kafka学习之综合运用elk日志系统搭建

使用kafka、elasticsearch、搭建一个elk日志管理平台：

流程图：

 

分别安装：jdk、zookeeper、kafka、logstash、es、kibana

logstash安装和配置：

https://www.cnblogs.com/codehello/articles/16467021.html

logstash配置文件:logstash_kafka.conf

# Sample Logstash configuration for creating a simple
# Beats -> Logstash -> Elasticsearch pipeline.

input {
  kafka {
    bootstrap_servers=>"127.0.0.1:9092"
    topics=>["kafka-log"]
  }
}

output {
  stdout { codec => rubydebug}
  elasticsearch {
    hosts => ["http://localhost:9200"]
    index => "kafka-log"
    #user => "elastic"
    #password => "changeme"
  }
}

启动：进入Logstash的bin目录执行命令

bin\logstash.bat -f config\logstash_kafka.conf

 

启动报错：
报错：Logstash could not be started because there is already another instance using the configured data directory. If you wish to run multiple instances, you must change the "path.data" setting.
原因：之前运行的instance有缓冲，保存在path.data里面有.lock文件，删除掉就可以。
解决：在 logstash.yml 文件中找到 Data path 的路径(默认在安装目录的data目录下）

1,pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <parent>
        <artifactId>spring-boot</artifactId>
        <groupId>com.bsoft</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>springboot-elk</artifactId>
    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                </configuration>
            </plugin>
        </plugins>
    </build>

    <properties>
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>
    </properties>
<dependencies>
    <!--kafka-->
    <dependency>
        <groupId>org.springframework.kafka</groupId>
        <artifactId>spring-kafka</artifactId>
    </dependency>
    <!--es-->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-elasticsearch</artifactId>
    </dependency>
</dependencies>
</project>

 

2，配置文件application.yml

spring:
  elasticsearch:
    rest:
      uris: 127.0.0.1:9200
  jackson:
    time-zone: GMT+8
    date-format: yyyy-MM-dd HH:mm:ss
  kafka:
    bootstrap-servers: 127.0.0.1:9092
    producer:
      batch-size: 300
      retries: 1
      buffer-memory: 33554432
      key-serializer: org.apache.kafka.common.serialization.StringSerializer
      value-serializer: org.apache.kafka.common.serialization.StringSerializer
      acks: 1
    consumer:
      auto-offset-reset: latest
      #是否开启自动提交,消费之后自动提交offset
      enable-auto-commit: false
      key-deserializer: org.apache.kafka.common.serialization.StringDeserializer
      #value的解码方式
      value-deserializer: org.apache.kafka.common.serialization.StringDeserializer
      group-id: bsoft_group
      max-poll-records: 200 #批量消费消息条数
    listener:
      concurrency: 10 #线程数
      missing-topics-fatal: false #默认false,如果不存在topic，项目启动报错
      ack-mode: manual
server:
  port: 9999

3,kafka配置文件 KafkaConfig.java

package com.bsoft.elk.config;

import org.apache.kafka.clients.admin.NewTopic;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

@Configuration
public class KafkaConfig {

    @Bean
    public NewTopic newTopic() {
        return new NewTopic("kafka-log", 3, (short)1);
    }
}

4,ES工具类 ElasticSearchUtils.java

package com.bsoft.elk.util;

