Springboot 打印所有配置

￡神魔★判官ぃ 2022-11-19 15:58 208阅读 0赞

Springboot 打印所有配置

对接一个第三方应用做调试时，想打印出所有的配置，调试我这边做的配置是否有效，摸索了一番后找到了一个解决方案，废话不多说，直接上代码。

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM0ODc0Nzg0_size_16_color_FFFFFF_t_70][]

package com.marioplus;
    
    import org.springframework.boot.CommandLineRunner;
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.boot.web.servlet.support.SpringBootServletInitializer;
    import org.springframework.core.env.ConfigurableEnvironment;
    import org.springframework.core.env.EnumerablePropertySource;
    import org.springframework.core.env.MutablePropertySources;
    
    import javax.annotation.Resource;
    import java.util.Arrays;
    import java.util.Collections;
    import java.util.Comparator;
    import java.util.Map;
    import java.util.function.Function;
    import java.util.stream.Collectors;
    import java.util.stream.StreamSupport;
    
    @SpringBootApplication
    public class App extends SpringBootServletInitializer implements CommandLineRunner {
    
        @Resource
        private ConfigurableEnvironment springEnv;
    
        public static void main(String[] args) {
            SpringApplication.run(App.class, args);
        }
    
        @Override
        public void run(String... args) throws Exception {
            MutablePropertySources propSrcs = springEnv.getPropertySources();
            // 获取所有配置
            Map<String, String> props = StreamSupport.stream(propSrcs.spliterator(), false)
                    .filter(ps -> ps instanceof EnumerablePropertySource)
                    .map(ps -> ((EnumerablePropertySource) ps).getPropertyNames())
                    .flatMap(Arrays::stream)
                    .distinct()
                    .collect(Collectors.toMap(Function.identity(), springEnv::getProperty));
            
            // key 和 value 之间的最小间隙
            int interval = 20;
            int max = props.keySet().stream()
                    .max(Comparator.comparingInt(String::length))
                    .orElse("")
                    .length();
            
            // 打印
            props.keySet().stream()
                    .sorted()
                    .forEach(k -> {
                        int i = max - k.length() + interval;
                        String join = String.join("", Collections.nCopies(i, " "));
                        System.out.println(String.format("%s%s%s", k, join, props.get(k)));
                    });
        }
    }

欢迎关注我的公众号，和我一起，每天进步一点点

![20210105152837730.png][]

作者：marioplus12  
链接：https://www.jianshu.com/p/3b3f08a6ee30

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM0ODc0Nzg0_size_16_color_FFFFFF_t_70]: /images/20221119/f2e87526538544db893ac5a53e1504a8.png
[20210105152837730.png]: /images/20221119/77543b406f8d414796f84b97e1ac84a3.png