content: package com.open.capacity.activiti.rest.editor.model;
  
  import com.alibaba.fastjson.JSON;
  import com.alibaba.fastjson.JSONObject;
  import lombok.extern.slf4j.Slf4j;
  import org.activiti.editor.constants.ModelDataJsonConstants;
  import org.activiti.engine.ActivitiException;
  import org.activiti.engine.RepositoryService;
  import org.activiti.engine.repository.Model;
  import org.apache.batik.transcoder.TranscoderInput;
  import org.apache.batik.transcoder.TranscoderOutput;
  import org.apache.batik.transcoder.image.PNGTranscoder;
  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.http.HttpStatus;
  import org.springframework.web.bind.annotation.*;
  
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  import java.io.ByteArrayInputStream;
  import java.io.ByteArrayOutputStream;
  import java.io.InputStream;
  import java.util.Map;
  
  /**
   * @author Tijs Rademakers
   */
  @RestController
  @RequestMapping("service")
  @Slf4j
  public class ModelSaveRestResource implements ModelDataJsonConstants {
  
      @Autowired
      private RepositoryService repositoryService;
  
  
      @PostMapping(value = "/model/{modelId}/save")
      @ResponseStatus(value = HttpStatus.OK)
      public void saveModel(@PathVariable String modelId
              , String name, String description
              , String json_xml, String svg_xml, HttpServletRequest request, HttpServletResponse response) {
          try {
              Map<String, String[]> map = request.getParameterMap();
              JSONObject jsonObject = new JSONObject();
              //全跑到key了，可取方案
              for (Map.Entry<String, String[]> entry : map.entrySet()) {
                  if (entry.getKey().equals("token")) {
                      continue;
                  }
                  String data = entry.getKey() + "=" + (entry.getValue()[0]);
                  jsonObject = JSON.parseObject(data);
              }
              name = (String) jsonObject.get("name");
              description = (String) jsonObject.get("description");
              json_xml = (String) jsonObject.get("json_xml");
              svg_xml = (String) jsonObject.get("svg_xml");
  
              Model model = repositoryService.getModel(modelId);
              JSONObject object = new JSONObject();
              object.put(MODEL_NAME, name);
              object.put(MODEL_DESCRIPTION, description);
              model.setMetaInfo(object.toString());
              model.setName(name);
              repositoryService.saveModel(model);
  
              repositoryService.addModelEditorSource(model.getId(), json_xml.getBytes("utf-8"));
  
              InputStream svgStream = new ByteArrayInputStream(svg_xml.getBytes("utf-8"));
              TranscoderInput input = new TranscoderInput(svgStream);
  
              PNGTranscoder transcoder = new PNGTranscoder();
              // Setup output
              ByteArrayOutputStream outStream = new ByteArrayOutputStream();
              TranscoderOutput output = new TranscoderOutput(outStream);
  
              // Do the transformation
              transcoder.transcode(input, output);
              final byte[] result = outStream.toByteArray();
              repositoryService.addModelEditorSourceExtra(model.getId(), result);
              outStream.close();
  
          } catch (Exception e) {
              log.error("Error saving model", e);
              throw new ActivitiException("Error saving model", e);
          }
      }
  }
  