传染病模型-java代码

model层

hospital类

public class Hospital {private int contain;//总床位private int free;//空余床位private int working;//正在使用的床位public Hospital() {}public Hospital(int contain) {this.contain = contain;this.free = contain;this.working = 0;}public int getContain() {return contain;}public void setContain(int contain) {this.contain = contain;}public int getFree() {return free;}public void setFree(int free) {this.free = free;}public int getWorking() {return working;}public void setWorking(int working) {this.working = working;}public boolean isFull(){if(this.free<=0){return true;}return false;}
}

Person类

public class Person {private boolean isInfected;private boolean inHospital;private int infectedDay;//第几天被感染的private boolean isSure;private int cureDate;//接受治疗开始时间private  boolean isCured;//是否治疗完成
//    当isSure和isInfected同时为true时，表示确诊
//    当isSure为false，isInfected为true时表示，未确诊患者或无症状患者public Person() {this.isInfected=false;this.inHospital=false;this.isSure=false;this.isCured=false;}public Person(boolean isInfected, boolean inHospital, int infectedDay, boolean isSure, int cureDate, boolean isCured) {this.isInfected = isInfected;this.inHospital = inHospital;this.infectedDay = infectedDay;this.isSure = isSure;this.cureDate = cureDate;this.isCured = isCured;}public boolean isCured() {return isCured;}public void setCured(boolean cured) {isCured = cured;}public int getInfectedDay() {return infectedDay;}public void setInfectedDay(int infectedDay) {this.infectedDay = infectedDay;}public int getCureDate() {return cureDate;}public void setCureDate(int cureDate) {this.cureDate = cureDate;}public boolean isInfected() {return isInfected;}public void setInfected(boolean infected) {isInfected = infected;}public boolean isInHospital() {return inHospital;}public void setInHospital(boolean inHospital) {this.inHospital = inHospital;}public boolean isSure() {return isSure;}public void setSure(boolean sure) {isSure = sure;}
}

service层

SIR

public class SIR {public void doSIR(Map<String,Object> paramMap,int i,int n){Hospital hospital=(Hospital)paramMap.get("hospital") ;List<Person> susceptible=(List<Person>) paramMap.get("susceptible");//未确诊人群List<Person> infected=(List<Person>) paramMap.get("infected");//感染者List<Person> sured=(List<Person>)paramMap.get("sured"); //确诊人群List<Person> removed=(List<Person>) paramMap.get("removed");//痊愈人群int latentPeriod=(int)paramMap.get("latentPeriod");//潜伏期长度double infectionRate=(double)paramMap.get("infectionRate");//感染率double cureRate=(double)paramMap.get("cureRate");//治愈率int cureTime=(int)paramMap.get("cureTime");//治愈周期//人群中存在感染者，病毒就会有机会感染人群if(!infected.isEmpty()){for (Person person : susceptible) {if(!person.isInfected()){double a=0;for (int i1=0;i1<n;i1++){a+=Math.random();}a=a/n;if(a<=infectionRate){person.setInfected(true);person.setInfectedDay(i);infected.add(person);}//模拟感染}}}//感染人群出现症状，就变为确证患者，从感染者中隔离移除，不在感染正常患者for (Person person : infected) {int infectedDate=person.getInfectedDay();if((i-infectedDate)>=latentPeriod){person.setSure(true);sured.add(person);if(!hospital.isFull()){sendToHospital(person,hospital,i);}}}//确诊患者在医院有空余床位的时候，送去医院进行治疗for (Person person : sured) {if(person.isInHospital()){cure(person,hospital,i,cureTime,removed);}else{if(!hospital.isFull()){sendToHospital(person,hospital,i);}}}updateSusceptible(susceptible);updateInfected(infected);updateSured(sured);}public boolean hasInfected(List<Person> persons){for (Person person : persons) {if(person.isInfected()){return true;}}return false;}public void sendToHospital(Person person, Hospital hospital,int day){person.setInHospital(true);person.setCureDate(day);hospital.setWorking(hospital.getWorking()+1);hospital.setFree(hospital.getFree()-1);}public void updateSusceptible(List<Person> susceptible){List<Integer> indexs=new ArrayList<Integer>();for(int i=0;i<susceptible.size();i++){Person person=susceptible.get(i);if(person.isInfected()){int index=i;indexs.add(index);}}for (int i=indexs.size()-1;i>=0;i--){int index=indexs.get(i);susceptible.remove(index);}}public void updateInfected(List<Person> infected){List<Integer> indexs=new ArrayList<Integer>();for(int i=0;i<infected.size();i++){Person person=infected.get(i);if(person.isSure()){int index=i;indexs.add(index);}}for (int i=indexs.size()-1;i>=0;i--){int index=indexs.get(i);infected.remove(index);}}public void updateSured(List<Person> sured){List<Integer> indexs=new ArrayList<Integer>();for(int i=0;i<sured.size();i++){Person person=sured.get(i);if(person.isCured()){int index=i;indexs.add(index);}}for (int i=indexs.size()-1;i>=0;i--){int index=indexs.get(i);sured.remove(index);}}public void cure(Person person,Hospital hospital,int now,int cureTime,List<Person> removed){int cureDate=person.getCureDate();if((now-cureDate)>=cureTime){person.setCured(true);removed.add(person);hospital.setFree(hospital.getFree()+1);hospital.setWorking(hospital.getWorking()-1);}}
}

