{"id":677,"date":"2023-02-26T14:36:05","date_gmt":"2023-02-26T06:36:05","guid":{"rendered":"https:\/\/www.appblog.cn\/?p=677"},"modified":"2023-04-29T18:41:00","modified_gmt":"2023-04-29T10:41:00","slug":"instructions-for-using-json-web-token-jwt","status":"publish","type":"post","link":"https:\/\/www.appblog.cn\/index.php\/2023\/02\/26\/instructions-for-using-json-web-token-jwt\/","title":{"rendered":"JSON Web Token\uff08JWT\uff09\u4f7f\u7528\u6b65\u9aa4\u8bf4\u660e"},"content":{"rendered":"

Github: https:\/\/github.com\/auth0\/java-jwt<\/a><\/p>\n

Gradle\u4e0b\u4f9d\u8d56\uff1a<\/p>\n

compile 'com.auth0:java-jwt:3.10.2'<\/code><\/pre>\n
<\/p>\n
\u793a\u4f8b\u4ecb\u7ecd\uff1a<\/p>\n
import java.util.Calendar;\nimport java.util.Date;\nimport java.util.HashMap;\nimport java.util.Map;\n\nimport com.alibaba.druid.util.StringUtils;\nimport com.auth0.jwt.JWT;\nimport com.auth0.jwt.JWTVerifier;\nimport com.auth0.jwt.algorithms.Algorithm;\nimport com.auth0.jwt.interfaces.Claim;\nimport com.auth0.jwt.interfaces.DecodedJWT;\n\npublic class Test {\n\n    \/**\n     * APP\u767b\u5f55Token\u7684\u751f\u6210\u548c\u89e3\u6790 \n     *\/\n    \/** token\u79d8\u94a5\uff0c\u8bf7\u52ff\u6cc4\u9732\uff0c\u8bf7\u52ff\u968f\u4fbf\u4fee\u6539 backups:JKKLJOoasdlfj *\/\n    public static final String SECRET = "JKKLJOoasdlfj";\n    \/** token \u8fc7\u671f\u65f6\u95f4: 10\u5929 *\/\n    public static final int calendarField = Calendar.DATE;\n    public static final int calendarInterval = 10;\n\n    \/**\n     * JWT\u751f\u6210Token.<br\/>\n     * \n     * JWT\u6784\u6210: header, payload, signature\n     * \n     * @param user_id \u767b\u5f55\u6210\u529f\u540e\u7528\u6237user_id, \u53c2\u6570user_id\u4e0d\u53ef\u4f20\u7a7a\n     *\/\n    public static String createToken(Long user_id) throws Exception {\n        Date iatDate = new Date();\n        \/\/ expire time\n        Calendar nowTime = Calendar.getInstance();\n        nowTime.add(calendarField, calendarInterval);\n        Date expiresDate = nowTime.getTime();\n\n        \/\/ header Map\n        Map<String, Object> map = new HashMap<>();\n        map.put("alg", "HS256");\n        map.put("typ", "JWT");\n\n        \/\/ build token\n        \/\/ param backups {iss:Service, aud:APP}\n        String token = JWT.create().withHeader(map) \/\/ header\n                .withClaim("iss", "Service") \/\/ payload\n                .withClaim("aud", "APP").withClaim("user_id", null == user_id ? null : user_id.toString())\n                .withIssuedAt(iatDate) \/\/ sign time\n                .withExpiresAt(expiresDate) \/\/ expire time\n                .sign(Algorithm.HMAC256(SECRET)); \/\/ signature\n\n        return token;\n    }\n\n    \/**\n     * \u89e3\u5bc6Token\n     * \n     * @param token\n     * @return\n     * @throws Exception\n     *\/\n    public static Map<String, Claim> verifyToken(String token) {\n        DecodedJWT jwt = null;\n        try {\n            JWTVerifier verifier = JWT.require(Algorithm.HMAC256(SECRET)).build();\n            jwt = verifier.verify(token);\n        } catch (Exception e) {\n            \/\/ e.printStackTrace();\n            \/\/ token \u6821\u9a8c\u5931\u8d25, \u629b\u51faToken\u9a8c\u8bc1\u975e\u6cd5\u5f02\u5e38\n        }\n        return jwt.getClaims();\n    }\n\n    \/**\n     * \u6839\u636eToken\u83b7\u53d6user_id\n     * \n     * @param token\n     * @return user_id\n     *\/\n    public static Long getAppUID(String token) {\n        Map<String, Claim> claims = verifyToken(token);\n        Claim user_id_claim = claims.get("user_id");\n        if (null == user_id_claim || StringUtils.isEmpty(user_id_claim.asString())) {\n            \/\/ token \u6821\u9a8c\u5931\u8d25, \u629b\u51faToken\u9a8c\u8bc1\u975e\u6cd5\u5f02\u5e38\n        }\n        return Long.valueOf(user_id_claim.asString());\n    }\n}<\/code><\/pre>\n
\u6700\u7ec8\u5b58\u653e\u7684\u6570\u636e\u5728JWT\u5185\u90e8\u7684\u5b9e\u4f53claims\u91cc\uff0c\u5b83\u662f\u5b58\u653e\u6570\u636e\u7684\u5730\u65b9\u3002<\/p>\n
\u6982\u5ff5\u4ecb\u7ecd<\/h2>\n
JWT\u6d88\u606f\u6784\u6210<\/h3>\n
\u4e00\u4e2atoken\u52063\u90e8\u5206\uff0c\u6309\u987a\u5e8f\u4e3a<\/p>\n