I have written an core java code to post call with form-data(always pdf) along with Auth but i am always getting bad request.enter image description here
public class POSTAPIClientSucessFile2 {
public static void main(String[] args) throws IOException {
try {
String boundary = "";
final String LINE_FEED = "\r\n";
HttpURLConnection httpConn;
OutputStream outputStream;
PrintWriter writer;
String authData = "Bearer 3AAABLblqZhAmXYU1afunO0RBkBBOxDcE0elkSXa6WmNorjjNNGoWjQF5f_mnl21GVK4bOGjsIzqNNB1ZLLLZol--21hmnI1w";
// creates a unique boundary based on time stamp
boundary = "===" + System.currentTimeMillis() + "===";
URL url = new URL("https://api.na3.echosign.com/api/rest/v6/transientDocuments");
System.out.println("URL : " + url.toString());
httpConn = (HttpURLConnection) url.openConnection();
httpConn.setUseCaches(false);
httpConn.setDoOutput(true); // indicates POST method
httpConn.setDoInput(true);
httpConn.setRequestProperty("Content-Type", "multipart/form-data; boundary=" + boundary);
httpConn.addRequestProperty("Authorization", authData);
outputStream = httpConn.getOutputStream();
writer = new PrintWriter(new OutputStreamWriter(outputStream, "UTF-8"), true);
String fileName = "C:/delete/test.pdf";
//String fieldName = "File";
writer.append("--" + boundary).append(LINE_FEED);
writer.append("Content-Disposition: form-data; name=\"File\"; filename=\"/C:/delete/test.pdf\"").append(LINE_FEED);
writer.append("Content-Type: application/pdf").append(LINE_FEED);
writer.append("Content-Transfer-Encoding: binary").append(LINE_FEED);
writer.append(LINE_FEED);
writer.flush();
int responseCode = ((HttpURLConnection) httpConn).getResponseCode();
System.out.println("responseCode --> "+responseCode);
System.out.println("response msg--> "+((HttpURLConnection) httpConn).getResponseMessage());
System.out.println("response --> "+((HttpURLConnection) httpConn).toString());
FileInputStream inputStream = new FileInputStream(fileName);
byte[] buffer = new byte[4096];
int bytesRead = -1;
while ((bytesRead = inputStream.read(buffer)) != -1) {
outputStream.write(buffer, 0, bytesRead);
}
outputStream.flush();
inputStream.close();
writer.append(LINE_FEED);
writer.flush();
} catch (Exception e) {
e.printStackTrace();
}
}
}
always getting bad request even by changing the content-type
enter image description here
I want to call a REST API with an Unity-Script but it occurs me the Error 400 Bad Request. It is maybe because of the http-header. May you can help me. SAP offers a Code Snippet in JAVA which I want to show you first:
DataOutputStream dataOut = null;
BufferedReader in =null;
try {
//API endpoint for API sandbox
String url = "https://sandbox.api.sap.com/mlfs/api/v2/image/scene-text-
recognition";
//Available API Endpoints
//https://mlfproduction-scene-text-
recognition.cfapps.eu10.hana.ondemand.com/api/v2/image
//https://mlfproduction-scene-text-
recognition.cfapps.us10.hana.ondemand.com/api/v2/image
URL urlObj = new URL(url);
HttpURLConnection connection = (HttpURLConnection)
urlObj.openConnection();
//setting request method
connection.setRequestMethod("POST");
//adding headers
connection.setRequestProperty("content-type","multipart/form-data;
boundary=---011000010111000001101001");
//API Key for API Sandbox
connection.setRequestProperty("APIKey","----api-Key---");
//Available Security Schemes for productive API Endpoints
//OAuth 2.0
connection.setDoInput(true);
//sending POST request
connection.setDoOutput(true);
dataOut = new DataOutputStream(connection.getOutputStream());
dataOut.writeBytes("-----011000010111000001101001\r\nContent-
Disposition: form-data; name=\"files\"; filename=\"<file_name>\"\r\nContent-Type: <file_type>\r\n\r\n<file_contents>\r\n-----011000010111000001101001--");
dataOut.flush();
int responseCode = connection.getResponseCode();
in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
String inputLine;
StringBuffer response = new StringBuffer();
while ((inputLine = in.readLine()) != null) {
response.append(inputLine);
}
//printing response
