\u5728 DevOps \u81ea\u52a8\u5316\u573a\u666f\u4e2d，Java \u7a0b\u5e8f\u5e38\u9700\u8c03\u7528\u670d\u52a1\u5668\u811a\u672c（\u5982 Shell\/Batch）\u6216\u76f4\u63a5\u6267\u884c\u7cfb\u7edf\u547d\u4ee4（\u5982ls\/dir），\u4ee5\u5b9e\u73b0\u90e8\u7f72\u3001\u76d1\u63a7\u3001\u914d\u7f6e\u7ba1\u7406\u7b49\u64cd\u4f5c\u3002\u672c\u6587\u7ed3\u5408 Oracle \u5b98\u65b9\u6587\u6863\u3001Apache \u9876\u7ea7\u9879\u76ee\u89c4\u8303\u53ca\u4f01\u4e1a\u7ea7\u5b9e\u8df5，\u7cfb\u7edf\u89e3\u6790 Java \u8c03\u7528\u811a\u672c \/ \u547d\u4ee4\u7684\u6838\u5fc3\u65b9\u6848，\u5e76\u63d0\u4f9b\u53ef\u76f4\u63a5\u8fd0\u884c\u7684\u4ee3\u7801\u793a\u4f8b\u4e0e\u6743\u5a01\u6821\u9a8c\u4f9d\u636e\u3002<\/p>\n
Java \u8c03\u7528\u811a\u672c \/ \u547d\u4ee4\u7684\u5e95\u5c42\u903b\u8f91\u662f\u901a\u8fc7\u64cd\u4f5c\u7cfb\u7edf\u8fdb\u7a0b\u6267\u884c\u5916\u90e8\u7a0b\u5e8f\u3002\u65e0\u8bba\u4f7f\u7528\u539f\u751f API \u8fd8\u662f\u7b2c\u4e09\u65b9\u5e93，\u6700\u7ec8\u90fd\u4f1a\u8c03\u7528\u4ee5\u4e0b\u673a\u5236：<\/p>\n<\/p>\n
\u6743\u5a01\u4f9d\u636e：Oracle \u5b98\u65b9\u6587\u6863\u300aJava SE 21 ProcessBuilder\u300b\u660e\u786e\u63a8\u8350，\u9002\u5408\u65e0\u989d\u5916\u4f9d\u8d56\u7684\u8f7b\u91cf\u7ea7\u573a\u666f\u3002<\/p>\n
java<\/p>\n
import java.io.BufferedReader;
\nimport java.io.IOException;
\nimport java.io.InputStreamReader;<\/p>\n
public class NativeCommandExecutor {
\n public static void main(String[] args) {
\n String os = System.getProperty("os.name").toLowerCase();
\n String[] command = os.contains("win")
\n ? new String[]{"cmd.exe", "\/c", "dir"} \/\/ Windows\u6267\u884cdir
\n : new String[]{"sh", "-c", "ls -l"}; \/\/ Linux\u6267\u884cls -l<\/p>\n
try {
\n Process process = new ProcessBuilder(command).start();<\/p>\n
\/\/ \u8bfb\u53d6\u8f93\u51fa
\n BufferedReader reader = new BufferedReader(
\n new InputStreamReader(process.getInputStream())
\n );
\n String line;
\n while ((line = reader.readLine()) != null) {
\n System.out.println(line);
\n }<\/p>\n
int exitCode = process.waitFor();
\n System.out.println("\\\\n\u9000\u51fa\u7801：" + exitCode);
\n } catch (IOException | InterruptedException e) {
\n e.printStackTrace();
\n }
\n }
\n}<\/p>\n
\u6743\u5a01\u4f9d\u636e：Apache \u9876\u7ea7\u9879\u76ee\u300aCommons Exec \u6587\u6863\u300b，\u5c01\u88c5\u4e86\u8fdb\u7a0b\u7ba1\u7406\u7684\u590d\u6742\u64cd\u4f5c，\u5185\u7f6e\u8d85\u65f6\u63a7\u5236\u3001\u6d41\u5904\u7406\u7b49\u529f\u80fd\u3002<\/p>\n
java<\/p>\n
import org.apache.commons.exec.CommandLine;
\nimport org.apache.commons.exec.DefaultExecutor;
\nimport org.apache.commons.exec.PumpStreamHandler;
\nimport java.io.ByteArrayOutputStream;
\nimport java.io.IOException;<\/p>\n
public class CommonsExecExample {
\n public static void main(String[] args) {
\n String os = System.getProperty("os.name").toLowerCase();
\n String commandStr = os.contains("win")
\n ? "ping www.baidu.com -n 4" \/\/ Windows ping 4\u6b21
\n : "ping -c 4 www.baidu.com"; \/\/ Linux ping 4\u6b21<\/p>\n
try {
\n CommandLine cmdLine = CommandLine.parse(commandStr);
\n DefaultExecutor executor = new DefaultExecutor();<\/p>\n
\/\/ \u6355\u83b7\u8f93\u51fa\u5e76\u8bbe\u7f6e5\u5206\u949f\u8d85\u65f6
\n ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
\n executor.setStreamHandler(new PumpStreamHandler(outputStream));
\n executor.setWatchdog(new ExecuteWatchdog(300_000)); \/\/ 5\u5206\u949f\u8d85\u65f6<\/p>\n
int exitCode = executor.execute(cmdLine);
\n System.out.println("\u8f93\u51fa：\\\\n" + outputStream);
\n System.out.println("\u9000\u51fa\u7801：" + exitCode);
\n } catch (IOException e) {
\n e.printStackTrace();
\n }
\n }
\n}<\/p>\n
\u6743\u5a01\u4f9d\u636e：Spring Framework \u5b98\u65b9\u6587\u6863\u300aProcessExecutor\u300b，\u65e0\u7f1d\u96c6\u6210 Spring Boot \u7684\u4f9d\u8d56\u6ce8\u5165\u4e0e\u65e5\u5fd7\u7cfb\u7edf\u3002<\/p>\n
java<\/p>\n
import org.springframework.boot.SpringApplication;
\nimport org.springframework.boot.autoconfigure.SpringBootApplication;
\nimport org.springframework.stereotype.Component;
\nimport org.springframework.util.StreamUtils;
\nimport java.nio.charset.StandardCharsets;<\/p>\n
@SpringBootApplication
\npublic class SpringCommandExample {
\n public static void main(String[] args) {
\n SpringApplication.run(SpringCommandExample.class, args);
\n }<\/p>\n
@Component
\n public static class CommandService {
\n private final org.springframework.execution.ProcessExecutor processExecutor;<\/p>\n
public CommandService(org.springframework.execution.ProcessExecutor processExecutor) {
\n this.processExecutor = processExecutor;
\n }<\/p>\n
public void executeFreeCommand() throws Exception {
\n \/\/ \u6267\u884cLinux\u5185\u5b58\u67e5\u770b\u547d\u4ee4
\n Process process = processExecutor
\n .command("free", "-h") \/\/ \u7b49\u4ef7\u4e8e\u5728\u7ec8\u7aef\u6267\u884cfree -h
\n .start();<\/p>\n
String output = StreamUtils.copyToString(
\n process.getInputStream(),
\n StandardCharsets.UTF_8
\n );
\n System.out.println("\u5185\u5b58\u4fe1\u606f：\\\\n" + output);
\n }
\n }
\n}<\/p>\n
\u6743\u5a01\u4f9d\u636e：JSch \u5b98\u65b9 GitHub\u300ajsch\u300b，\u57fa\u4e8e SSH \u534f\u8bae\u5b9e\u73b0\u8fdc\u7a0b\u547d\u4ee4 \/ \u811a\u672c\u8c03\u7528，\u9002\u5408\u8de8\u6570\u636e\u4e2d\u5fc3\u8fd0\u7ef4\u3002<\/p>\n
java<\/p>\n
import com.jcraft.jsch.*;
\nimport java.io.ByteArrayOutputStream;<\/p>\n
public class JSchRemoteExample {
\n public static void main(String[] args) {
\n try {
\n JSch jsch = new JSch();
\n Session session = jsch.getSession("admin", "192.168.1.100", 22);
\n session.setPassword("password123");
