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KYGUtils Springframework Package

There is a newer version: 0.2.3

/**
 * The MIT License (MIT) Copyright © 2018 Kim Younggeon
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
 * and associated documentation files (the “Software”), to deal in the Software without restriction,
 * including without limitation the rights to use, copy, modify, merge, publish, distribute,
 * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * 
The above copyright notice and this permission notice shall be included in all copies or
 * substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
package kr.kyg.utils.spring.web.servlet.view;

import com.google.gson.Gson;
import org.apache.commons.io.IOUtils;
import org.springframework.http.MediaType;
import org.springframework.web.servlet.view.AbstractView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.*;
import java.util.Map;

/**
 * @author 김용건
 * @since 2018-07-04
 * @version 0.1.0
 */
public class GsonView extends AbstractView {

  private static Gson gson = new Gson();

  @Override
  protected void renderMergedOutputModel(Map model, HttpServletRequest request, HttpServletResponse response) throws Exception {
    response.setContentType(MediaType.APPLICATION_JSON_UTF8_VALUE);
    final Writer resWriter = response.getWriter();

    try {
      String json = gson.toJson(model);
      final Reader jsonReader = new BufferedReader(new StringReader(json));

      IOUtils.copy(jsonReader, resWriter);

      resWriter.flush();
    } catch (IOException e) {
      e.printStackTrace();
    } finally{
      resWriter.close();
    }
  }
}