egg.js post数据过大时报错的处理，报出413：Payload Too Large，设置bodyparser

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可以通过配置来设置大小，修改配置文件：

  exports.bodyParser = {
    jsonLimit: '5mb',
    formLimit: '6mb',
  };
默认配置：

/**
   * The option of `bodyParser` middleware
   *
   * @member Config#bodyParser
   * @property {Boolean} enable - enable bodyParser or not, default is true
   * @property {String | RegExp | Function | Array} ignore - won't parse request body when url path hit ignore pattern, can not set `ignore` when `match` presented
   * @property {String | RegExp | Function | Array} match - will parse request body only when url path hit match pattern
   * @property {String} encoding - body's encoding type，default is utf8
   * @property {String} formLimit - limit of the urlencoded body. If the body ends up being larger than this limit, a 413 error code is returned. Default is 100kb
   * @property {String} jsonLimit - limit of the json body, default is 100kb
   * @property {Boolean} strict - when set to true, JSON parser will only accept arrays and objects. Default is true
   * @property {Number} queryString.arrayLimit - urlencoded body array's max length, default is 100
   * @property {Number} queryString.depth - urlencoded body object's max depth, default is 5
   * @property {Number} queryString.parameterLimit - urlencoded body maximum parameters, default is 1000
   */
  config.bodyParser = {
    enable: true,
    encoding: 'utf8',
    formLimit: '100kb',
    jsonLimit: '100kb',
    strict: true,
    // @see https://github.com/hapijs/qs/blob/master/lib/parse.js#L8 for more options
    queryString: {
      arrayLimit: 100,
      depth: 5,
      parameterLimit: 1000,
    },
  };
可以查找 egg.js 文档中的 

config.bodyParser
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原文链接：https://blog.csdn.net/bigsea622/article/details/86287548