去哪网实习总结：递归构建“流程运行顺序”的XML文件（JavaWeb）

本来是以做数据挖掘的目的进去哪网的，结构却成了系统开发。。。

只是还是比較认真的做了三个月，老师非常认同我的工作态度和成果。。

。

实习立即就要结束了，总结一下几点之前没有注意过的变成习惯和问题。分享给大家。

同一时候打个广告：去哪网内审部招JavaWeb开发实习生，时间很自由。每周一天、周六周日甚至都能够，时间充裕的小伙伴给我留言啊，挣个零花钱，还能长点经验。

。。。（保研的、想工作的大四狗最合适只是了。。。

）

map的结构为(thisProcessID, thisProcessType;nextProcessID1,nextProcessType1;...;nextProcessIDk,nextProcessTypek;)，假设processType部位start、end、split、join，则type和id同样。。。。

跑一下代码就知道是怎么回事了。直接上代码：

<span style="white-space:pre">	</span>public String XMLhead = "";	
	
	@SuppressWarnings({ "rawtypes", "unchecked" })
	public void formXMLfile(Map nodeMap){
		/*穿行没问题
		nodeMap.put("1", "start;2,2");
		nodeMap.put("2", "2;3,3");
		nodeMap.put("3", "3;4,end");
		nodeMap.put("4", "end");
		*/
		/* 简单并行没问题，但须要去重处理
		nodeMap.put("1", "start;2,split");
		nodeMap.put("2", "split;3,3;4,4");
		nodeMap.put("3", "3;5,join");
		nodeMap.put("4", "4;5,join");
		nodeMap.put("5", "join;6,end");
		nodeMap.put("6", "end");
		*/
		
		nodeMap.put("1", "start;2,split");
		nodeMap.put("2", "split;3,3;4,split;5,5");
		nodeMap.put("3", "3;6,6");
		nodeMap.put("4", "split;7,7;8,8");
		nodeMap.put("5", "5;9,join");
		nodeMap.put("6", "6;9,join");
		nodeMap.put("7", "7;10,join");
		nodeMap.put("8", "8;10,join");
		nodeMap.put("9", "join;11,end");
		nodeMap.put("10", "join;9,join");
		nodeMap.put("11", "end");
		/*简单并行没问题。但须要去重处理
		nodeMap.put("1", "start;2,split");
		nodeMap.put("2", "split;3,3;4,4");
		nodeMap.put("3", "3;5,join");
		nodeMap.put("4", "4;5,join");
		nodeMap.put("5", "join;6,split");
		nodeMap.put("6", "split;7,7;8,8");
		nodeMap.put("7", "7;9,join");
		nodeMap.put("8", "8;9,join");
		nodeMap.put("9", "join;10,end");
		nodeMap.put("10", "end");
		*/
		XMLhead = "<?xml version="1.0" encoding="UTF-8"?>"+"
";
		XMLhead += "<definitions xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:activiti="http://activiti.org/bpmn" xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI" xmlns:omgdc="http://www.omg.org/spec/DD/20100524/DC" xmlns:omgdi="http://www.omg.org/spec/DD/20100524/DI" typeLanguage="http://www.w3.org/2001/XMLSchema" expressionLanguage="http://www.w3.org/1999/XPath" targetNamespace="http://www.activiti.org/test">"+"
";
		String XMLtail = "</definitions>";
		XMLhead += "<process id="processID" name="processNAME" isExecutable="true">"+"
";
		XMLtail = "</process>
"+XMLtail;
		
		String this_id = "1";//start
		String this_type = "start";
		RECUformXMLfile(nodeMap, this_id, this_type);
		String XMLfile = XMLhead + XMLtail;
		
		//去重
		String[] temp = XMLfile.split("
");
		List<String> list = new LinkedList<String>();  
        for(int i = 0; i < temp.length; i++) {  
            if(!list.contains(temp[i])) {
                list.add(temp[i]);//改为写文件
                System.out.println(temp[i]);
            }
        }
	}
	
	@SuppressWarnings("rawtypes")
	public void RECUformXMLfile(Map nodeMap, String this_id, String this_type){
		if(this_type.equals("start")){//start
			String[] toNodes = nodeMap.get(this_id).toString().split(";");
			String next_id = toNodes[1].split(",")[0];
			String next_type = toNodes[1].split(",")[1];
			if(next_type.equals("split")){
				XMLhead += "<startEvent id="startevent1" name="Start"></startEvent>"+"
";
				XMLhead += "<sequenceFlow id="flow_"+this_id+"" sourceRef="startevent1" targetRef="gateway_"+next_id+""></sequenceFlow>"+"
";
				RECUformXMLfile(nodeMap, next_id, next_type);
			} else if(next_type.equals("end_start_join")){//不可能
				
