/*******************************************************************************
 * Copyright 2017 Bstek
 * 
 * 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.itheima.sfbx.rule.console.servlet;

import java.io.IOException;
import java.io.OutputStream;
import java.text.SimpleDateFormat;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletResponse;

import org.codehaus.jackson.map.ObjectMapper;
import org.codehaus.jackson.map.SerializationConfig;
import org.codehaus.jackson.map.annotate.JsonSerialize.Inclusion;

import com.itheima.sfbx.framework.rule.Configure;

/**
 * @author Jacky.gao
 * @since 2016年5月23日
 */
public abstract class WriteJsonServletHandler extends BaseServletHandler{
	protected void writeObjectToJson(HttpServletResponse resp,Object obj) throws ServletException, IOException{
		resp.setHeader("Access-Control-Allow-Origin", "*");
		resp.setContentType("text/json");
		resp.setCharacterEncoding("UTF-8");
		ObjectMapper mapper=new ObjectMapper();
		mapper.setSerializationInclusion(Inclusion.NON_NULL);
		mapper.configure(SerializationConfig.Feature.WRITE_DATES_AS_TIMESTAMPS,false);
		mapper.setDateFormat(new SimpleDateFormat(Configure.getDateFormat()));
		OutputStream out = resp.getOutputStream();
		try {
			mapper.writeValue(out, obj);
		} finally {
			out.flush();
			out.close();
		}
	}
}
