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Hutool是一个小而全的Java工具类库,通过静态方法封装,降低相关API的学习成本,提高工作效率,使Java拥有函数式语言般的优雅,让Java语言也可以“甜甜的”。

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package cn.hutool.jwt;

import java.util.Map;

/**
 * JWT头部信息
 *
 * @author looly
 * @since 5.7.0
 */
public class JWTHeader extends Claims {
	private static final long serialVersionUID = 1L;

	//Header names
	/**
	 * 加密算法,通常为HMAC SHA256(HS256)
	 */
	public static String ALGORITHM = "alg";
	/**
	 * 声明类型,一般为jwt
	 */
	public static String TYPE = "typ";
	/**
	 * 内容类型(content type)
	 */
	public static String CONTENT_TYPE = "cty";
	/**
	 * jwk的ID编号
	 */
	public static String KEY_ID = "kid";

	/**
	 * 构造,初始化默认(typ=JWT)
	 */
	public JWTHeader() {}

	/**
	 * 增加“kid”头信息
	 *
	 * @param keyId kid
	 * @return this
	 */
	public JWTHeader setKeyId(String keyId) {
		setClaim(KEY_ID, keyId);
		return this;
	}

	/**
	 * 增加自定义JWT认证头
	 *
	 * @param headerClaims 头信息
	 * @return this
	 */
	public JWTHeader addHeaders(Map headerClaims) {
		putAll(headerClaims);
		return this;
	}
}




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