Question

java 获取指定的进程id

Answer 1

package test;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.PrintWriter;

public class GetPid {

private static final String PNAME = "QQ";

public static void main(String[] args)
throws IOException {
System.out.println("包含关键字 "+PNAME+" 的进程有：");
System.out.println();
String path = System.getProperty("user.dir");
final File createFileName = new File(path + "\\mytempscript.vbe");
if(createFileName.exists()?createFileName.delete():createFileName.createNewFile()){}

final PrintWriter pw = new PrintWriter(new FileWriter(createFileName,
true), true);
pw.println("for each ps in getobject(\"winmgmts:\\\\.\\root\\cimv2:win32_process\").instances_");
pw.println("wscript.echo ps.handle&vbtab&ps.name");
pw.println("next");
pw.close();

final InputStream ii = Runtime.getRuntime().exec(
"cscript " + path + "\\mytempscript.vbe").getInputStream();

final InputStreamReader ir = new InputStreamReader(ii);

final BufferedReader br = new BufferedReader(ir);
String str = null;
String[] ss = null;
while ((str = br.readLine()) != null) {
if (str.indexOf(PNAME)>0&&str.endsWith(".exe")) {
ss = str.split("\\s");
for(int i=0;i<ss.length;i+=2){
System.out.println("****************************");
System.out.println("进程名："+ss[i+1]+"\n进程ID："+ss[i]);
}
}
}
System.out.println("****************************");
ir.close();
ii.close();
br.close();
}
}

运行结果如下

包含关键字 QQ 的进程有：

****************************
进程名：QQ.exe
进程ID：3956
****************************

Answer 2

简单说一下, 有以下知识我想你就应该可以办得到

1. 在Windows的命令行 tasklist 可以获得进程列表
你先CMD, 再执行tasklist 可以看到类似任务管理器里的进程信息

2. JAVA要调用CMD命令, 用 Process process = Runtime.getRuntime().exec(command);