I have the following cURL that I want to convert to java code:
curl -i -b 'JSESSIONID=ekl23l2-3321-1930-b889-kelwek23b8v9; Path=/; HttpOnly' http://127.0.0.1:8080/api/library
In the above call, JSESSIONID cookie is responsible for making sure that the server authenticates the call. I came up with the following Java code:
CloseableHttpClient httpClient = HttpClientBuilder.create().build();
HttpGet httpGet = new HttpGet("http://127.0.0.1:8080/api/library");
httpGet.addHeader("Set-Cookie","JSESSIONID=ekl23l2-3321-1930-b889-kelwek23b8v9; Path=/; HttpOnly");
HttpResponse httpResponse = httpClient.execute(httpGet);
BufferedReader rd = new BufferedReader(new InputStreamReader(httpResponse.getEntity().getContent()));
StringBuffer result = new StringBuffer();
String line = "";
while ((line = rd.readLine()) != null) {
result.append(line);
}
JSONObject o = new JSONObject(result.toString());
rd.close();
httpClient.close();
However, this doesn't work for me as the server complains of unauthorized access. This response happens when user is not authorized, which means that somehow the JSESSIONID is not getting properly setup. Can anyone comment if this is the proper way to translate the cURL to Java?
You are using Set-Cookie (that comes from server in response header) whereas it should be only Cookie: (goes from client in request header).
httpGet.addHeader("Cookie","JSESSIONID=ekl23l2-3321-1930-b889-kelwek23b8v9; Path=/; HttpOnly");
Related
I am trying to implement the MOT history API https://dvsa.github.io/mot-history-api-documentation/ and they give an example using CURL which works with the supplied api key successfully when using an online CURL tool.
I am trying to implement this in Android and realise I have to use something like HttpPost rather than CURL, this is my code:
//Tried with full URL and by adding the registration as a header.
//HttpPost httpPost = new HttpPost("https://beta.check-mot.service.gov.uk/trade/vehicles/mot-tests?registration=" + reg_selected);
HttpPost httpPost = new HttpPost("https://beta.check-mot.service.gov.uk/trade/vehicles/mot-tests");
httpPost.addHeader("Content-Type", "application/json");
httpPost.addHeader("Accept", "application/json+v6");
httpPost.addHeader("x-api-key", "abcdefgh123456");
httpPost.addHeader("registration", reg_selected);
StringEntity entity = new StringEntity(jsonObj.toString(), HTTP.UTF_8);
httpPost.setEntity(entity);
HttpClient client = new DefaultHttpClient();
try {
HttpResponse response = client.execute(httpPost);
if (response.getStatusLine().getStatusCode() == 200) {
InputStream inputStream = response.getEntity().getContent();
bufferedReader = new BufferedReader(new InputStreamReader(inputStream));
String readLine = bufferedReader.readLine();
String jsonStr = readLine;
JSONObject myJsonObj = new JSONObject(jsonStr);
}else if (response.getStatusLine().getStatusCode() == 400){
//Bad Request Invalid data in the request. Check your URL and parameters
error_text = "Bad Request";
}else if (response.getStatusLine().getStatusCode() == 403){
//Unauthorised – The x-api-key is missing or invalid in the header
error_text = "Authentication error"; //<<<< FAILS HERE 403
}
response.getStatusLine().getStatusCode() returns • "403 – Unauthorised – The x-api-key is missing or invalid in the header".
However the x-api-key that I use works correctly with the online CURL test so the actual key is correct but how I am adding it to my android code request must be invalid or similar.
Can anyone throw any light as to the correct way to convert the CURL into Android java so that the server does not return 403?
Thanks
It's easy to do with Jsoup:
// CREATE CONNECTION
Connection conn=Jsoup.connect("URL_GOES_HERE");
// ADD POST/FORM DATA
conn.data("KEY", "VALUE");
// ADD HEADERS HERE
conn.header("KEY", "VALUE");
// SET METHOD AS POST
conn.method(Connection.Method.POST);
// ACCEPT RESPONDING CONTENT TYPE
conn.ignoreContentType(true);
try
{
// GET RESPONSE
String response = conn.execute().body();
// USE RESPONSE HERE
// CREATE JSON OBJECT OR ANYTHING...
} catch(HttpStatusException e)
{
int status = e.getStatusCode();
// HANDLE HTTP ERROR HERE
} catch (IOException e)
{
// HANDLE IO ERRORS HERE
}
Ps: I guess you are confused with Header and Post Data. The key etc (Credentials) must be used as Post Data and Content Type etc as Header.
