我希望程序在模型中循环执行17次，但是如果我循环执行的次数超过5，则程序冻结了，我尝试查找问题，这是因为edt无法执行繁重的任务，但是我尝试在其中创建新线程解决该问题的代码，但我似乎无法正确解决。
附言：程序可以正常工作，所以这不是实际程序的问题，它是循环（循环17次）。
public synchronized void start(int max) {
try {
// max = total number of questions
for (int i = 1; i < max; i++) {
//new cmd command
Process p = Runtime.getRuntime().exec("cmd");
// new thread
new Thread(() -> {
try (BufferedReader reader = new BufferedReader(new InputStreamReader(p.getInputStream()))) {
String line;
while ((line = reader.readLine()) != null)
System.out.println(line);
}
catch (Exception e) {
e.printStackTrace();
}
}).start();
//used to change text in files and the remaining cmd commands and move the result
try (PrintStream out = new PrintStream(p.getOutputStream())) {
//to clear previous index folder and delete results folder
deleteFile();
//to rewrite the "collection.spec" folder with the address of the Answers file
answerFile(i);
//to rewrite the "trec.topics.list"" folder with the address of the Questions file
questionFile(i);
/* PROBLEM STARTS HERE! */
for(int c = 1; c <= 17; c++) {
// after rename do the remaining cmd commands
out.println("C:/TERRIERS/terrier/bin/trec_terrier.bat -i");
out.println("C:/TERRIERS/terrier/bin/trec_terrier.bat -r");
//change model
modelSelect();
}
/* PROBLEM ENDS HERE!*/
// .....
}
p.waitFor();
//move the ".res" folder to the Results folder in projects directory
takeFile(i);
}
}
catch(IOException ex) {
}
catch(InterruptedException ex) {
}
}
这是modelSelect函数
int counter = 1;
public void modelSelect() {
//location of file
String s = "C:\\TERRIERS\\terrier\\etc\\trec.models";
try {
FileOutputStream is = new FileOutputStream(s);
OutputStreamWriter osw = new OutputStreamWriter(is);
Writer w = new BufferedWriter(osw);
//depends on count value change the model inside "trec.models" and increase counter by 1
switch (counter) {
case 1 : w.write("uk.ac.gla.terrier.matching.models.BM25"); counter++; break;
case 2 : w.write("uk.ac.gla.terrier.matching.models.DFR_BM25"); counter++; break;
case 3 : w.write("uk.ac.gla.terrier.matching.models.TF_IDF"); counter++; break;
case 4 : w.write("uk.ac.gla.terrier.matching.models.BB2"); counter++; break;
case 5 : w.write("uk.ac.gla.terrier.matching.models.IFB2"); counter++; break;
case 6 : w.write("uk.ac.gla.terrier.matching.models.In_expB2"); counter++; break;
case 7 : w.write("uk.ac.gla.terrier.matching.models.In_expC2"); counter++; break;
case 8 : w.write("uk.ac.gla.terrier.matching.models.InL2"); counter++; break;
case 9 : w.write("uk.ac.gla.terrier.matching.models.PL2"); counter++; break;
case 10 : w.write("uk.ac.gla.terrier.matching.models.DFR"); counter++; break;
case 11 : w.write("uk.ac.gla.terrier.matching.models.DFRWeightingModel"); counter++; break;
case 12 : w.write("uk.ac.gla.terrier.matching.models.DLH"); counter++; break;
case 13 : w.write("uk.ac.gla.terrier.matching.models.DLH13"); counter++; break;
case 14 : w.write("uk.ac.gla.terrier.matching.models.Hiemstra_LM"); counter++; break;
case 15 : w.write("uk.ac.gla.terrier.matching.models.Idf"); counter++; break;
case 16 : w.write("uk.ac.gla.terrier.matching.models.LemurTF_IDF"); counter++; break;
case 17 : w.write("uk.ac.gla.terrier.matching.models.WeightingModel"); counter=1; break;//reset counter to 1
}
w.close();
}
catch (IOException e) {
}
}
最佳答案
我认为您的问题缺少同步。
您可以启动两个批处理文件（out.println("C:/TERRIERS/terrier/bin/trec_terrier.bat -i"); out.println("C:/TERRIERS/terrier/bin/trec_terrier.bat -r");），而无需等待这些命令的完成就可以调用modelSelect()并启动接下来的两个批处理文件。
整个过程的Java方面非常快-比批处理文件快得多。
最好的解决方案是等待批处理文件完成。如果无法做到这一点，那么至少将代码更改为
out.println("C:/TERRIERS/terrier/bin/trec_terrier.bat -i");
out.println("C:/TERRIERS/terrier/bin/trec_terrier.bat -r");
Thread.sleep(100);
//change model
modelSelect();