java调用shell命令并获取执行结果的示例

使用到process和runtime两个类，返回值通过process类的getinputstream()方法获取

package ark;
 
import java.io.bufferedreader;
import java.io.ioexception;
import java.io.inputstreamreader;
import java.util.arraylist;
import java.util.list;
 
public class readcmdline {
	public static void main(string args[]) {
		process process = null;
		list<string> processlist = new arraylist<string>();
		try {
			process = runtime.getruntime().exec("ps -aux");
			bufferedreader input = new bufferedreader(new inputstreamreader(process.getinputstream()));
			string line = "";
			while ((line = input.readline()) != null) {
				processlist.add(line);
			}
			input.close();
		} catch (ioexception e) {
			e.printstacktrace();
		}
 
		for (string line : processlist) {
			system.out.println(line);
		}
	}
}

调用shell脚本，判断是否正常执行，如果正常结束，process的waitfor()方法返回0

	public static void callshell(string shellstring) {
		try {
			process process = runtime.getruntime().exec(shellstring);
			int exitvalue = process.waitfor();
			if (0 != exitvalue) {
				log.error("call shell failed. error code is :" + exitvalue);
			}
		} catch (throwable e) {
			log.error("call shell failed. " + e);
		}
	}

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