从java8升级java17的一些调整总结

"""
{"code":200,"msg":"成功","data":{"total":0,"data":[]}}
"""

String day = switch (dayOfWeek) {
    case MONDAY, TUESDAY -> "工作日";
    case SATURDAY, SUNDAY -> "周末";
    default -> throw new IllegalStateException("未知日期");
};

if (obj instanceof String) {
    String s = (String) obj;
    System.out.println(s.toUpperCase());
}

if (obj instanceof String s) {
    System.out.println(s.toUpperCase()); // s 已经自动转换为 String 类型
}

record Point(int x, int y) {}

javax.persistence.*   -> jakarta.persistence.*
javax.validation.*    -> jakarta.validation.*
javax.servlet.*       -> jakarta.servlet.*
javax.annotation.*    -> jakarta.annotation.*
javax.transaction.*   -> jakarta.transaction.*

spring.datasource.url=jdbc:mysql://localhost:3306/db?useSSL=false&serverTimezone=UTC

<dependency>
    <groupId>io.jsonwebtoken</groupId>
    <artifactId>jjwt-api</artifactId>
    <version>1.0.0</version>
</dependency>
<dependency>
    <groupId>io.jsonwebtoken</groupId>
    <artifactId>jjwt-impl</artifactId>
    <version>1.0.0</version>
    <scope>runtime</scope>
</dependency>
<dependency>
    <groupId>io.jsonwebtoken</groupId>
    <artifactId>jjwt-jackson</artifactId>
    <version>1.0.0</version>
    <scope>runtime</scope>
</dependency>

Jws<Claims> jws = Jwts.parser()
    .verifyWith(secretKey)
    .build()
    .parseSignedClaims(token);