package ppt_gen;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import org.apache.poi.xslf.usermodel.XMLSlideShow;
public class CreatePresentation {
public static void main(String args[]) throws IOException{
//creating a new empty slide show
XMLSlideShow ppt = new XMLSlideShow();
//creating an FileOutputStream object
File file =new File("example1.pptx");
FileOutputStream out = new FileOutputStream(file);
//saving the changes to a file
ppt.write(out);
System.out.println("Presentation created successfully");
out.close();
}
}
What is the cause behind this exception??
Exception in thread "main" java.lang.RuntimeException: Missing resource 'empty.pptx'
at org.apache.poi.xslf.usermodel.XMLSlideShow.empty(XMLSlideShow.java:98)
at org.apache.poi.xslf.usermodel.XMLSlideShow.(XMLSlideShow.java:73)
at ppt_gen.CreatePresentation.main(CreatePresentation.java:12)
Java Result: 1
BUILD SUCCESSFUL (total time: 0 seconds)
Related
Since i am new to Mockito and AEM model java. I have a gone through some docs and wrote my first Mockito file for AEM Model java. In my code i've not see any errors, but while running i am not getting success and can't complete the code coverage 100%. Can anyone correct/help me to fix my code[given sample java with respective mockito file]
Java File:
import java.util.ArrayList;
import java.util.List;
import javax.annotation.PostConstruct;
import javax.inject.Inject;
import org.apache.sling.api.SlingHttpServletRequest;
import org.apache.sling.api.resource.LoginException;
import org.apache.sling.api.resource.Resource;
import org.apache.sling.api.resource.ValueMap;
import org.apache.sling.models.annotations.Model;
import org.apache.sling.models.annotations.injectorspecific.SlingObject;
import org.json.JSONException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.abc.cc.ddd.ResourceResolverService;
import com.abc.cc.ddd.services.models.bean.Accordion;
#Model(adaptables = SlingHttpServletRequest.class)
public class AccordionModel {
private final static Logger log = LoggerFactory.getLogger(AccordionModel.class);
#SlingObject
private SlingHttpServletRequest request;
#Inject
public ResourceResolverService resolverService;
private Resource resource;
public List < Accordion > accordionList = new ArrayList < Accordion > ();
#PostConstruct
protected void init() throws LoginException, JSONException {
log.info("AccordionModel init method Start");
resource = request.getResource();
final ValueMap configurationOptionProperties = resource.getValueMap();
log.debug("iconfigurationOptionProperties is " + configurationOptionProperties);
String count = configurationOptionProperties.get("count", String.class);
if (count != null) {
for (int i = 1; i <= Integer.valueOf(count); i++) {
Accordion accordion = new Accordion();
String title = configurationOptionProperties.get("title" + i, String.class);
String rte = configurationOptionProperties.get("rte" + i, String.class);
accordion.setTitle(title);
accordion.setRte(rte);
accordionList.add(accordion);
}
}
log.info("AccordionModel init method End");
}
public List < Accordion > getAccordionList() {
return accordionList;
}
}
Mockito code
import static org.junit.Assert.assertEquals;
import static org.mockito.Mockito.when;
import java.util.ArrayList;
import java.util.List;
import org.apache.sling.api.SlingHttpServletRequest;
import org.apache.sling.api.resource.LoginException;
import org.apache.sling.api.resource.Resource;
import org.apache.sling.api.resource.ValueMap;
import org.json.JSONException;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.InjectMocks;
import org.mockito.Mock;
import org.mockito.junit.MockitoJUnitRunner;
import com.abc.cc.ddd.ResourceResolverService;
import com.abc.cc.ddd.services.models.bean.Accordion;
#RunWith(MockitoJUnitRunner.class)
public class AccordionModelTest {
#InjectMocks
private AccordionModel accordionModel;
#Mock
Resource resource;
#Mock
SlingHttpServletRequest request;
#Mock
ResourceResolverService resourceResolverService;
#Mock
ValueMap valuemap;
public List < Accordion > accordionList = new ArrayList < Accordion > ();
String count = "6";
//max count, based on this count loop execute and get/set into the list
#Before
public void setUp() throws Exception {
when(request.getResource()).thenReturn(resource);
when(resource.getValueMap()).thenReturn(valuemap);
}
#Test
public void shouldReturnNullWhenPropertyIsNull() throws LoginException, JSONException {
when(valuemap.get("count", String.class)).thenReturn(null);
accordionModel.init();
assertEquals(accordionModel.getAccordionList(), null);
}
#Test
public void shouldReturnWhenPropertyNotNull() throws LoginException, JSONException {
when(valuemap.get("count", String.class)).thenReturn("count");
accordionModel.init();
assertEquals(accordionModel.getAccordionList(), count);
}
}
Errors in program its showing line--> accordionModel.init();
java.lang.NumberFormatException: For input string: "count"
at java.lang.NumberFormatException.forInputString(Unknown Source)
at java.lang.Integer.parseInt(Unknown Source)
at java.lang.Integer.valueOf(Unknown Source)
at com..services.sling.models.AccordionModel.init(AccordionModel.java:44) at
com..services.sling.models.AccordionModelTest.
