So I'm trying to make a multipart-form POST and I want to attach a org.apache.http.entity.mime.content.FileBody to the MultipartEntity that I'm going to be posting. Now I've got the raw string file data that I want to populate the FileBody with already. However, this project is using Google App Engine which prohibits every way I've seen of generating the FileBody. Anyone know how to create a FileBody object and populate it in GAE?
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Dan McGrath
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Dangerbunny
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Which ways have you seen it prohibit, and with which errors/warnings? – nanofarad Jul 25 '13 at 22:11
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It restricts you from using classes that can write to files, like FileWriter and FileOutputStream. You need to make a java.io.File object in order to make a FileBody object – Dangerbunny Jul 25 '13 at 22:12
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Basically it won't let you write to the user's local machine. I'm wondering if there's a way to create and populate a java.io.File object without writing to the user's local machine – Dangerbunny Jul 25 '13 at 22:16
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So just ignore FileBody. You want to use the method MultipartEntity.addPart(ContentBody content). This works with FileBody, because FileBody's parent class implements ContentBody.
ContentBody is a super simple interface with just two methods. Create a class that implements it, create an instance of your class, and pass it in to the addPart method.
public ByteContentBody implements ContentBody {
private String name;
private byte[] data;
public ByteContentBody(String name, byte[] data) {
this.name = name;
this.data = data;
}
public String getFilename(){
returns name;
}
public void writeTo(OutputStream out) throws IOException {
out.write(data);
}
}
Robert Parker
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Thanks, this is what I ended up using, but with the apache HttpClient and HttpPost object to facilitate the post as well – Dangerbunny Aug 01 '13 at 22:38