tempMapList.add(map);
}
}
}
if (!CollectionUtils.isEmpty(tempMapList)) {
// 遍历匹配的集合，取得开始时间最早的一个
long earliestStamp = 0L;
String highLightedFlowId = null;
for (Map<String, Object> map : tempMapList) {
long highLightedFlowStartTime = Long.valueOf(map.get("highLightedFlowStartTime").toString());
if (earliestStamp == 0 || earliestStamp >= highLightedFlowStartTime) {
highLightedFlowId = map.get("highLightedFlowId").toString();
earliestStamp = highLightedFlowStartTime;
}
}
highLightedFlowIds.add(highLightedFlowId);
}
}
}
return highLightedFlowIds;
}
3.高亮正在进行中的节点+处理过的连接线+处理过的节点
// 获取流程中已经执行的节点，按照执行先后顺序排序
List historicActivityInstances = historyService.
createHistoricActivityInstanceQuery()
.processInstanceId(processInstanceId)
.orderByHistoricActivityInstanceId().asc().list();
// 高亮已经执行流程节点ID集合
List highLightedActivitiIds = new ArrayList<>();
for (HistoricActivityInstance historicActivityInstance : historicActivityInstances) {
highLightedActivitiIds.add(historicActivityInstance.getActivityId());
}
4.自定义商务范配色
绘图原理是调用下面的方法，扩展一波即可。
ProcessDiagramGenerator processDiagramGenerator = new DefaultProcessDiagramGenerator();
processDiagramGenerator.generateDiagram()
核心方法是，DefaultProcessDiagramGenerator.drawActivity 重写它吧
protected void drawActivity(DefaultProcessDiagramCanvas processDiagramCanvas, BpmnModel bpmnModel,
FlowNode flowNode, List highLightedActivities, List highLightedFlows, double scaleFactor) {
全部代码如下：
涉及到2个类：
LakerProcessDiagramCanvas
继承了DefaultProcessDiagramCanvas
- 重写定义了这2个值
HIGHLIGHT_COLOR = Color.cyan;// 默认颜色，之前是红色
THICK_TASK_BORDER_STROKE = new BasicStroke(6.0f);// 边框宽度 之前是3.0
- 新定义了可以传入颜色的方法
public void drawHighLightColor(int x, int y, int width, int height, Color color) {
Paint originalPaint = g.getPaint();
Stroke originalStroke = g.getStroke();
g.setPaint(color);
g.setStroke(THICK_TASK_BORDER_STROKE);
RoundRectangle2D rect = new RoundRectangle2D.Double(x, y, width, height, 20, 20);
g.draw(rect);
g.setPaint(originalPaint);
g.setStroke(originalStroke);
}
LakerProcessDiagramGenerator
继承了DefaultProcessDiagramGenerator
- 重写了initProcessDiagramCanvas让其返回我们扩展的LakerProcessDiagramCanvas
return new LakerProcessDiagramCanvas((int) maxX + 10, (int) maxY + 10, (int) minX, (int) minY,
imageType, activityFontName, labelFontName, annotationFontName, customClassLoader);
- 重写了drawActivity，最后一个节点自定义颜色显示
// 画高亮的节点 TODO
if (highLightedActivities.contains(flowNode.getId())) {
if (highLightedActivities.get(highLightedActivities.size() - 1).equalsIgnoreCase(flowNode.getId())) {
LakerProcessDiagramCanvas lakerProcessDiagramCanvas = ((LakerProcessDiagramCanvas) processDiagramCanvas);
lakerProcessDiagramCanvas.drawHighLightColor((int) graphicInfo.getX(), (int) graphicInfo.getY(), (int) graphicInfo.getWidth(), (int) graphicInfo.getHeight(), Color.YELLOW);
} else {
processDiagramCanvas.drawHighLight((int) graphicInfo.getX(), (int) graphicInfo.getY(), (int) graphicInfo.getWidth(), (int) graphicInfo.getHeight());
}
}
全部源码
- 继承DefaultProcessDiagramCanvas
package com.laker.workflow.controller;
import org.activiti.image.impl.DefaultProcessDiagramCanvas;
import java.awt.*;
import java.awt.geom.RoundRectangle2D;
public class LakerProcessDiagramCanvas extends DefaultProcessDiagramCanvas {
