I have the code below, and my problem is that the response.status is 200 (is ok) and my response body is empty and it should return a json response. Is the problem the length maybe?:`
HttpPost post = new HttpPost("http://localhost:8080/rest/login");
httpClient = HttpClients.createDefault();
List<NameValuePair> formParams = new ArrayList<NameValuePair>();
NameValuePair pair = new BasicNameValuePair("token",token);
formParams.add(pair);
UrlEncodedFormEntity entity = new UrlEncodedFormEntity(formParams);
post.setEntity(entity);
HttpResponse response = httpClient.execute(post);
this.code = response.getStatusLine().getStatusCode();
InputStream body = response.getEntity().getContent();
BufferedReader rd = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));`
I had similar problem. In my case it was also very strange, that when url contained IP instead of hostname, it worked (I get the nonempty response).
However, setting netscape cookie specs helped in my case.
httpClientBuilder.setDefaultRequestConfig(RequestConfig.custom()
.setCookieSpec(CookieSpecs.NETSCAPE)
.build());
Related
I have used the CloseableHttpClient APi for a Post call and Basic Auth for authorisation
private CloseableHttpClient httpclient = HttpClients.createDefault();
HttpPost httppost = new HttpPost("https://example.com");
MyJson myJson = new MyJson(); //custom java object to be posted as Request Body
Gson gson = new Gson();
String param = gson.toJson(myJson);
StringEntity urlparam = new StringEntity(param);
String credentials = username + ":" + passwprd;
String base64Credentials = new String(Base64.getencoder().encode(credentials.getBytes()));
String authorizartionHeader = "Basic" + base64Credentials;
httppost.setHeader("Content-Type", "application/Json");
httppost.setHeader("Authorization", authorizartionHeader);
urlparam.setContentEncoding("UTF-8");
httppost.setEntity(urlparam);
httpclient.execute(httppost);
I am getting error
"Invalid UTF-8 middle byte"
I have encoded the JSON still the encoding is not working for other locales except English. How to encode the Post data.
I tried using the method
httppost.setEntity(new URLEncodedFormEntity(namevaluePair, "UTF-8")) but I don't have any Namevaluepair and if the add the Username-pswd in that then getting Null pointer response.
You should try to set everything as UTF-8
StringEntity urlparam = new StringEntity(param, StandardCharsets.UTF_8);
And add proper header
httppost.setHeader("Content-Type", "application/json;charset=UTF-8");
I have this code on my Android phone.
URI uri = new URI(url);
HttpPost post = new HttpPost(uri);
HttpClient client = new DefaultHttpClient();
HttpResponse response = client.execute(post);
I have a asp.net webform application that has in the page load this
Response.Output.Write("It worked");
I want to grab this Response from the HttpReponse and print it out. How do I do this?
I tried response.getEntity().toString() but it just seems to print out the address in memory.
Thanks
Use ResponseHandler. One line of code. See here and here for sample Android projects using it.
public void postData() {
// Create a new HttpClient and Post Header
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http://www.yoursite.com/user");
try {
// Add your data
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);
nameValuePairs.add(new BasicNameValuePair("id", "12345"));
nameValuePairs.add(new BasicNameValuePair("stringdata", "AndDev is Cool!"));
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
// Execute HTTP Post Request
ResponseHandler<String> responseHandler=new BasicResponseHandler();
String responseBody = httpclient.execute(httppost, responseHandler);
JSONObject response=new JSONObject(responseBody);
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
} catch (IOException e) {
// TODO Auto-generated catch block
}
}
add combination of this post and complete HttpClient at - http://www.androidsnippets.org/snippets/36/
I would just do it the old way. It's a more bulletproof than ResponseHandler, in case you get different content types in the response.
ByteArrayOutputStream outstream = new ByteArrayOutputStream();
response.getEntity().writeTo(outstream);
byte [] responseBody = outstream.toByteArray();
I used the following code
BufferedReader r = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
StringBuilder total = new StringBuilder();
String line = null;
while ((line = r.readLine()) != null) {
total.append(line);
}
r.close();
return total.toString();
The simplest approach is probably using org.apache.http.util.EntityUtils:
String message = EntityUtils.toString(response.getEntity());
It reads the contents of an entity and returns it as a String. The content is converted using the character set from the entity (if any), failing that, "ISO-8859-1" is used.
If necessary, you can pass a default character set explicitly - e.g.
String message = EntityUtils.toString(response.getEntity(). "UTF-8");
It gets the entity content as a String, using the provided default character set if none is found in the entity. If the passed default character set is null, the default "ISO-8859-1" is used.
This code will return the entire response message in respond as a String, and status code in rsp, as an int.
respond = response.getStatusLine().getReasonPhrase();
rsp = response.getStatusLine().getStatusCode();`
I am using an HTTP client (code copied from http://www.mkyong.com/java/apache-httpclient-examples/) to send post requests. I have been trying to use it with http://postcodes.io to look up a bulk of postcodes but failed. According to http://postcodes.io I should send a post request to http://api.postcodes.io/postcodes in the following JSON form: {"postcodes" : ["OX49 5NU", "M32 0JG", "NE30 1DP"]} but I am always getting HTTP Response Code 400.
I have included my code below. Please tell me what am I doing wrong?
