package com.hxzkoa.util;

import java.io.IOException;

import javax.servlet.http.HttpServletRequest;

import net.sf.json.JSONObject;

public class RequestUtils {

	public static String getRequestJsonString(HttpServletRequest request,
			String charset) throws IOException {
		String submitMehtod = request.getMethod();
		if (submitMehtod.equals("GET")) {
			return new String(request.getQueryString().getBytes("UTF-8"), charset)
					.replaceAll("%22", "\"");
		} else {
			byte buffer[] = getRequestPostBytes(request);
			return new String(buffer, charset);
		}
	}

	public static byte[] getRequestPostBytes(HttpServletRequest request)
			throws IOException {
		int contentLength = request.getContentLength();
		if (contentLength < 0) {
			return null;
		}
		byte buffer[] = new byte[contentLength];
		for (int i = 0; i < contentLength;) {

			int readlen = request.getInputStream().read(buffer, i,
					contentLength - i);
			if (readlen == -1) {
				break;
			}
			i += readlen;
		}
		return buffer;
	}

	/**
	 * 使用统一的返回结果
	 * 
	 * @param Status
	 *            返回结果状态 1.成功 0. 失败
	 * @param Message
	 *            返回结果描述信息
	 * @param ErrorCode
	 *            返回结果错误代码
	 * @param Data
	 *            数据结果，无返回则为null
	 * @return
	 */
	public static JSONObject returnJson(String status, String message,
			String errorCode, String data) {
		JSONObject reJson = new JSONObject();
		reJson.put("Status", status);
		reJson.put("Message", message);
		reJson.put("ErrorCode", errorCode);
		reJson.put("Describe", data);
		return reJson;
	}
}