shouldReturnWhenPropertyNotNull(AccordionModelTest.java:55)
java.lang.AssertionError: expected:<[]> but was:<null>
at org.junit.Assert.fail(Assert.java:88)
at org.junit.Assert.failNotEquals(Assert.java:834)
at org.junit.Assert.assertEquals(Assert.java:118)
at org.junit.Assert.assertEquals(Assert.java:144)
at com..services.sling.models.AccordionModelTest.
shouldReturnNullWhenPropertyIsNull(AccordionModelTest.java:53)
java.lang.AssertionError: expected:<[]> but was:<null>
If you return null your list is empty. So adjust your test.
Consider renaming the method name as well.
If thats not what you want, you'll need to change your implementation.
#Test
public void shouldReturnNullWhenPropertyIsNull() throws LoginException, JSONException {
when(valuemap.get("count", String.class)).thenReturn(null);
accordionModel.init();
assertTrue(accordionModel.getAccordionList().isEmpty());
}
java.lang.NumberFormatException: For input string: "count"
"count" can not be converted into an Integer. Try using your count variable ("6") instead.
You should check the content of the list, for now I adjusted it to check that the list has the correct size.
#Test
public void shouldReturnWhenPropertyNotNull() throws LoginException, JSONException {
when(valuemap.get("count", String.class)).thenReturn(count);
accordionModel.init();
assertEquals(Integer.valueOf(count), accordionModel.getAccordionList().size());
}
Note that generally the parameter order for assert's should be expected vs actual.
I am setting a web application with embedded jetty and jersey .As i am fairly new with concepts, it is difficult to load a sample webpage index.html. When i target it as localhost:8989/myServlet i see the code flow through my servlet . But request dispatcher always returns null.
Please let me know with this:
Main class:
import org.eclipse.jetty.server.Server;
import org.eclipse.jetty.servlet.ServletContextHandler;
import org.eclipse.jetty.servlet.ServletHandler;
import org.eclipse.jetty.servlet.ServletHolder;
public class MainApp {
public static void main(String[] args) throws Exception {
ServletContextHandler context = new ServletContextHandler(ServletContextHandler.SESSIONS);
context.setContextPath("/");
Server jettyServer = new Server(8989);
jettyServer.setHandler(context);
ServletHandler handler =new ServletHandler();
handler.addServletWithMapping(MyServletHandler.class,"/myServlet");
jettyServer.setHandler(handler);
ServletHolder jerseyServlet = context.addServlet(
org.glassfish.jersey.servlet.ServletContainer.class, "/*");
jerseyServlet.setInitOrder(0);
jerseyServlet.setInitParameter(
"jersey.config.server.provider.classnames",
Entry.class.getCanonicalName());
try {
jettyServer.start();
jettyServer.join();
} finally {
jettyServer.destroy();
}
}
}
Myservlet class:
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
public class MyServletHandler extends HttpServlet {
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
System.out.println("Control is in servlet");
RequestDispatcher requestDispatcher = request.getRequestDispatcher("index.html"); // this returns null. hence i am unable to request dispatch to view the html webpage.