public LakerProcessDiagramCanvas(int width, int height, int minX, int minY, String imageType, String activityFontName, String labelFontName, String annotationFontName, ClassLoader customClassLoader) {
super(width, height, minX, minY, imageType, activityFontName, labelFontName, annotationFontName, customClassLoader);
HIGHLIGHT_COLOR = Color.cyan;
THICK_TASK_BORDER_STROKE = new BasicStroke(6.0f);
}
public LakerProcessDiagramCanvas(int width, int height, int minX, int minY, String imageType) {
super(width, height, minX, minY, imageType);
HIGHLIGHT_COLOR = Color.cyan;
THICK_TASK_BORDER_STROKE = new BasicStroke(6.0f);
}
public void drawHighLightColor(int x, int y, int width, int height, Color color) {
Paint originalPaint = g.getPaint();
Stroke originalStroke = g.getStroke();
g.setPaint(color);
g.setStroke(THICK_TASK_BORDER_STROKE);
RoundRectangle2D rect = new RoundRectangle2D.Double(x, y, width, height, 20, 20);
g.draw(rect);
g.setPaint(originalPaint);
g.setStroke(originalStroke);
}
}
- 继承DefaultProcessDiagramGenerator
package com.laker.workflow.controller;
import org.activiti.bpmn.model.Process;
import org.activiti.bpmn.model.*;
import org.activiti.image.impl.DefaultProcessDiagramCanvas;
import org.activiti.image.impl.DefaultProcessDiagramGenerator;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.util.List;
public class LakerProcessDiagramGenerator extends DefaultProcessDiagramGenerator {
private BufferedImage processDiagram;
@Override
protected DefaultProcessDiagramCanvas generateProcessDiagram(BpmnModel bpmnModel, String imageType,
List highLightedActivities, List highLightedFlows,
String activityFontName, String labelFontName, String annotationFontName, ClassLoader customClassLoader, double scaleFactor) {
{
prepareBpmnModel(bpmnModel);
DefaultProcessDiagramCanvas processDiagramCanvas = initProcessDiagramCanvas(bpmnModel, imageType, activityFontName, labelFontName, annotationFontName, customClassLoader);
// Draw pool shape, if process is participant in collaboration
for (Pool pool : bpmnModel.getPools()) {
GraphicInfo graphicInfo = bpmnModel.getGraphicInfo(pool.getId());
processDiagramCanvas.drawPoolOrLane(pool.getName(), graphicInfo);
}
// Draw lanes
for (Process process : bpmnModel.getProcesses()) {
for (Lane lane : process.getLanes()) {
GraphicInfo graphicInfo = bpmnModel.getGraphicInfo(lane.getId());
processDiagramCanvas.drawPoolOrLane(lane.getName(), graphicInfo);
}
}
// Draw activities and their sequence-flows
for (FlowNode flowNode : bpmnModel.getProcesses().get(0).findFlowElementsOfType(FlowNode.class)) {
drawActivity(processDiagramCanvas, bpmnModel, flowNode, highLightedActivities, highLightedFlows, scaleFactor);
}
for (Process process : bpmnModel.getProcesses()) {
for (FlowNode flowNode : process.findFlowElementsOfType(FlowNode.class)) {
drawActivity(processDiagramCanvas, bpmnModel, flowNode, highLightedActivities, highLightedFlows, scaleFactor);
}
}
// Draw artifacts
for (Process process : bpmnModel.getProcesses()) {
for (Artifact artifact : process.getArtifacts()) {
drawArtifact(processDiagramCanvas, bpmnModel, artifact);
}
List subProcesses = process.findFlowElementsOfType(SubProcess.class, true);
if (subProcesses != null) {
for (SubProcess subProcess : subProcesses) {
for (Artifact subProcessArtifact : subProcess.getArtifacts()) {
drawArtifact(processDiagramCanvas, bpmnModel, subProcessArtifact);
}
}
}
}
return processDiagramCanvas;
}
}
@Override
protected void drawActivity(DefaultProcessDiagramCanvas processDiagramCanvas, BpmnModel bpmnModel,
FlowNode flowNode, List highLightedActivities, List highLightedFlows, double scaleFactor) {
{
ActivityDrawInstruction drawInstruction = activityDrawInstructions.get(flowNode.getClass());
if (drawInstruction != null) {
drawInstruction.draw(processDiagramCanvas, bpmnModel, flowNode);
// Gather info on the multi instance marker
boolean multiInstanceSequential = false, multiInstanceParallel = false, collapsed = false;
if (flowNode instanceof Activity) {
Activity activity = (Activity) flowNode;
MultiInstanceLoopCharacteristics multiInstanceLoopCharacteristics = activity.getLoopCharacteristics();
if (multiInstanceLoopCharacteristics != null) {
multiInstanceSequential = multiInstanceLoopCharacteristics.isSequential();
multiInstanceParallel = !multiInstanceSequential;
}
}
// Gather info on the collapsed marker
GraphicInfo graphicInfo = bpmnModel.getGraphicInfo(flowNode.getId());
if (flowNode instanceof SubProcess) {
collapsed = graphicInfo.getExpanded() != null && !graphicInfo.getExpanded();
} else if (flowNode instanceof CallActivity) {
collapsed = true;
}
if (scaleFactor == 1.0) {
// Actually draw the markers
processDiagramCanvas.drawActivityMarkers((int) graphicInfo.getX(), (int) graphicInfo.getY(), (int) graphicInfo.getWidth(), (int) graphicInfo.getHeight(),
multiInstanceSequential, multiInstanceParallel, collapsed);
}
// 画高亮的节点 TODO
if (highLightedActivities.contains(flowNode.getId())) {
if (highLightedActivities.get(highLightedActivities.size() - 1).equalsIgnoreCase(flowNode.getId())) {
LakerProcessDiagramCanvas lakerProcessDiagramCanvas = ((LakerProcessDiagramCanvas) processDiagramCanvas);
lakerProcessDiagramCanvas.drawHighLightColor((int) graphicInfo.getX(), (int) graphicInfo.getY(), (int) graphicInfo.getWidth(), (int) graphicInfo.getHeight(), Color.YELLOW);
} else {
processDiagramCanvas.drawHighLight((int) graphicInfo.getX(), (int) graphicInfo.getY(), (int) graphicInfo.getWidth(), (int) graphicInfo.getHeight());
}
}
}
// Outgoing transitions of activity
for (SequenceFlow sequenceFlow : flowNode.getOutgoingFlows()) {
boolean highLighted = (highLightedFlows.contains(sequenceFlow.getId()));
String defaultFlow = null;
if (flowNode instanceof Activity) {
defaultFlow = ((Activity) flowNode).getDefaultFlow();
} else if (flowNode instanceof Gateway) {
defaultFlow = ((Gateway) flowNode).getDefaultFlow();
}
boolean isDefault = false;
if (defaultFlow != null && defaultFlow.equalsIgnoreCase(sequenceFlow.getId())) {
isDefault = true;
}
boolean drawConditionalIndicator = sequenceFlow.getConditionExpression() != null && !(flowNode instanceof Gateway);
String sourceRef = sequenceFlow.getSourceRef();
String targetRef = sequenceFlow.getTargetRef();
FlowElement sourceElement = bpmnModel.getFlowElement(sourceRef);
FlowElement targetElement = bpmnModel.getFlowElement(targetRef);
List graphicInfoList = bpmnModel.getFlowLocationGraphicInfo(sequenceFlow.getId());
if (graphicInfoList != null && graphicInfoList.size() > 0) {