import com.alibaba.fastjson.JSON;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.apache.http.HttpHost;
import org.apache.http.auth.AuthScope;
import org.apache.http.auth.UsernamePasswordCredentials;
import org.apache.http.client.CredentialsProvider;
import org.apache.http.impl.client.BasicCredentialsProvider;
import org.elasticsearch.action.admin.indices.create.CreateIndexRequest;
import org.elasticsearch.action.admin.indices.create.CreateIndexResponse;
import org.elasticsearch.action.admin.indices.delete.DeleteIndexRequest;
import org.elasticsearch.action.bulk.BulkRequest;
import org.elasticsearch.action.bulk.BulkResponse;
import org.elasticsearch.action.delete.DeleteRequest;
import org.elasticsearch.action.delete.DeleteResponse;
import org.elasticsearch.action.get.GetRequest;
import org.elasticsearch.action.get.GetResponse;
import org.elasticsearch.action.index.IndexRequest;
import org.elasticsearch.action.index.IndexResponse;
import org.elasticsearch.action.search.SearchRequest;
import org.elasticsearch.action.search.SearchResponse;
import org.elasticsearch.action.support.master.AcknowledgedResponse;
import org.elasticsearch.action.update.UpdateRequest;
import org.elasticsearch.action.update.UpdateResponse;
import org.elasticsearch.client.RequestOptions;
import org.elasticsearch.client.RestClient;
import org.elasticsearch.client.RestClientBuilder;
import org.elasticsearch.client.RestHighLevelClient;
import org.elasticsearch.client.indices.GetIndexRequest;
import org.elasticsearch.common.Strings;
import org.elasticsearch.common.text.Text;
import org.elasticsearch.common.unit.TimeValue;
import org.elasticsearch.common.xcontent.XContentType;
import org.elasticsearch.search.SearchHit;
import org.elasticsearch.search.builder.SearchSourceBuilder;
import org.elasticsearch.search.fetch.subphase.FetchSourceContext;
import org.elasticsearch.search.fetch.subphase.highlight.HighlightBuilder;
import org.elasticsearch.search.fetch.subphase.highlight.HighlightField;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

import javax.annotation.PostConstruct;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.UUID;

@Slf4j
@Component
public class ElasticSearchUtils {

    @Value("${spring.elasticsearch.rest.uris}")
    private String uris;
//    @Value("${spring.elasticsearch.rest.username}")
//    private String username;
//    @Value("${spring.elasticsearch.rest.password}")
//    private String password;

    private RestHighLevelClient restHighLevelClient;

    /**
     * 在Servlet容器初始化前执行
     */
    @PostConstruct
    private void init() {
        try {
            if (restHighLevelClient != null) {
                restHighLevelClient.close();
            }
            if (StringUtils.isBlank(uris)) {
                log.error("spring.elasticsearch.rest.uris is blank");
                return;
            }

            //解析yml中的配置转化为HttpHost数组
            String[] uriArr = uris.split(",");
            HttpHost[] httpHostArr = new HttpHost[uriArr.length];
            int i = 0;
            for (String uri : uriArr) {
                if (StringUtils.isEmpty(uris)) {
                    continue;
                }
                try {
                    //拆分出ip和端口号
                    String[] split = uri.split(":");
                    String host = split[0];
                    String port = split[1];
                    HttpHost httpHost = new HttpHost(host, Integer.parseInt(port), "http");
                    httpHostArr[i++] = httpHost;
                } catch (Exception e) {
                    log.error(e.getMessage());
                }
            }
            RestClientBuilder builder = RestClient.builder(httpHostArr);
//            CredentialsProvider credentialsProvider = new BasicCredentialsProvider();
//            credentialsProvider.setCredentials(AuthScope.ANY, new UsernamePasswordCredentials(username, password));
//            builder.setHttpClientConfigCallback(f -> f.setDefaultCredentialsProvider(credentialsProvider));
            restHighLevelClient = new RestHighLevelClient(builder);
        } catch (IOException e) {
            log.error(e.getMessage());
        }
    }

    /**
     * 创建索引
     *
     * @param index
     * @return
     */
    public boolean createIndex(String index) throws IOException {
        if (isIndexExist(index)) {
            log.error("Index is  exits!");
            return false;
        }
        //1.创建索引请求
        CreateIndexRequest request = new CreateIndexRequest(index);
        //2.执行客户端请求
        CreateIndexResponse response = restHighLevelClient.indices()
                .create(request, RequestOptions.DEFAULT);
        return response.isAcknowledged();
    }

    /**
     * 判断索引是否存在
     *
     * @param index
     * @return
     */
    public boolean isIndexExist(String index) throws IOException {
        GetIndexRequest request = new GetIndexRequest(index);
        return restHighLevelClient.indices().exists(request, RequestOptions.DEFAULT);
    }

