/**
* 查看流程定义图
*
* @param request
* @param processDefId 流程定义id
* @return
*/
@RequestMapping(value = "/viewprocessDefImage.do")
public String viewprocessDefImage(
HttpServletRequest request,
HttpServletResponse response,
@RequestParam("processDefId") String processDefId)
throws Exception {
// 根据流程定义id查询流程定义
ProcessDefinition processDefinition =
repositoryService
.createProcessDefinitionQuery()
.processDefinitionId(processDefId)
.singleResult();
InputStream inputStream =
repositoryService.getResourceAsStream(
processDefinition.getDeploymentId(), processDefinition.getDiagramResourceName());
// // 输出资源内容到相应对象
// byte[] b = new byte[1024];
// int len;
// while ((len = inputStream.read(b, 0, 1024)) != -1) {
// response.getOutputStream().write(b, 0, len);
// }
response.getOutputStream().write(IoUtil.readInputStream(inputStream, "processDefInputStream"));
return null;
}
/**
* 删除执行流程
*
* @param request
* @param processDefId
* @return
*/
@RequestMapping(value = "/remove.do")
public String remove(
HttpServletRequest request, @RequestParam("processDefId") String processDefId) {
repositoryService.deleteDeployment(processDefId);
return "redirect:/simple/index.do";
}
/**
* 部署
*
* @param file
* @return
*/
@RequestMapping(value = "/deploy.do")
public String deploy(@RequestParam(value = "file", required = false) MultipartFile file) {
String fileName = file.getOriginalFilename();
try {
InputStream fileInputStream = file.getInputStream();
repositoryService.createDeployment().addInputStream(fileName, fileInputStream).deploy();
} catch (Exception e) {
}
return "redirect:/simple/index.do";
}
/**
* 个人任务首页
*
* @return
*/
@RequestMapping("/index.do")
public String index(HttpServletRequest request, HttpServletResponse response, Model model) {
User user =
request.getSession(true).getAttribute("user") == null
? null
: (User) request.getSession(true).getAttribute("user");
List<Group> groups =
request.getSession(true).getAttribute("groups") == null
? null
: (List<Group>) request.getSession(true).getAttribute("groups");
if (null == user) {
return "redirect:/simple/login.do";
} else {
model.addAttribute("user", user);
model.addAttribute("groups", groups);
/** */
List<ProcessDefinition> pdList = repositoryService.createProcessDefinitionQuery().list();
model.addAttribute("pdList", pdList);
/** 该用户所有可以认领的任务 */
List<Task> groupTasks = taskService.createTaskQuery().taskCandidateUser(user.getId()).list();
List<Task> userTasks = taskService.createTaskQuery().taskAssignee(user.getId()).list();
model.addAttribute("userTasks", userTasks);
model.addAttribute("groupTasks", groupTasks);
/** 查看任务实例 */
List<Task> taskList = taskService.createTaskQuery().list();
model.addAttribute("taskList", taskList);
/** 历史流程 */
List<HistoricProcessInstance> hpiList =
historyService.createHistoricProcessInstanceQuery().finished().list();
model.addAttribute("hpiList", hpiList);
}
return "/simple/index";
}
/**
* 显示图片
*
* @return
*/
@RequestMapping(value = "/viewPic.do")
public void viewPic(
HttpServletRequest request,
HttpServletResponse response,
@RequestParam("executionId") String executionId)
throws Exception {
ProcessInstance processInstance =
runtimeService.createProcessInstanceQuery().processInstanceId(executionId).singleResult();
BpmnModel bpmnModel = repositoryService.getBpmnModel(processInstance.getProcessDefinitionId());
List<String> activeActivityIds = runtimeService.getActiveActivityIds(executionId);
// 使用spring注入引擎请使用下面的这行代码
Context.setProcessEngineConfiguration(processEngine.getProcessEngineConfiguration());
InputStream imageStream =
ProcessDiagramGenerator.generateDiagram(bpmnModel, "png", activeActivityIds);
// 输出资源内容到相应对象
byte[] b = new byte[1024];
int len;
while ((len = imageStream.read(b, 0, 1024)) != -1) {
response.getOutputStream().write(b, 0, len);
}
}