}
}
I use Maven to build the application and i have placed index.html in src/main/resources directory
This works, but you'll have to properly setup the ServletContext so that the request.getRequestDispatcher() can do something.
For starters, your ServletContextHandler MUST have a Resource Base setup.
You'll have to setup a DefaultServlet so that the request dispatcher can be returned properly.
You'll also have to use embedded-jetty properly, don't use ServletHandler directly like that. Use the ServletHolder if you must, but otherwise just use the ServletContextHandler directly.
Here's an example of this behavior.
Run with a System Property of baseResource pointing to a directory where you have a index.html.
package jetty.dispatching;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URI;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.eclipse.jetty.server.Server;
import org.eclipse.jetty.server.handler.DefaultHandler;
import org.eclipse.jetty.server.handler.HandlerList;
import org.eclipse.jetty.servlet.DefaultServlet;
import org.eclipse.jetty.servlet.ServletContextHandler;
import org.eclipse.jetty.servlet.ServletHolder;
import org.eclipse.jetty.util.IO;
import org.eclipse.jetty.util.resource.Resource;
import static java.nio.charset.StandardCharsets.UTF_8;
public class DispatchingToDefaultServletDemo
{
public static void main(String[] args) throws Exception
{
DispatchingToDefaultServletDemo demo = new DispatchingToDefaultServletDemo();
try
{
demo.startServer();
demo.makeRequests();
}
finally
{
demo.stopServer();
}
}
private Server server;
public void startServer() throws Exception
{
server = new Server(8989);
ServletContextHandler context = new ServletContextHandler(ServletContextHandler.SESSIONS);
context.setContextPath("/");
// Must have Resource Base for proper ServletContext (even if it points to an empty URI directory in a JAR file)
context.setBaseResource(getBaseResource());
// Don't use ServletHandler directly!
context.addServlet(MyServletHandler.class, "/myServlet");
// Add DefaultServlet last on ServletContextHandler to be able to serve content from resource base.
// It must be named "default" (per servlet spec)
ServletHolder defaultHolder = new ServletHolder("default", DefaultServlet.class);
defaultHolder.setInitParameter("dirAllowed", "true");
context.addServlet(defaultHolder, "/"); // this is the default url-pattern
HandlerList handlers = new HandlerList();
handlers.addHandler(context);
handlers.addHandler(new DefaultHandler()); // always last in handler tree
server.setHandler(handlers);
server.start();
}
public Resource getBaseResource() throws IOException
{
String baseResourceLocation = System.getProperty("baseResource");
if (baseResourceLocation == null)
{
baseResourceLocation = System.getProperty("user.dir");
}
Resource resource = Resource.newResource(baseResourceLocation);
System.out.println("Base Resource is " + resource);
return resource;
}
private void stopServer() throws Exception
{
server.stop(); // use .stop() NOT .destroy()
}
private void makeRequests()
{
performGET("/myServlet");
performGET("/");
}
private void performGET(String requestPath)
{
try
{
URI uri = server.getURI().resolve(requestPath);
System.out.println("Requesting GET on " + uri);
HttpURLConnection http = (HttpURLConnection) uri.toURL().openConnection();
System.out.println(" Response Status code = " + http.getResponseCode());
try (InputStream in = http.getInputStream())
{
System.out.println(" Response Body: " + IO.toString(in, UTF_8));
}
}
catch (IOException e)
{
e.printStackTrace();
}
}
public static class MyServletHandler extends HttpServlet
{
#Override
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
{
RequestDispatcher requestDispatcher = request.getRequestDispatcher("/index.html");
System.out.println("request Dispatcher = " + requestDispatcher);
requestDispatcher.forward(request, response);
}
}
}
The output ...
