2016-07-26 37 views
2

我有這樣的結構..如何從Web API接收此Json?

Cliente側< - >網絡API接待< - >網絡API返回 - >數據庫

所以,當我的網頁API返回給我的JSON,我不知道如何獲得結果。

我沒有顯示與數據庫的連接。

在Web Api Front上,行var data = response.Content.ReadAsStringAsync().Result;爲我提供了具有所有正確值的Json數組。但我不知道如何將它發送到客戶端上的ApiCall。

我必須把什麼回報?

[服務調用網絡API前]

public class ApiCall 
{ 
    static readonly string ApiUrl = "http://Localhost:1762/api/{0}/{1}?nomePesquisa={2}&nomeMae={3}&nomePai={4}&dtNasc={5}&nrg={6}&ncpf={7}"; 


    //buscar os dados com os parametros digitados 
    public async Task<T> GetResponse<T>(string controller, string method, string nomepesquisa, 
     string nomemae, string nomepai, string dtnasc, string nrg, string ncpf) where T : class 
    { 
     var client = new System.Net.Http.HttpClient(); 

     //Definide o Header de resultado para JSON, para evitar que seja retornado um HTML ou XML 
     client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json")); 

     var urllink = string.Format(ApiUrl, controller, method, nomepesquisa, nomemae, nomepai, dtnasc, nrg, ncpf); 
     var response = await client.GetAsync(urllink); 

     //Lê a string retornada 
     var JsonResult = response.Content.ReadAsStringAsync().Result; 

     if (typeof(T) == typeof(string)) 
      return null; 

     //Converte o resultado Json para uma Classe utilizando as Libs do Newtonsoft.Json 
     var rootobject = JsonConvert.DeserializeObject<T>(JsonResult); 
     return rootobject; 
    } 

} 

[網絡API前調用網絡API返回]

[HttpGet] 
[Route("Envolvidos")] 
public IEnumerable<Envolvido> GetEnvolv(string nomePesquisa, string nomeMae, string nomePai, string dtNasc 
    , string nRG, string nCPF) 
{ 

    DataSet lretorno = new DataSet(); 

    using (var client = new HttpClient()) 
    { 
     client.BaseAddress = new Uri("http://Localhost:1762/"); 
     client.DefaultRequestHeaders.Accept.Clear(); 
     client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json")); 

     // Usage 
     HttpResponseMessage response = client.GetAsync("api/nomes/Envolvidos?nomePesquisa="+nomePesquisa+"&nomeMae="+nomeMae+"&nomePai="+nomePai+"&dtNasc="+dtNasc+"&nrg="+nRG+"&ncpf="+nCPF+"").Result; 

     if (response.IsSuccessStatusCode) 
     { 
      var data = response.Content.ReadAsStringAsync().Result; 
      //Envolvido envolvidoResult = JsonConvert.DeserializeObject<Envolvido>(data); 
      return data.AsEnumerable().Select(row => new Envolvido 
     { 

     }); 

     } 
     else 
     { 
      Console.WriteLine("{0} ({1})", (int)response.StatusCode, response.ReasonPhrase); 
     } 


     //return WHATTTTT?? ; 

    } 

} 

[的WebAPI返回]

[HttpGet] 
[Route("Envolvidos")] 
public IEnumerable<Envolvido> GetEnvolv(string nomePesquisa, string nomeMae, string nomePai, string dtnasc 
    , string nRG, string nCPF) 
{ 

    DataSet lretorno = new DataSet(); 

    string connectionString = GetConnectionString(); 
    using (OracleConnection connection = new OracleConnection()) 
    { 
     connection.ConnectionString = connectionString; 

     OracleDataReader reader = null; 
     OracleCommand cmd = new OracleCommand(); 
     cmd.Connection = connection; 
     cmd = new OracleCommand("MOBILE.XAPIMANDADOMOBILE.BUSCAPOSSIVEISCANDIDATOSPF", connection); 
     cmd.CommandType = CommandType.StoredProcedure; 