    /**
     * 删除索引
     *
     * @param index
     * @return
     */
    public boolean deleteIndex(String index) throws IOException {
        if (!isIndexExist(index)) {
            log.error("Index is not exits!");
            return false;
        }
        DeleteIndexRequest request = new DeleteIndexRequest(index);
        AcknowledgedResponse delete = restHighLevelClient.indices()
                .delete(request, RequestOptions.DEFAULT);
        return delete.isAcknowledged();
    }
    /**
     * 新增/更新数据
     *
     * @param object 要新增/更新的数据
     * @param index  索引，类似数据库
     * @param id     数据ID
     * @return
     */
    public String submitData(Object object, String index, String id) throws IOException {
        if (null == id) {
            return addData(object, index);
        }
        if (this.existsById(index, id)) {
            return this.updateDataByIdNoRealTime(object, index, id);
        } else {
            return addData(object, index, id);
        }
    }
    /**
     * 新增数据，自定义id
     *
     * @param object 要增加的数据
     * @param index  索引，类似数据库
     * @param id     数据ID,为null时es随机生成
     * @return
     */
    public String addData(Object object, String index, String id) throws IOException {
        if (null == id) {
            return addData(object, index);
        }
        if (this.existsById(index, id)) {
            return this.updateDataByIdNoRealTime(object, index, id);
        }
        //创建请求
        IndexRequest request = new IndexRequest(index);
        request.id(id);
        request.timeout(TimeValue.timeValueSeconds(1));
        //将数据放入请求 json
        request.source(JSON.toJSONString(object), XContentType.JSON);
        //客户端发送请求
        IndexResponse response = restHighLevelClient.index(request, RequestOptions.DEFAULT);
        log.info("添加数据成功 索引为: {}, response 状态: {}, id为: {}", index, response.status().getStatus(), response.getId());
        return response.getId();
    }

    /**
     * 数据添加 随机id
     *
     * @param object 要增加的数据
     * @param index  索引，类似数据库
     * @return
     */
    public String addData(Object object, String index) throws IOException {
        return addData(object, index, UUID.randomUUID().toString().replaceAll("-", "").toUpperCase());
    }

    /**
     * 通过ID删除数据
     *
     * @param index 索引，类似数据库
     * @param id    数据ID
     * @return
     */
    public String deleteDataById(String index, String id) throws IOException {
        DeleteRequest request = new DeleteRequest(index, id);
        DeleteResponse deleteResponse = restHighLevelClient.delete(request, RequestOptions.DEFAULT);
        return deleteResponse.getId();
    }

    /**
     * 通过ID 更新数据
     *
     * @param object 要更新数据
     * @param index  索引，类似数据库
     * @param id     数据ID
     * @return
     */
    public String updateDataById(Object object, String index, String id) throws IOException {
        UpdateRequest updateRequest = new UpdateRequest(index, id);
        updateRequest.timeout("1s");
        updateRequest.doc(JSON.toJSONString(object), XContentType.JSON);
        UpdateResponse updateResponse = restHighLevelClient.update(updateRequest, RequestOptions.DEFAULT);
        log.info("索引为: {}, id为: {},updateResponseID：{}, 更新数据成功", index, id, updateResponse.getId());
        return updateResponse.getId();
    }

    /**
     * 通过ID 更新数据,保证实时性
     *
     * @param object 要增加的数据
     * @param index  索引，类似数据库
     * @param id     数据ID
     * @return
     */
    public String updateDataByIdNoRealTime(Object object, String index, String id) throws IOException {
        //更新请求
        UpdateRequest updateRequest = new UpdateRequest(index, id);

        //保证数据实时更新
        updateRequest.setRefreshPolicy("wait_for");

        updateRequest.timeout("1s");
        updateRequest.doc(JSON.toJSONString(object), XContentType.JSON);
        //执行更新请求
        UpdateResponse updateResponse = restHighLevelClient.update(updateRequest, RequestOptions.DEFAULT);
        log.info("索引为: {}, id为: {},updateResponseID：{}, 实时更新数据成功", index, id, updateResponse.getId());
        return updateResponse.getId();
    }

