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Guilherme Costa Lopes

Erro WELD-000049 em jsf

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javax.servlet.ServletException: WELD-000049: Unable to invoke public void br.com.netsoft.desif.controler.endereco.PaisController.init() on br.com.netsoft.desif.controler.endereco.PaisController@71a1064d
    javax.faces.webapp.FacesServlet.service(FacesServlet.java:659)
    org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

 

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    • Por Leonardo Sandrini
      Eu criei duas classes customizadas de acordo com o que foi orientado por meu professor para fazer a requisição no servidor, mas estou recebendo um retorno 400 e não consigo descobrir a razão. Pesquisando, vi que pode ser algo relacionado ao cabeçalho, mas não sei como enviá-lo na minha requisição JSon customizada.
      Este é o código do meu do meu código customizado para requisição de JsonObject:
      package com.example.sandrini.pokeagenda; import com.android.volley.AuthFailureError; import com.android.volley.Response; import com.android.volley.RetryPolicy; import com.android.volley.toolbox.JsonObjectRequest; import org.json.JSONObject; import java.util.HashMap; import java.util.Map; public class CustomJSONObjectRequest extends JsonObjectRequest { public CustomJSONObjectRequest(int method, String url, JSONObject jsonRequest, Response.Listener<JSONObject> listener, Response.ErrorListener errorListener) { super(method, url, jsonRequest, listener, errorListener); } @Override public Map<String, String> getHeaders() throws AuthFailureError { HashMap<String, String> headers = new HashMap<>(); headers.put("Content-Type", "application/json; charset=utf-8"); return headers; } @Override public RetryPolicy getRetryPolicy() { return super.getRetryPolicy(); } } Este é o código da minha Request Queue:
      package com.example.sandrini.pokeagenda; import android.content.Context; import com.android.volley.Cache; import com.android.volley.Network; import com.android.volley.RequestQueue; import com.android.volley.toolbox.BasicNetwork; import com.android.volley.toolbox.DiskBasedCache; import com.android.volley.toolbox.HurlStack; public class CustomVolleyRequestQueue { private static CustomVolleyRequestQueue mInstance; private static Context mCtx; private RequestQueue mRequestQueue; private CustomVolleyRequestQueue(Context context) { //recebe o contexto da aplicação //Assim a fila dura o ciclo de vida do app mCtx = context; mRequestQueue = getRequestQueue(); } public static synchronized CustomVolleyRequestQueue getmInstance(Context context) { if (mInstance == null) { mInstance = new CustomVolleyRequestQueue(context); } //retorna uma instância da fila return mInstance; } public RequestQueue getRequestQueue() { if (mRequestQueue == null) { //Cache 10MB Cache cache = new DiskBasedCache(mCtx.getCacheDir(), 10 *1024); Network network = new BasicNetwork(new HurlStack()); mRequestQueue = new RequestQueue(cache, network); mRequestQueue.start(); } return mRequestQueue; } } Este é o código da Activity onde estou tentando fazer a requisição:
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      package acessorest; import com.google.gson.Gson; import com.google.gson.reflect.TypeToken; import java.io.BufferedReader; import java.io.DataOutputStream; import java.io.InputStreamReader; import java.lang.ProcessBuilder.Redirect.Type; import java.net.HttpURLConnection; import java.net.URL; import javax.net.ssl.HttpsURLConnection; /** * * @author marcelosiedler */ public class HttpExemplo { private final String USER_AGENT = "Mozilla/5.0"; public static void main(String[] args) throws Exception { HttpExemplo http = new HttpExemplo(); Gson gson = new Gson(); Pokemon pokemon = new Pokemon(); java.lang.reflect.Type pokemonType = new TypeToken<Pokemon>() { }.getType(); String chamadaWS = "http://192.168.25.6:8081/PokedexWS/webresources/pokews/poke/insert/trainer"; Trainer trainer = new Trainer(); trainer.setUsername("quadrado"); trainer.setEmail("quadrado"); trainer.setPassword("quadrado"); //System.out.println(gson.toJson(trainer)); String trainerToGson = gson.toJson(trainer); /*String trainerToGson = "{\"username\":"+ "\"" + trainer.getUsername()+ "\"" + "," + "\"email\":"+ "\"" + trainer.getEmail() + "\"" + "," + "\"password\":"+ "\"" + trainer.getPassword()+ "\"" + "}";*/ //System.out.println(trainerToGson); //String retorn = http.sendGet(chamadaWS, "DELETE"); //pokemon = gson.fromJson(json, pokemonType); //System.out.println(retorn); http.sendPost(chamadaWS,trainerToGson, "POST"); } // HTTP GET request private String sendGet(String url, String method) throws Exception { URL obj = new URL(url); HttpURLConnection con = (HttpURLConnection) obj.openConnection(); // optional default is GET con.setRequestMethod(method); //add request header con.setRequestProperty("User-Agent", USER_AGENT); int responseCode = con.getResponseCode(); System.out.println("Response Code : " + responseCode); BufferedReader in = new BufferedReader( new InputStreamReader(con.getInputStream())); String inputLine; StringBuffer response = new StringBuffer(); while ((inputLine = in.readLine()) != null) { response.append(inputLine); } in.close(); //print result System.out.println(response.toString()); return response.toString(); } // HTTP POST request private void sendPost(String url, String parameters, String method) throws Exception { URL obj = new URL(url); HttpURLConnection con = (HttpURLConnection) obj.openConnection(); //add reuqest header con.setRequestMethod(method); con.setRequestProperty("Content-Type", "application/json"); con.setRequestProperty("User-Agent", USER_AGENT); con.setRequestProperty("Accept-Language", "en-US,en;q=0.5"); String urlParameters = parameters; // Send post request con.setDoOutput(true); DataOutputStream wr = new DataOutputStream(con.getOutputStream()); wr.writeBytes(urlParameters); wr.flush(); wr.close(); int responseCode = con.getResponseCode(); System.out.println("\nSending 'POST' request to URL : " + url); System.out.println("Post parameters : " + urlParameters); System.out.println("Response Code : " + responseCode); BufferedReader in = new BufferedReader( new InputStreamReader(con.getInputStream())); String inputLine; StringBuffer response = new StringBuffer(); while ((inputLine = in.readLine()) != null) { response.append(inputLine); } in.close(); //print result System.out.println(response.toString()); } } android post volley singleton
    • Por Matheus Barbosa
      Estou com problemas ao compilar uma classe denominada Empregado que estende à classe Pessoa:
       
      package obj;
      public class Empregado extends Pessoa{
        private int codigoSetor;
        private double salBase, imposto;
        Empregado(String nome, String endereco, String telefone){
          super(nome, endereco, telefone);
        }
        public void setSetor(int codigoSetor){ this.codigoSetor = codigoSetor; }
        public void setSal(double salBase){ this.salBase = salBase; }
        public void setImposto(double imposto){ this.imposto = imposto; }
        public int getSetor(){ return codigoSetor; }
        public double getSal(){ return salBase; }
        public double getImposto(){ return imposto; }
        public double calculaSalario(){
          double novoSal;
          novoSal = salBase - (salBase*imposto/100);
          return novoSal;
        }
        @Override
        public void mostraDados(){
          System.out.println("O funcionario de nome: " + super.nome + ", endereço: " + super.endereco + " e telefone: " + super.telefone);
          System.out.println(", do setor: " + codigoSetor + " ira receber " + this.calculaSalario());
        }
      }
       
      package obj;
      public class Pessoa{
        private String nome, endereco, telefone;
        Pessoa(String nome, String endereco, String telefone){
          this.nome = nome;
          this.endereco = endereco;
          this.telefone = telefone;
        }
        public String getNome(){ return nome; }
        public String getEndereco(){ return endereco; }
        public String getTelefone(){ return telefone; }
        public void mostraDados(){
          System.out.println("Nome: " + nome + ", endereço: " + endereco + ", telefone: " + telefone);
        }
      }
       
      o codigo de erro do terminal linux é:
       
      Empregado.java:3: error: cannot find symbol
      public class Empregado extends Pessoa{
                                                                         ^
        symbol: class Pessoa
      Empregado.java:26: error: method does not override or implement a method from a supertype
        @Override
        ^
      Empregado.java:28: error: cannot find symbol
          System.out.println("O funcionario de nome: " + super.nome + ", endereço: " + super.endereco + " e telefone: " + super.telefone);
                                                                                                           ^
        symbol:   variable super
        location: class Empregado
      Empregado.java:28: error: cannot find symbol
          System.out.println("O funcionario de nome: " + super.nome + ", endereço: " + super.endereco + " e telefone: " + super.telefone);
                                                                                                          ^
        symbol:   variable super
        location: class Empregado
      Empregado.java:28: error: cannot find symbol
          System.out.println("O funcionario de nome: " + super.nome + ", endereço: " + super.endereco + " e telefone: " + super.telefone);
                                                                                                                                                                                                                                        ^
        symbol:   variable super
        location: class Empregado
      5 errors
       
      o meu programa esta em: /home/user/matheus/java/heranca/a/obj
       
       
       
       
       
    • Por paulaodaregulage
      Boa tarde Srs...
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      obgd
       
       
    • Por Fernando Bastos
      # Function: Probability Matrix   def city_probability (attractiveness, thau, city = 0, alpha = 1, beta = 2, city_list = []):   probability = pd.DataFrame(0, index = attractiveness.index, columns = ['atraction','probability','cumulative_probability'])   for i in range(0, probability.shape[0]):   if (i+1 not in city_list):   probability.iloc[i, 0] = (thau.iloc[i, city]**alpha)*(attractiveness.iloc[i, city]**beta)   for i in range(0, probability.shape[0]):   if (i+1 not in city_list and probability['atraction'].sum() != 0):   probability.iloc[i, 1] = probability.iloc[i, 0]/probability['atraction'].sum()   if (i == 0):   probability.iloc[i, 2] = probability.iloc[i, 1]   else:   probability.iloc[i, 2] = probability.iloc[i, 1] + probability.iloc[i - 1, 2]       if (len(city_list) > 0):   for i in range(0, len(city_list)):   probability.iloc[city_list-1, 2] = 0.0       return probability
       
      Obrigado pessoal!
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