SpringBoot启动信息打印器

Revizyon ef8e3adbc821ef519a505c3ab21d94dcb819bd58

AdvancedStartupLogger.java · 4.9 KiB · Java Ham

1	package com.example.startup;
2
3	import lombok.extern.slf4j.Slf4j;
4	import org.springframework.boot.web.context.WebServerInitializedEvent;
5	import org.springframework.context.ApplicationListener;
6	import org.springframework.core.env.Environment;
7	import org.springframework.stereotype.Component;
8
9	import java.lang.management.ManagementFactory;
10	import java.net.DatagramSocket;
11	import java.net.Inet4Address;
12	import java.net.InetAddress;
13	import java.net.NetworkInterface;
14	import java.time.Duration;
15	import java.time.Instant;
16	import java.util.ArrayList;
17	import java.util.Arrays;
18	import java.util.Enumeration;
19	import java.util.List;
20
21	@Slf4j
22	@Component
23	public class AdvancedStartupLogger implements ApplicationListener<WebServerInitializedEvent> {
24
25	private final Environment env;
26	private static final Instant START_TIME = Instant.now();
27
28	public AdvancedStartupLogger(Environment env) {
29	this.env = env;
30	}
31
32	@Override
33	public void onApplicationEvent(WebServerInitializedEvent event) {
34
35	int port = event.getWebServer().getPort();
36	String protocol = resolveProtocol();
37	String contextPath = resolveContextPath();
38	String appName = env.getProperty("spring.application.name", "application");
39	String profiles = Arrays.toString(env.getActiveProfiles());
40	String pid = getPid();
41	String javaVersion = System.getProperty("java.version");
42	String outboundIp = getOutboundIp();
43	boolean docker = isDocker();
44	boolean k8s = isK8s();
45
46	long startupMs = Duration.between(START_TIME, Instant.now()).toMillis();
47
48	List<String> allIps = getAllNetworkIps();
49	long maxHeapMb = Runtime.getRuntime().maxMemory() / 1024 / 1024;
50
51	String actuatorPath = env.getProperty("management.endpoints.web.base-path", "actuator");
52
53	log.info("\n" +
54	"================= 🚀 SERVICE STARTED =================\n" +
55	"App Name : {}\n" +
56	"PID : {}\n" +
57	"Profiles : {}\n" +
58	"Java Version : {}\n" +
59	"Startup Time : {} ms\n" +
60	"Max Heap : {} MB\n\n" +
61	"Access URLs:\n" +
62	"Local : {}://localhost:{}{}\n" +
63	"External : {}://{}:{}{}\n" +
64	"Actuator : {}://{}:{}{}{}\n\n" +
65	"All Network IPs : {}\n" +
66	"Docker : {}\n" +
67	"Kubernetes : {}\n" +
68	"=======================================================",
69	appName,
70	pid,
71	profiles,
72	javaVersion,
73	startupMs,
74	maxHeapMb,
75	protocol,
76	port,
77	contextPath,
78	protocol,
79	outboundIp,
80	port,
81	contextPath,
82	protocol,
83	outboundIp,
84	port,
85	contextPath,
86	actuatorPath,
87	allIps,
88	docker,
89	k8s
90	);
91
92	logStructuredJson(appName, port, outboundIp, startupMs);
93	}
94
95	private String resolveProtocol() {
96	return env.getProperty("server.ssl.key-store") != null ? "https" : "http";
97	}
98
99	private String resolveContextPath() {
100	return env.getProperty("server.servlet.context-path", "");
101	}
102
103	private String getPid() {
104	return ManagementFactory.getRuntimeMXBean().getName().split("@")[0];
105	}
106
107	private boolean isDocker() {
108	return new java.io.File("/.dockerenv").exists();
109	}
110
111	private boolean isK8s() {
112	return System.getenv("KUBERNETES_SERVICE_HOST") != null;
113	}
114
115	private String getOutboundIp() {
116	try (DatagramSocket socket = new DatagramSocket()) {
117	socket.connect(InetAddress.getByName("8.8.8.8"), 10002);
118	return socket.getLocalAddress().getHostAddress();
119	} catch (Exception e) {
120	return "Unknown";
121	}
122	}
123
124	private List<String> getAllNetworkIps() {
125	List<String> ips = new ArrayList<>();
126	try {
127	Enumeration<NetworkInterface> interfaces = NetworkInterface.getNetworkInterfaces();
128	while (interfaces.hasMoreElements()) {
129	NetworkInterface ni = interfaces.nextElement();
130	if (!ni.isUp() \|\| ni.isLoopback()) continue;
131
132	Enumeration<InetAddress> addresses = ni.getInetAddresses();
133	while (addresses.hasMoreElements()) {
134	InetAddress addr = addresses.nextElement();
135	if (addr instanceof Inet4Address) {
136	ips.add(addr.getHostAddress());
137	}
138	}
139	}
140	} catch (Exception ignored) {
141	}
142	return ips;
143	}
144
145	private void logStructuredJson(String appName, int port, String ip, long startupMs) {
146	log.info("STARTUP_JSON: {{\"app\":\"{}\",\"port\":{},\"ip\":\"{}\",\"startupMs\":{}}}",
147	appName, port, ip, startupMs);
148	}
149	}
150