Java基础——HttpStatus.class 源码中状态码总结

标签：Java 请求 Series HttpStatus CLIENT ERROR 服务器源码

HttpStatus.class 源码中状态码总结

HttpStatus.class 源码

//
// Source code recreated from a .class file by IntelliJ IDEA
// (powered by FernFlower decompiler)
//

package org.springframework.http;

import org.springframework.lang.Nullable;

public enum HttpStatus implements HttpStatusCode {
    CONTINUE(100, HttpStatus.Series.INFORMATIONAL, "Continue"),
    SWITCHING_PROTOCOLS(101, HttpStatus.Series.INFORMATIONAL, "Switching Protocols"),
    PROCESSING(102, HttpStatus.Series.INFORMATIONAL, "Processing"),
    EARLY_HINTS(103, HttpStatus.Series.INFORMATIONAL, "Early Hints"),
    /** @deprecated */
    @Deprecated(
        since = "6.0.5"
    )
    CHECKPOINT(103, HttpStatus.Series.INFORMATIONAL, "Checkpoint"),
    OK(200, HttpStatus.Series.SUCCESSFUL, "OK"),
    CREATED(201, HttpStatus.Series.SUCCESSFUL, "Created"),
    ACCEPTED(202, HttpStatus.Series.SUCCESSFUL, "Accepted"),
    NON_AUTHORITATIVE_INFORMATION(203, HttpStatus.Series.SUCCESSFUL, "Non-Authoritative Information"),
    NO_CONTENT(204, HttpStatus.Series.SUCCESSFUL, "No Content"),
    RESET_CONTENT(205, HttpStatus.Series.SUCCESSFUL, "Reset Content"),
    PARTIAL_CONTENT(206, HttpStatus.Series.SUCCESSFUL, "Partial Content"),
    MULTI_STATUS(207, HttpStatus.Series.SUCCESSFUL, "Multi-Status"),
    ALREADY_REPORTED(208, HttpStatus.Series.SUCCESSFUL, "Already Reported"),
    IM_USED(226, HttpStatus.Series.SUCCESSFUL, "IM Used"),
    MULTIPLE_CHOICES(300, HttpStatus.Series.REDIRECTION, "Multiple Choices"),
    MOVED_PERMANENTLY(301, HttpStatus.Series.REDIRECTION, "Moved Permanently"),
    FOUND(302, HttpStatus.Series.REDIRECTION, "Found"),
    /** @deprecated */
    @Deprecated
    MOVED_TEMPORARILY(302, HttpStatus.Series.REDIRECTION, "Moved Temporarily"),
    SEE_OTHER(303, HttpStatus.Series.REDIRECTION, "See Other"),
    NOT_MODIFIED(304, HttpStatus.Series.REDIRECTION, "Not Modified"),
    /** @deprecated */
    @Deprecated
    USE_PROXY(305, HttpStatus.Series.REDIRECTION, "Use Proxy"),
    TEMPORARY_REDIRECT(307, HttpStatus.Series.REDIRECTION, "Temporary Redirect"),
    PERMANENT_REDIRECT(308, HttpStatus.Series.REDIRECTION, "Permanent Redirect"),
    BAD_REQUEST(400, HttpStatus.Series.CLIENT_ERROR, "Bad Request"),
    UNAUTHORIZED(401, HttpStatus.Series.CLIENT_ERROR, "Unauthorized"),
    PAYMENT_REQUIRED(402, HttpStatus.Series.CLIENT_ERROR, "Payment Required"),
    FORBIDDEN(403, HttpStatus.Series.CLIENT_ERROR, "Forbidden"),
    NOT_FOUND(404, HttpStatus.Series.CLIENT_ERROR, "Not Found"),
    METHOD_NOT_ALLOWED(405, HttpStatus.Series.CLIENT_ERROR, "Method Not Allowed"),
    NOT_ACCEPTABLE(406, HttpStatus.Series.CLIENT_ERROR, "Not Acceptable"),
    PROXY_AUTHENTICATION_REQUIRED(407, HttpStatus.Series.CLIENT_ERROR, "Proxy Authentication Required"),
    REQUEST_TIMEOUT(408, HttpStatus.Series.CLIENT_ERROR, "Request Timeout"),
    CONFLICT(409, HttpStatus.Series.CLIENT_ERROR, "Conflict"),
    GONE(410, HttpStatus.Series.CLIENT_ERROR, "Gone"),
