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最新评论
-
HEZR曾嶸:
你好博主,这个不是很理解,能解释一下嘛//左边+1,上边+1, ...
java 两字符串相似度计算算法 -
天使建站:
写得不错,可以看这里,和这里的这篇文章一起看,有 ...
jquery 遍历对象、数组、集合 -
xue88ming:
很有用,谢谢
@PathVariable映射出现错误: Name for argument type -
jnjeC:
厉害,困扰了我很久
MyBatis排序时使用order by 动态参数时需要注意,用$而不是# -
TopLongMan:
非常好,很实用啊。。
PostgreSQL递归查询实现树状结构查询
http://www.oecp.cn/hi/yangtaoorange/blog/5804
只需将.jpdl.xml文件传过来,就可以根据这个文件解析出来.png图片
http://javaintelligence.blogspot.com/2010/08/jboss-jbpm-generating-image-at-runtime.html
写到:
Was tested with the latest version of JBPM 4.4 and works normally.
The following is a direct access to source code containing also the icons. The icons are extracted from a JAR used by the modeler of the eclipse ide.
http://www.planetacontabil.com.br/jbpm_image_sample.jar
先看节点类的定义:
其次是Transition的定义:
类JpdlModel
根据JpdlModel绘制出流程图
工具类,用来计算一些坐标的
测试
只需将.jpdl.xml文件传过来,就可以根据这个文件解析出来.png图片
http://javaintelligence.blogspot.com/2010/08/jboss-jbpm-generating-image-at-runtime.html
写到:
Was tested with the latest version of JBPM 4.4 and works normally.
The following is a direct access to source code containing also the icons. The icons are extracted from a JAR used by the modeler of the eclipse ide.
http://www.planetacontabil.com.br/jbpm_image_sample.jar
先看节点类的定义:
public class Node { private String name; private String type; private Rectangle rectangle; private List<Transition> transitions = new ArrayList<Transition>(); public Node(String name, String type) { this.name = name; this.type = type; } public Node(String name, String type, int x, int y, int w, int h) { this.name = name; this.type = type; this.rectangle = new Rectangle(x, y, w, h); } public Rectangle getRectangle() { return rectangle; } public void setRectangle(Rectangle rectangle) { this.rectangle = rectangle; } public String getType() { return type; } public void setType(String type) { this.type = type; } public String getName() { return name; } public void setName(String name) { this.name = name; } public void addTransition(Transition transition) { transitions.add(transition); } public List<Transition> getTransitions() { return transitions; } public void setTransitions(List<Transition> transitions) { this.transitions = transitions; } public int getX() { return rectangle.x; } public int getY() { return rectangle.y; } public int getCenterX() { return (int) rectangle.getCenterX(); } public int getCenterY() { return (int) rectangle.getCenterY(); } public int getWitdth() { return rectangle.width; } public int getHeight() { return rectangle.height; } }
其次是Transition的定义:
public class Transition { private Point labelPosition; private List<Point> lineTrace = new ArrayList<Point>(); private String label; private String to; public Transition(String label, String to) { this.label = label; this.to = to; } public Point getLabelPosition() { return labelPosition; } public void setLabelPosition(Point labelPosition) { this.labelPosition = labelPosition; } public List<Point> getLineTrace() { return lineTrace; } public void setLineTrace(List<Point> lineTrace) { this.lineTrace = lineTrace; } public void addLineTrace(Point lineTrace) { if (lineTrace != null) { this.lineTrace.add(lineTrace); } } public String getLabel() { return label; } public void setLabel(String label) { this.label = label; } public String getTo() { return to; } public void setTo(String to) { this.to = to; } }
类JpdlModel