graphicInfoList = connectionPerfectionizer(processDiagramCanvas, bpmnModel, sourceElement, targetElement, graphicInfoList);
int xPoints[] = new int[graphicInfoList.size()];
int yPoints[] = new int[graphicInfoList.size()];
for (int i = 1; i < graphicInfoList.size(); i++) {
GraphicInfo graphicInfo = graphicInfoList.get(i);
GraphicInfo previousGraphicInfo = graphicInfoList.get(i - 1);
if (i == 1) {
xPoints[0] = (int) previousGraphicInfo.getX();
yPoints[0] = (int) previousGraphicInfo.getY();
}
xPoints[i] = (int) graphicInfo.getX();
yPoints[i] = (int) graphicInfo.getY();
}
processDiagramCanvas.drawSequenceflow(xPoints, yPoints, drawConditionalIndicator, isDefault, highLighted, scaleFactor);
// Draw sequenceflow label
GraphicInfo labelGraphicInfo = bpmnModel.getLabelGraphicInfo(sequenceFlow.getId());
if (labelGraphicInfo != null) {
processDiagramCanvas.drawLabel(sequenceFlow.getName(), labelGraphicInfo, false);
}
}
}
// Nested elements
if (flowNode instanceof FlowElementsContainer) {
for (FlowElement nestedFlowElement : ((FlowElementsContainer) flowNode).getFlowElements()) {
if (nestedFlowElement instanceof FlowNode) {
drawActivity(processDiagramCanvas, bpmnModel, (FlowNode) nestedFlowElement,
highLightedActivities, highLightedFlows, scaleFactor);
}
}
}
}
}
protected static DefaultProcessDiagramCanvas initProcessDiagramCanvas(BpmnModel bpmnModel, String imageType,
String activityFontName, String labelFontName, String annotationFontName, ClassLoader customClassLoader) {
// We need to calculate maximum values to know how big the image will be in its entirety
double minX = Double.MAX_VALUE;
double maxX = 0;
double minY = Double.MAX_VALUE;
double maxY = 0;
for (Pool pool : bpmnModel.getPools()) {
GraphicInfo graphicInfo = bpmnModel.getGraphicInfo(pool.getId());
minX = graphicInfo.getX();
maxX = graphicInfo.getX() + graphicInfo.getWidth();
minY = graphicInfo.getY();
maxY = graphicInfo.getY() + graphicInfo.getHeight();
}
List flowNodes = gatherAllFlowNodes(bpmnModel);
for (FlowNode flowNode : flowNodes) {
GraphicInfo flowNodeGraphicInfo = bpmnModel.getGraphicInfo(flowNode.getId());
// width
if (flowNodeGraphicInfo.getX() + flowNodeGraphicInfo.getWidth() > maxX) {
maxX = flowNodeGraphicInfo.getX() + flowNodeGraphicInfo.getWidth();
}
if (flowNodeGraphicInfo.getX() < minX) {
minX = flowNodeGraphicInfo.getX();
}
// height
if (flowNodeGraphicInfo.getY() + flowNodeGraphicInfo.getHeight() > maxY) {
maxY = flowNodeGraphicInfo.getY() + flowNodeGraphicInfo.getHeight();
}
if (flowNodeGraphicInfo.getY() < minY) {
minY = flowNodeGraphicInfo.getY();
}
for (SequenceFlow sequenceFlow : flowNode.getOutgoingFlows()) {
List graphicInfoList = bpmnModel.getFlowLocationGraphicInfo(sequenceFlow.getId());
if (graphicInfoList != null) {
for (GraphicInfo graphicInfo : graphicInfoList) {
// width
if (graphicInfo.getX() > maxX) {
maxX = graphicInfo.getX();
}
if (graphicInfo.getX() < minX) {
minX = graphicInfo.getX();
}
// height
if (graphicInfo.getY() > maxY) {
maxY = graphicInfo.getY();
}
if (graphicInfo.getY() < minY) {
minY = graphicInfo.getY();
}
}
}
}
}
List artifacts = gatherAllArtifacts(bpmnModel);
for (Artifact artifact : artifacts) {
GraphicInfo artifactGraphicInfo = bpmnModel.getGraphicInfo(artifact.getId());
if (artifactGraphicInfo != null) {
// width
if (artifactGraphicInfo.getX() + artifactGraphicInfo.getWidth() > maxX) {
maxX = artifactGraphicInfo.getX() + artifactGraphicInfo.getWidth();
}
if (artifactGraphicInfo.getX() < minX) {
minX = artifactGraphicInfo.getX();
}
// height
if (artifactGraphicInfo.getY() + artifactGraphicInfo.getHeight() > maxY) {
maxY = artifactGraphicInfo.getY() + artifactGraphicInfo.getHeight();
}
if (artifactGraphicInfo.getY() < minY) {
minY = artifactGraphicInfo.getY();
}
}
List graphicInfoList = bpmnModel.getFlowLocationGraphicInfo(artifact.getId());
if (graphicInfoList != null) {
for (GraphicInfo graphicInfo : graphicInfoList) {
// width
if (graphicInfo.getX() > maxX) {
maxX = graphicInfo.getX();
}
if (graphicInfo.getX() < minX) {
minX = graphicInfo.getX();
}
// height
if (graphicInfo.getY() > maxY) {
maxY = graphicInfo.getY();
}
if (graphicInfo.getY() < minY) {
minY = graphicInfo.getY();
}
}
}
}
int nrOfLanes = 0;
for (Process process : bpmnModel.getProcesses()) {
for (Lane l : process.getLanes()) {
nrOfLanes++;
GraphicInfo graphicInfo = bpmnModel.getGraphicInfo(l.getId());
// // width
if (graphicInfo.getX() + graphicInfo.getWidth() > maxX) {
maxX = graphicInfo.getX() + graphicInfo.getWidth();
}
if (graphicInfo.getX() < minX) {
minX = graphicInfo.getX();
}
// height
if (graphicInfo.getY() + graphicInfo.getHeight() > maxY) {
maxY = graphicInfo.getY() + graphicInfo.getHeight();
}
if (graphicInfo.getY() < minY) {
minY = graphicInfo.getY();
}
}
}
// Special case, see activiti.atlassian.net/browse/ACT-…
if (flowNodes.isEmpty() && bpmnModel.getPools().isEmpty() && nrOfLanes == 0) {
// Nothing to show
minX = 0;
minY = 0;
}
return new LakerProcessDiagramCanvas((int) maxX + 10, (int) maxY + 10, (int) minX, (int) minY,
imageType, activityFontName, labelFontName, annotationFontName, customClassLoader);
}
}
List historicTaskInstances = historyService.createHistoricTaskInstanceQuery()
.processInstanceId("2515")
.orderByHistoricTaskInstanceEndTime().asc().list();
SELECT DISTINCT RES.*
FROM ACT_HI_TASKINST RES
WHERE RES.PROC_INST_ID_ = '2515'
ORDER BY RES.END_TIME_ ASC LIMIT '2147483647' OFFSET '0'
例如流程标题为“张三的请假单”
runtimeService.setProcessInstanceName(processInstance.getId(),"张三的请假条");
最后的内容
在开头跟大家分享的时候我就说，面试我是没有做好准备的，全靠平时的积累，确实有点临时抱佛脚了，以至于我自己还是挺懊恼的。（准备好了或许可以拿个40k，没做准备只有30k+，你们懂那种感觉吗）
如何准备面试？
1、前期铺垫（技术沉积）
程序员面试其实是对于技术的一次摸底考试，你的技术牛逼，那你就是大爷。大厂对于技术的要求主要体现在：基础，原理，深入研究源码，广度，实战五个方面，也只有将原理理论结合实战才能把技术点吃透。
下面是我会看的一些资料笔记，希望能帮助大家由浅入深，由点到面的学习Java，应对大厂面试官的灵魂追问
这部分内容过多，小编只贴出部分内容展示给大家了，见谅见谅！
- Java程序员必看《Java开发核心笔记（华山版）》
- Redis学习笔记
- Java并发编程学习笔记
四部分，详细拆分并发编程——并发编程+模式篇+应用篇+原理篇
- Java程序员必看书籍《深入理解 ava虚拟机第3版》（pdf版）
- 大厂面试必问——数据结构与算法汇集笔记
其他像Spring，SpringBoot，SpringCloud，SpringCloudAlibaba，Dubbo，Zookeeper，Kafka，RocketMQ，RabbitMQ，Netty，MySQL，Docker，K8s等等我都整理好，这里就不一一展示了。
2、狂刷面试题
技术主要是体现在平时的积累实用，面试前准备两个月的时间再好好复习一遍，紧接着就可以刷面试题了，下面这些面试题都是小编精心整理的，贴给大家看看。
①大厂高频45道笔试题（智商题）
②BAT大厂面试总结（部分内容截图）
③面试总结
3、结合实际，修改简历
程序员的简历一定要多下一些功夫，尤其是对一些字眼要再三斟酌，如“精通、熟悉、了解”这三者的区别一定要区分清楚，否则就是在给自己挖坑了。当然不会包装，我可以将我的简历给你参考参考，如果还不够，那下面这些简历模板任你挑选：
以上分享，希望大家可以在金三银四跳槽季找到一份好工作，但千万也记住，技术一定是平时工作种累计或者自学（或报班跟着老师学）通过实战累计的，千万不要临时抱佛脚。
另外，面试中遇到不会的问题不妨尝试讲讲自己的思路，因为有些问题不是考察我们的编程能力，而是逻辑思维表达能力；最后平时要进行自我分析与评价，做好职业规划，不断摸索，提高自己的编程能力和抽象思维能力。
相关阅读docs.qq.com/doc/DSmxTbFJ1cmN1R2dB