    LENGTH_REQUIRED(411, HttpStatus.Series.CLIENT_ERROR, "Length Required"),
    PRECONDITION_FAILED(412, HttpStatus.Series.CLIENT_ERROR, "Precondition Failed"),
    PAYLOAD_TOO_LARGE(413, HttpStatus.Series.CLIENT_ERROR, "Payload Too Large"),
    /** @deprecated */
    @Deprecated
    REQUEST_ENTITY_TOO_LARGE(413, HttpStatus.Series.CLIENT_ERROR, "Request Entity Too Large"),
    URI_TOO_LONG(414, HttpStatus.Series.CLIENT_ERROR, "URI Too Long"),
    /** @deprecated */
    @Deprecated
    REQUEST_URI_TOO_LONG(414, HttpStatus.Series.CLIENT_ERROR, "Request-URI Too Long"),
    UNSUPPORTED_MEDIA_TYPE(415, HttpStatus.Series.CLIENT_ERROR, "Unsupported Media Type"),
    REQUESTED_RANGE_NOT_SATISFIABLE(416, HttpStatus.Series.CLIENT_ERROR, "Requested range not satisfiable"),
    EXPECTATION_FAILED(417, HttpStatus.Series.CLIENT_ERROR, "Expectation Failed"),
    I_AM_A_TEAPOT(418, HttpStatus.Series.CLIENT_ERROR, "I'm a teapot"),
    /** @deprecated */
    @Deprecated
    INSUFFICIENT_SPACE_ON_RESOURCE(419, HttpStatus.Series.CLIENT_ERROR, "Insufficient Space On Resource"),
    /** @deprecated */
    @Deprecated
    METHOD_FAILURE(420, HttpStatus.Series.CLIENT_ERROR, "Method Failure"),
    /** @deprecated */
    @Deprecated
    DESTINATION_LOCKED(421, HttpStatus.Series.CLIENT_ERROR, "Destination Locked"),
    UNPROCESSABLE_ENTITY(422, HttpStatus.Series.CLIENT_ERROR, "Unprocessable Entity"),
    LOCKED(423, HttpStatus.Series.CLIENT_ERROR, "Locked"),
    FAILED_DEPENDENCY(424, HttpStatus.Series.CLIENT_ERROR, "Failed Dependency"),
    TOO_EARLY(425, HttpStatus.Series.CLIENT_ERROR, "Too Early"),
    UPGRADE_REQUIRED(426, HttpStatus.Series.CLIENT_ERROR, "Upgrade Required"),
    PRECONDITION_REQUIRED(428, HttpStatus.Series.CLIENT_ERROR, "Precondition Required"),
    TOO_MANY_REQUESTS(429, HttpStatus.Series.CLIENT_ERROR, "Too Many Requests"),
    REQUEST_HEADER_FIELDS_TOO_LARGE(431, HttpStatus.Series.CLIENT_ERROR, "Request Header Fields Too Large"),
    UNAVAILABLE_FOR_LEGAL_REASONS(451, HttpStatus.Series.CLIENT_ERROR, "Unavailable For Legal Reasons"),
    INTERNAL_SERVER_ERROR(500, HttpStatus.Series.SERVER_ERROR, "Internal Server Error"),
    NOT_IMPLEMENTED(501, HttpStatus.Series.SERVER_ERROR, "Not Implemented"),
    BAD_GATEWAY(502, HttpStatus.Series.SERVER_ERROR, "Bad Gateway"),
    SERVICE_UNAVAILABLE(503, HttpStatus.Series.SERVER_ERROR, "Service Unavailable"),
    GATEWAY_TIMEOUT(504, HttpStatus.Series.SERVER_ERROR, "Gateway Timeout"),
    HTTP_VERSION_NOT_SUPPORTED(505, HttpStatus.Series.SERVER_ERROR, "HTTP Version not supported"),
    VARIANT_ALSO_NEGOTIATES(506, HttpStatus.Series.SERVER_ERROR, "Variant Also Negotiates"),
    INSUFFICIENT_STORAGE(507, HttpStatus.Series.SERVER_ERROR, "Insufficient Storage"),
    LOOP_DETECTED(508, HttpStatus.Series.SERVER_ERROR, "Loop Detected"),
    BANDWIDTH_LIMIT_EXCEEDED(509, HttpStatus.Series.SERVER_ERROR, "Bandwidth Limit Exceeded"),
    NOT_EXTENDED(510, HttpStatus.Series.SERVER_ERROR, "Not Extended"),
    NETWORK_AUTHENTICATION_REQUIRED(511, HttpStatus.Series.SERVER_ERROR, "Network Authentication Required");

