Problemas com conexão

Programação Java
#1

Ae pessoal fiz um simples codigo pra conectar em um site, porem está dando o seguinte erro:

javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target

segue o codigo:

public void conecta(String username, String password){
		
		try{
			
			URL u = new URL( "https://201.33.18.251/claro_sp/cod_php/identifica.php");
			HttpURLConnection huc = (HttpURLConnection)u.openConnection();
			huc.setRequestMethod("POST");
			//huc.setInstanceFollowRedirects(true);
			huc.setDoOutput(true);
			
			String data = URLEncoder.encode("login", "UTF-8") + "=" + URLEncoder.encode(username, "UTF-8");
			data += "&" + URLEncoder.encode("senha","UTF-8") + "=" + URLEncoder.encode(password, "UTF-8");

			OutputStreamWriter wr = new OutputStreamWriter(huc.getOutputStream()); //nessa linha que dispara a exceção

			wr.write(data);
		        wr.flush();
			wr.close();
			
		}catch(Exception e){
			System.out.println(e.toString());
		}
    }

Grato
Lucas

#2

Você vai ter de cadastrar o certificado desse site no arquivo CACERTS.

#3

thingol, poderia me explicar melhor!

Grato,
Lucas

#4

Refiz o codigo, porem acontece outro erro:

java.io.IOException: HTTPS hostname wrong: should be <201.33.18.251>

no seguinte codigo:

    public void conecta(String username, String password){
        try{
            
            TrustManager[] trustAllCerts = new TrustManager[]{
                new X509TrustManager(){
                    public java.security.cert.X509Certificate[] getAcceptedIssuers(){
                        return null;
                    }
                    public void checkClientTrusted(java.security.cert.X509Certificate[] certs, String authType){}
                    public void checkServerTrusted(java.security.cert.X509Certificate[] certs, String authType){}
                }
            }; new Throwable("ERRO AO CRIAR CERTIFICADO");
            
            try {
                SSLContext sc = SSLContext.getInstance("SSL");
                sc.init(null, trustAllCerts, new java.security.SecureRandom());
                HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory());
            } catch (Exception e) {
                return ;
            }
            
            URL url = new URL( "https://201.33.18.251/claro_sp/cod_php/identifica.php");
            
            HttpsURLConnection conn =  (HttpsURLConnection) url.openConnection();
            conn.setDoOutput(true);
            String usuario = "login="+username+"&senha="+password;
            
            // Retrieve information from HTTPS: GET
            
            DataOutputStream wr = new DataOutputStream(conn.getOutputStream()); //Aqui acontece o erro
            wr.writeUTF(usuario);
            wr.flush();
            wr.close();
            
            System.out.println("conectou");
            
        }catch(Exception e){
            System.out.println(e.toString());
        }
    }
#5

cara… estou com o mesmo erro…

vc conseguiu arrumar isso??

#6