<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">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>cn.how2j.trend</groupId>
        <artifactId>trendParentProject</artifactId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>
    <groupId>cn.how2j.trend</groupId>
    <artifactId>index-codes-service</artifactId>

    <dependencies>
        <!-- springboot web -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <!-- eureka-client -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>
        <!-- redis -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-redis</artifactId>
        </dependency>

    </dependencies>

</project>

spring:
  application:
    name: index-codes-service
eureka:
  client:
    serviceUrl:
      defaultZone: http://localhost:8761/eureka/

package cn.how2j.trend.config;

import org.springframework.boot.web.context.WebServerInitializedEvent;
import org.springframework.context.ApplicationListener;
import org.springframework.stereotype.Component;

@Component
public class IpConfiguration implements ApplicationListener<WebServerInitializedEvent> {

    private int serverPort;

    @Override
    public void onApplicationEvent(WebServerInitializedEvent event) {
        this.serverPort = event.getWebServer().getPort();
    }

    public int getPort() {
        return this.serverPort;
    }
}

package cn.how2j.trend.config;

import java.time.Duration;

import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.cache.CacheManager;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.cache.RedisCacheConfiguration;
import org.springframework.data.redis.cache.RedisCacheManager;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.RedisSerializationContext;
import org.springframework.data.redis.serializer.RedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;

@Configuration
@ConfigurationProperties(prefix = "spring.cache.redis")
public class RedisCacheConfig {
 
    private Duration timeToLive = Duration.ZERO;
    public void setTimeToLive(Duration timeToLive) {
        this.timeToLive = timeToLive;
    }

    @Bean
    public CacheManager cacheManager(RedisConnectionFactory factory) {
        RedisSerializer<String> redisSerializer = new StringRedisSerializer();
        
        Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);
 
        //解决查询缓存转换异常的问题
        ObjectMapper om = new ObjectMapper();
        om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.PUBLIC_ONLY);
        om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
        jackson2JsonRedisSerializer.setObjectMapper(om);
 
        // 配置序列化（解决乱码的问题）
        RedisCacheConfiguration config = RedisCacheConfiguration.defaultCacheConfig()
                .entryTtl(timeToLive)
                .serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(redisSerializer))
                .serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(jackson2JsonRedisSerializer))
                .disableCachingNullValues();
 
        RedisCacheManager cacheManager = RedisCacheManager.builder(factory)
                .cacheDefaults(config)
                .build();
        return cacheManager;
    }
}
 

package cn.how2j.trend.pojo;

import java.io.Serializable;

public class Index implements Serializable{
	String code;
	String name;
	public String getCode() {
		return code;
	}
	public void setCode(String code) {
		this.code = code;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	
}

package cn.how2j.trend.service;

import java.util.List;

import org.springframework.cache.annotation.CacheConfig;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.stereotype.Service;

import cn.how2j.trend.pojo.Index;
import cn.hutool.core.collection.CollUtil;

@Service
@CacheConfig(cacheNames="indexes")
public class IndexService {
	private List<Index> indexes;

    @Cacheable(key="'all_codes'")
    public List<Index> get(){
    	Index index = new Index();
    	index.setName("无效指数代码");
    	index.setCode("000000");
    	return CollUtil.toList(index);
    }
}

package cn.how2j.trend.web;

import java.util.List;

import cn.how2j.trend.config.IpConfiguration;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.CrossOrigin;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

import cn.how2j.trend.pojo.Index;
import cn.how2j.trend.service.IndexService;
 
@RestController
public class IndexController {
	@Autowired IndexService indexService;
	@Autowired IpConfiguration ipConfiguration;
	
//	http://127.0.0.1:8011/codes
	
	@GetMapping("/codes")
	@CrossOrigin
	public List<Index> codes() throws Exception {
		System.out.println("current instance's port is "+ ipConfiguration.getPort());
		return indexService.get();
	}
}

package cn.how2j.trend;

import cn.hutool.core.convert.Convert;
import cn.hutool.core.thread.ThreadUtil;
import cn.hutool.core.util.NetUtil;
import cn.hutool.core.util.NumberUtil;
import cn.hutool.core.util.StrUtil;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;

import java.util.Scanner;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;

@SpringBootApplication
@EnableEurekaClient
@EnableCaching
public class IndexCodesApplication {
    public static void main(String[] args) {
        int port = 0;
        int defaultPort = 8011;
        int redisPort = 6379;
        int eurekaServerPort = 8761;

        if(NetUtil.isUsableLocalPort(eurekaServerPort)) {
        	System.err.printf("检查到端口%d 未启用，判断 eureka 服务器没有启动，本服务无法使用，故退出%n", eurekaServerPort );
        	System.exit(1);
        }

        if(NetUtil.isUsableLocalPort(redisPort)) {
            System.err.printf("检查到端口%d 未启用，判断 redis 服务器没有启动，本服务无法使用，故退出%n", redisPort );
            System.exit(1);
        }
        
        if(null!=args && 0!=args.length) {
        	for (String arg : args) {
				if(arg.startsWith("port=")) {
					String strPort= StrUtil.subAfter(arg, "port=", true);
					if(NumberUtil.isNumber(strPort)) {
						port = Convert.toInt(strPort);
					}
				}
			}
        }        
        
        if(0==port) {
            Future<Integer> future = ThreadUtil.execAsync(() ->{
                int p = 0;
                System.out.printf("请于5秒钟内输入端口号, 推荐  %d ,超过5秒将默认使用 %d %n",defaultPort,defaultPort);
                Scanner scanner = new Scanner(System.in);
                while(true) {
                    String strPort = scanner.nextLine();
                    if(!NumberUtil.isInteger(strPort)) {
                        System.err.println("只能是数字");
                        continue;
                    }
                    else {
                        p = Convert.toInt(strPort);
                        scanner.close();
                        break;
                    }
                }
                return p;
        });
        try{
            port=future.get(5,TimeUnit.SECONDS);
        }
        catch (InterruptedException | ExecutionException | TimeoutException e){
            port = defaultPort;
        }        	
        }
        
        if(!NetUtil.isUsableLocalPort(port)) {
            System.err.printf("端口%d被占用了，无法启动%n", port );
            System.exit(1);
        }
        new SpringApplicationBuilder(IndexCodesApplication.class).properties("server.port=" + port).run(args);
    	
    }

}