n_malatabarcode/src/com/mes/controller/barcode/BaseController.java

package com.mes.controller.barcode;

import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
import org.springframework.ui.ModelMap;

public class BaseController
{
	protected static final String defultCharset = "UTF-8";
	private static final String SUCCESS = "success";
	private static final String ERROR = "error";
	private static final String ERROR_CODE = "errCode";
	private static final String CONTENT = "content";
	private static final String ERROR_MESSAGE = "exceptionInfo";

	protected String decodeUnicodeString(String param)
	{
		try
		{
			return new String(param.getBytes("utf-8"), "UTF-8"); } catch (UnsupportedEncodingException e) {
		}
		return param;
	}

	protected ModelMap success()
	{
		return new ModelMap("success", Boolean.valueOf(true));
	}

	protected ModelMap success(Object content) {
		return success().addAttribute("content", content);
	}

	protected ModelMap error() {
		return new ModelMap("error", Boolean.valueOf(true));
	}

	protected ModelMap error(String errMsg) {
		return error().addAttribute("exceptionInfo", errMsg);
	}

	protected ModelMap error(int errCode, String errMsg) {
		return error(errMsg).addAttribute("errCode", Integer.valueOf(errCode));
	}

	protected ResponseEntity<byte[]> outputStream(String fileName, byte[] bytes)
	{
		HttpHeaders headers = new HttpHeaders();
		headers.setContentType(MediaType.APPLICATION_OCTET_STREAM);
		try {
			headers.setContentDispositionFormData("attachment", URLEncoder.encode(fileName, "UTF-8"));
		} catch (UnsupportedEncodingException localUnsupportedEncodingException) {
		}
		return new ResponseEntity(bytes, headers, HttpStatus.CREATED);
	}
}