两篇整合Activiti Modeler到业务系统

整合Activiti Modeler到业务系统（或BPM平台）
http://www.kafeitu.me/activiti/2013/03/10/integrate-activiti-modeler.htmlactivit 5.12.1集成activiti-modeler 到自己的业务系统(集成流程跟踪-完美支持IE)http://jhaij.iteye.com/blog/1871635
根据第二篇文章，整合成功;FAQ:
1. 无法进入editor.
http://localhost:8080/YouPRJ/modeler/service/editor?id=2050，前提是这个id必需存在与act_re_model表里面，
那么，在调用这个之前，如何插入一条记录到这个表么?
待解决……..
————-
看到咖啡兔的例子，是先使用java保存到数据库，然后再打开editor, 保存的代码：
javascript: 一边保存，一边打开，同时保存后的页面又做reload, 很特别很有趣的做法，值得学习….

Js代码

$(function() {

$('#create').button({

icons: {

primary: 'ui-icon-plus'

}

}).click(function() {

$('#createModelTemplate').dialog({

modal: true,

width: 500,

buttons: [{

text: '创建',

click: function() {

if (!$('#name').val()) {

alert('请填写名称！');

$('#name').focus();

return;

}

setTimeout(function() {

location.reload();

}, 1000);

$('#modelForm').submit();

}

}]

});

Java代码

@RequestMapping(value = "create", method = RequestMethod.POST)

public void create(@RequestParam("name") String name, @RequestParam("key") String key, @RequestParam("description") String description,

HttpServletRequest request, HttpServletResponse response) {

try {

ObjectMapper objectMapper = new ObjectMapper();

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);

Model modelData = repositoryService.newModel();

ObjectNode modelObjectNode = objectMapper.createObjectNode();

modelObjectNode.put(ModelDataJsonConstants.MODEL_NAME, name);

modelObjectNode.put(ModelDataJsonConstants.MODEL_REVISION, 1);

description = StringUtils.defaultString(description);

modelObjectNode.put(ModelDataJsonConstants.MODEL_DESCRIPTION, description);

modelData.setMetaInfo(modelObjectNode.toString());

modelData.setName(name);

modelData.setKey(StringUtils.defaultString(key));

repositoryService.saveModel(modelData);

repositoryService.addModelEditorSource(modelData.getId(), editorNode.toString().getBytes("utf-8"));

response.sendRedirect(request.getContextPath() + "/service/editor?id=" + modelData.getId());

} catch (Exception e) {

logger.error("创建模型失败：", e);

}

2. web editor保存的bpmn20文件到哪里去了？
会更新ACT_RE_MODEL和ACT_GE_BYTEARRAY表，ACT_GE_BYTEARRAY表保存了图片和xml文件信息(其实是json格式的字符串)，并关联到ACT_RE_MODEL表。
ACT_RE_MODEL
说明：流程设计器设计流程后，保存数据到该表。
EDITOR_SOURCE_VALUE_ID（流程文件放在ACT_GE_BYTEARRAY中的ID）；
EDITOR_SOURCE_EXTRA_VALUE_ID(流程文件图像放在ACT_GE_BYTEARRAY中的ID)。

3. 如何去部署保存在数据库里面的ACT_RE_MODEL表里面的工作流？
咖啡兔的源码： 创建，部署，删除，导出，遍历

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Java代码

package me.kafeitu.demo.activiti.web.workflow;

import java.io.ByteArrayInputStream;

import java.util.List;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import org.activiti.bpmn.converter.BpmnXMLConverter;

import org.activiti.bpmn.model.BpmnModel;

import org.activiti.editor.constants.ModelDataJsonConstants;

import org.activiti.editor.language.json.converter.BpmnJsonConverter;

import org.activiti.engine.RepositoryService;

import org.activiti.engine.repository.Deployment;

import org.activiti.engine.repository.Model;

import org.apache.commons.io.IOUtils;

import org.apache.commons.lang3.StringUtils;

import org.codehaus.jackson.JsonNode;

import org.codehaus.jackson.map.ObjectMapper;

import org.codehaus.jackson.node.ObjectNode;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.stereotype.Controller;

import org.springframework.web.bind.annotation.PathVariable;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.RequestMethod;

import org.springframework.web.bind.annotation.RequestParam;

import org.springframework.web.servlet.ModelAndView;

import org.springframework.web.servlet.mvc.support.RedirectAttributes;