$ java -DbaseResource=/home/joakim/code/jetty/bases/listing-base/rez/welcomish/ -classpath <..snip..> jetty.dispatching.DispatchingToDefaultServletDemo
2019-04-18 15:15:15.595:INFO::main: Logging initialized #180ms to org.eclipse.jetty.util.log.StdErrLog
Base Resource is file:///home/joakim/code/jetty/bases/listing-base/rez/welcomish/
2019-04-18 15:15:15.678:INFO:oejs.Server:main: jetty-9.4.15.v20190215; built: 2019-02-15T16:53:49.381Z; git: eb70b240169fcf1abbd86af36482d1c49826fa0b; jvm 1.8.0_192-b12
2019-04-18 15:15:15.725:INFO:oejs.session:main: DefaultSessionIdManager workerName=node0
2019-04-18 15:15:15.726:INFO:oejs.session:main: No SessionScavenger set, using defaults
2019-04-18 15:15:15.727:INFO:oejs.session:main: node0 Scavenging every 660000ms
2019-04-18 15:15:15.736:INFO:oejsh.ContextHandler:main: Started o.e.j.s.ServletContextHandler#482f8f11{/,file:///home/joakim/code/jetty/bases/listing-base/rez/welcomish/,AVAILABLE}
2019-04-18 15:15:15.747:INFO:oejs.AbstractConnector:main: Started ServerConnector#3ffc5af1{HTTP/1.1,[http/1.1]}{0.0.0.0:8989}
2019-04-18 15:15:15.747:INFO:oejs.Server:main: Started #333ms
Requesting GET on http://127.0.1.1:8989/myServlet
request Dispatcher = Dispatcher#0x5d8c6ff2{null,/index.html}
Response Status code = 200
Response Body: <h1>My welcomish HTML</h1>
Requesting GET on http://127.0.1.1:8989/
Response Status code = 200
Response Body: <h1>My welcomish HTML</h1>
2019-04-18 15:15:15.827:INFO:oejs.AbstractConnector:main: Stopped ServerConnector#3ffc5af1{HTTP/1.1,[http/1.1]}{0.0.0.0:8989}
2019-04-18 15:15:15.827:INFO:oejs.session:main: node0 Stopped scavenging
2019-04-18 15:15:15.829:INFO:oejsh.ContextHandler:main: Stopped o.e.j.s.ServletContextHandler#482f8f11{/,file:///home/joakim/code/jetty/bases/listing-base/rez/welcomish/,UNAVAILABLE}
Process finished with exit code 0
The code was running completely fine until yesterday. Now, when I am trying to run any test case, Selenium (using Java) throws java.lang.NullPointerException on the homepage itself. Below is a simple test case which is failing due to the error.
Below is my Test class which is calling the constructor of TestBase class and then, initializing the driver object. When the control goes into homepage.clickSearchLink() method, the test ends and error comes.
package com.ss.qa.testcases;
import org.testng.Assert;
import org.testng.annotations.AfterMethod;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.Test;
import org.openqa.selenium.chrome.*;
import com.ss.qa.base.TestBase;
import com.ss.qa.pages.HomePage;
import com.ss.qa.pages.SearchPage;
public class SearchPageTest extends TestBase{
HomePage homepage;
SearchPage searchpage;
SearchPageTest(){
super();
}
#BeforeMethod
public void setUp(){
initialization();
homepage = new HomePage();
searchpage = homepage.clickSearchLink();
}
#Test
public void verifyResultCount() {
int count = searchpage.countResults("a");
Assert.assertEquals(count, 15);
}
#AfterMethod
public void tearDown() {
driver.quit();
}
}
Below is my TestBase class which is calling the constructor of Test Base class and initializing the driver object
package com.ss.qa.base;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.sql.Driver;
import java.util.Properties;
import java.util.concurrent.TimeUnit;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeDriver;
import org.openqa.selenium.chrome.ChromeOptions.*;
import org.openqa.selenium.firefox.FirefoxDriver;
import org.openqa.selenium.support.events.EventFiringWebDriver;
import com.ss.qa.util.TestUtil;
import com.ss.qa.util.WebEventListener;
public class TestBase {
public static WebDriver driver = null;
public static Properties prop;
public static EventFiringWebDriver e_driver;
public static WebEventListener eventListener;
public TestBase(){
try {
prop = new Properties();
FileInputStream ip = new FileInputStream("D:\\Users\\eclipse-
workspace\\src\\main\\java\\com\\ss\\qa\\config\\config.properties");
prop.load(ip);
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
public static void initialization() {
String browserName = prop.getProperty("browser");
if (browserName.equalsIgnoreCase("chrome")) {
