How to send byte array in a rest web service

ClassCastException: java. Go to Solution. View solution in original post. Yes I saw that post and I attached my files with a CID tag as you can see in my post written in red in soapenv. The problem is that the binary file with this method seems to be transfered as a string and my Web Service is waiting an array of bytes.

String cannot be cast to [B. I don't see how to set the binary content as an array of bytes or perharps I wrongly read the article you sent in your post. Can you please try as per the Inline Files section? It should be using file:xxx, and you need to Enable Inline Files in the request's properties in the bottom-left. Switch To: SmartBear. License Portal. Sign In Register. SmartBear Support Resources.

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All forum topics Previous Topic Next Topic. Accepted Solutions. In response to frarev. Community Hero. Have you looked at the information here? Take a look at the Inline Files section. In response to JHunt. Hi JHunt. Thanks for any help. Entering cid:xxx relates to the section on MTOM. Post Reply. Preview Exit Preview. You must be signed in to add attachments.

Additional options Associated Products. You do not have permission to remove this product association. New Here?Postman rest client is a chrome extension that is basically a powerful HTTP rest client for testing web services. You can check every request using this client. I have been using this for long time and its really awesome. Today I am talking about how can you send a request with the array.

how to send byte array in a rest web service

Generally, we can send from a request like a key-value pair. But if we need to send array then what is the process? There is no array built-in array feature in postman.

We can set the key in input names like username, password and like so on. Here this HTML form represent that user can add multiple favorite pet name. So that we need to add pet array in the key field. So after postman transform how is look like?

If you want to send some complex array then also you can easily send it from the postman. If your array looks like.

If you have any further queries in your mind then please feel free to reply to me. Tags: "get" api array post Postman Rest Client send array in get post request. Have a question.

Thanks for your query. Your email address will not be published. Skip to content Postman 4. First thing let me clarify that how can we send a post request from an HTML form?

Post Request. Array post html from. Array Received. Complex Array. Complex Array Post. Complex Array Response.Create addressHttpWebRequest. GetResponseHttpWebResponse. If request. End If. This is resulting in an Exception being thrown by the Web Service. ArgumentException: Cannot convert hello to System. FormatException: Input string was not in a correct format.

Any help on correcting this problem will be much appreciated. Exception stack trace:. Based on your description and code provided, I see you want to use the HttpWebRequest to post the byte[] to web service.

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However, as we known that the soap protocol is the string text exchange. So I think we cannot pass the byte[] to web service directly. Print Share Twitter Facebook Email. Create addressHttpWebRequest request. GetRequestStream postStream. Write byteData, 0, byteData.

Exception stack trace: System. Fuxiang Zhan Try to generate service proxy by adding service reference instead of using HttpWebRequest. Try to convert byte[] to base64, then pass the base64 to web service. Best Regards! We are trying to better understand customer views on social support experience.Than don't use direct a webrequest but create a kind of Webservice or WCF as it is currently named.

Ask a question. Quick access. Search related threads. Remove From My Forums. Answered by:. Visual Studio Languages. NET Framework.

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Visual C. Sign in to vote. How can I send a byte array to a receiving web application? I'm trying to make a program that receives messages but not necessarily be within a network. Friday, August 26, AM.

Alright, here's what I did. I used TCP to send messages over the internet by connecting to the router IP which forwards it to the computer. Wednesday, August 31, PM. YOu have provided so little info. Write byteArray, 0, byteArray.

how to send byte array in a rest web service

WriteLine HttpWebResponse response. Now how can I make a program that is able to receive the data this one has sent? Saturday, August 27, AM. I've done both, but now I want to be able to do that over the internet.

My question I guess really is how can I do this? Saturday, August 27, PM. Try the socket class in C. Monday, August 29, AM. Monday, August 29, PM.I have a small favor to ask you. Do help me keep my Youtube Channel czetsuyatech going by sharing my videos and subscribing to my channel so that it can reach and educate more viewers.

