StringEntityHandler.java

/**
 * Copyright (c) 2012-2013.
 *
 * 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 com.wisedu.scc.love.widget.http;

import org.apache.http.HttpEntity;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;

public class StringEntityHandler {

	public String handleEntity(HttpEntity entity, EntityCallBack callback,
			String charset) throws IOException {
		if (entity == null)
			return null;

		ByteArrayOutputStream outStream = new ByteArrayOutputStream();
		byte[] buffer = new byte[1024];

		long count = entity.getContentLength();
		long curCount = 0;
		int len = -1;
		InputStream is = entity.getContent();
		while ((len = is.read(buffer)) != -1) {
			outStream.write(buffer, 0, len);
			curCount += len;
			if (callback != null)
				callback.callBack(count, curCount, false);
		}
		if (callback != null)
			callback.callBack(count, curCount, true);
		byte[] data = outStream.toByteArray();
		outStream.close();
		is.close();
		return new String(data, charset);
	}

}