I have a java program which makes an http post request to a php script on my website. Here is the code. I am also using the new Apache HTTP Components API. Here is a link to the download -> http://hc.apache.org/downloads.cgi
public static void main(String args[]) throws ClientProtocolException, IOException
{
HttpPost httppost = new HttpPost("http://ftstoo.com/public_html/TheFinalTouchSecurity/Database/test.php");
List<BasicNameValuePair> parameters = new ArrayList<BasicNameValuePair>();
parameters.add(new BasicNameValuePair("name", "Cannon"));
httppost.setEntity(new UrlEncodedFormEntity(parameters));
HttpClient httpclient = new DefaultHttpClient();
HttpResponse httpResponse = httpclient.execute(httppost);
HttpEntity resEntity = httpResponse.getEntity();
// Get the HTTP Status Code
int statusCode = httpResponse.getStatusLine().getStatusCode();
// Get the contents of the response
InputStream in = resEntity.getContent();
BufferedReader reader = new BufferedReader(new InputStreamReader(in));
StringBuilder out = new StringBuilder();
String line;
while ((line = reader.readLine()) != null) {
out.append(line);
}
System.out.println(out.toString()); //Prints the string content read from input stream
reader.close();
}
}
My test.php file is located at http://ftstoo.com/public_html/TheFinalTouchSecurity/Database/test.php
Here is my php code.
<?php
$name = $_POST['name'];
echo "Success, . $name . !";
?>
The output I am getting when I run the java program is the html from a redirecting page on my website that says the page does not exist. I want the output to return a string that says "Success, Cannon!" I think there are probably several things I am doing wrong, but if someone could please give me a hand I would really appreciate it!
I have just started with neo4J and wanted to try the transactional cypher endpoint. I have my neo4J server running on localhost:7474/ and have inserted the movie data.
As stated in the documentation, I have to do a post request and include some parameters. Unfortunately I don't know how I have to include my query in the POST request. As far as I have understood it, I have to pass a JSON String.
private static String sendPost() throws Exception {
String url = "http://localhost:7474/db/data/transaction";
String statement ="[ { \"statement\" : \"MATCH (n:Person) RETURN n.name, n.born\"} ]";
HttpClient client = new DefaultHttpClient();
HttpPost post = new HttpPost(url);
List<NameValuePair> urlParameters = new ArrayList<NameValuePair>();
urlParameters.add(new BasicNameValuePair("Accept", "application/json; charset=UTF-8"));
urlParameters.add(new BasicNameValuePair("Content-Type", "application/json"));
urlParameters.add(new BasicNameValuePair("statements", statement));
post.setEntity(new UrlEncodedFormEntity(urlParameters));
HttpResponse response = client.execute(post);
StringBuilder builder = new StringBuilder();
builder.append("\nSending 'POST' request to URL : " + url+"<br>");
builder.append("Post parameters : " + post.getEntity()+"<br>");
builder.append("Response Code : " + response.getStatusLine().getStatusCode()+"<br>");
BufferedReader rd = new BufferedReader(
new InputStreamReader(response.getEntity().getContent()));
StringBuffer result = new StringBuffer();
result.append("<p>");
String line = "";
while ((line = rd.readLine()) != null) {
result.append(line+"\n");
}
result.append("</p>");
return builder.toString();
}
When I execute the code, I get the following output:
Sending 'POST' request to URL : http://localhost:7474/db/data/transaction
Post parameters : org.apache.http.client.entity.UrlEncodedFormEntity#76adb5f6
Response Code : 415
Can anyone help me on how I have to include my query in the POST request?
http://docs.neo4j.org/chunked/stable/rest-api-transactional.html
Looking at that, you can see the body of your POST request isn't what the server is expecting, i.e. you should be sending an entire JSON document, and not a k/v pair w/ "statements" as a key and your JSON Cypher query as the value. Remember you're sending JSON here, and not a URLEncoded body.
Also, it looks like you're setting the "Accept" and "Content-Type" k/v pairs as part of the POST body when they should, in fact, be part of the headers.
Also also, consider using the Cypher endpoint: http://docs.neo4j.org/chunked/stable/rest-api-cypher.html
HTH
I posted before but now I seem to actually see the problem, just having trouble fixing it.
