2=75});
}
公共IEnumerable GetAll()
{
返回游戏;
}
公共游戏获取(int id)
{
返回games.Find(p=>p.Id==Id);
}
公共游戏添加(游戏项目)
{
如果(项==null)
{
抛出新的异常(“项”);
}
item.Id=_nextId++;
游戏。添加(项目);
退货项目;
}
公共无效删除(int id)
{
games.RemoveAll(p=>p.Id==Id);
}
公共布尔更新(游戏项)
{
如果(项==null)
{
抛出新的异常(“项”);
}
int index=games.FindIndex(p=>p.Id==item.Id);
如果(索引==-1)
{
返回false;
}
游戏。移除(索引);
游戏。添加(项目);
返回true;
}
}
}

基本上,你可以在POST上写一个字符串。在服务器端,当收到onPostReceived时,需要从字符串重新创建对象。我不知道您想如何发送数据(内容类型),请看

如果您想将一个对象发布到您的服务器,那么您可以这样做:(JSON示例)

    namespace YahtzTest.Models
{
    interface IGameRepository
    {
        IEnumerable<Game> GetAll();
        Game Get(int id);
        Game Add(Game item);
        void Remove(int id);
        bool Update(Game item);
    }
}


    namespace YahtzTest.Models
{
    public class GameRepository : IGameRepository
    {
        private List<Game> games = new List<Game>();
        private int _nextId = 1;

        public GameRepository()
        {
            Add(new Game { turn = 0, p1 = 0, p2 = 0 });
            Add(new Game { turn = 1, p1 = 100, p2 = 99 });
            Add(new Game { turn = 0, p1 = 45, p2 = 75 });
        }



        public IEnumerable<Game> GetAll()
        {
            return games;
        }

        public Game Get(int id)
        {
            return games.Find(p => p.Id == id);
        }

        public Game Add(Game item)
        {
            if (item == null)
            {
                throw new ArgumentNullException("item");
            }
            item.Id = _nextId++;
            games.Add(item);
            return item;
        }

        public void Remove(int id)
        {
            games.RemoveAll(p => p.Id == id);
        }

        public bool Update(Game item)
        {
            if (item == null)
            {
                throw new ArgumentNullException("item");
            }
            int index = games.FindIndex(p => p.Id == item.Id);
            if (index == -1)
            {
                return false;
            }
            games.RemoveAt(index);
            games.Add(item);
            return true;
        }
    }
}
        HttpClient httpClient = HttpHelper.getHttpClient();
        HttpPost httppost = new HttpPost("yourServerAddress");
        httppost.setHeader("Accept", "application/json; charset=utf-8");
        httppost.setHeader("Content-type", "application/json; charset=utf-8");

        // StringEntity
        String inStr = yourObject.toString();
        StringEntity se = new StringEntity(inStr, HTTP.UTF_8);

        // Params
        HttpParams params = new BasicHttpParams();
        params.setParameter(CoreProtocolPNames.HTTP_ELEMENT_CHARSET, HTTP.UTF_8);
        httppost.setParams(params);         
        httppost.setEntity(se);

        // Fire and read response
        HttpResponse response = httpclient.execute(httppost);

        // read answer
        String content = null;
        InputStream stream = null;
        try {
            if (response != null) {
                stream = response.getEntity().getContent();
                InputStreamReader reader = new InputStreamReader(stream, HTTP.UTF_8);
                BufferedReader buffer = new BufferedReader(reader);
                StringBuilder sb = new StringBuilder();
                String cur;
                while ((cur = buffer.readLine()) != null) {
                    sb.append(cur);
                }
                //here's your whole response from your server if you provide any
                content = sb.toString();
            }
        } finally {
            if (stream != null) {
                stream.close();
            }
        }           

    } catch (Exception e) {
        e.printStackTrace();
    }