hpcc.hut.edu.vn.ocr.ocrserviceconnector.HpccOcrServiceConnector.java Source code

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Here is the source code for hpcc.hut.edu.vn.ocr.ocrserviceconnector.HpccOcrServiceConnector.java

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/*
 * Copyright 2012 Hai Do Minh
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package hpcc.hut.edu.vn.ocr.ocrserviceconnector;

import java.io.BufferedReader;
import java.io.InputStreamReader;

import org.apache.http.HttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.mime.HttpMultipartMode;
import org.apache.http.entity.mime.MultipartEntity;
import org.apache.http.entity.mime.content.ByteArrayBody;
import org.apache.http.entity.mime.content.StringBody;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.params.BasicHttpParams;
import org.apache.http.params.HttpConnectionParams;
import org.apache.http.params.HttpParams;

import android.util.Log;

public class HpccOcrServiceConnector {
    private static final String HOST = "http://bkluster.hust.edu.vn:8080/TessOCRWebServices/ocrservice";

    /*
     * FormDataParam("image") InputStream uploadedInputStream,
     * 
     * @FormDataParam("size") int imagesize,
     * 
     * @FormDataParam("width") int width, @FormDataParam("height") int height,
     * 
     * @DefaultValue("eng") @FormDataParam("lang") String language,
     * 
     * @DefaultValue("3") @FormDataParam("psm") int pagesegmode,
     * 
     * @DefaultValue("true") @FormDataParam("process") boolean isPrePostProcess
     */
    public static String postToOcrService(byte[] data, int size, int imgw, int imgh, String lang, int psm,
            boolean isPrePostProcess) {
        System.out.println("Sent data: w = " + imgw + ", h = " + imgh + ", psm = " + psm + ", process: "
                + isPrePostProcess + ", with lang: " + lang);
        String result = "";

        try {
            HttpParams httpParamenters = new BasicHttpParams();
            HttpConnectionParams.setConnectionTimeout(httpParamenters, 30000);
            DefaultHttpClient httpClient = new DefaultHttpClient(httpParamenters);
            HttpPost postRequest = new HttpPost(HOST);

            ByteArrayBody bab = new ByteArrayBody(data, "input.jpg");
            MultipartEntity reqEntity = new MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE);
            reqEntity.addPart("image", bab);
            reqEntity.addPart("size", new StringBody("" + size)); // size to
            // check if
            // decompress
            // fail
            reqEntity.addPart("width", new StringBody("" + imgw));
            reqEntity.addPart("height", new StringBody("" + imgh));
            reqEntity.addPart("lang", new StringBody(lang));
            reqEntity.addPart("psm", new StringBody("" + psm));
            reqEntity.addPart("process", new StringBody("" + isPrePostProcess));

            postRequest.setEntity(reqEntity);

            HttpResponse response = httpClient.execute(postRequest);
            BufferedReader reader = new BufferedReader(
                    new InputStreamReader(response.getEntity().getContent(), "UTF-8"));
            String sResponse;
            StringBuilder s = new StringBuilder();
            while ((sResponse = reader.readLine()) != null) {
                s = s.append(sResponse);
            }
            result = s.toString();
            System.out.println("result in Json: " + result);
        } catch (Exception e) {
            // handle exception here
            Log.e(e.getClass().getName(), e.getMessage());
            return null;
        }
        return result;

    }
}