System.setProperty("webdriver.chrome.driver", "C:\\Users\\Downloads\\"chromedriver_win32\\chromedriver.exe");
driver = new ChromeDriver();
System.out.println("driver=" + driver);
}
else if (browserName.equalsIgnoreCase("FF")) {
System.setProperty("webdriver.gecko.driver", "C:\\Users\\Downloads\\geckodriver-v0.21.0-win64\\geckodriver.exe");
driver = new FirefoxDriver();
}
e_driver = new EventFiringWebDriver(driver);
eventListener = new WebEventListener();
e_driver.register(eventListener);
driver = e_driver;
driver.manage().window().maximize();
driver.manage().deleteAllCookies();
driver.manage().timeouts().pageLoadTimeout(TestUtil.PAGE_LOAD_TIMEOUT , TimeUnit.SECONDS);
driver.manage().timeouts().implicitlyWait(TestUtil.IMPLICIT_WAIT , TimeUnit.SECONDS);
driver.get(prop.getProperty("url"));
}
}
<!-- Method in Event Listener class which is showing in error -->
public void afterFindBy(By arg0, WebElement arg1, WebDriver arg2) {
System.out.println("Find happened on " + arg1.toString() + " Using method " + arg0.toString());
}
ERROR LOG :
[RemoteTestNG] detected TestNG version 6.11.0 Starting ChromeDriver
2.41.578737 (49da6702b16031c40d63e5618de03a32ff6c197e) on port 21677 Only local connections are allowed. log4j:WARN No appenders could be
found for logger (org.apache.http.client.protocol.RequestAddCookies).
log4j:WARN Please initialize the log4j system properly. log4j:WARN See
http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
Sep 09, 2018 9:10:58 AM org.openqa.selenium.remote.ProtocolHandshake
createSession INFO: Detected dialect: OSS driver=ChromeDriver: chrome
on XP (ac62d0828d89443b9bedefa67a824225) Inside the afterNavigateTo to
https://www.ss.com/en FAILED CONFIGURATION: #BeforeMethod setUp
java.lang.NullPointerException at
com.ss.qa.util.WebEventListener.afterFindBy(WebEventListener.java:31)
at
java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native
Method) at
java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:564) at
org.openqa.selenium.support.events.EventFiringWebDriver$1.invoke(EventFiringWebDriver.java:81)
at com.sun.proxy.$Proxy9.afterFindBy(Unknown Source) at
org.openqa.selenium.support.events.EventFiringWebDriver.findElement(EventFiringWebDriver.java:189)
at
org.openqa.selenium.support.pagefactory.DefaultElementLocator.findElement(DefaultElementLocator.java:69)
at
org.openqa.selenium.support.pagefactory.internal.LocatingElementHandler.invoke(LocatingElementHandler.java:38)
at com.sun.proxy.$Proxy12.isDisplayed(Unknown Source) at
com.ss.qa.pages.HomePage.clickSearchLink(HomePage.java:67) at
com.ss.qa.testcases.SearchPageTest.setUp(SearchPageTest.java:25) at
java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native
Method) at
java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:564) at
org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:108)
at
org.testng.internal.Invoker.invokeConfigurationMethod(Invoker.java:523)
at org.testng.internal.Invoker.invokeConfigurations(Invoker.java:224)
at org.testng.internal.Invoker.invokeMethod(Invoker.java:599) at
org.testng.internal.Invoker.invokeTestMethod(Invoker.java:869) at
org.testng.internal.Invoker.invokeTestMethods(Invoker.java:1193) at
org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:126)
at
org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:109)
at org.testng.TestRunner.privateRun(TestRunner.java:744) at
org.testng.TestRunner.run(TestRunner.java:602) at
org.testng.SuiteRunner.runTest(SuiteRunner.java:380) at
org.testng.SuiteRunner.runSequentially(SuiteRunner.java:375) at
org.testng.SuiteRunner.privateRun(SuiteRunner.java:340) at
org.testng.SuiteRunner.run(SuiteRunner.java:289) at
org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52) at
org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:86) at
org.testng.TestNG.runSuitesSequentially(TestNG.java:1301) at
org.testng.TestNG.runSuitesLocally(TestNG.java:1226) at
org.testng.TestNG.runSuites(TestNG.java:1144) at
org.testng.TestNG.run(TestNG.java:1115) at
org.testng.remote.AbstractRemoteTestNG.run(AbstractRemoteTestNG.java:114)
at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:251)
at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:77)
Kindly suggest.
