OI, estou fazendo um teste para requisicao de alguns dados usando j2me usando tomcat e servlet e gostarai de saber porque ela esta travando nesta linha http = (HttpConnection) Connector.open(url);
segue o codigo j2me
[code]
import javax.microedition.midlet.;
import javax.microedition.lcdui.;
import javax.microedition.io.;
import java.io.;
public class GetNpost extends MIDlet implements CommandListener
{
private Display display;
private Form fmMain;
Alert alError;
private Command cmGET;
private Command cmPOST;
private Command cmExit;
private TextField tfAcct;
private TextField tfPwd;
private StringItem siBalance;
private String errorMsg = null;
public GetNpost(){
display = Display .getDisplay(this);
cmGET = new Command("GET", Command.SCREEN, 2);
cmPOST = new Command("POST", Command.SCREEN, 3);
cmExit = new Command("Sair", Command.EXIT, 1);
tfAcct = new TextField("Conta : ", "", 5, TextField.NUMERIC);
tfPwd = new TextField("Password: ", "", 10, TextField.ANY | TextField.PASSWORD);
siBalance = new StringItem("Saldo: ", "");
fmMain = new Form("Informações da conta");
fmMain.addCommand(cmGET);
fmMain.addCommand(cmPOST);
fmMain.addCommand(cmExit);
fmMain.append(tfAcct);
fmMain.append(tfPwd);
fmMain.append(siBalance);
fmMain.setCommandListener(this);
}
public void startApp(){
display.setCurrent(fmMain);
}
public void pauseApp(){
}
public void destroy(boolean unconditional){
}
public void commandAction(Command c, Displayable d){
if (c == cmGET || c == cmPOST){
try{
if (c == cmGET)
lookupBalance_withGET();
else
lookupBalance_withPOST();
}catch (Exception e){
System.out.println("Msg: " + e.toString());
}
}else if (c == cmExit){
//destroyApp(false);
notifyDestroyed();
}
}
private void lookupBalance_withGET() throws IOException{
HttpConnection http = null;
InputStream iStrm = null;
boolean ret = false;
String url = "http://localhost:8080/Servlets/GetNpostServlet"
+ "?" +
"account=" + tfAcct.getString() + "&" +
"password=" + tfPwd.getString();
try{
http = (HttpConnection) Connector.open(url);
http.setRequestMethod(HttpConnection.GET);
iStrm = http.openInputStream();
ret = processServerResponse(http, iStrm);
}
finally
{
if (iStrm != null)
iStrm.close();
if (http != null){
http.close();
}
}
if ( ret = false)
showAlert(errorMsg);
}
private void lookupBalance_withPOST() throws IOException{
HttpConnection http = null;
InputStream iStrm = null;
OutputStream oStrm = null;
boolean ret = false;
String url = "http://localhost:8080/Servlets/GetNpostServlet";
try {
http = (HttpConnection) Connector.open(url);
oStrm = http.openOutputStream();
http.setRequestMethod(HttpConnection.POST);
http.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
byte data[] = ("account=" + tfAcct.getString()).getBytes();
oStrm.write(data);
data = ("&password=" + tfPwd.getString()).getBytes();
oStrm.write(data);
oStrm.flush();
iStrm = http.openInputStream();
ret = processServerResponse(http, iStrm);
}
finally{
if (iStrm!= null)
iStrm.close();
if (oStrm != null)
oStrm.close();
if (http != null)
http.close();
}
if (ret == false)
showAlert(errorMsg);
}
private boolean processServerResponse(HttpConnection http, InputStream iStrm)
throws IOException{
errorMsg = null;
if (http.getResponseCode() == HttpConnection.HTTP_OK) {
int length = (int) http.getLength();
String str;
if (length !=-1){
byte servletData[] = new byte[length];
iStrm.read(servletData);
str = new String(servletData);
}else {
ByteArrayOutputStream bStrm = new ByteArrayOutputStream();
int ch;
while ((ch = iStrm.read()) != -1)
bStrm.write(ch);
str = new String(bStrm.toByteArray());
bStrm.close();
}
siBalance.setText(str);
return true;
}else
errorMsg = new String(http.getResponseMessage());
return false;
}
private void showAlert(String msg){
alError = new Alert("Erro: ", msg, null, AlertType.ERROR);
alError.setTimeout(Alert.FOREVER);
display.setCurrent(alError, fmMain);
}
protected void destroyApp(boolean arg0) throws MIDletStateChangeException {
throw new UnsupportedOperationException("Not supported yet.");
}
}[/code]
segue o codigo da servlet
import java.util.*;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.sql.*;
public class GetNpostServlet extends HttpServlet {
protected void processRequest(HttpServletRequest req, HttpServletResponse res)
throws ServletException, IOException {
String acct = req.getParameter("account"),
pwd = req.getParameter("password");
String balance = accountLookup(acct, pwd);
if (balance == null){
res.sendError(res.SC_BAD_REQUEST, "Não foi possível localizar a conta!");
return;
}
res.setContentType("text/plain");
PrintWriter out = res.getWriter();
out.print(balance);
out.close();
}
protected void doPost(HttpServletRequest req, HttpServletResponse res)
throws ServletException, IOException {
String acct = req.getParameter("acct") ,
pwd = req.getParameter("pwd");
String balance = accountLookup(acct, pwd);
if (balance == null){
res.sendError(res.SC_BAD_REQUEST, "Não foi possível localizar a conta!");
return;
}
res.setContentType("text/plain");
PrintWriter out = res.getWriter();
out.print(balance);
out.close();
}
private String accountLookup(String acct, String pwd){
Connection con = null;
Statement st = null;
StringBuffer msgb = new StringBuffer("");
try {
Class.forName("com.mysql.jdbc.Driver");
String Host = "jdbc:mysql://localhost:3306/accinfo";
String User = "root";
String Password = "2785anma";
con = DriverManager.getConnection(Host, User, Password);
System.out.println("A conexão foi um sucesso");
Statement stmt = con.createStatement();
ResultSet rs = stmt.executeQuery("SELECT BALANCE FROM ACCTINFO WHERE ACCONT = "
+ acct + "AND PASSWORD = '" + pwd + "'");
if (rs.next())
return rs.getString(1);
else
return null;
} catch(ClassNotFoundException e) {
return e.toString();
} catch(SQLException e) {
return e.toString();
}
}
public String getServletInfo(){
return "Tentativa de integracao movel com servidor!";
}
}pelo que eu li tem que fazer uma threads porque esta aparecendo a seguinte mensagem “Is it OK to use airtime?”, se tiver que fazer como posso fazer?