Help me create more FREE online courses and learning materials for programmers and remote workers by becoming my Patron. This tutorial will not delve into angular nor will we discuss what a directive is. We will not try to explain what a rest web service is. Post a Comment. Sign up and be an early adopter at Creativitink!

how to send byte array in a rest web service

Since you're here Top Ads. Label Links. Tech Blog. Youtube Playlist course. Display a byte[] image from a REST web service This tutorial will not delve into angular nor will we discuss what a directive is. Instead we will provide a demonstration via actual code, how we can consume a rest service from angular that returns an array of byte and display it as an image. We will also provide a default image in case the web service fails to return a valid image.

There are many ways to do it, but I chose a directive because of its simplicity.

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Handle it accordingly. What it does is it accepts an id and imageType as parameters. We use the id to get the image from the rest service; imageType is used to construct different url depending on its value. This is so we can reused this directive.

We get the image path and convert it to byte[] using Base64 class. Note that we use a dto to store the byte[] and mimeType, this will let us return the information as json, instead of just returning a byte[], which often caused problem. Also note that we send the mimeType, we need it when displaying the image. Like to share? Related java Newer Post Older Post Home item. Follow Me?By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

how to send byte array in a rest web service

Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. When the Client retrieve this object and it gets result class with cast to byte[] it appears the above exception, this is the client code.

If I use a cast to string and then to bytes the content of the file is different from original file. I don't care the file type, file content, I only have to copy from server to client directory How can I do?

Simply generate byte array from the response:. Learn more. Asked 4 years, 10 months ago. Active 4 years, 10 months ago. Viewed 25k times. ClassCastException: java. String cannot be cast to [B The originl file is converted through Files. When the Client retrieve this object and it gets result class with cast to byte[] it appears the above exception, this is the client code Files.

Can you show how you defined the rest endpoint and such? What content type is it accepting? Given the right mapper you can get this as byte[]. How does your Response class look like?

It should not contain Object it should be a byte[] field. I'd consider changing the response class if you don't actually have the same response all the time. If you tell it to deserialize e. Active Oldest Votes. Is there a way to retrieve the file name and extension otherwise I don't know the original file? I update with new and working code, do you think it is correct?

Simply generate byte array from the response: Files. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown.

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Related The problem I would like to discuss is an API call, where you need to send binary data for example multiple images and some metadata information together. There are various ways you can approach this, and I will describe them briefly. This enables the client to upload some initial files, then later add some more.

This could be a good approach if you are creating a new photo album metadatathen adding photos to it. There are some cases however when metadata and files are one entity and neither makes sense on its own. In this scenario you want to take some action on the whole client request data right away. If you used approach 1 in this scenario, you need to manage state between client requests.

This can be complex and may hurt your scalability. Fortunately you can send all data in one request if this is what makes the most sense. Here are a few ways to do this:.

This may be just fine in some cases. However if the extra message size is not something you can put up with, then you can use a form of binary serialization. With ASP. On the client side, you can use JSON.

How to send arrays with GET or POST request in POSTMAN Rest Client

NET to do the serialization of the request message. In those cases you can still avoid sending binary data in BASE64 encoded string. This is a bit more complex than the previous approaches, so I would like to go into more detail. But before that, I should mention, that this approach is not semantically correct.

Web API to receive byte array

But it is not. The HttpClient library for. I can live with the latter. This part contains the metadata. Then there are two parts containing image data with names image0 and image1. Those two additionally specify: image filename and image type in Content-Type header.

Display a byte[] image from a REST web service

Then it can put the request together and execute a controller action passing in received data. So how to actually implement this using ASP. Now, when implementing a WebAPI controller, we would like to receive and instance of the ImageSet as a parameter of the action.

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Fortunately, WebAPI has a notion of MediaTypeFormatter, which basically lets you define logic for translating a certain type of request to a certain.

NET type and back. Then in CanRead and CanWrite you specify. NET types, to which or from which the request can be translated. ReadFromStreamAsync does the actual work. Decoupling controller logic from request parsing logic gives you possibility to handle multiple request formats and you can let your clients choose the format they are most comfortable with by specifying appropriate Content-Type header.

Note: when you do the content. How about some client code?

How to create RESTFUL API in JSON format using JAVA

We want the JSON serialization to ignore Images collection, since they will be put into separate request parts. The best what you can do while implementing public-facing API, is to let your clients choose format which is convenient for them.

The code presented in this post can be found on Github. February 27,


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