Thanks
private void sendPost() throws Exception {
String url = "http://api.postcodes.io/postcodes";
HttpClient client = HttpClientBuilder.create().build();
HttpPost post = new HttpPost(url);
List<NameValuePair> urlParameters = new ArrayList<NameValuePair>();
urlParameters.add(new BasicNameValuePair("postcodes", "[\"OX49 5NU\", \"M32 0JG\", \"NE30 1DP\"]"));
post.setEntity(new UrlEncodedFormEntity(urlParameters));
HttpResponse response = client.execute(post);
System.out.println("Response Code : "
+ response.getStatusLine().getStatusCode());
System.out.println("Reason : "
+ response.getStatusLine().getReasonPhrase());
BufferedReader br = new BufferedReader(
new InputStreamReader(response.getEntity().getContent()));
StringBuffer result = new StringBuffer();
String line = "";
while ((line = br.readLine()) != null) {
result.append(line);
}
br.close();
System.out.println(result.toString());
}
This works, HTTP.UTF_8 is deprecated:
String url = "http://api.postcodes.io/postcodes";
HttpClient client = HttpClientBuilder.create().build();
HttpPost post = new HttpPost(url);
StringEntity params =new StringEntity("{\"postcodes\" : [\"OX49 5NU\", \"M32 0JG\", \"NE30 1DP\"]}");
post.addHeader("Content-Type", "application/json");
post.setEntity(params);
Jon Skeet is right (as usual, I might add), you are basically sending a form and it defaults to form-url-encoding.
You could try something like this instead:
String jsonString = "{\"postcodes\" : [\"OX49 5NU\", \"M32 0JG\", \"NE30 1DP\"]}";
StringEntity entity = new StringEntity(jsonObj.toString(), HTTP.UTF_8);
entity.setContentType("application/json");
post.setEntity(entity);
How do I do a HTTP GET POST PUT DELETE Request using Java?
I'm using CouchDB and I can post data using cUrl into the database. How do I do the same thing using Java however I cannot find any information on this with good documentation.
curl -X PUT http://anna:secret#127.0.0.1:5984/somedatabase/
Could some please change this cUrl request to Java. Otherwise please recommend me libraries to do so.
Thank You.
You can use HttpClient by Apache.
Here is an example usage of how to call a POST request
String url = "https://your.url.to.post.to/";
HttpClient client = HttpClientBuilder.create().build();
HttpPost post = new HttpPost(url);
List<NameValuePair> urlParameters = new ArrayList<NameValuePair>();
urlParameters.add(new BasicNameValuePair("param1", "value1"));
post.setEntity(new UrlEncodedFormEntity(urlParameters));
HttpResponse response = client.execute(post);
System.out.println("Response Code : "
+ response.getStatusLine().getStatusCode());
BufferedReader rd = new BufferedReader(
new InputStreamReader(response.getEntity().getContent()));
StringBuffer result = new StringBuffer();
String line = "";
while ((line = rd.readLine()) != null) {
result.append(line);
}
I do recommend that you check this article for more examples.
Hi guy's (sorry for my english error :P ) i have a problem, I'm trying to post a variable (id_art) to a php page, the problem is that I can't understand if the variable is not sent properly, or if I read it wrong php side.
JAVA CODE:
HttpClient httpclient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(myurl);
StringBuilder builder = new StringBuilder();
String json, result = "";
//Build jsonObject
JSONObject jsonObject = new JSONObject();
jsonObject.accumulate("id_articolo", id_art);
//Convert JSONObject to JSON to String
json = jsonObject.toString();
//Set json to StringEntity
StringEntity se = new StringEntity(json);
//Set httpPost Entity
httpPost.setEntity(se);
//Set some headers to inform server about the type of the content
httpPost.setHeader("Accept", "application/json");
httpPost.setHeader("Content-type", "application/json");
//Execute POST request to the given URL
HttpResponse httpResponse = httpclient.execute(httpPost);
//Receive response as inputStream
StatusLine statusLine = httpResponse.getStatusLine();
int statusCode = statusLine.getStatusCode();
//Convert input stream to string
if (statusCode == 200){
HttpEntity entity = httpResponse.getEntity();
InputStream content = entity.getContent();
BufferedReader reader = new BufferedReader(new InputStreamReader(content));
String line="";
while ((line = reader.readLine()) != null) {
builder.append(line);
result = builder.toString();
}
System.out.println("DEBUG"+" "+result);
PHP CODE
<?php
include_once('configurazione.php');
header("Content-Type: application/json");
mysql_set_charset('utf8');
$value = json_decode(stripslashes($_POST),true);
var_dump($value);
?>
result is NULL... Why ????
Tnks 4 help
EDIT 1
I try to edit my php code replacing
this : json_decode(stripslashes($_POST),true);
with: $value = json_decode($_POST);
But the result is the same.. NULL
EDIT 2
I try to replace
in .JAVA
httpPost.setEntity(new StringEntity(yourJson.toString(),"UTF-8"));
in .PHP
$value = json_decode(file_get_contents('php://input'));
echo $value ;
but result is NULL
in .JAVA
httpPost.setEntity(new StringEntity(yourJson.toString(),"UTF-8"));
in .PHP
$value = file_get_contents('php://input');
var_dump(json_decode($value , true));
try with this
in .JAVA
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(1);
nameValuePairs.add(new BasicNameValuePair("json", yourJson.toString()));
httpPost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
in .PHP
$value = $_POST['json'];
var_dump(json_decode($value , true));
I believe you cannot simply send StringEntity, because POST parameters are expected to be key=>value pairs. That means you need to give a name to your parameter, let's say json.
Then you can do this:
JSONObject jsonObject = new JSONObject();
// here you can set up the data
HttpPost httppost = new HttpPost(URL);
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);
nameValuePairs.add(new BasicNameValuePair("json", jsonObject.toString()));
// here you can add more POST data using nameValuePairs.add()
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
HttpResponse response = httpclient.execute(httppost);
On the PHP side, you'll just do
$value = json_decode($_POST['json'], true);
var_dump($value);