Web端查看Liunx日志，网页端查看Liunx日志

1, 导入依赖包

        <dependency>
            <groupId>com.hierynomus</groupId>
            <artifactId>sshj</artifactId>
            <version>0.29.0</version>
        </dependency>

2，控制器层

package com.view.controller;

import cn.hutool.core.util.StrUtil;
import com.view.annotation.BlogAuthentication;
import com.view.result.BlogResult;
import com.view.service.BlogConfigurationService;
import com.view.util.LogUtil;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

import java.io.IOException;

@RestController
@RequestMapping("/log")
public class LogController {

    @Autowired
    BlogConfigurationService blogConfigurationService;


    @GetMapping("/list")
    @ApiOperation(value = "日志",notes = "根据pageNo(行数) key(关键字) 查询日志")
    public BlogResult logList(@RequestParam Integer pageNo, @RequestParam String key){
        try {
            return BlogResult.success(LogUtil.tail(pageNo,key,blogConfigurationService.list().get(0)));
        } catch (IOException e) {
            e.printStackTrace();
        }
        return BlogResult.error("日志查询失败");
    }

}

3，服务层，关键！！！
这边返回的是一个div ，字体颜色，层的宽度和高度
可自行调整，username password 你Linux的连接名

这个命令最终对应了
String execute = “tail -n 你的行数 /home/web/test.log | grep ‘关键字’
BlogConfiguration 这个对象对应颜色，可自行调整

package com.view.util;

import cn.hutool.core.date.DateUtil;
import cn.hutool.core.util.StrUtil;
import com.baomidou.mybatisplus.extension.service.IService;
import com.view.bean.BlogConfiguration;
import com.view.service.BlogConfigurationService;
import lombok.extern.slf4j.Slf4j;
import net.schmizz.sshj.SSHClient;
import net.schmizz.sshj.common.IOUtils;
import net.schmizz.sshj.connection.channel.direct.Session;
import net.schmizz.sshj.transport.verification.PromiscuousVerifier;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;
import org.springframework.util.StringUtils;

import javax.annotation.PostConstruct;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Date;
import java.util.concurrent.TimeUnit;


@Slf4j
@Component
public class LogUtil {


    private static String hostname;
    private static int port;
    private static String username;
    private static String password;
    private static String logAddress;


    @Value("${logConfigurable.hostname}")
    public void setHostname(String hostname) {
        LogUtil.hostname = hostname;
    }
    @Value("${logConfigurable.port}")
    public void setPort(int port) {
        LogUtil.port = port;
    }
    @Value("${logConfigurable.username}")
    public void setUsername(String username) {
        LogUtil.username = username;
    }
    @Value("${logConfigurable.password}")
    public void setPassword(String password) {
        LogUtil.password = password;
    }
    @Value("${logConfigurable.logAddress}")
    public void setLogAddress(String logAddress) {
        LogUtil.logAddress = logAddress;
    }

    public static String tail(int row, String key,BlogConfiguration blogConfiguration) throws IOException {
        final SSHClient ssh = new SSHClient();
        ssh.addHostKeyVerifier(new PromiscuousVerifier());
        ssh.connect(hostname, port);
        ssh.authPassword(username, password);
        try (Session session = ssh.startSession()) {
            String execute = "tail -n " + row + " "+logAddress+" | grep '" + (StrUtil.isEmpty(key) ? "" : key) + "'";
            final Session.Command cmd = session.exec(execute);
            InputStream inputStream = cmd.getInputStream();
            OutputStream outputStream = IOUtils.readFully(inputStream);
            int year = DateUtil.year(new Date());
            String replaceAndBr = "<div style='width:100%;height:auto;position: absolute;left: 0px;top:0px;padding-left:15px;" +
                    "background-color:"+blogConfiguration.getLogBgColor()+";color:"+blogConfiguration.getLogFontColor()+";'>"
            +outputStream.toString().replaceAll(year + "-", "<br/>" + year + "-")+"</div>";
            return StrUtil.isEmpty(key)?replaceAndBr:replaceAndBr
            .replaceAll(key,"<span style='border:1px solid "+blogConfiguration.getLogFontKeyColor()+";'>"+key+"</span>");
        } finally {
            // 处理异常
            ssh.disconnect();
        }
    }

}