我的Activti 版本是5.13
在画流程图的时候 含有中文的流程图无法部署,看了半天源代码。直接把流程图转成base64来解决。
1.在Modeler 保存流程是调用方法org.activiti.editor.rest.model.ModelSaveRestResource
下面是修改后的完整代码 json_xml传递过来发现是gbk的,这里我转成utf8 然后在进行base64编码。
/* 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 org.activiti.editor.rest.model; import java.io.ByteArrayInputStream; import java.io.ByteArrayOutputStream; import java.io.InputStream; import org.activiti.editor.constants.ModelDataJsonConstants; import org.activiti.engine.ProcessEngines; 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.codehaus.jackson.map.ObjectMapper; import org.codehaus.jackson.node.ObjectNode; import org.restlet.data.Form; import org.restlet.data.Status; import org.restlet.resource.Put; import org.restlet.resource.ServerResource; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import sun.misc.BASE64Encoder; /** * @author Tijs Rademakers */ public class ModelSaveRestResource extends ServerResource implements ModelDataJsonConstants { protected static final Logger LOGGER = LoggerFactory .getLogger(ModelSaveRestResource.class); @Put public void saveModel(Form modelForm) { ObjectMapper objectMapper = new ObjectMapper(); String modelId = (String) getRequest().getAttributes().get("modelId"); // System.out.println("json " + modelForm.getFirstValue("json_xml")); try { /* * ObjectNode modelNode = (ObjectNode) * objectMapper.readTree(modelForm.getFirstValue("json_xml")); * JsonToBpmnExport converter = new JsonToBpmnExport(modelNode); * byte[] bpmnBytes = converter.convert(); * System.out.println("bpmn " + new String(bpmnBytes)); */ RepositoryService repositoryService = ProcessEngines .getDefaultProcessEngine().getRepositoryService(); Model model = repositoryService.getModel(modelId); ObjectNode modelJson = (ObjectNode) objectMapper.readTree(model .getMetaInfo()); modelJson.put(MODEL_NAME, modelForm.getFirstValue("name")); modelJson.put(MODEL_DESCRIPTION, modelForm.getFirstValue("description")); model.setMetaInfo(modelJson.toString()); model.setName(modelForm.getFirstValue("name")); byte[] svg_xml=modelForm.getFirstValue("svg_xml").getBytes("UTF-8"); //转成UTF-8 然后使用base64编码 String gbk=new String(modelForm.getFirstValue("json_xml").getBytes("GBK")); String iso = new String(gbk.getBytes("UTF-8"),"ISO-8859-1"); String utf8=new String(iso.getBytes("ISO-8859-1"),"UTF-8"); byte[] json_xml=new BASE64Encoder().encode(utf8.getBytes("UTF-8")).getBytes(); repositoryService.addModelEditorSource(model.getId(),json_xml); InputStream svgStream = new ByteArrayInputStream(svg_xml); 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(); repositoryService.saveModel(model); } catch (Exception e) { LOGGER.error("Error saving model", e); setStatus(Status.SERVER_ERROR_INTERNAL); } } }
2.取流程图的时候调用的是 org.activiti.engine.impl.RepositoryServiceImpl 下面是修改后的代码
public byte[] getModelEditorSource(String modelId) { //修改 byte[] json_byte= commandExecutor.execute(new GetModelEditorSourceCmd(modelId)); try { if(!new String(json_byte).startsWith("{")){ json_byte=new BASE64Decoder().decodeBuffer(new String(json_byte)); return json_byte; } } catch (IOException e) { e.printStackTrace(); } return json_byte; }
3.发布的时候 String又成了默认编码
org.activiti.editor.ui.EditorProcessDefinitionDetailPanel
String bmpnString=new String(bmpnBytes) 改为String bmpnString=new String(bmpnBytes,“utf-8”)
protected void deployModelerModel(final ObjectNode modelNode) { try { BpmnModel model = new BpmnJsonConverter().convertToBpmnModel(modelNode); byte[] bpmnBytes = new BpmnXMLConverter().convertToXML(model); String bpmnString=new String(bpmnBytes,"UTF-8"); String processName = modelData.getName() + ".bpmn20.xml"; Deployment deployment = repositoryService.createDeployment() .name(modelData.getName()) //.addString(processName, new String(bpmnBytes)) .addString(processName, bpmnString) .deploy(); ExplorerApp.get().getViewManager().showDeploymentPage(deployment.getId()); } catch (UnsupportedEncodingException e) { LOGGER.debug("发布流程xml编码错误"); e.printStackTrace(); } }