使用Activity和SSM框架搭建的Maven项目 工作流实现请假实例 附带前端页面 可以直接运行

package org.xdemo.example.activiti.controller; import java.awt.image.BufferedImage; import java.io.IOException; import java.io.InputStream; import java.util.HashMap; import java.util.List; import java.util.Map; import javax.annotation.Resource; import javax.imageio.ImageIO; import javax.servlet.http.HttpServletResponse; import org.activiti.engine.ProcessEngine; import org.activiti.engine.RepositoryService; import org.activiti.engine.RuntimeService; import org.activiti.engine.TaskService; import org.activiti.engine.impl.cmd.GetDeploymentProcessDiagramCmd; import org.activiti.engine.impl.interceptor.Command; import org.activiti.engine.repository.ProcessDefinition; import org.activiti.engine.runtime.ProcessInstance; import org.activiti.engine.task.Task; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.servlet.ModelAndView; @Controller @RequestMapping("/process") public class ActivitiController { @Resource ProcessEngine engine; /** * 列出所有流程模板 */ @RequestMapping(method = RequestMethod.GET) public ModelAndView list(ModelAndView mav) { mav.addObject("list", Util.list()); mav.setViewName("process/template"); return mav; } /** * 部署流程 */ @RequestMapping("deploy") public ModelAndView deploy(String processName, ModelAndView mav) { RepositoryService service = engine.getRepositoryService(); if (null != processName) service.createDeployment() .addClasspathResource("diagrams/" + processName).deploy(); List<ProcessDefinition> list = service.createProcessDefinitionQuery() .list(); mav.addObject("list", list); mav.setViewName("process/deployed"); return mav; } /** * 已部署流程列表 */ @RequestMapping("deployed") public ModelAndView deployed(ModelAndView mav) { RepositoryService service = engine.getRepositoryService(); List<ProcessDefinition> list = service.createProcessDefinitionQuery() .list(); mav.addObject("list", list); mav.setViewName("process/deployed"); return mav; } /** * 启动一个流程实例 */ @SuppressWarnings("unchecked") @RequestMapping("start") public ModelAndView start(String id, ModelAndView mav) { RuntimeService service = engine.getRuntimeService(); service.startProcessInstanceById(id); List<ProcessInstance> list = service.createProcessInstanceQuery() .list(); mav.addObject("list", list); mav.setViewName("process/started"); return mav; } /** * 所有已启动流程实例 */ @RequestMapping("started") public ModelAndView started(ModelAndView mav) { RuntimeService service = engine.getRuntimeService(); List<ProcessInstance> list = service.createProcessInstanceQuery() .list(); mav.addObject("list", list); mav.setViewName("process/started"); return mav; } @RequestMapping("task") public ModelAndView task(ModelAndView mav){ TaskService service=engine.getTaskService(); List<Task> list=service.createTaskQuery().list(); mav.addObject("list", list); mav.setViewName("process/task"); return mav; } @RequestMapping("complete") public ModelAndView complete(ModelAndView mav,String id){ TaskService service=engine.getTaskService(); service.complete(id); return new ModelAndView("redirect:task"); } /** * 所有已启动流程实例 * * @throws IOException */ @RequestMapping("graphics") public void graphics(String definitionId, String instanceId, String taskId, ModelAndView mav, HttpServletResponse response) throws IOException { response.setContentType("image/png"); Command<InputStream> cmd = null; if (definitionId != null) { cmd = new GetDeploymentProcessDiagramCmd(definitionId); } if (instanceId != null) { cmd = new ProcessInstanceDiagramCmd(instanceId); } if (taskId != null) { Task task = engine.getTaskService().createTaskQuery().taskId(taskId).singleResult(); cmd = new ProcessInstanceDiagramCmd( task.getProcessInstanceId()); } if (cmd != null) { InputStream is = engine.getManagementService().executeCommand(cmd); int len = 0; byte[] b = new byte[1024]; while ((len = is.read(b, 0, 1024)) != -1) { response.getOutputStream().write(b, 0, len); } } } }