node-web-mvc/dist/servlets/http/body/RequestBodyReader.js

node spring mvc

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const EntityTooLargeError_1 = __importDefault(require("../../../errors/EntityTooLargeError"));
const MultipartBodyReader_1 = __importDefault(require("./MultipartBodyReader"));
const UrlencodedBodyReader_1 = __importDefault(require("./UrlencodedBodyReader"));
class RequestBodyReader {
    constructor(config) {
        this.config = config;
        this.readers = [
            new MultipartBodyReader_1.default(config),
            new UrlencodedBodyReader_1.default(),
        ];
    }
    read(servletContext) {
        const request = servletContext.request;
        const mediaType = servletContext.request.mediaType;
        const reader = this.readers.find((m) => m.supports(mediaType));
        const length = request.nativeRequest.readableLength;
        if (!reader) {
            return null;
        }
        if (!isNaN(length) && length > Number(this.config.maxRequestSize)) {
            // 如果请求超出限制
            return Promise.reject(new EntityTooLargeError_1.default('request.body', length, this.config.maxRequestSize));
        }
        if (!request.body) {
            // 如果body还没有开始读
            request.body = reader.read(servletContext.request, mediaType);
        }
        return request.body;
    }
}
exports.default = RequestBodyReader;