    /**
     * 通过ID获取数据
     *
     * @param index  索引，类似数据库
     * @param id     数据ID
     * @param fields 需要显示的字段，逗号分隔（缺省为全部字段）
     * @return
     */
    public Map<String, Object> searchDataById(String index, String id, String fields) throws IOException {
        GetRequest request = new GetRequest(index, id);
        if (StringUtils.isNotEmpty(fields)) {
            //只查询特定字段。如果需要查询所有字段则不设置该项。
            request.fetchSourceContext(new FetchSourceContext(true, fields.split(","), Strings.EMPTY_ARRAY));
        }
        GetResponse response = restHighLevelClient.get(request, RequestOptions.DEFAULT);
        return response.getSource();
    }

    /**
     * 通过ID判断文档是否存在
     *
     * @param index 索引，类似数据库
     * @param id    数据ID
     * @return
     */
    public boolean existsById(String index, String id) throws IOException {
        GetRequest request = new GetRequest(index, id);
        //不获取返回的_source的上下文
        request.fetchSourceContext(new FetchSourceContext(false));
        request.storedFields("_none_");
        return restHighLevelClient.exists(request, RequestOptions.DEFAULT);
    }

    /**
     * 批量插入false成功
     *
     * @param index   索引，类似数据库
     * @param objects 数据
     * @return
     */
    public boolean bulkPost(String index, List<?> objects) {
        BulkRequest bulkRequest = new BulkRequest();
        BulkResponse response = null;
        //最大数量不得超过20万
        for (Object object : objects) {
            IndexRequest request = new IndexRequest(index);
            request.source(JSON.toJSONString(object), XContentType.JSON);
            bulkRequest.add(request);
        }
        try {
            response = restHighLevelClient.bulk(bulkRequest, RequestOptions.DEFAULT);
        } catch (IOException e) {
            e.printStackTrace();
        }
        return null != response && response.hasFailures();
    }


    /**
     * 获取低水平客户端
     *
     * @return
     */
    public RestClient getLowLevelClient() {
        return restHighLevelClient.getLowLevelClient();
    }

    /**
     * 高亮结果集 特殊处理
     * map转对象 JSONObject.parseObject(JSONObject.toJSONString(map), Content.class)
     *
     * @param searchResponse
     * @param highlightField
     */
    private List<Map<String, Object>> setSearchResponse(SearchResponse searchResponse, String highlightField) {
        //解析结果
        ArrayList<Map<String, Object>> list = new ArrayList<>();
        for (SearchHit hit : searchResponse.getHits().getHits()) {
            Map<String, HighlightField> high = hit.getHighlightFields();
            HighlightField title = high.get(highlightField);
            //原来的结果
            Map<String, Object> sourceAsMap = hit.getSourceAsMap();
            //解析高亮字段,将原来的字段换为高亮字段
            if (title != null) {
                Text[] texts = title.fragments();
                StringBuilder nTitle = new StringBuilder();
                for (Text text : texts) {
                    nTitle.append(text);
                }
                //替换
                sourceAsMap.put(highlightField, nTitle.toString());
            }
            list.add(sourceAsMap);
        }
        return list;
    }

    /**
     * 查询并分页
     *
     * @param index          索引名称
     * @param query          查询条件
     * @param highlightField 高亮字段
     * @return
     */
    public List<Map<String, Object>> searchListData(String index,
                                                    SearchSourceBuilder query,
                                                    String highlightField) throws IOException {
        SearchRequest request = new SearchRequest(index);

        //高亮
        HighlightBuilder highlight = new HighlightBuilder();
        highlight.field(highlightField);
        //关闭多个高亮
        highlight.requireFieldMatch(false);
        highlight.preTags("<span style='color:red'>");
        highlight.postTags("</span>");
        query.highlighter(highlight);
        //不返回源数据。只有条数之类的数据。
        //builder.fetchSource(false);
        request.source(query);
        SearchResponse response = restHighLevelClient.search(request, RequestOptions.DEFAULT);
        log.info("totalHits:" + response.getHits().getTotalHits());
        if (response.status().getStatus() == 200) {
            // 解析对象
            return setSearchResponse(response, highlightField);
        }
        return null;
    }
}

