springboot加载yml文件获不到值
今天使用spring boot读取yml文件，这种多层嵌套的竟然无法读取到(value注解spring.redis.pool.max.wait)，即便加上全名也不行，然后网上搜到的内容也未曾满意，很多文章内容都是一样且重复的.最后放弃了查找，突发奇想之下解决了这个问题.
本文旨在如何读取多层嵌套的yml文件，希望能帮到众位.
以下是代码：
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
|
package com.boot.config;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Map;import org.springframework.beans.factory.annotation.Value;import org.springframework.boot.context.properties.ConfigurationProperties;import org.springframework.context.ApplicationEvent;import org.springframework.context.ApplicationListener;import org.springframework.context.annotation.Configuration;import org.springframework.context.annotation.PropertySource;@Configuration@ConfigurationProperties(prefix = "spring.redis;pool.max;pool.min")@PropertySource(value = "classpath:redis.yml")public class RedisConfiguration implements ApplicationListener<ApplicationEvent> { @Value("${host}") private String host; @Value("${port}") private Long port; @Value("${timeout}") private Long timeout; @Value("${database}") private Long database; @Value("${wait}") private Long poolMaxWait; @Value("${idle}") private Long poolMaxIdle; @Value("${idle}") private Long poolMinIdle; @Value("${active}") private Long poolMaxActive; public void onApplicationEvent(ApplicationEvent event) { // 打印属性 System.out.println("============= redisConnect ================"); System.out.println(this.toString()); } @Override public String toString() { return "RedisConfiguration [host=" + host + ", port=" + port + ", timeout=" + timeout + ", database=" + database + ", poolMaxWait=" + poolMaxWait + ", poolMaxIdle=" + poolMaxIdle + ", poolMinIdle=" + poolMinIdle + ", poolMaxActive=" + poolMaxActive + "]"; }} |
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
|
#多层配置spring: redis: database: 0 host: localhost port: 6379 timeout: 0 pool: max: active: 8 wait: -1 idle: 8 min: idle: 0 |
日志打印如下所示：
============= redisConnect ================
RedisConfiguration [host=localhost, port=6379, timeout=0, database=0, poolMaxWait=-1, poolMaxIdle=0, poolMinIdle=0, poolMaxActive=8]
获取不到yml配置文件指定的值
|
1
2
3
4
5
6
7
8
9
10
11
|
import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;@SpringBootApplicationpublic class App { public static void main(String[] args) { SpringApplication app = new SpringApplication(App.class); ConfigurableApplicationContext context = app.run(args); System.out.println(context.getEnvironment().getProperty("jdbc.pwd")); context.close(); }} |
apllication.yml 放置在classpath路径下
|
1
2
|
jdbc: pwd: 123456 #冒号和数字之间有一个空格，没有否则获取失败，pwd前面有缩进两个字符 |
ps：版本spring-4.3.2-release,springboot-1.4
以上为个人经验，希望能给大家一个参考，也希望大家多多支持服务器之家。
原文链接：https://my.oschina.net/u/2486137/blog/1512294
