java调用命令提示符并返回结果（中文无乱码）

最新推荐文章于 2024-03-23 22:41:20 发布

原创最新推荐文章于 2024-03-23 22:41:20 发布 · 851 阅读

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#command #cmd #命令提示符 #java

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本文提供两个Java示例程序，演示如何通过Java代码调用Windows命令提示符（CMD）执行命令，并读取命令执行后的输出结果。第一个示例直接执行ping命令，筛选并输出包含特定字符串的数据行；第二个示例则通过向CMD发送ping命令，再读取CMD的输出。

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.nio.charset.Charset;
/**
 * 调用命令提示符命令并获取返回结果
 * 并首先返回含有指定字符的一行
 * 并解决中文操作系统代码
 * @author 
 *
 */
public class TestCMD {
	public static void main(String[] args) throws UnsupportedEncodingException {
		String command = "ping 114.114.114.114";
		String s = "数据包";
		String line = null;
		StringBuilder sb = new StringBuilder();
		Runtime runtime = Runtime.getRuntime();
		try {
			Process process = runtime.exec(command);
			BufferedReader bufferedReader = 
					new BufferedReader(new InputStreamReader(process.getInputStream(), Charset.forName("GBK")));

			while ((line = bufferedReader.readLine()) != null) {
				sb.append(line + "\n");
				//System.out.println(line);   //可在此处输出，则可不用装入StringBuilder
				if (line.contains(s)) {
					System.out.println(line);
					System.out.println("----------------------------------------");
				}
			}
		} catch (IOException e) {
			e.printStackTrace();
		}
		String newStr = new String(sb.toString());
		System.out.println(newStr);
	}
}

-----------------------

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.SequenceInputStream;
/**
 * 方法二
 * @author 
 *
 */
public class TestCMD2 {
	public static void main(String[] args) {
		try {
			Process process = Runtime.getRuntime().exec("cmd");
			SequenceInputStream sis = new SequenceInputStream(process.getInputStream(), process.getErrorStream());
			InputStreamReader isr = new InputStreamReader(sis, "gbk");
			BufferedReader br = new BufferedReader(isr);
			// next command
			OutputStreamWriter osw = new OutputStreamWriter(process.getOutputStream());
			BufferedWriter bw = new BufferedWriter(osw);

			bw.write("ping 114.114.114.114");
			bw.newLine();
			bw.flush();
			bw.close();
			osw.close();
			// read
			String line = null;
			while (null != (line = br.readLine())) {
				System.out.println(line);
			}
			process.destroy();
			br.close();
			isr.close();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
}