5，基于AOP拦截服务器日志信息（Logstash订阅主题并输出到ES）

实现思路：主要利用AOP的“前置通知” 和 “后置通知” 将请求和响应日志封装成JSON，并推送到Kafak中。

1)LogContainer.java

package com.bsoft.elk.aop;

import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.kafka.core.KafkaTemplate;
import org.springframework.stereotype.Component;

import java.util.concurrent.BlockingDeque;
import java.util.concurrent.LinkedBlockingDeque;

/****
 * 开启异步线程发送日志
 */
@Component
public class LogContainer {
    private static BlockingDeque<String> logDeque = new LinkedBlockingDeque<>();
    @Autowired
    private KafkaTemplate<String, Object> kafkaTemplate;

    public LogContainer() {
        // 初始化
        new LogThreadKafka().start();
    }
    /**
     * 存入日志
     *
     * @param log
     */
    public void put(String log) {
        logDeque.offer(log);
    }

    class LogThreadKafka extends Thread {
        @Override
        public void run() {
            while (true) {
                String log = logDeque.poll();
                if (!StringUtils.isEmpty(log)) {
                    // 将消息投递kafka中
                    kafkaTemplate.send("kafka-log", log);
                }
            }
        }
    }
}

2)日志格式RequestPojo.java

package com.bsoft.elk.pojo;

import lombok.Data;

import java.util.Date;

/***
 * 日志格式
 */
@Data
public class RequestPojo {
    private String url;
    private String method;
    private String signature;
    private String args;
    private String  requestTime;
    private String address;
    private String error;
}

 

3)AopLogAspect.java

package com.bsoft.elk.aop;

import com.alibaba.fastjson.JSONObject;
import com.bsoft.elk.pojo.RequestPojo;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.*;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.kafka.core.KafkaTemplate;
import org.springframework.stereotype.Component;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import javax.servlet.http.HttpServletRequest;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.text.SimpleDateFormat;
import java.util.Arrays;
import java.util.Date;

/***
 *日志切面
 */
@Aspect
@Component
public class AopLogAspect {
    @Value("${server.port}")
    private String serverPort;
    @Autowired
    private KafkaTemplate<String, Object> kafkaTemplate;

    // 申明一个切点 里面是 execution表达式
    @Pointcut("execution(* com.xiaojie.elk.service.*.*(..))")
    private void serviceAspect() {
    }

    @Autowired
    private LogContainer logContainer;

    // 请求method前打印内容
    @Before(value = "serviceAspect()")
    public void methodBefore(JoinPoint joinPoint) {
        ServletRequestAttributes requestAttributes = (ServletRequestAttributes) RequestContextHolder
                .getRequestAttributes();
        HttpServletRequest request = requestAttributes.getRequest();
        RequestPojo requestPojo = new RequestPojo();
        SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");// 设置日期格式
        requestPojo.setRequestTime(df.format(new Date()));
        requestPojo.setUrl(request.getRequestURL().toString());
        requestPojo.setMethod(request.getMethod());
        requestPojo.setSignature(joinPoint.getSignature().toString());
        requestPojo.setArgs(Arrays.toString(joinPoint.getArgs()));
        // IP地址信息
        requestPojo.setAddress(getIpAddr(request) + ":" + serverPort);
        // 将日志信息投递到kafka中
        String log = JSONObject.toJSONString(requestPojo);
        logContainer.put(log);
    }