/** * CopyRight (C) 2006-2009 yy * @author yy * @project jbpm * @version 1.0 * @mail yy629_86 at 163 dot com * @date 2009-9-6 下午06:00:14 * @description */ package sofocus.bpm.jbpm.jpdl.model; import java.awt.Point; import java.io.InputStream; import java.util.HashMap; import java.util.LinkedHashMap; import java.util.List; import java.util.Map; import org.dom4j.Element; import org.dom4j.io.SAXReader; public class JpdlModel { private Map<String, Node> nodes = new LinkedHashMap<String, Node>(); public static final int RECT_OFFSET_X = -7; public static final int RECT_OFFSET_Y = -8; public static final int DEFAULT_PIC_SIZE = 48; private final static Map<String, Object> nodeInfos = new HashMap<String, Object>(); static { nodeInfos.put("start", "start_event_empty.png"); nodeInfos.put("end", "end_event_terminate.png"); nodeInfos.put("end-cancel", "end_event_cancel.png"); nodeInfos.put("end-error", "end_event_error.png"); nodeInfos.put("decision", "gateway_exclusive.png"); nodeInfos.put("fork", "gateway_parallel.png"); nodeInfos.put("join", "gateway_parallel.png"); nodeInfos.put("state", null); nodeInfos.put("hql", null); nodeInfos.put("sql", null); nodeInfos.put("java", null); nodeInfos.put("script", null); nodeInfos.put("task", null); nodeInfos.put("sub-process", null); nodeInfos.put("custom", null); } public JpdlModel(InputStream is) throws Exception { this(new SAXReader().read(is).getRootElement()); } @SuppressWarnings("unchecked") private JpdlModel(Element rootEl) throws Exception { for (Element el : (List<Element>) rootEl.elements()) { String type = el.getQName().getName(); if (!nodeInfos.containsKey(type)) { // 不是可展示的节点 continue; } String name = null; if (el.attribute("name") != null) { name = el.attributeValue("name"); } String[] location = el.attributeValue("g").split(","); int x = Integer.parseInt(location[0]); int y = Integer.parseInt(location[1]); int w = Integer.parseInt(location[2]); int h = Integer.parseInt(location[3]); if (nodeInfos.get(type) != null) { w = DEFAULT_PIC_SIZE; h = DEFAULT_PIC_SIZE; } else { x -= RECT_OFFSET_X; y -= RECT_OFFSET_Y; w += (RECT_OFFSET_X + RECT_OFFSET_X); h += (RECT_OFFSET_Y + RECT_OFFSET_Y); } Node node = new Node(name, type, x, y, w, h); parserTransition(node, el); nodes.put(name, node); } } @SuppressWarnings("unchecked") private void parserTransition(Node node, Element nodeEl) { for (Element el : (List<Element>) nodeEl.elements("transition")) { String label = el.attributeValue("name"); String to = el.attributeValue("to"); Transition transition = new Transition(label, to); String g = el.attributeValue("g"); if (g != null && g.length() > 0) { if (g.indexOf(":") < 0) { transition.setLabelPosition(getPoint(g)); } else { String[] p = g.split(":"); transition.setLabelPosition(getPoint(p[1])); String[] lines = p[0].split(";"); for (String line : lines) { transition.addLineTrace(getPoint(line)); } } } node.addTransition(transition); } } private Point getPoint(String exp) { if (exp == null || exp.length() == 0) { return null; } String[] p = exp.split(","); return new Point(Integer.valueOf(p[0]), Integer.valueOf(p[1])); } public Map<String, Node> getNodes() { return nodes; } public static Map<String, Object> getNodeInfos() { return nodeInfos; } }
根据JpdlModel绘制出流程图
