[Java知识库]java连接Linux

1. 导入依赖

   <dependency>
           <groupId>org.springframework.boot</groupId>
           <artifactId>spring-boot-starter-web</artifactId>
           <version>2.6.3</version>
           <exclusions>
               <exclusion>
                   <groupId>org.springframework.boot</groupId>
                   <artifactId>spring-boot-starter-logging</artifactId>
               </exclusion>
           </exclusions>
       </dependency>
       <dependency>
           <groupId>org.springframework.boot</groupId>
           <artifactId>`spring-boot-starter-log4j2`</artifactId>
           <version>2.6.3</version>
       </dependency>
       <dependency>
           <groupId>org.springframework.boot</groupId>
           <artifactId>spring-boot-starter-actuator</artifactId>
           <version>2.6.3</version>
       </dependency>
       <dependency>
           <groupId>org.springframework.boot</groupId>
           <artifactId>spring-boot-starter-test</artifactId>
           <version>2.6.3</version>
           <scope>test</scope>
       </dependency>
       <dependency>
           <groupId>com.hierynomus</groupId>
           <artifactId>sshj</artifactId>
           <version>0.29.0</version>
       </dependency>
   
   

   <build>
           <plugins>
               <plugin>
                   <groupId>org.springframework.boot</groupId>
                   <artifactId>spring-boot-maven-plugin</artifactId>
                   <version>2.6.3</version>
               </plugin>
           </plugins>
       </build>
   

2. 测试代码

   public static void main(String... args) throws IOException {
       final SSHClient ssh = new SSHClient();
       ssh.addHostKeyVerifier(new PromiscuousVerifier());
       ssh.connect("10.2.176.239", 22);
       ssh.authPassword("root", "Rzxlszy1Bpmcl");
       Session session = null;
       try {
           session = ssh.startSession();
           String execute = "grep CompositeLog /root/logs/system.log";
           final Session.Command cmd = session.exec(execute);
           InputStream inputStream = cmd.getInputStream();
           OutputStream outputStream = IOUtils.readFully(inputStream);
           String str = outputStream.toString();
           System.out.println(str);
           cmd.join(5, TimeUnit.SECONDS);
           System.out.println("n** exit status: " + cmd.getExitStatus());
       } finally {
           try {
               if (session != null) {
                   session.close();
               }
           } catch (IOException e) {
               // 处理异常
           }
           ssh.disconnect();
       }
   }
   

3. 问题讲述

   spring-boot-starter-log4j2
   

   这个日志依赖为什么要导入，因为连接Linux的依赖中有一个和这个依赖相关的API,如果不导入这个依赖会报错，错误如下:
   
   这个错误的具体成因，我还不太清楚，有喜欢研究的可以自己研究一下。