WebEventListener.java:31: keep the null check, one of the elements you are using is throwing a null pointer exception.
If you can post the printed content of the WebEventListener.java on line 31, then we can better examine the problem. To do that, change this line:
public void afterFindBy(By arg0, WebElement arg1, WebDriver arg2) {
System.out.println("Find happened on " + arg1 + " Using method " + arg0);
}
As per you comment " When the control goes into homepage.clickSearchLink() method, the test ends and error comes."
check whether this method "homepage.clickSearchLink()" is returning searchpage instance.
the method should be
~public Searchpage clickSearchLink(){
//click on element to get search page
//Also check whether element is present on page or not.
return new Searchpage();
}~
I am trying to send json object through volley in android studio to a server (mvc spring project in eclipse + tomcat is listening) but the app crashes. I'm new to the volley library. Also, the json object is made up of the data gotten from user inputs in combo box and textviews.
Login Activity:
package com.example.mujtaba.quizzer;
import android.app.ProgressDialog;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.Spinner;
import android.widget.TextView;
import com.android.volley.Cache;
import com.android.volley.Network;
import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.VolleyLog;
import com.android.volley.toolbox.BasicNetwork;
import com.android.volley.toolbox.DiskBasedCache;
import com.android.volley.toolbox.HurlStack;
import com.android.volley.toolbox.StringRequest;
import com.example.mujtaba.quizzer.Activity.QuizMaking;
import com.example.mujtaba.quizzer.Activity.QuizTaking;
import org.w3c.dom.Text;
import java.util.HashMap;
import java.util.Map;
public class Login extends AppCompatActivity {
private Button button;
private TextView username;
private TextView password;
private Spinner role;
private String url = "http://localhost:8080/users/signup";
private RequestQueue queue;
private ProgressDialog progress;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
username=(TextView) findViewById(R.id.username);
password=(TextView) findViewById(R.id.password);
button=(Button) findViewById(R.id.button);
role = (Spinner) findViewById(R.id.role);
// Create an ArrayAdapter using the string array and a default spinner layout
ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(this,
R.array.role_spinner, android.R.layout.simple_spinner_item);
// Specify the layout to use when the list of choices appears
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
// Apply the adapter to the spinner
role.setAdapter(adapter);
}
public void Quiz(View v) { //select a new activity on the basis of role
// Instantiate the cache
Cache cache = new DiskBasedCache(getCacheDir(), 1024 * 1024); // 1MB cap
// Set up the network to use HttpURLConnection as the HTTP client.
Network network = new BasicNetwork(new HurlStack());
// Instantiate the RequestQueue with the cache and network.
queue = new RequestQueue(cache, network);
// Start the queue
queue.start();
StringRequest MyStringRequest = new StringRequest(Request.Method.POST, url, new Response.Listener<String>() {
#Override
public void onResponse(String response) {
//This code is executed if the server responds, whether or not the response contains data.
//The String 'response' contains the server's response.
}
}, new Response.ErrorListener() { //Create an error listener to handle errors appropriately.
#Override
public void onErrorResponse(VolleyError error) {
//This code is executed if there is an error.
}
}) {
protected Map<String, String> getParams() {
Map<String, String> MyData = new HashMap<String,String>();
MyData.put("Username", username.getText().toString() ); //Add the data you'd like to send to the server.
