refactor: 优化 JWT 解析和验证代码和修复用户名密码错误的异常提示

src/main/java/com/youlai/system/SystemApplication.java

@@ -2,8 +2,10 @@ package com.youlai.system;
 
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.boot.context.properties.ConfigurationPropertiesScan;
 
 @SpringBootApplication
+@ConfigurationPropertiesScan
 public class SystemApplication {
     public static void main(String[] args) {
         SpringApplication.run(SystemApplication.class, args);