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();
}
}