MyData.put("Password",password.getText().toString());
MyData.put("Role",role.getSelectedItem().toString());
MyData.put("Score","0");
return MyData;
}
};
queue.add(MyStringRequest);
}
}
Logcat error:
*3430-3440/com.android.dialer E/StrictMode: A resource was acquired at attached stack trace but never released. See java.io.Closeable for information on avoiding resource leaks.
java.lang.Throwable: Explicit termination method 'close' not called
at dalvik.system.CloseGuard.open(CloseGuard.java:184)
at android.os.ParcelFileDescriptor.<init>(ParcelFileDescriptor.java:180)
at android.os.ParcelFileDescriptor$1.createFromParcel(ParcelFileDescriptor.java:916)
at android.os.ParcelFileDescriptor$1.createFromParcel(ParcelFileDescriptor.java:906)
at android.app.IBackupAgent$Stub.onTransact(IBackupAgent.java:57)
at android.os.Binder.execTransact(Binder.java:446)*
I've been trying to figure the code out for quite a while now, however have had no success. Everytime the App crashes by throwing some random exception.
I learnt this code off a tutorial on youtube and despite that, the code doesn't work for me.
import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.AsyncTask;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
import org.w3c.dom.Text;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.MalformedURLException;
import java.net.URL;
import java.nio.Buffer;
import javax.net.ssl.HttpsURLConnection;
public class MainActivity extends AppCompatActivity {
Button b1;
TextView t1;
private Context context;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
b1=(Button)findViewById(R.id.bthhit);
t1=(TextView)findViewById(R.id.tvJSONitem);
b1.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
new JSONTask().execute("http://jsonparsing.parseapp.com/jsonData/moviesDemoItem.txt");
}
});
}
public class JSONTask extends AsyncTask<String,String,String>{
HttpsURLConnection connection = null;
BufferedReader reader = null;
#Override
protected String doInBackground(String... params) {
try {
URL url=new URL(params[0]);
connection= (HttpsURLConnection)url.openConnection();
connection.connect();
InputStream stream= connection.getInputStream();
reader = new BufferedReader(new InputStreamReader(stream));
String line;
StringBuffer buffer= new StringBuffer();
while((line=reader.readLine())!=null){
buffer.append(line);
}
return buffer.toString();
} catch (IOException e) {
e.printStackTrace();
} finally {
if(connection!=null) {
connection.disconnect();
}
try {
if(reader!=null){
reader.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}
return null;
}
#Override
protected void onPostExecute(String result) {
super.onPostExecute(result);
t1.setText(result);
}
}
}
Logcat shows this:
01-05 00:46:09.018 5573-5580/? E/art: Failed sending reply to debugger: Broken pipe
01-05 00:46:17.852 5573-5706/com.example.test.jsonparser E/AndroidRuntime: FATAL EXCEPTION: AsyncTask #1
Process: com.example.test.jsonparser, PID: 5573
java.lang.RuntimeException: An error occurred while executing doInBackground()
at android.os.AsyncTask$3.done(AsyncTask.java:309)
at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:354)
at java.util.concurrent.FutureTask.setException(FutureTask.java:223)
at java.util.concurrent.FutureTask.run(FutureTask.java:242)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:234)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)
at java.lang.Thread.run(Thread.java:818)
Caused by: java.lang.ClassCastException: com.android.okhttp.internal.huc.HttpURLConnectionImpl cannot be cast to javax.net.ssl.HttpsURLConnection
at com.example.test.jsonparser.MainActivity$JSONTask.doInBackground(MainActivity.java:58)
at com.example.test.jsonparser.MainActivity$JSONTask.doInBackground(MainActivity.java:49)
at android.os.AsyncTask$2.call(AsyncTask.java:295)
at java.util.concurrent.FutureTask.run(FutureTask.java:237)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:234)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)
at java.lang.Thread.run(Thread.java:818)
01-05 00:46:19.104 5573-5587/com.example.test.jsonparser E/Surface: getSlotFromBufferLocked: unknown buffer: 0xab792110
Please note that your URL protocol is HTTP and not HTTPS. Try either using a java.net.HttpURLConnection object or a "https://..." URL.
If some specific methods like .getResponseCode() or,... are not needed in your app, then you can use the generic URLConnection class as well, which will refrain from introducing this kind of exceptions, since it is the parent class for both HttpURLConnection and Https... classes somehow.