我尝试使用java GUI发送和接收JSON，但是，我一直收到一些错误（如，500，405，403），我使用http://localhost:8080/clienteWebService/test-resbeans.html他们我可以正常使用，发送和接收JSON与任何问题。
对于这个程序，我试图做我也得到这个错误：

Exception in thread "main" java.io.IOException: Server returned HTTP response code: 403 for URL: http://localhost:8080/ClienteWebService/webresources/Cadastro%20Cliente/Cliente/inserir
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at sun.net.www.protocol.http.HttpURLConnection$10.run(HttpURLConnection.java:1944)
at sun.net.www.protocol.http.HttpURLConnection$10.run(HttpURLConnection.java:1939)
at java.security.AccessController.doPrivileged(Native Method)

我不知道哪里出错了，我试图使用http://localhost:8080/clienteWebService/webresources/Cadastro%20Cliente/Cliente/inserir直接发出POST请求
并且我接收JSON，但是，如果我用jTextField获取信息，则不能正常运行或者根本不能运行。
这是代码：

public static void Inserir () throws Exception {
    ConsumirWs1 http = new ConsumirWs1();
    Gson g = new Gson();
    Cliente u = new Cliente();
    Type ClienteType = new TypeToken<Cliente>() {
    }.getType();
    
    u.setCad_pes_nome(InterfaceConsu.jTextFieldNOME.getText());
    u.setCad_pes_cpf(InterfaceConsu.jFormattedTextFieldCPF.getText());
    u.setCad_pes_apelido(InterfaceConsu.jTextFieldAPELIDO.getText());
    SimpleDateFormat formatter  = new SimpleDateFormat ("dd-MM-yyyy");
                    java.util.Date utilDate = null;
                    try {
                        utilDate = formatter.parse(jFormattedTextFieldDATA.getText());
                    } catch (ParseException ex) {
                        Logger.getLogger(InterfaceConsu.class.getName()).log(Level.SEVERE, null, ex);
                    }
                    java.sql.Date sqlDate = new java.sql.Date(utilDate.getTime());
    u.setCad_pes_data(sqlDate);
    
    String json = g.toJson(u, ClienteType);
    String url = "http://localhost:8080/clienteWebService/webresources/Cadastro%20Cliente/Cliente/inserir?";
    
    http.sendPost(url, json, "POST");
   
}

然后将代码与Web服务一起发送

private void sendPost(String url, String urlParameters, 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 = "sn=C02G8416DRJM&cn=&locale=&caller=&num=12345";
    // Send post request
    con.setDoOutput(true);
    try (DataOutputStream wr = new DataOutputStream(con.getOutputStream())) {
        wr.writeBytes(urlParameters);
        wr.flush();
    }
    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);
    StringBuffer response;
    try (BufferedReader in = new BufferedReader(
            new InputStreamReader(con.getInputStream()))) {
        String inputLine;
        response = new StringBuffer();
        while ((inputLine = in.readLine()) != null) {
            response.append(inputLine);
        }
    }
    //print result
    System.out.println(response.toString());
}

如果我尝试GET，我会收到错误java.net.ProtocolException: Invalid HTTP method: