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tgtools.activiti.modeler.gateway.ModelController Maven / Gradle / Ivy
package tgtools.activiti.modeler.gateway;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.ObjectNode;
import org.activiti.bpmn.converter.BpmnXMLConverter;
import org.activiti.bpmn.model.BpmnModel;
import org.activiti.editor.language.json.converter.BpmnJsonConverter;
import org.activiti.engine.ActivitiException;
import org.activiti.engine.ProcessEngine;
import org.activiti.engine.ProcessEngines;
import org.activiti.engine.RepositoryService;
import org.activiti.engine.impl.util.ReflectUtil;
import org.activiti.engine.repository.Deployment;
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.apache.commons.io.IOUtils;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.servlet.ModelAndView;
import tgtools.web.entity.GridData;
import javax.servlet.http.HttpServletResponse;
import java.io.*;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
* activiti 模型设计器处理类
*/
@RequestMapping("/activiti")
@RestController
public class ModelController {
protected static final Logger LOGGER = LoggerFactory.getLogger(ModelController.class);
String MODEL_ID = "modelId";
String MODEL_NAME = "name";
String MODEL_REVISION = "revision";
String MODEL_DESCRIPTION = "description";
@Autowired
private RepositoryService repositoryService;
@Autowired
private ObjectMapper objectMapper;
@RequestMapping(value = "/model", method = {RequestMethod.GET})
ModelAndView model() {
return new ModelAndView("act/model/model");
}
@RequestMapping(value = "/model/list", method = {RequestMethod.POST})
public GridData list(@RequestParam("pageIndex") int pIndex, @RequestParam("pageSize") int pPageSize) {
ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine();
long count = processEngine.getRepositoryService().createModelQuery().count();
List models = processEngine.getRepositoryService().createModelQuery().orderByCreateTime().asc().listPage((pIndex*pPageSize), pPageSize);
GridData entity = new GridData();
entity.setTotalRows((int) count);
entity.setCurPage(1);
entity.setData(models);
return entity;
}
@RequestMapping(value = "/model/add", method = {RequestMethod.GET})
public ResponseCode newModel(HttpServletResponse response) throws UnsupportedEncodingException {
//初始化一个空模型
Model model = repositoryService.newModel();
//设置一些默认信息
String name = "new-process";
String description = "";
int revision = 1;
String key = "process";
ObjectNode modelNode = objectMapper.createObjectNode();
modelNode.put(MODEL_NAME, name);
modelNode.put(MODEL_DESCRIPTION, description);
modelNode.put(MODEL_REVISION, revision);
model.setName(name);
model.setKey(key);
model.setMetaInfo(modelNode.toString());
repositoryService.saveModel(model);
String id = model.getId();
//完善ModelEditorSource
ObjectNode editorNode = objectMapper.createObjectNode();
editorNode.put("id", "canvas");
editorNode.put("resourceId", "canvas");
ObjectNode stencilSetNode = objectMapper.createObjectNode();
stencilSetNode.put("namespace",
"http://b3mn.org/stencilset/bpmn2.0#");
editorNode.put("stencilset", stencilSetNode);
repositoryService.addModelEditorSource(id, editorNode.toString().getBytes("utf-8"));
ResponseCode rc=ResponseCode.ok(id);
rc.put("success",true);
rc.put("data",id);
return rc;
}
@RequestMapping(value = "/model/{modelId}/json", method = {RequestMethod.GET})
public ObjectNode getEditorJson(@PathVariable String modelId) {
ObjectNode modelNode = null;
Model model = repositoryService.getModel(modelId);
if (model != null) {
try {
if (StringUtils.isNotEmpty(model.getMetaInfo())) {
modelNode = (ObjectNode) objectMapper.readTree(model.getMetaInfo());
} else {
modelNode = objectMapper.createObjectNode();
modelNode.put(MODEL_NAME, model.getName());
}
modelNode.put(MODEL_ID, model.getId());
ObjectNode editorJsonNode = (ObjectNode) objectMapper.readTree(
new String(repositoryService.getModelEditorSource(model.getId()), "utf-8"));
modelNode.put("model", editorJsonNode);
} catch (Exception e) {
LOGGER.error("Error creating model JSON", e);
throw new ActivitiException("Error creating model JSON", e);
}
}
return modelNode;
}
@RequestMapping(value = "/editor/stencilset", method = RequestMethod.GET, produces = "application/json;charset=utf-8")
public String getStencilset() {
InputStream stencilsetStream = ReflectUtil.getResourceAsStream("tgtools/activiti/stencilset.json");
try {
return IOUtils.toString(stencilsetStream, "utf-8");
} catch (Exception e) {
throw new ActivitiException("Error while loading stencil set", e);
} finally {
if (null != stencilsetStream) {
try {
stencilsetStream.close();