/**

* 流程模型控制器

* @author henryyan

@Controller

@RequestMapping(value = "/workflow/model")

public class ModelController {

protected Logger logger = LoggerFactory.getLogger(getClass());

@Autowired

RepositoryService repositoryService;

/**

* 模型列表

@RequestMapping(value = "list")

public ModelAndView modelList() {

ModelAndView mav = new ModelAndView("workflow/model-list");

List<Model> list = repositoryService.createModelQuery().list();

mav.addObject("list", list);

return mav;

}

/**

* 创建模型

@RequestMapping(value = "create", method = RequestMethod.POST)

public void create(@RequestParam("name") String name, @RequestParam("key") String key, @RequestParam("description") String description,

HttpServletRequest request, HttpServletResponse response) {

try {

ObjectMapper objectMapper = new ObjectMapper();

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);

Model modelData = repositoryService.newModel();

ObjectNode modelObjectNode = objectMapper.createObjectNode();

modelObjectNode.put(ModelDataJsonConstants.MODEL_NAME, name);

modelObjectNode.put(ModelDataJsonConstants.MODEL_REVISION, 1);

description = StringUtils.defaultString(description);

modelObjectNode.put(ModelDataJsonConstants.MODEL_DESCRIPTION, description);

modelData.setMetaInfo(modelObjectNode.toString());

modelData.setName(name);

modelData.setKey(StringUtils.defaultString(key));

repositoryService.saveModel(modelData);

repositoryService.addModelEditorSource(modelData.getId(), editorNode.toString().getBytes("utf-8"));

response.sendRedirect(request.getContextPath() + "/service/editor?id=" + modelData.getId());

} catch (Exception e) {

logger.error("创建模型失败：", e);

}

/**

* 根据Model部署流程

@RequestMapping(value = "deploy/{modelId}")

public String deploy(@PathVariable("modelId") String modelId, RedirectAttributes redirectAttributes) {

try {

Model modelData = repositoryService.getModel(modelId);

ObjectNode modelNode = (ObjectNode) new ObjectMapper().readTree(repositoryService.getModelEditorSource(modelData.getId()));

byte[] bpmnBytes = null;

BpmnModel model = new BpmnJsonConverter().convertToBpmnModel(modelNode);

bpmnBytes = new BpmnXMLConverter().convertToXML(model);

String processName = modelData.getName() + ".bpmn20.xml";

Deployment deployment = repositoryService.createDeployment().name(modelData.getName()).addString(processName, new String(bpmnBytes)).deploy();

redirectAttributes.addFlashAttribute("message", "部署成功，部署ID=" + deployment.getId());

} catch (Exception e) {

logger.error("根据模型部署流程失败：modelId={}", modelId, e);

}

return "redirect:/workflow/model/list";

}

/**

* 导出model的xml文件

@RequestMapping(value = "export/{modelId}")

public void export(@PathVariable("modelId") String modelId, HttpServletResponse response) {

try {

Model modelData = repositoryService.getModel(modelId);

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) {

logger.error("导出model的xml文件失败：modelId={}", modelId, e);

}

@RequestMapping(value = "delete/{modelId}")

public String delete(@PathVariable("modelId") String modelId) {

repositoryService.deleteModel(modelId);

return "redirect:/workflow/model/list";

}

问题：
1. java.lang.NoSuchMethodError: org.activiti.engine.impl.bpmn.diagram.ProcessDiagramCanvas.drawSequenceflowWithoutArrow(IIIIZZ)V
应为本地有两个工程的pom.xml都使用了

Xml代码

<groupId>org.activiti</groupId>

<artifactId>activiti-engine</artifactId>

<version>${activiti.version}</version>

</dependency>

临时关闭或者删除一个工程，就不会提示这个错误了，至于为什么？我也搞不清楚。。。网上几乎没有人碰到这个错误，莫非是我太幸运???

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两篇整合Activiti Modeler到业务系统

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