Main方法

public class Main {//count个人中 有num个人感染病毒private static int count;private  static int num;private static  int days;//模拟时长private static int latentPeriod;//潜伏期长度private static double infectionRate;//感染率private static double cureRate;//治愈率private static int cureTime;//治愈周期private static int n;private static int contain;//医院床位public static StandardChartTheme getChineseTheme() {//解决jfreechart中文乱码StandardChartTheme chineeTheme = new StandardChartTheme("CN");chineeTheme.setExtraLargeFont(new Font("隶书", Font.BOLD, 20));chineeTheme.setRegularFont(new Font("隶书", Font.PLAIN, 15));chineeTheme.setLargeFont(new Font("宋书", Font.PLAIN, 15));return chineeTheme;}public static void main(String[] args) throws IOException {//设置不同的参数进行模拟count=10000;num=50;days=100;cureRate=0.8;n=100;latentPeriod=14;infectionRate=0.5;contain=1000;for(cureTime=1;cureTime<=20;cureTime++){doMain(count,num,days,latentPeriod,infectionRate,cureRate,cureTime,n,contain);}System.out.println("done!");}public  static void doMain(int count,int num,int days,int latentPeriod,double infectionRate,double cureRate,int cureTime,int n,int contain) throws  IOException{List<Person> susceptible=new ArrayList<Person>();List<Person> infected=new ArrayList<Person>();List<Person> removed=new ArrayList<Person>();List<Person> sured=new ArrayList<Person>();SIR sir=new SIR();DefaultCategoryDataset dataset=new DefaultCategoryDataset();Hospital hospital=new Hospital(contain);for(int i=1;i<=count;i++){Person person=new Person();if(i<=num){person.setInfected(true);person.setInfectedDay(1);infected.add(person);}else{susceptible.add(person);}}Map<String,Object> paramMap=new HashMap<String,Object>();paramMap.put("hospital",hospital);paramMap.put("susceptible",susceptible);paramMap.put("infected",infected);paramMap.put("removed",removed);paramMap.put("sured",sured);paramMap.put("latentPeriod",latentPeriod);paramMap.put("infectionRate",infectionRate);paramMap.put("cureRate",cureRate);paramMap.put("cureTime",cureTime);int susceptibleCount=0;int infectedCount=0;int removedCount=0;int suredCount=0;for(int i=1;i<=days;i++){sir.doSIR(paramMap,i,n);susceptibleCount=((List<Person>)paramMap.get("susceptible")).size();infectedCount=((List<Person>)paramMap.get("infected")).size();removedCount=((List<Person>)paramMap.get("removed")).size();suredCount=((List<Person>)paramMap.get("sured")).size();dataset.addValue(susceptibleCount,"易感人群",""+i);dataset.addValue(infectedCount,"感染者",""+i);dataset.addValue(suredCount,"确诊患者",""+i);dataset.addValue(removedCount,"移除人群",""+i);
//            System.out.println("susceptibleCount:"+susceptibleCount+"\t"+"infectedCount:"+infectedCount+"\t"+"suredCount:"+suredCount+
//                    "\tremovedCount:"+removedCount +"\t总数"+(susceptibleCount+infectedCount+removedCount+suredCount)+"\t"+i);}ChartFactory.setChartTheme(getChineseTheme());String fileName="D:/数学建模/COVID-19模拟(潜伏期"+latentPeriod+"天，感染率"+infectionRate+"治疗周期"+cureTime+"天,床位"+contain+").png ";JFreeChart chart = ChartFactory.createLineChart("COVID-19模拟", "天数", "人数", dataset,PlotOrientation.VERTICAL,true,true,false);ChartUtils.saveChartAsPNG(new File(fileName), chart, 1920, 1080);System.out.println("s");}
}

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传染病模型-java代码

model层

service层

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