    private static final HttpStatus[] VALUES = values();
    private final int value;
    private final Series series;
    private final String reasonPhrase;

    private HttpStatus(int value, Series series, String reasonPhrase) {
        this.value = value;
        this.series = series;
        this.reasonPhrase = reasonPhrase;
    }

    public int value() {
        return this.value;
    }

    public Series series() {
        return this.series;
    }

    public String getReasonPhrase() {
        return this.reasonPhrase;
    }

    public boolean is1xxInformational() {
        return this.series() == HttpStatus.Series.INFORMATIONAL;
    }

    public boolean is2xxSuccessful() {
        return this.series() == HttpStatus.Series.SUCCESSFUL;
    }

    public boolean is3xxRedirection() {
        return this.series() == HttpStatus.Series.REDIRECTION;
    }

    public boolean is4xxClientError() {
        return this.series() == HttpStatus.Series.CLIENT_ERROR;
    }

    public boolean is5xxServerError() {
        return this.series() == HttpStatus.Series.SERVER_ERROR;
    }

    public boolean isError() {
        return this.is4xxClientError() || this.is5xxServerError();
    }

    public String toString() {
        int var10000 = this.value;
        return "" + var10000 + " " + this.name();
    }

    public static HttpStatus valueOf(int statusCode) {
        HttpStatus status = resolve(statusCode);
        if (status == null) {
            throw new IllegalArgumentException("No matching constant for [" + statusCode + "]");
        } else {
            return status;
        }
    }

    @Nullable
    public static HttpStatus resolve(int statusCode) {
        HttpStatus[] var1 = VALUES;
        int var2 = var1.length;

        for(int var3 = 0; var3 < var2; ++var3) {
            HttpStatus status = var1[var3];
            if (status.value == statusCode) {
                return status;
            }
        }

        return null;
    }

    public static enum Series {
        INFORMATIONAL(1),
        SUCCESSFUL(2),
        REDIRECTION(3),
        CLIENT_ERROR(4),
        SERVER_ERROR(5);

        private final int value;

        private Series(int value) {
            this.value = value;
        }

        public int value() {
            return this.value;
        }

        /** @deprecated */
        @Deprecated
        public static Series valueOf(HttpStatus status) {
            return status.series;
        }

        public static Series valueOf(int statusCode) {
            Series series = resolve(statusCode);
            if (series == null) {
                throw new IllegalArgumentException("No matching constant for [" + statusCode + "]");
            } else {
                return series;
            }
        }

        @Nullable
        public static Series resolve(int statusCode) {
            int seriesCode = statusCode / 100;
            Series[] var2 = values();
            int var3 = var2.length;

            for(int var4 = 0; var4 < var3; ++var4) {
                Series series = var2[var4];
                if (series.value == seriesCode) {
                    return series;
                }
            }

            return null;
        }
    }
}

上面代码中的HttpStatus枚举类定义了HTTP协议中所有标准状态码，以及它们对应的分类（Series）和描述性短语（reasonPhrase）。这些状态码被用来表示HTTP响应的状态，并被分为五大类：1xx、2xx、3xx、4xx、5xx。以下是对所有状态码的总结与分类说明：

1. 1xx 信息性响应（Informational Responses）

100 CONTINUE: 继续进行请求的一部分，通常是在接收到请求头后。
101 SWITCHING PROTOCOLS: 服务器同意切换协议。
102 PROCESSING: 服务器已接收请求并正在处理。
103 EARLY HINTS: 提供早期的响应提示。

2. 2xx 成功（Successful Responses）

200 OK: 请求成功。
201 CREATED: 请求已成功并且资源已被创建。
202 ACCEPTED: 请求已接受，但尚未处理完成。
203 NON-AUTHORITATIVE INFORMATION: 请求成功，但返回的信息不是来自原始服务器。
204 NO CONTENT: 请求成功，但不返回任何内容。
205 RESET CONTENT: 请求成功，要求客户端重置视图。
206 PARTIAL CONTENT: 成功处理了部分 GET 请求。
207 MULTI-STATUS: 多状态响应。
208 ALREADY REPORTED: DAV 绑定成员已经被列出。
226 IM USED: 服务器已经完成请求，并反映了某些内容的变更。