/** * CopyRight (C) 2006-2009 yy * @author yy * @project Jbpm * @version 1.0 * @mail yy629_86 at 163 dot com * @date 2009-9-6 下午06:00:14 * @description */ package sofocus.bpm.jbpm.jpdl; import java.awt.*; import java.awt.font.FontRenderContext; import java.awt.geom.Rectangle2D; import java.awt.image.BufferedImage; import java.io.IOException; import java.util.List; import java.util.Map; import javax.imageio.ImageIO; import sofocus.bpm.jbpm.jpdl.model.JpdlModel; import sofocus.bpm.jbpm.jpdl.model.Node; import sofocus.bpm.jbpm.jpdl.model.Transition; /** * @author yeyong * */ public class JpdlModelDrawer { public static final int RECT_OFFSET_X = JpdlModel.RECT_OFFSET_X; public static final int RECT_OFFSET_Y = JpdlModel.RECT_OFFSET_Y; public static final int RECT_ROUND = 25; public static final int DEFAULT_FONT_SIZE = 12; public static final Color DEFAULT_STROKE_COLOR = Color.decode("#03689A"); public static final Stroke DEFAULT_STROKE = new BasicStroke(2); public static final Color DEFAULT_LINE_STROKE_COLOR = Color.decode("#808080"); public static final Stroke DEFAULT_LINE_STROKE = new BasicStroke(1); public static final Color DEFAULT_FILL_COLOR = Color.decode("#F6F7FF"); private final static Map<String, Object> nodeInfos = JpdlModel.getNodeInfos(); public BufferedImage draw(JpdlModel jpdlModel) throws IOException { Rectangle dimension = getCanvasDimension(jpdlModel); BufferedImage bi = new BufferedImage(dimension.width, dimension.height, BufferedImage.TYPE_INT_ARGB); Graphics2D g2 = bi.createGraphics(); g2.setColor(Color.WHITE); g2.fillRect(0, 0, dimension.width, dimension.height); g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); Font font = new Font("宋体", Font.PLAIN, DEFAULT_FONT_SIZE); g2.setFont(font); Map<String, Node> nodes = jpdlModel.getNodes(); drawNode(nodes, g2, font); drawTransition(nodes, g2); return bi; } /** * 获得图片的矩形大小 * * @return */ private Rectangle getCanvasDimension(JpdlModel jpdlModel) { Rectangle rectangle = new Rectangle(); Rectangle rect; for (Node node : jpdlModel.getNodes().values()) { rect = node.getRectangle(); if (rect.getMaxX() > rectangle.getMaxX()) { rectangle.width = (int) rect.getMaxX(); } if (rect.getMaxY() > rectangle.getMaxY()) { rectangle.height = (int) rect.getMaxY(); } for (Transition transition : node.getTransitions()) { List<Point> trace = transition.getLineTrace(); for (Point point : trace) { if (rectangle.getMaxX() < point.x) { rectangle.width = point.x; } if (rectangle.getMaxY() < point.y) { rectangle.height = point.y; } } } } rectangle.width += 60; rectangle.height += 20; return rectangle; } /** * @param g2 * @throws IOException */ private void drawTransition(Map<String, Node> nodes, Graphics2D g2) throws IOException { g2.setStroke(DEFAULT_LINE_STROKE); g2.setColor(DEFAULT_LINE_STROKE_COLOR); for (Node node : nodes.values()) { for (Transition transition : node.getTransitions()) { String to = transition.getTo(); Node toNode = nodes.get(to); List<Point> trace = new LinkedList<Point>(transition.getLineTrace()); int len = trace.size() + 2; trace.add(0, new Point(node.getCenterX(), node.getCenterY())); trace.add(new Point(toNode.getCenterX(), toNode.getCenterY())); int[] xPoints = new int[len]; int[] yPoints = new int[len]; for (int i = 0; i < len; i++) { xPoints[i] = trace.get(i).x; yPoints[i] = trace.get(i).y; } final int taskGrow = 4; final int smallGrow = -2; int grow = 0; if (nodeInfos.get(node.getType()) != null) { grow = smallGrow; } else { grow = taskGrow; } Point p = GeometryUtils.getRectangleLineCrossPoint(node.getRectangle(), new Point(xPoints[1], yPoints[1]), grow); if (p != null) { xPoints[0] = p.x; yPoints[0] = p.y; } if (nodeInfos.get(toNode.getType()) != null) { grow = smallGrow; } else { grow = taskGrow; } p = GeometryUtils.getRectangleLineCrossPoint(toNode.getRectangle(), new Point(xPoints[len - 2], yPoints[len - 2]), grow); if (p != null) { xPoints[len - 1] = p.x; yPoints[len - 1] = p.y; } g2.drawPolyline(xPoints, yPoints, len); drawArrow(g2, xPoints[len - 2], yPoints[len - 2], xPoints[len - 1], yPoints[len - 1]); String label = transition.getLabel(); if (label != null && label.length() > 0) { int cx, cy; if (len % 2 == 0) { cx = (xPoints[len / 2 - 1] + xPoints[len / 2]) / 2; cy = (yPoints[len / 2 - 1] + yPoints[len / 2]) / 2; } else { cx = xPoints[len / 2]; cy = yPoints[len / 2]; } Point labelPoint = transition.getLabelPosition(); if (labelPoint != null) { cx += labelPoint.x; cy += labelPoint.y; } cy -= RECT_OFFSET_Y + RECT_OFFSET_Y / 2; g2.drawString(label, cx, cy); } } } } private void drawArrow(Graphics2D g2, int x1, int y1, int x2, int y2) { final double len = 8.0; double slopy = Math.atan2(y2 - y1, x2 - x1); double cosy = Math.cos(slopy); double siny = Math.sin(slopy); int[] xPoints = { 0, x2, 0 }; int[] yPoints = { 0, y2, 0 }; double a = len * siny, b = len * cosy; double c = len / 2.0 * siny, d = len / 2.0 * cosy; xPoints[0] = x2 - (int) (b + c); yPoints[0] = y2 - (int) (a - d); xPoints[2] = x2 - (int) (b - c); yPoints[2] = y2 - (int) (d + a); g2.fillPolygon(xPoints, yPoints, 3); } /** * @param g2 * @throws IOException */ private void drawNode(Map<String, Node> nodes, Graphics2D g2, Font font) throws IOException { for (Node node : nodes.values()) { String name = node.getName(); if (nodeInfos.get(node.getType()) != null) { BufferedImage bi2 = ImageIO.read(getClass().getResourceAsStream( "/icons/48/" + nodeInfos.get(node.getType()))); g2.drawImage(bi2, node.getX(), node.getY(), null); } else { int x = node.getX(); int y = node.getY(); int w = node.getWitdth(); int h = node.getHeight(); g2.setColor(DEFAULT_FILL_COLOR); g2.fillRoundRect(x, y, w, h, RECT_ROUND, RECT_ROUND); g2.setColor(DEFAULT_STROKE_COLOR); g2.setStroke(DEFAULT_STROKE); g2.drawRoundRect(x, y, w, h, RECT_ROUND, RECT_ROUND); FontRenderContext frc = g2.getFontRenderContext(); Rectangle2D r2 = font.getStringBounds(name, frc); int xLabel = (int) (node.getX() + ((node.getWitdth() - r2.getWidth()) / 2)); int yLabel = (int) ((node.getY() + ((node.getHeight() - r2.getHeight()) / 2)) - r2.getY()); g2.setStroke(DEFAULT_LINE_STROKE); g2.setColor(Color.black); g2.drawString(name, xLabel, yLabel); } } } }
工具类,用来计算一些坐标的
/** * CopyRight (C) 2006-2009 yy * @author yy * @project jbpm * @version 1.0 * @mail yy629_86 at 163 dot com * @date 2009-9-11 上午06:16:26 * @description */ package sofocus.bpm.jbpm.jpdl; import java.awt.Point; import java.awt.Rectangle; /** * @author yeyong * */ public class GeometryUtils { /** * 获得直线(x1,y1)-(x2,y2)的斜率 * * @param x1 * @param y1 * @param x2 * @param y2 * @return */ public static double getSlope(int x1, int y1, int x2, int y2) { return ((double) y2 - y1) / (x2 - x1); } /** * 获得直线(x1,y1)-(x2,y2)的y轴截距 * * @param x1 * @param y1 * @param x2 * @param y2 * @return */ public static double getYIntercep(int x1, int y1, int x2, int y2) { return y1 - x1 * getSlope(x1, y1, x2, y2); } /** * 获得矩形的中点 * * @param rect * @return */ public static Point getRectangleCenter(Rectangle rect) { return new Point((int) rect.getCenterX(), (int) rect.getCenterY()); } /** * 获得矩形中心p0与p1的线段和矩形的交点 * * @param rectangle * @param p1 * @return */ public static Point getRectangleLineCrossPoint(Rectangle rectangle, Point p1, int grow) { Rectangle rect = rectangle.getBounds(); rect.grow(grow, grow); Point p0 = GeometryUtils.getRectangleCenter(rect); if (p1.x == p0.x) { if (p1.y < p0.y) { return new Point(p0.x, rect.y); } return new Point(p0.x, rect.y + rect.height); } if (p1.y == p0.y) { if (p1.x < p0.x) { return new Point(rect.x, p0.y); } return new Point(rect.x + rect.width, p0.y); } double slope = GeometryUtils.getSlope(p0.x, p0.y, rect.x, rect.y); double slopeLine = GeometryUtils.getSlope(p0.x, p0.y, p1.x, p1.y); double yIntercep = GeometryUtils.getYIntercep(p0.x, p0.y, p1.x, p1.y); if (Math.abs(slopeLine) > slope - 1e-2) { if (p1.y < rect.y) { return new Point((int) ((rect.y - yIntercep) / slopeLine), rect.y); } else { return new Point((int) ((rect.y + rect.height - yIntercep) / slopeLine), rect.y + rect.height); } } if (p1.x < rect.x) { return new Point(rect.x, (int) (slopeLine * rect.x + yIntercep)); } else { return new Point(rect.x + rect.width, (int) (slopeLine * (rect.x + rect.width) + yIntercep)); } } }
测试
public static void main(String[] args) { try { File file = new File("D:/test.jpdl.xml"); InputStream is = new FileInputStream(file); JpdlModel jpdlModel = new JpdlModel(is); ImageIO.write(new JpdlModelDrawer().draw(jpdlModel), "png", new File("D:/test.png")); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } catch (Exception e) { e.printStackTrace(); } }
发表评论
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drools 规则文件 —— 语法
2014-06-09 21:53 3422原文:http://liureying.blog.163.co ... -
使用eclipse创建bpmn2文件的一些问题
2014-06-07 15:18 1739使用bpmn2 diagram Editor编辑器的问题 1 ... -
JBPM6入门资料: Spring4 + Hibernate4 + JBPM6整合
2014-05-21 19:39 18776参考资料: =============== ... -
我的Activiti例子
2013-09-21 15:01 6899Spring 与Activiti的入门整合 http://ww ... -
各种状态的任务查询以及和业务对象关联
2013-09-21 14:26 1947http://www.kafeitu.me/activiti/ ... -
Activiti: 三种部署方式和几种启动方式
2013-09-20 00:24 4721三种部署: 1.自动部署: <property name ... -
Activiti modeler 国际化要点
2013-09-18 15:33 25481. 界面文本:src/main/resources/sten ... -
两篇整合Activiti Modeler到业务系统
2013-09-17 14:29 8696整合Activiti Modeler到业务系统(或BPM平台) ... -
Activiti5.12共22张表
2013-09-17 14:10 1963(1)用户管理表 ACT_ID_GROUP; ... -
Activiti: 关于表单的一些接口
2013-09-17 09:31 2483获得流程启动的时候的表单信息 ProcessInstance ... -
Activiti5: TaskQuery查询API
2013-09-16 13:34 3466http://blog.csdn.net/iflow/arti ... -
第一个Activiti5.13 + Spring3.x例子
2013-09-16 13:24 2359参考: http://www.iteye.com/topic/ ... -
kft-activiti-demo: 部署记录
2013-09-13 17:36 20102.SpringMvc + Activiti + Hibern ... -
SSH 整合 Activiti
2013-09-09 14:45 2019原文:http://blog.chinaunix.net/ui ... -
Activiti BPM Platform工作流的一些资料
2013-09-03 16:07 2929Activiti官方: http://www.activiti ... -
JBPM5.4发送email
2013-05-29 15:57 2078JBPM5.4配置参考: http://panyongzhen ... -
Spring3.1 + Hibernate4.2.1 + JBPM5.4 + Ehache整合例子
2013-05-29 11:17 9476pom.xml ----------------------- ... -
JBPM5 Designer 2.3源码问题
2013-05-24 09:50 2342最新本2.4发布,但是里面是使用Maven的module方式来 ... -
Spring 3 & jBPM 5 & LocalTaskService
2013-05-24 09:52 1824帖子地址:https://community.jboss.or ... -
JBPM Designer 部署
2013-05-24 09:53 1636版本:2.4 把war放到tomcat下面之后,进入的url是 ...
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JBPM4.4学习文档.ppt
`subjbpm.jpdl.xml`文件则是jbpm流程定义语言(Job Process Definition Language)的文件,它是jbpm用来存储流程定义的XML格式。此文件包含了流程的所有详细信息,包括活动(tasks)、泳道(lanes)、转换...
1. 新建一个 jbpm4.4 的流程定义文件 2. 用流程设计器打开新建的 leave.jpdl.xml 3. 设计请假流程 六、流程设计 在这个简单的请假流程中,包含开始(start)、结束(end)、任务(task)、决策(decision)四种...
XML文件是jbpm4.4的标准格式,可以方便地在不同的系统之间共享和迁移流程定义。 另一方面,jbpm4.4也支持导入XML文件来恢复已有的流程设计。通过此功能,团队成员可以方便地协作开发,或者在升级或调试流程时恢复到...
- 创建流程定义文件(.bpmn或.bpmn2),并在jbpm工作台中进行设计和部署。 - 实现业务服务接口,使用jbpm提供的API启动流程实例,处理任务,完成流程流转。 - 设计Struts2 Action,处理用户请求,与Spring服务层...
6. **部署与执行**:jbpm流程可以通过部署单元(Deployment Unit)进行部署,这可以是一个独立的流程定义文件(.bpmn或.xml),也可以包含相关的类和资源。部署后,流程实例可以通过调用API启动,或者通过事件触发。...