\n session.setConfig("StrictHostKeyChecking", "no"); \/\/ \u751f\u4ea7\u73af\u5883\u5efa\u8bae\u914d\u7f6eknown_hosts
\n session.connect(30_000); \/\/ 30\u79d2\u8fde\u63a5\u8d85\u65f6<\/p>\n
\/\/ \u8fdc\u7a0b\u6267\u884ctop\u547d\u4ee4（\u4ec5\u53d61\u6b21\u7ed3\u679c）
\n ChannelExec channel = (ChannelExec) session.openChannel("exec");
\n channel.setCommand("top -n 1");<\/p>\n
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
\n channel.setOutputStream(outputStream);
\n channel.connect(5_000); \/\/ 5\u79d2\u901a\u9053\u8fde\u63a5\u8d85\u65f6<\/p>\n
\/\/ \u7b49\u5f85\u6267\u884c\u5b8c\u6210
\n while (!channel.isClosed()) Thread.sleep(100);<\/p>\n
System.out.println("\u8fdc\u7a0b\u8f93\u51fa：\\\\n" + outputStream);
\n channel.disconnect();
\n session.disconnect();
\n } catch (JSchException | InterruptedException e) {
\n e.printStackTrace();
\n }
\n }
\n}<\/p>\n
\u67d0\u7535\u5546\u516c\u53f8\u4f7f\u7528 Java+Apache Commons Exec \u5b9e\u73b0\u4ee5\u4e0b\u6d41\u7a0b：<\/p>\n<\/p>\n
\u67d0\u94f6\u884c\u4f7f\u7528 Spring Boot+JSch \u5b9e\u73b0\u8de8\u6570\u636e\u4e2d\u5fc3\u670d\u52a1\u5668\u76d1\u63a7：<\/p>\n<\/p>\n
\u98ce\u9669\u573a\u666f：\u7528\u6237\u8f93\u5165\u5305\u542b; rm -rf \/\u7b49\u6076\u610f\u547d\u4ee4\u3002 \u9632\u62a4\u63aa\u65bd：<\/p>\n<\/p>\n
\u6240\u6709\u8fdb\u7a0b\u8c03\u7528\u5fc5\u987b\u8bbe\u7f6e\u8d85\u65f6（\u5982ExecuteWatchdog），\u907f\u514d\u811a\u672c\u5361\u6b7b\u5bfc\u81f4\u8d44\u6e90\u8017\u5c3d\u3002<\/p>\n
\u901a\u8fc7PumpStreamHandler（Commons Exec）\u6216StreamUtils（Spring）\u6355\u83b7\u8f93\u51fa，\u96c6\u6210 Log4j2 \u7b49\u65e5\u5fd7\u7cfb\u7edf，\u5b9e\u73b0\u64cd\u4f5c\u53ef\u8ffd\u6eaf\u3002<\/p>\n
\u603b\u7ed3：Java \u8c03\u7528\u670d\u52a1\u5668\u811a\u672c \/ \u547d\u4ee4\u662f DevOps \u81ea\u52a8\u5316\u7684\u6838\u5fc3\u80fd\u529b，\u539f\u751fProcessBuilder\u9002\u5408\u8f7b\u91cf\u7ea7\u573a\u666f，Apache Commons Exec \u662f\u751f\u4ea7\u73af\u5883\u9996\u9009，Spring ProcessExecutor \u9002\u914d Spring \u751f\u6001，JSch \u6ee1\u8db3\u8fdc\u7a0b\u8fd0\u7ef4\u9700\u6c42\u3002\u7ed3\u5408\u6743\u5a01\u89c4\u8303\u4e0e\u5b89\u5168\u5b9e\u8df5，\u53ef\u6784\u5efa\u5065\u58ee\u7684\u81ea\u52a8\u5316\u8fd0\u7ef4\u7cfb\u7edf\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb821\u6b21\uff0c\u70b9\u8d5e14\u6b21\uff0c\u6536\u85cf16\u6b21\u3002Java \u8c03\u7528\u670d\u52a1\u5668\u811a\u672c \/ \u547d\u4ee4\u662f DevOps \u81ea\u52a8\u5316\u7684\u6838\u5fc3\u80fd\u529b\uff0c\u539f\u751f\u3002<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[3581,3577,3576,3582,3578,3579,3580],"topic":[],"class_list":["post-39626","post","type-post","status-publish","format-standard","hentry","category-server","tag-apache-exec","tag-devops","tag-java","tag-jsch","tag-3578","tag-3579","tag-3580"],"yoast_head":"\n