Question

我正在保存包含原始数据（缓冲区）的.tmp文件

[{"start_bin_value":"000180000","end_bin_value":"000180999","card_length":"16","card_brand":"006","service_type":"002","card_organization":"003","cdv_validation":"1","issuer_region":"1","bin_country":"840","issuer_bin":"400087","cft_flag":"000","mt_flag":"001","funding_source":"D","restricted_use":"A"},{"start_bin_value":"021502670","end_bin_value":"021502909","card_length":"19","card_brand":"006","service_type":"002","card_organization":"003","cdv_validation":"0","issuer_region":"1","bin_country":"840","issuer_bin":"400087","cft_flag":"000","mt_flag":"001","funding_source":"D","restricted_use":"A"},{"start_bin_value":"221572830","end_bin_value":"221572839","card_length":"16","card_brand":"006","service_type":"002","card_organization":"003","cdv_validation":"0","issuer_region":"1","bin_country":"840","issuer_bin":"400087","cft_flag":"000","mt_flag":"000","funding_source":"D","restricted_use":"A"},{"start_bin_value":"308952000","end_bin_value":"308969999","card_length":"19","card_brand":"006","service_type":"002","card_organization":"003","cdv_validation":"0","issuer_region":"1","bin_country":"840","issuer_bin":"400087","cft_flag":"000","mt_flag":"001","funding_source":"D","restricted_use":"A"}]

现在，我想检查（每次读取这些文件）内容/原始数据是否已损坏/损坏，并且我能够以某种方式对其进行解析

我该怎么做？

谢谢。

Answer 1

您没有指定损坏/损坏的含义，但是如果您只想检查是否可以解析它，只需使用fs.readFileSync并使用{{ 3}}围绕try...catch：

/*

In Node.js you would do:

const fs = require('fs');
const rawData = fs.readFileSync("path/to/data.json");

*/

let rawData = `
[{"start_bin_value":"000180000","end_bin_value":"000180999","card_length":"16","card_brand":"006","service_type":"002","card_organization":"003","cdv_validation":"1","issuer_region":"1","bin_country":"840","issuer_bin":"400087","cft_flag":"000","mt_flag":"001","funding_source":"D","restricted_use":"A"},{"start_bin_value":"021502670","end_bin_value":"021502909","card_length":"19","card_brand":"006","service_type":"002","card_organization":"003","cdv_validation":"0","issuer_region":"1","bin_country":"840","issuer_bin":"400087","cft_flag":"000","mt_flag":"001","funding_source":"D","restricted_use":"A"},{"start_bin_value":"221572830","end_bin_value":"221572839","card_length":"16","card_brand":"006","service_type":"002","card_organization":"003","cdv_validation":"0","issuer_region":"1","bin_country":"840","issuer_bin":"400087","cft_flag":"000","mt_flag":"000","funding_source":"D","restricted_use":"A"},{"start_bin_value":"308952000","end_bin_value":"308969999","card_length":"19","card_brand":"006","service_type":"002","card_organization":"003","cdv_validation":"0","issuer_region":"1","bin_country":"840","issuer_bin":"400087","cft_flag":"000","mt_flag":"001","funding_source":"D","restricted_use":"A"}]
`;

try {
  const data = JSON.parse(rawData);
  
  console.log('Data parsed OK!');
} catch(err) {
  console.error('Data could not be parsed!');
  console.error(err);
}

// Corrupt it so that it's no longer valid JSON:
rawData = rawData.slice(0, -10);

try {
  const data = JSON.parse(rawData);
  
  console.log('Data parsed OK!');
} catch(err) {
  console.error('Data could not be parsed!');
  console.error(err);
}

检查原始数据是否已损坏

1 个答案: