Example usage for org.apache.commons.httpclient.methods.multipart MultipartEntity MultipartEntity

Introduction

In this page you can find the example usage for org.apache.commons.httpclient.methods.multipart MultipartEntity MultipartEntity.

Prototype

public MultipartEntity(Part[] parts, HttpParams params) 

Source Link

Document

Creates a new multipart entity containing the given parts.

Usage

From source file:net.exclaimindustries.geohashdroid.wiki.WikiUtils.java

/** Uploads an image to the wiki
   @param  httpclient  an active HTTP session, wiki login has to have happened before.
   @param  filename    the name of the new image file
   @param  description the description of the image. An initial description will be used as page content for the image's wiki page
   @param  formfields  a formfields hash as modified by getWikiPage containing an edittoken we can use (see the MediaWiki API for reasons why)
   @param  data        a ByteArray containing the raw image data (assuming jpeg encoding, currently).
*///ww  w  .  ja v  a2  s  .c om
public static void putWikiImage(HttpClient httpclient, String filename, String description,
        HashMap<String, String> formfields, byte[] data) throws Exception {
    if (!formfields.containsKey("token")) {
        throw new WikiException(R.string.wiki_error_unknown);
    }

    HttpPost httppost = new HttpPost(WIKI_API_URL);

    // First, we need an edit token.  Let's get one.
    ArrayList<NameValuePair> tnvps = new ArrayList<NameValuePair>();
    tnvps.add(new BasicNameValuePair("action", "query"));
    tnvps.add(new BasicNameValuePair("prop", "info"));
    tnvps.add(new BasicNameValuePair("intoken", "edit"));
    tnvps.add(new BasicNameValuePair("titles", "UPLOAD_AN_IMAGE"));
    tnvps.add(new BasicNameValuePair("format", "xml"));

    httppost.setEntity(new UrlEncodedFormEntity(tnvps, "utf-8"));
    Document response = getHttpDocument(httpclient, httppost);

    Element root = response.getDocumentElement();

    // Hopefully, a token exists.  If not, a problem exists.
    String token;
    Element page;
    try {
        page = DOMUtil.getFirstElement(root, "page");
        token = DOMUtil.getSimpleAttributeText(page, "edittoken");
    } catch (Exception e) {
        throw new WikiException(R.string.wiki_error_xml);
    }

    // TOKEN GET!  Now we've got us enough to get our upload on!
    Part[] nvps = new Part[] { new StringPart("action", "upload", "utf-8"),
            new StringPart("filename", filename, "utf-8"), new StringPart("comment", description, "utf-8"),
            new StringPart("watch", "true", "utf-8"), new StringPart("ignorewarnings", "true", "utf-8"),
            new StringPart("token", token, "utf-8"), new StringPart("format", "xml", "utf-8"),
            new FilePart("file", new ByteArrayPartSource(filename, data), "image/jpeg", "utf-8"), };
    httppost.setEntity(new MultipartEntity(nvps, httppost.getParams()));

    response = getHttpDocument(httpclient, httppost);

    root = response.getDocumentElement();

    // First, check for errors.
    if (doesResponseHaveError(root)) {
        throw new WikiException(getErrorTextId(findErrorCode(root)));
    }
}

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