nacos 启动问题（版本2.2.1）

nacos版本：2.2.1
启动命令
·Linux/Unix/Mac
启动命令(standalone代表着单机模式运行，非集群模式):
sh startup.sh -m standalone
如果您使用的是ubuntu系统，或者运行脚本报错提示[[符号找不到，可尝试如下运行：
bash startup.sh -m standalone
·Windows
启动命令(standalone代表着单机模式运行，非集群模式):
startup.cmd -m standalone
nacos2.2.1 启动报错
ERROR Startup errors :
org.springframework.context.ApplicationContextException: Unable to start web server; nested exception is org.springframework.boot.web.server.WebServerException: Unable to start embedded Tomcat
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.onRefresh(ServletWebServerApplicationContext.java:163)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:577)
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:145)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:745)
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:423)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:307)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1317)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1306)
at com.alibaba.nacos.Nacos.main(Nacos.java:35)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:49)
at org.springframework.boot.loader.Launcher.launch(Launcher.java:108)
at org.springframework.boot.loader.Launcher.launch(Launcher.java:58)
at org.springframework.boot.loader.PropertiesLauncher.main(PropertiesLauncher.java:467)

---

解决方案：
在Java中执行以下代码：

import javax.crypto.KeyGenerator;
import javax.crypto.SecretKey;
import java.security.NoSuchAlgorithmException;
import java.util.Base64;
 
public class SecretKeyGenerator {
 
    public static SecretKey generate() {
        try {
            // 使用AES算法生成256位的SecretKey
            KeyGenerator keyGenerator = KeyGenerator.getInstance("AES");
            keyGenerator.init(256);
            return keyGenerator.generateKey();
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
            return null;
        }
    }
 
    public static void main(String[] args) {
        SecretKey secretKey = generate();
        System.out.println(Base64.getEncoder().encodeToString(secretKey.getEncoded()));
    }
}

将代码运行获得的结果赋值给nacos路径下的nacos/conf/application.properties文件里面的nacos.core.auth.plugin.nacos.token.secret.key。
重新启动nacos，访问路径：http://localhost:8848/nacos/index.html#/login
账号密码都是默认nacos，进入查看服务。