modeler与activiti进行整合

整合Activiti Modeler到业务系统（或BPM平台） 
http://www.kafeitu.me/activiti/2013/03/10/integrate-activiti-modeler.html

activit 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....

1. $(function() {
2. $('#create').button({
3. icons: {
4. primary: 'ui-icon-plus'
5. }
6. }).click(function() {
7. $('#createModelTemplate').dialog({
8. modal: true,
9. width: 500,
10. buttons: [{
11. text: '创建',
12. click: function() {
13. if (!$('#name').val()) {
14. alert('请填写名称！');
15. $('#name').focus();
16. return;
17. }
18. setTimeout(function() {
19. location.reload();
20. }, 1000);
21. $('#modelForm').submit();
22. }
23. }]
24. });
25. });
26. });

1. @RequestMapping(value = "create", method = RequestMethod.POST)
2. public void create(@RequestParam("name") String name, @RequestParam("key") String key, @RequestParam("description") String description,
3. HttpServletRequest request, HttpServletResponse response) {
4. try {
5. ObjectMapper objectMapper = new ObjectMapper();
6. ObjectNode editorNode = objectMapper.createObjectNode();
7. editorNode.put("id", "canvas");
8. editorNode.put("resourceId", "canvas");
9. ObjectNode stencilSetNode = objectMapper.createObjectNode();
10. stencilSetNode.put("namespace", "http://b3mn.org/stencilset/bpmn2.0#");
11. editorNode.put("stencilset", stencilSetNode);
12. Model modelData = repositoryService.newModel();
13. ObjectNode modelObjectNode = objectMapper.createObjectNode();
14. modelObjectNode.put(ModelDataJsonConstants.MODEL_NAME, name);
15. modelObjectNode.put(ModelDataJsonConstants.MODEL_REVISION, 1);
16. description = StringUtils.defaultString(description);
17. modelObjectNode.put(ModelDataJsonConstants.MODEL_DESCRIPTION, description);
18. modelData.setMetaInfo(modelObjectNode.toString());
19. modelData.setName(name);
20. modelData.setKey(StringUtils.defaultString(key));
21. repositoryService.saveModel(modelData);
22. repositoryService.addModelEditorSource(modelData.getId(), editorNode.toString().getBytes("utf-8"));
23. response.sendRedirect(request.getContextPath() + "/service/editor?id=" + modelData.getId());
24. } catch (Exception e) {
25. logger.error("创建模型失败：", e);
26. }
27. }

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

1. package me.kafeitu.demo.activiti.web.workflow;
2. import java.io.ByteArrayInputStream;
3. import java.util.List;
4. import javax.servlet.http.HttpServletRequest;
5. import javax.servlet.http.HttpServletResponse;
6. import org.activiti.bpmn.converter.BpmnXMLConverter;
7. import org.activiti.bpmn.model.BpmnModel;
8. import org.activiti.editor.constants.ModelDataJsonConstants;
9. import org.activiti.editor.language.json.converter.BpmnJsonConverter;
10. import org.activiti.engine.RepositoryService;
11. import org.activiti.engine.repository.Deployment;
12. import org.activiti.engine.repository.Model;
13. import org.apache.commons.io.IOUtils;
14. import org.apache.commons.lang3.StringUtils;
15. import org.codehaus.jackson.JsonNode;
16. import org.codehaus.jackson.map.ObjectMapper;
17. import org.codehaus.jackson.node.ObjectNode;
18. import org.slf4j.Logger;
19. import org.slf4j.LoggerFactory;
20. import org.springframework.beans.factory.annotation.Autowired;
21. import org.springframework.stereotype.Controller;
22. import org.springframework.web.bind.annotation.PathVariable;
23. import org.springframework.web.bind.annotation.RequestMapping;
24. import org.springframework.web.bind.annotation.RequestMethod;
25. import org.springframework.web.bind.annotation.RequestParam;
26. import org.springframework.web.servlet.ModelAndView;
27. import org.springframework.web.servlet.mvc.support.RedirectAttributes;
28. /**
29. * 流程模型控制器
30. *
31. * @author henryyan
32. */
33. @Controller
34. @RequestMapping(value = "/workflow/model")
35. public class ModelController {
36. protected Logger logger = LoggerFactory.getLogger(getClass());
37. @Autowired
38. RepositoryService repositoryService;
39. /**
40. * 模型列表
41. */
42. @RequestMapping(value = "list")
43. public ModelAndView modelList() {
44. ModelAndView mav = new ModelAndView("workflow/model-list");
45. List<Model> list = repositoryService.createModelQuery().list();
46. mav.addObject("list", list);
47. return mav;
48. }
49. /**
50. * 创建模型
51. */
52. @RequestMapping(value = "create", method = RequestMethod.POST)
53. public void create(@RequestParam("name") String name, @RequestParam("key") String key, @RequestParam("description") String description,
54. HttpServletRequest request, HttpServletResponse response) {
55. try {
56. ObjectMapper objectMapper = new ObjectMapper();
57. ObjectNode editorNode = objectMapper.createObjectNode();
58. editorNode.put("id", "canvas");
59. editorNode.put("resourceId", "canvas");
60. ObjectNode stencilSetNode = objectMapper.createObjectNode();
61. stencilSetNode.put("namespace", "http://b3mn.org/stencilset/bpmn2.0#");
62. editorNode.put("stencilset", stencilSetNode);
63. Model modelData = repositoryService.newModel();
64. ObjectNode modelObjectNode = objectMapper.createObjectNode();
65. modelObjectNode.put(ModelDataJsonConstants.MODEL_NAME, name);
66. modelObjectNode.put(ModelDataJsonConstants.MODEL_REVISION, 1);
67. description = StringUtils.defaultString(description);
68. modelObjectNode.put(ModelDataJsonConstants.MODEL_DESCRIPTION, description);
69. modelData.setMetaInfo(modelObjectNode.toString());
70. modelData.setName(name);
71. modelData.setKey(StringUtils.defaultString(key));
72. repositoryService.saveModel(modelData);
73. repositoryService.addModelEditorSource(modelData.getId(), editorNode.toString().getBytes("utf-8"));
74. response.sendRedirect(request.getContextPath() + "/service/editor?id=" + modelData.getId());
75. } catch (Exception e) {
76. logger.error("创建模型失败：", e);
77. }
78. }
79. /**
80. * 根据Model部署流程
81. */
82. @RequestMapping(value = "deploy/{modelId}")
83. public String deploy(@PathVariable("modelId") String modelId, RedirectAttributes redirectAttributes) {
84. try {
85. Model modelData = repositoryService.getModel(modelId);
86. ObjectNode modelNode = (ObjectNode) new ObjectMapper().readTree(repositoryService.getModelEditorSource(modelData.getId()));
87. byte[] bpmnBytes = null;
88. BpmnModel model = new BpmnJsonConverter().convertToBpmnModel(modelNode);
89. bpmnBytes = new BpmnXMLConverter().convertToXML(model);
90. String processName = modelData.getName() + ".bpmn20.xml";
91. Deployment deployment = repositoryService.createDeployment().name(modelData.getName()).addString(processName, new String(bpmnBytes)).deploy();
92. redirectAttributes.addFlashAttribute("message", "部署成功，部署ID=" + deployment.getId());
93. } catch (Exception e) {
94. logger.error("根据模型部署流程失败：modelId={}", modelId, e);
95. }
96. return "redirect:/workflow/model/list";
97. }
98. /**
99. * 导出model的xml文件
100. */
101. @RequestMapping(value = "export/{modelId}")
102. public void export(@PathVariable("modelId") String modelId, HttpServletResponse response) {
103. try {
104. Model modelData = repositoryService.getModel(modelId);
105. BpmnJsonConverter jsonConverter = new BpmnJsonConverter();
106. JsonNode editorNode = new ObjectMapper().readTree(repositoryService.getModelEditorSource(modelData.getId()));
107. BpmnModel bpmnModel = jsonConverter.convertToBpmnModel(editorNode);
108. BpmnXMLConverter xmlConverter = new BpmnXMLConverter();
109. byte[] bpmnBytes = xmlConverter.convertToXML(bpmnModel);
110. ByteArrayInputStream in = new ByteArrayInputStream(bpmnBytes);
111. IOUtils.copy(in, response.getOutputStream());
112. String filename = bpmnModel.getMainProcess().getId() + ".bpmn20.xml";
113. response.setHeader("Content-Disposition", "attachment; filename=" + filename);
114. response.flushBuffer();
115. } catch (Exception e) {
116. logger.error("导出model的xml文件失败：modelId={}", modelId, e);
117. }
118. }
119. @RequestMapping(value = "delete/{modelId}")
120. public String delete(@PathVariable("modelId") String modelId) {
121. repositoryService.deleteModel(modelId);
122. return "redirect:/workflow/model/list";
123. }
124. }

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

1. <dependency>
2. <groupId>org.activiti</groupId>
3. <artifactId>activiti-engine</artifactId>
4. <version>${activiti.version}</version>
5. </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???