    // 在方法执行完结后打印返回内容
    @AfterReturning(returning = "o", pointcut = "serviceAspect()")
    public void methodAfterReturing(Object o) {
        ServletRequestAttributes requestAttributes = (ServletRequestAttributes) RequestContextHolder
                .getRequestAttributes();
        HttpServletRequest request = requestAttributes.getRequest();
        JSONObject respJSONObject = new JSONObject();
        JSONObject jsonObject = new JSONObject();
        SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");// 设置日期格式
        jsonObject.put("response_time", df.format(new Date()));
        jsonObject.put("response_content", JSONObject.toJSONString(o));
        // IP地址信息
        jsonObject.put("ip_addres", getIpAddr(request) + ":" + serverPort);
        respJSONObject.put("response", jsonObject);
        logContainer.put(respJSONObject.toJSONString());
    }

    /**
     * 异常通知
     *
     * @param joinPoint
     */
    @AfterThrowing(pointcut = "serviceAspect()", throwing = "e")
    public void serviceAspect(JoinPoint joinPoint, Exception e) {
        ServletRequestAttributes requestAttributes = (ServletRequestAttributes) RequestContextHolder
                .getRequestAttributes();
        HttpServletRequest request = requestAttributes.getRequest();
        SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");// 设置日期格式
        RequestPojo requestPojo = new RequestPojo();
        requestPojo.setRequestTime(df.format(new Date()));
        requestPojo.setUrl(request.getRequestURL().toString());
        requestPojo.setMethod(request.getMethod());
        requestPojo.setSignature(joinPoint.getSignature().toString());
        requestPojo.setArgs(Arrays.toString(joinPoint.getArgs()));
        // IP地址信息
        requestPojo.setAddress(getIpAddr(request) + ":" + serverPort);
        requestPojo.setError(e.toString());
        // 将日志信息投递到kafka中
        String log = JSONObject.toJSONString(requestPojo);
        logContainer.put(log);
    }

    /***
     * 通过ip和端口弥补了当发生JVM内存泄漏、内存溢出等情况无法定位到具体服务器，这样便于快速排查问题。
     * @param request
     * @return
     */
    public static String getIpAddr(HttpServletRequest request) {
        //X-Forwarded-For（XFF）是用来识别通过HTTP代理或负载均衡方式连接到Web服务器的客户端最原始的IP地址的HTTP请求头字段。
        String ipAddress = request.getHeader("x-forwarded-for");
        if (ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) {
            ipAddress = request.getHeader("Proxy-Client-IP");
        }
        if (ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) {
            ipAddress = request.getHeader("WL-Proxy-Client-IP");
        }
        if (ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) {
            ipAddress = request.getRemoteAddr();
            if (ipAddress.equals("127.0.0.1") || ipAddress.equals("0:0:0:0:0:0:0:1")) {
                //根据网卡取本机配置的IP
                InetAddress inet = null;
                try {
                    inet = InetAddress.getLocalHost();
                } catch (UnknownHostException e) {
                    e.printStackTrace();
                }
                ipAddress = inet.getHostAddress();
            }
        }
        //对于通过多个代理的情况，第一个IP为客户端真实IP,多个IP按照','分割
        if (ipAddress != null && ipAddress.length() > 15) { //"***.***.***.***".length() = 15
            if (ipAddress.indexOf(",") > 0) {
                ipAddress = ipAddress.substring(0, ipAddress.indexOf(","));
            }
        }
        return ipAddress;
    }
}

6,控制类案例

package com.bsoft.elk.controller;

import com.bsoft.elk.service.IndexService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;


@RestController
public class IndexController {

    @Autowired
    private IndexService indexService;
    @GetMapping("/index")
    public String index(String name,String pwd){
        indexService.index(name,pwd);
        return  "用户名称："+name+"密码是：************";
    }
}

7，实现方法

package com.bsoft.elk.service;

import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Service;


@Service
@Slf4j
public class IndexService {

    public void index(String name,String pwd){
        log.info("接收到用户名:{}>>>>>>>>>>>>>密码{}",name,pwd);
    }
}

8，启动工程

package com.bsoft.elk;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;


@SpringBootApplication
public class ElkApp {
    public static void main(String[] args) {
        SpringApplication.run(ElkApp.class);
    }
}

 

请求接口查看日志：

参考资料：

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posted on 2022-07-12 11:14  让代码飞  阅读(86)  评论(0)    收藏  举报

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