} catch (IOException e) {
LOGGER.error("stencilsetStream 释放出错；原因：" + e.getMessage(), e);
}
}
}
}
@RequestMapping(value = "/model/edit/{id}", method = RequestMethod.GET)
public void edit(HttpServletResponse response, @PathVariable("id") String id) {
try {
response.sendRedirect("/modeler.html?modelId=" + id);
} catch (IOException e) {
e.printStackTrace();
}
}
@RequestMapping(value = "/model/remove/{id}", method = RequestMethod.POST)
public ResponseCode remove(@PathVariable("id") String id) {
repositoryService.deleteModel(id);
return ResponseCode.ok();
}
@RequestMapping(value = "/model/deploy/{id}", method = RequestMethod.POST)
public ResponseCode deploy(@PathVariable("id") String id) throws Exception {
//获取模型
Model modelData = repositoryService.getModel(id);
byte[] bytes = repositoryService.getModelEditorSource(modelData.getId());
if (bytes == null) {
return ResponseCode.error("模型数据为空，请先设计流程并成功保存，再进行发布。");
}
JsonNode modelNode = new ObjectMapper().readTree(bytes);
BpmnModel model = new BpmnJsonConverter().convertToBpmnModel(modelNode);
if (model.getProcesses().size() == 0) {
return ResponseCode.error("数据模型不符要求，请至少设计一条主线流程。");
}
byte[] bpmnBytes = new BpmnXMLConverter().convertToXML(model);
//发布流程
String processName = modelData.getName() + ".bpmn20.xml";
Deployment deployment = repositoryService.createDeployment()
.name(modelData.getName())
.addString(processName, new String(bpmnBytes, "UTF-8"))
.deploy();
modelData.setDeploymentId(deployment.getId());
repositoryService.saveModel(modelData);
return ResponseCode.ok();
}
@RequestMapping(value = "/model/batchRemove", method = RequestMethod.POST)
public ResponseCode batchRemove(@RequestParam("ids[]") String[] ids) {
for (String id : ids) {
repositoryService.deleteModel(id);
}
return ResponseCode.ok();
}
@RequestMapping(value = "/model/{modelId}/save", method = RequestMethod.PUT)
@ResponseStatus(value = HttpStatus.OK)
public void saveModel(@PathVariable String modelId
, String name, String description
, String json_xml, String svg_xml) {
try {
Model model = repositoryService.getModel(modelId);
ObjectNode modelJson = (ObjectNode) objectMapper.readTree(model.getMetaInfo());
modelJson.put(MODEL_NAME, name);
modelJson.put(MODEL_DESCRIPTION, description);
model.setMetaInfo(modelJson.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) {
LOGGER.error("Error saving model", e);
throw new ActivitiException("Error saving model", e);
}
}
@RequestMapping(value = "/model/export/{id}", method = RequestMethod.GET)
public void exportToXml(@PathVariable("id") String id, HttpServletResponse response) {
try {
Model modelData = repositoryService.getModel(id);
BpmnJsonConverter jsonConverter = new BpmnJsonConverter();
JsonNode editorNode = new ObjectMapper().readTree(repositoryService.getModelEditorSource(modelData.getId()));
BpmnModel bpmnModel = jsonConverter.convertToBpmnModel(editorNode);
BpmnXMLConverter xmlConverter = new BpmnXMLConverter();
byte[] bpmnBytes = xmlConverter.convertToXML(bpmnModel);
ByteArrayInputStream in = new ByteArrayInputStream(bpmnBytes);
IOUtils.copy(in, response.getOutputStream());
String filename = bpmnModel.getMainProcess().getId() + ".bpmn20.xml";
response.setHeader("Content-Disposition", "attachment; filename=" + filename);
response.flushBuffer();
} catch (Exception e) {
throw new ActivitiException("导出model的xml文件失败，模型ID=" + id, e);
}
}
private static class PageUtils implements Serializable {
private static final long serialVersionUID = 1L;
private int total;
private List rows;
public PageUtils(List list, int total) {
this.rows = list;
this.total = total;
}
public int getTotal() {
return total;
}
public void setTotal(int total) {
this.total = total;
}
public List getRows() {
return rows;
}
public void setRows(List rows) {
this.rows = rows;
}
}
private static class ResponseCode extends HashMap {
private static final long serialVersionUID = 1L;
public ResponseCode() {
put("code", 0);
put("msg", "操作成功");
}
public static ResponseCode error() {
return error(1, "操作失败");
}
public static ResponseCode error(String msg) {
return error(500, msg);
}
public static ResponseCode error(int code, String msg) {
ResponseCode r = new ResponseCode();
r.put("code", code);
r.put("msg", msg);
return r;
}
public static ResponseCode ok(String msg) {
ResponseCode r = new ResponseCode();
r.put("msg", msg);
return r;
}
public static ResponseCode ok(Map map) {
ResponseCode r = new ResponseCode();
r.putAll(map);
return r;
}
public static ResponseCode ok() {
return new ResponseCode();
}
@Override
public ResponseCode put(String key, Object value) {
super.put(key, value);
return this;
}
}
}