     //variáveis entrada    
     cmd.Parameters.Add(new OracleParameter("ivnome",nomePesquisa)); 
     cmd.Parameters.Add(new OracleParameter("ivmae", nomeMae)); 
     cmd.Parameters.Add(new OracleParameter("ivpai", nomePai)); 
     cmd.Parameters.Add(new OracleParameter("ivdatanasc", dtnasc)); 
     cmd.Parameters.Add(new OracleParameter("ivrg", nRG)); 
     cmd.Parameters.Add(new OracleParameter("icpf", nCPF)); 
     //variáveis de saida   
     cmd.Parameters.Add(new OracleParameter("oretorno", OracleDbType.RefCursor)).Direction = ParameterDirection.Output; 
     cmd.Parameters.Add(new OracleParameter("qretorno", OracleDbType.RefCursor)).Direction = ParameterDirection.Output; 

     connection.Open(); 
     cmd.ExecuteNonQuery(); 

     reader = cmd.ExecuteReader(CommandBehavior.CloseConnection); 

     //CRIO A LISTA 
     lretorno.Load(reader, LoadOption.OverwriteChanges, "BUSCAPOSSIVEISCANDIDATOSPF"); 
     connection.Close(); 
     connection.Dispose(); 


     //CARREGO O DATASET E TRANSFORMO PARA IENUMERABLE E RETORNO SEUS VALORES PRO JSON 
     return lretorno.Tables[0].AsEnumerable().Select(row => new Envolvido 
     { 
      SUSPID = Convert.ToInt32(row["SUSPID"]), 
      IVNOME = Convert.ToString(row["SUSPNOME"]), 
      IVMAE = Convert.ToString(row["SUSPMAE"]), 
      IVPAI = Convert.ToString(row["SUSPPAI"]), 
      IVDATANASC = Convert.ToString(row["SUSPDATANASC"]).Replace(" 00:00:00", ""), 
      IVRG = Convert.ToString(row["RG"]), 
      ICPF = Convert.ToString(row["CPF"]), 
      MANDADO = Convert.ToInt16(row["TEMMANDADO"]), 
      OCORRENCIA = Convert.ToInt16(row["TEMOCORRENCIA"]), 

     }); 


    } 
} 
+0

你需要做任何更改Web API Front中的結果發送給客戶端之前? – Nkosi

+0

@Nkosi是的!使用此行返回data.AsEnumerable()。Select(row => new Envolvido { }); ,我得到所有值0或null,因爲這個選擇是錯誤的 –

+0

@Nkosi另外,我還有一個返回data.AsEnumerable()。選擇(行=>新Envolvido {SUSPID = Convert.ToInt32(「SUSPID」)) ,IVNOME = Convert.ToString(「SUSPNOME」),IVMAE = Convert.ToString(「SUSPMAE」),IVPAI = Convert.ToString(「SUSPPAI」),IVDATANASC = Convert.ToString(「SUSPDATANASC」)。Replace(「00: IVRG = Convert.ToString(「RG」),ICPF = Convert.ToString(「CPF」),MANDADO = Convert.ToInt16(「TEMMANDADO」),OCORRENCIA = Convert.ToInt16(「TEMOCORRENCIA 「),});但我得到一個錯誤System.FormatException被用戶代碼未處理HResult = -2146233033 –

回答

2

網頁API返回端正在返回IEnumerable<Envolvido>

當網絡API前端調用網絡API後端它只是需要將其反序列化的東西,是分配給IEnumerable<Envolvido>,無論是列表,收藏陣...等

//...other code removed for brevity 
if (response.IsSuccessStatusCode) 
{ 
    var data = response.Content.ReadAsAsync<List<Envolvido>>().Result; 
    return data; 
} 
//...other code removed for brevity 
+0

哦,我的GOSH!謝謝我的朋友......就像一個魅力! –

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