SpringCloud统一配置之使用配置

1. 配置的读取方式在上一篇文章中有提到。
2. 取到值之后赋值给静态类里的静态变量。
3. 因为SpringCloud项目启动的时候会把所有的api都执行一遍(相当蛋疼)，所以这里直接就可以写一个方法进行赋值。

代码如下：

入口类：

package com.shinho;

import java.util.Map;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;

import com.alibaba.fastjson.JSON;
import com.shinho.log.ShinhoLog;

@Configuration
@EnableAutoConfiguration
@ComponentScan(basePackages={"com.shinho"})
@EnableWebMvc
@EnableEurekaClient
@RestController
public class KylintestApplication {

    @Value("${foo}")
    String foo;
    
    private static final Logger logger = LoggerFactory.getLogger(KylintestApplication.class);
    
    public static void main(String[] args) {
        SpringApplication.run(KylintestApplication.class, args);
    }
    
    @RequestMapping("/log")
    @Bean
    public String Log() {
        logger.info("init:log");
        ShinhoLog.foo = this.foo;
        String json = "log";
        return json;
    }
    
    @RequestMapping("/hi")
    @Bean
    public String home() {
        String json = "123:"+ShinhoLog.info();
        return json;
    }
}

静态类：

package com.shinho.log;

import java.io.File;

import org.apache.commons.io.FileUtils;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.stereotype.Component;

@Component
public class ShinhoLog {
    
    public static String foo;
    
    public static String info(){
        return foo;
    }
    
}

启动之后立即访问 http://localhost:XXXX/hi 这是会返回123:foo version 2， 完美！