			} else{//task
				XMLhead += "<startEvent id="startevent1" name="Start"></startEvent>"+"
";
				XMLhead += "<sequenceFlow id="flow_"+this_id+"" sourceRef="startevent1" targetRef="task_"+next_id+""></sequenceFlow>"+"
";
				RECUformXMLfile(nodeMap, next_id, next_type);
			}
		} else if(this_type.equals("split")){//split
			XMLhead += "<parallelGateway id="gateway_"+this_id+"" name="Parallel Gateway"></parallelGateway>"+"
";
			String[] toNodes = nodeMap.get(this_id).toString().split(";");
			for(int i=1;i<toNodes.length;i++){
				String next_id = toNodes[i].split(",")[0];
				String next_type = toNodes[i].split(",")[1];
				if(next_type.equals("split")){
					XMLhead += "<sequenceFlow id="flow_"+this_id+"" sourceRef="gateway_"+this_id+"" targetRef="gateway_"+next_id+""></sequenceFlow>"+"
";
					RECUformXMLfile(nodeMap, next_id, next_type);
				} else if(next_type.equals("end_start_join")){//不可能
					
				} else{//task
					XMLhead += "<sequenceFlow id="flow_"+this_id+"" sourceRef="gateway_"+this_id+"" targetRef="task_"+next_id+""></sequenceFlow>"+"
";
					RECUformXMLfile(nodeMap, next_id, next_type);
				}
			}
		} else if(this_type.equals("end")){//不会出现，接下来的两个推断分支可能的next_type==end时，都已经处理
			
		} else if(this_type.equals("join")){//join，join和task，两者处理逻辑一样，除了一个用gateWay。一个用task
			String[] toNodes = nodeMap.get(this_id).toString().split(";");
			String next_id = toNodes[1].split(",")[0];
			String next_type = toNodes[1].split(",")[1];
			if(next_type.equals("end")){
				XMLhead += "<parallelGateway id="gateway_"+this_id+"" name="Parallel Gateway"></parallelGateway>"+"
";
				XMLhead += "<sequenceFlow id="flow_"+this_id+"" sourceRef="gateway_"+this_id+"" targetRef="endevent1"></sequenceFlow>"+"
";
				XMLhead += "<endEvent id="endevent1" name="End"></endEvent>"+"
";
				return ;
			} else if(next_type.equals("start")){//不可能
				
			} else if(next_type.equals("split")){
				XMLhead += "<parallelGateway id="gateway_"+this_id+"" name="Parallel Gateway"></parallelGateway>"+"
";
				XMLhead += "<sequenceFlow id="flow_"+this_id+"" sourceRef="gateway_"+this_id+"" targetRef="gateway_"+next_id+""></sequenceFlow>"+"
";
				RECUformXMLfile(nodeMap, next_id, next_type);
			} else if(next_type.equals("join")){
				XMLhead += "<parallelGateway id="gateway_"+this_id+"" name="Parallel Gateway"></parallelGateway>"+"
";
				XMLhead += "<sequenceFlow id="flow_"+this_id+"" sourceRef="gateway_"+this_id+"" targetRef="gateway_"+next_id+""></sequenceFlow>"+"
";
				return ;
			} else{//task
				XMLhead += "<parallelGateway id="gateway_"+this_id+"" name="Parallel Gateway"></parallelGateway>"+"
";
				XMLhead += "<sequenceFlow id="flow_"+this_id+"" sourceRef="gateway_"+this_id+"" targetRef="task_"+next_id+""></sequenceFlow>"+"
";
				RECUformXMLfile(nodeMap, next_id, next_type);
			}
		} else{//task，task和join。两者处理逻辑一样。除了一个用gateWay。一个用task
			String[] toNodes = nodeMap.get(this_id).toString().split(";");
			String next_id = toNodes[1].split(",")[0];
			String next_type = toNodes[1].split(",")[1];
			if(next_type.equals("end")){
				XMLhead += "<userTask id="task_"+this_id+"" name=""+this_id+""></userTask>"+"
";
				XMLhead += "<sequenceFlow id="flow_"+this_id+"" sourceRef="task_"+this_id+"" targetRef="endevent1"></sequenceFlow>"+"
";
				XMLhead += "<endEvent id="endevent1" name="End"></endEvent>"+"
";
				return ;
			} else if(next_type.equals("start")){//不可能
				
			} else if(next_type.equals("split")){
				XMLhead += "<userTask id="task_"+this_id+"" name=""+this_id+""></userTask>"+"
";
				XMLhead += "<sequenceFlow id="flow_"+this_id+"" sourceRef="task_"+this_id+"" targetRef="gateway_"+next_id+""></sequenceFlow>"+"
";
				RECUformXMLfile(nodeMap, next_id, next_type);
			} else if(next_type.equals("join")){
				XMLhead += "<userTask id="task_"+this_id+"" name=""+this_id+""></userTask>"+"
";
				XMLhead += "<sequenceFlow id="flow_"+this_id+"" sourceRef="task_"+this_id+"" targetRef="gateway_"+next_id+""></sequenceFlow>"+"
";
				//return ;
				RECUformXMLfile(nodeMap, next_id, next_type);
			} else{//task
				XMLhead += "<userTask id="task_"+this_id+"" name=""+this_id+""></userTask>"+"
";
				XMLhead += "<sequenceFlow id="flow_"+this_id+"" sourceRef="task_"+this_id+"" targetRef="task_"+next_id+""></sequenceFlow>"+"
";
				RECUformXMLfile(nodeMap, next_id, next_type);
			}
		}
	}