3. 3xx 重定向（Redirection Responses）

300 MULTIPLE CHOICES: 有多种选择可供选择。
301 MOVED PERMANENTLY: 请求的资源已经永久移动到新位置。
302 FOUND: 请求的资源临时移动到新位置。
303 SEE OTHER: 客户端应当使用另一个 URI 获取资源。
304 NOT MODIFIED: 资源未修改，可继续使用缓存的版本。
305 USE PROXY (已废弃): 请求的资源必须通过代理访问。
307 TEMPORARY REDIRECT: 请求的资源临时移动到新位置，但方法没有改变。
308 PERMANENT REDIRECT: 请求的资源永久移动到新位置，且方法不会改变。

4. 4xx 客户端错误（Client Error Responses）

400 BAD REQUEST: 请求无效，通常是因为请求语法错误。
401 UNAUTHORIZED: 请求需要用户验证。
402 PAYMENT REQUIRED: 保留状态码，通常不使用。
403 FORBIDDEN: 服务器拒绝请求，通常是因为权限不足。
404 NOT FOUND: 请求的资源无法找到。
405 METHOD NOT ALLOWED: 请求的方法不被允许。
406 NOT ACCEPTABLE: 服务器无法生成客户端可接受的内容。
407 PROXY AUTHENTICATION REQUIRED: 需要代理身份验证。
408 REQUEST TIMEOUT: 请求超时，客户端没有在服务器规定的时间内发送请求。
409 CONFLICT: 请求的资源存在冲突。
410 GONE: 请求的资源已经永久删除。
411 LENGTH REQUIRED: 服务器要求请求标明内容长度。
412 PRECONDITION FAILED: 服务器未满足请求中的前提条件。
413 PAYLOAD TOO LARGE: 请求体过大。
414 URI TOO LONG: 请求的 URI 过长。
415 UNSUPPORTED MEDIA TYPE: 请求的媒体格式不支持。
416 REQUESTED RANGE NOT SATISFIABLE: 请求的范围无效。
417 EXPECTATION FAILED: 服务器无法满足请求的预期。
418 I AM A TEAPOT: 玩笑性的状态码，意为服务器是个茶壶，无法煮咖啡。
422 UNPROCESSABLE ENTITY: 请求格式正确，但语义错误。
423 LOCKED: 资源被锁定。
424 FAILED DEPENDENCY: 依赖的请求失败。
425 TOO EARLY: 服务器拒绝处理，因为请求可能重播。
426 UPGRADE REQUIRED: 需要客户端升级协议。
428 PRECONDITION REQUIRED: 要求请求预处理条件。
429 TOO MANY REQUESTS: 客户端发送了过多的请求。
431 REQUEST HEADER FIELDS TOO LARGE: 请求头字段过大。
451 UNAVAILABLE FOR LEGAL REASONS: 因法律原因不可用。

5. 5xx 服务器错误（Server Error Responses）

500 INTERNAL SERVER ERROR: 服务器内部错误。
501 NOT IMPLEMENTED: 服务器不支持请求的方法。
502 BAD GATEWAY: 网关或代理服务器收到无效响应。
503 SERVICE UNAVAILABLE: 服务器当前无法处理请求。
504 GATEWAY TIMEOUT: 网关或代理服务器未能及时从上游服务器获得响应。
505 HTTP VERSION NOT SUPPORTED: 服务器不支持请求的 HTTP 版本。
506 VARIANT ALSO NEGOTIATES: 服务器有内部配置错误。
507 INSUFFICIENT STORAGE: 服务器无法存储请求所需的内容。
508 LOOP DETECTED: 服务器检测到无限循环。
509 BANDWIDTH LIMIT EXCEEDED: 服务器带宽超出限制。
510 NOT EXTENDED: 服务器需要进一步扩展。
511 NETWORK AUTHENTICATION REQUIRED: 需要进行网络身份验证。

总结

1xx 系列表示信息性状态码，用于指示客户端继续请求。
2xx 系列表示成功状态码，表明请求已被成功接收、理解并接受。
3xx 系列表示重定向状态码，要求客户端执行进一步的操作以完成请求。
4xx 系列表示客户端错误，表明请求包含错误或无法完成。
5xx 系列表示服务器错误，表明服务器在尝试处理请求时出错。

这些状态码帮助客户端了解请求的处理状态，并且能够采取相应的动作。

标签：Java,请求,Series,HttpStatus,CLIENT,ERROR,服务器,源码
From： https://blog.csdn.net/qq_42631788/article/details/141331960