System.out.println(response.toString());
} catch (Exception e) {
//do something with exception
e.printStackTrace();
} finally {
try {
if(dataOut != null) {
dataOut.close();
}
if(in != null) {
in.close();
}
} catch (IOException e) {
//do something with exception
e.printStackTrace();
}
}
My UnityCode looks something like this:
public void ExecutePost()
{
Debug.Log("execute started");
byte[] img =
File.ReadAllBytes(#"C:\Users\InnovationLab\Documents\ECENTA\ECENTA
FSE\Bild1.jpg");
string url = "https://sandbox.api.sap.com/mlfs/api/v2/image/scene-
text-recognition";
coroutine = Post(url, img);
StartCoroutine(coroutine);
}
public IEnumerator Post(string url,byte[] image)
{
WWWForm form = new WWWForm();
form.AddBinaryData("imageField", image, "HoloImg");
var headers = new Dictionary<string, string> {
{"content-type", "multipart/form-data; boundary=---011000010111000001101001" },
{"APIKey", "---here I implemented the key---" }
};
WWW www = new WWW(url, image, headers);
yield return www;
if (www.error != null && www.error != "")
{ // on error, show information and return
Debug.Log("Network Error occured: " + www.error);
yield break;
}
while (!www.isDone)
{
Debug.Log(www.text);
}
}
}
So my question is, how to change the unity code so that it works?
I fixed it by using MultipartFormSections. The problem was that the api expected form-data not a binary Array.
public IEnumerator Upload(string url, byte[] img)
{
List<IMultipartFormSection> formData = new List<IMultipartFormSection>();
MultipartFormFileSection myFormFile = new MultipartFormFileSection("files", img,
"Bild1.jpg", "multipart/form-data");
formData.Add(myFormFile);
Debug.Log(formData.ToString());
UnityWebRequest www = UnityWebRequest.Post(url, formData);
www.SetRequestHeader("APIKey", "<api-key>");
yield return www.SendWebRequest();
if (www.isNetworkError || www.isHttpError)
{
throw new Exception(www.downloadHandler.text ?? www.error);
}
else
{
Debug.Log("Done!!!!!");
}
Debug.Log(www.downloadHandler.text);
var ResultObject = JsonUtility.FromJson<TextPrediction>(www.downloadHandler.text);
foreach (var result in ResultObject.texts)
{
}
}
I am generating a powerpoint file(.pptx) and i would like to return back this file when a REST call happens. But now am able to get only .File type extension.
#RequestMapping(value = "/ImageManagerPpt/{accessionId}", method = RequestMethod.GET, produces = "application/ppt")
public ResponseEntity<InputStreamResource> createPptforAccessionId(#PathVariable("accessionId") String accessionId,HttpServletResponse response) throws IOException** {
System.out.println("Creating PPT for Patient Details with id " + accessionId);
File pptFile = imageManagerService.getPptForAccessionId(accessionId);
if (pptFile == null) {
System.out.println("Patient Id with id " + accessionId + " not found");
return new ResponseEntity<InputStreamResource>(HttpStatus.NOT_FOUND);
}
InputStream stream = null;
try {
stream = new FileInputStream(pptFile);
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
ClassPathResource classpathfile = new ClassPathResource("Titlelayout3.pptx");
InputStreamResource inputStreamResource = new InputStreamResource(stream);
return ResponseEntity.ok().contentLength(classpathfile.contentLength())
.contentType(MediaType.parseMediaType("application/octet-stream"))
.body(new InputStreamResource(classpathfile.getInputStream()));
}
-Bharat
Have you tried, this?
InputStream stream = new InputStream(pptFile);
org.apache.commons.io.IOUtils.copy(is, response.getOutputStream());
response.flushBuffer();
You will get file as you put into the InputStream.
I've been working on a portlet that calls Rest API. When the API is called and the requested data doesn't exist, it returns an appropriate error message in JSON format (with Bad request http code - 400), and if the id exists, it returns the requested data in json (with code 200).
How can I get the body of response (that contains error description) because invoking httpConn.getInputStream() method throws exception in case the response is bad request error.
Code:
HttpURLConnection httpConn = null;
URL url = new URL("http://192.168.1.20/personinfo.html?id=30");
URLConnection connection = url.openConnection();
httpConn = (HttpURLConnection) connection;
httpConn.setRequestProperty("Accept", "application/json");
httpConn.setRequestMethod("GET");
httpConn.setRequestProperty("charset", "utf-8");
BufferedReader br = null;
if (!(httpConn.getResponseCode() == 400)) {
br = new BufferedReader(new InputStreamReader((httpConn.getInputStream())));
String output;
StringBuilder builder = new StringBuilder();
System.out.println("Output from Server .... \n");
while ((output = br.readLine()) != null)
builder.append(output);
return builder.toString();
}else
here should catch the error message. :)
In case of non-successful response codes, you have to read the body with HttpURLConnection.getErrorStream().
you can get body of Bad Request in HttpURLConnection using this code :
InputStream errorstream = connection.getErrorStream();
String response = "";
String line;
BufferedReader br = new BufferedReader(new InputStreamReader(errorstream));
while ((line = br.readLine()) != null) {
response += line;
}
Log.d("body of Bad Request HttpURLConnection", "Response: " + response);
Use Apache Httpclient:
String url = "http://192.168.1.6:7003/life/lifews/getFirstInstallment.html?rootPolicyNo=1392/2126/2/106/9995/1904&token=1984";
HttpClient client = HttpClientBuilder.create().build();
HttpGet request = new HttpGet(url);
// add request header
HttpResponse response = client.execute(request);
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);
System.out.println(result);
I have written one simple web service which get product list in JSONText which is string object
Web Service code is below
using System;
using System.Collections.Generic;
using System.Web;
using System.Web.Services;
using System.Web.Script.Services;
using System.Runtime.Serialization.Json;
using System.IO;
using System.Text;
/// <summary>
/// Summary description for JsonWebService
/// </summary>
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[System.Web.Script.Services.ScriptService]
public class JsonWebService : System.Web.Services.WebService
{
public JsonWebService () {
//Uncomment the following line if using designed components
//InitializeComponent();
}
[WebMethod]
[ScriptMethod(ResponseFormat = ResponseFormat.Json)]
public string GetProductsJson(string prefix)
{
List<Product> products = new List<Product>();
if (prefix.Trim().Equals(string.Empty, StringComparison.OrdinalIgnoreCase))
{
products = ProductFacade.GetAllProducts();
}
else
{
products = ProductFacade.GetProducts(prefix);
}
//yourobject is your actula object (may be collection) you want to serialize to json
DataContractJsonSerializer serializer = new DataContractJsonSerializer(products.GetType());
//create a memory stream
MemoryStream ms = new MemoryStream();
//serialize the object to memory stream
serializer.WriteObject(ms, products);
//convert the serizlized object to string
string jsonString = Encoding.Default.GetString(ms.ToArray());
//close the memory stream
ms.Close();
return jsonString;
}
}
now it give me resoponse like below :
{"d":"[{\"ProductID\":1,\"ProductName\":\"Product 1\"},{\"ProductID\":2,\"ProductName\":\"Product 2\"},{\"ProductID\":3,\"ProductName\":\"Product 3\"},{\"ProductID\":4,\"ProductName\":\"Product 4\"},{\"ProductID\":5,\"ProductName\":\"Product 5\"},{\"ProductID\":6,\"ProductName\":\"Product 6\"},{\"ProductID\":7,\"ProductName\":\"Product 7\"},{\"ProductID\":8,\"ProductName\":\"Product 8\"},{\"ProductID\":9,\"ProductName\":\"Product 9\"},{\"ProductID\":10,\"ProductName\":\"Product 10\"}]"}
But i am looking for below out put
[{"ProductID":1,"ProductName":"Product 1"},{"ProductID":2,"ProductName":"Product 2"},{"ProductID":3,"ProductName":"Product 3"},{"ProductID":4,"ProductName":"Product 4"},{"ProductID":5,"ProductName":"Product 5"},{"ProductID":6,"ProductName":"Product 6"},{"ProductID":7,"ProductName":"Product 7"},{"ProductID":8,"ProductName":"Product 8"},{"ProductID":9,"ProductName":"Product 9"},{"ProductID":10,"ProductName":"Product 10"}]
can any one tell me what is actual problem
Thanks
First there was a change with ASP.NET 3.5 for security reasons Microsoft added the "d" to the response. Below is a link from Dave Ward at the Encosia that talks about what your seeing:
A breaking change between versions of ASP.NET AJAX. He has several posts that talks about this that can help you further with processing JSON and ASP.NET
Actually, if you just remove the
[ScriptMethod(ResponseFormat = ResponseFormat.Json)]
from the method, and you return the jsonString that you serialized using the JavaScriptSerializer you will get exactelly the output that you were looking for.
Notice that u have double quotes beside ur array in your response.In this way u return json format not json object from ur web method.Json format is a string.Therefore u have to use json.parse() function in order to parse json string to json object.If u dont want to use parse fuction,u have to remove serialize in ur web method.Thus u get a json object.
in .net web service
[WebMethod]
public string Android_DDD(string KullaniciKey, string Durum, string PersonelKey)
{
return EU.EncodeToBase64("{\"Status\":\"OK\",\"R\":[{\"ImzaTipi\":\"Paraf\", \"Personel\":\"Ali Veli üğişçöıÜĞİŞÇÖI\", \"ImzaDurumTipi\":\"Tamam\", \"TamamTar\":\"1.1.2003 11:21\"},{\"ImzaTipi\":\"İmza\", \"Personel\":\"Ali Ak\", \"ImzaDurumTipi\":\"Tamam\", \"TamamTar\":\"2.2.2003 11:21\"}]}");
}
static public string EncodeToBase64(string toEncode)
{
UTF8Encoding encoding = new UTF8Encoding();
byte[] bytes = encoding.GetBytes(toEncode);
string returnValue = System.Convert.ToBase64String(bytes);
return returnValue;
}
in android
private static String convertStreamToString(InputStream is)
{
BufferedReader reader = new BufferedReader(new InputStreamReader(is));
StringBuilder sb = new StringBuilder();
String line = null;
try
{
while ((line = reader.readLine()) != null)
{
sb.append(line + "\n");
}
}
catch (IOException e)
{
e.printStackTrace();
}
finally
{
try
{
is.close();
}
catch (IOException e)
{
e.printStackTrace();
}
}
return sb.toString();
}
private void LoadJsonDataFromASPNET()
{
try
{
DefaultHttpClient httpclient = new DefaultHttpClient();
HttpPost httpPostRequest = new HttpPost(this.WSURL + "/WS.asmx/Android_DDD");
JSONObject jsonObjSend = new JSONObject();
jsonObjSend.put("KullaniciKey", "value_1");
jsonObjSend.put("Durum", "value_2");
jsonObjSend.put("PersonelKey", "value_3");
StringEntity se = new StringEntity(jsonObjSend.toString());
httpPostRequest.setEntity(se);
httpPostRequest.setHeader("Accept", "application/json");
httpPostRequest.setHeader("Content-type", "application/json");
// httpPostRequest.setHeader("Accept-Encoding", "gzip"); // only set this parameter if you would like to use gzip compression
HttpResponse response = (HttpResponse) httpclient.execute(httpPostRequest);
HttpEntity entity = response.getEntity();
if (entity != null)
{
InputStream instream = entity.getContent();
String resultString = convertStreamToString(instream);
instream.close();
resultString = resultString.substring(6, resultString.length()-3);
resultString = new String(android.util.Base64.decode(resultString, 0), "UTF-8");
JSONObject object = new JSONObject(resultString);
String oDurum = object.getString("Status");
if (oDurum.equals("OK"))
{
JSONArray jsonArray = new JSONArray(object.getString("R"));
if (jsonArray.length() > 0)
{
for (int i = 0; i < jsonArray.length(); i++)
{
JSONObject jsonObject = jsonArray.getJSONObject(i);
String ImzaTipi = jsonObject.getString("ImzaTipi");
String Personel = jsonObject.getString("Personel");
String ImzaDurumTipi = jsonObject.getString("ImzaDurumTipi");
String TamamTar = jsonObject.getString("TamamTar");
Toast.makeText(getApplicationContext(), "ImzaTipi:" + ImzaTipi + " Personel:" + Personel + " ImzaDurumTipi:" + ImzaDurumTipi + " TamamTar:" + TamamTar, Toast.LENGTH_LONG).show();
}
}
}
}
}
catch (Exception e)
{
e.printStackTrace();
}
}