I am trying to login to my schools grade website, maybe even make an app for it later, and when I use Chrome to inspect the cookies being created, I get all these,
Cookie:appName=chippewa_falls; tool=""; selection=""; districtID=1; endYear=2011; calendarID=0; permCalendarID=0; JSESSIONID=BE5AEF51EAA72975150FC2D0F77DDE13
But when my program prints all the cookies it received, I only get this
[version: 0][name: JSESSIONID][value: BC1BAA33BEB23DC27B7883AC24934A1D][domain: campus.chipfalls.k12.wi.us][path: /campus][expiry: null]
here is my code,
public static void main(String[] args) throws Exception {
DefaultHttpClient httpclient = new DefaultHttpClient();
HttpGet httpget = new HttpGet("https://campus.chipfalls.k12.wi.us/campus/portal/chippewa_falls.jsp");
httpget.addHeader("Referer", "http://cfsd.chipfalls.k12.wi.us//high/");
HttpResponse response = httpclient.execute(httpget);
HttpEntity entity = response.getEntity();
System.out.println("Login form get: " + response.getStatusLine());
if (entity != null) {
InputStream input = entity.getContent();
BufferedReader reader = new BufferedReader(new InputStreamReader(input));
String ln = "";
while((ln = reader.readLine()) != null) {
System.out.println("During Get - " + ln);
}
}
System.out.println("Initial set of cookies:");
List<Cookie> cookies = httpclient.getCookieStore().getCookies();
if (cookies.isEmpty()) {
System.out.println("None");
} else {
for (int i = 0; i < cookies.size(); i++) {
System.out.println("- " + cookies.get(i).toString());
}
}
Note that is just for the GET part of it,
Thanks for any help :)
Edit: I did forget to mention, it is using HTTPS, but to be honest, I don't know if that matters with apache client or not.
Those cookies must be getting set AFTER you login, not before. Looking at the output with wget of the URL you have above you see this:
Resolving campus.chipfalls.k12.wi.us... 205.213.253.11
Connecting to campus.chipfalls.k12.wi.us|205.213.253.11|:443... connected.
WARNING: Certificate verification error for campus.chipfalls.k12.wi.us: self signed certificate in certificate chain
HTTP request sent, awaiting response...
HTTP/1.1 200 OK
Server: Apache-Coyote/1.1
Set-Cookie: JSESSIONID=004549BDBCBDFB8289EBF859A4E743B2; Path=/campus; Secure
Content-Type: text/html;charset=utf-8
Content-Length: 6352
Date: Tue, 17 May 2011 06:00:38 GMT
Connection: keep-alive
Length: 6,352 (6.2K) [text/html]
which is the exact same thing you see. Until you actually log in you will not see the other cookies.
I'm trying out the twitter streaming api. I could succesfully filter tweets by using curl, as stated here:
curl -d #tracking http://stream.twitter.com/1/statuses/filter.json -u <user>:<pass>
where tracking is a plain file with the content:
track=Berlin
Now I tried to do the same thing in JavaSE, using Apache's HTTPComponents:
UsernamePasswordCredentials creds = new UsernamePasswordCredentials(<user>, <pass>);
DefaultHttpClient httpClient = new DefaultHttpClient();
httpClient.getCredentialsProvider().setCredentials(AuthScope.ANY, creds);
HttpPost httpPost = new HttpPost("http://stream.twitter.com/1/statuses/filter.json");
HttpParams params = new BasicHttpParams();
params = params.setParameter("track", "Berlin");
httpPost.setParams(params);
try {
HttpResponse httpResponse = httpClient.execute(httpPost);
HttpEntity entity = httpResponse.getEntity();
if (entity != null) {
InputStream instream = entity.getContent();
String t;
BufferedReader br = new BufferedReader(new InputStreamReader(instream));
while(true) {
t = br.readLine();
if(t != null) {
linkedQueue.offer(t);
}
}
}
} catch (IOException ioe) {
System.out.println(ioe.getMessage());
}
finally{
httpClient.getConnectionManager().shutdown();
}
When I run that, I get:
No filter parameters found. Expect at least one parameter: follow track
as a single entry in my linkedQueue. Seems the api wants the parameter in a different form, but cannot find any hint in the documentation. Can somebody share some experiences with the api or see any other problem with the code? Thanks!
EDIT
Putting the filter parameter into the params was a bad idea. As it's post data, it needs to be defined as an Entity before the request is being made:
StringEntity postEntity = new StringEntity("track=Berlin", "UTF-8");
postEntity.setContentType("application/x-www-form-urlencoded");
httpPost.setEntity(postEntity);
That's what I was doing wrong. Thanks Brian!
I suspect you need to post the data as the contents of your HTTP post. The man page for curl -d says:
(HTTP) Sends the specified data in a
POST request to the HTTP server, in
the same way that a browser does when
a user has filled in an HTML form and
presses the submit button. This will
cause curl to pass the data to the
server using the content-type
application/x-www-form-urlencoded.
so I believe you have to set that content type and put the contents of the tracking file in the body of your post.