search

Home  >  Q&A  >  body text

node.js - res.send和res.json有什么区别?

除了res.json里面的值必须是json外,还有什么区别呢?

大家讲道理大家讲道理2864 days ago604

reply all(1)I'll reply

  • 伊谢尔伦

    伊谢尔伦2017-04-17 16:32:36

    Difference between res.send and res.json in Express.js Moving an answer on stackoverflow

    The following is the translated answer with high votes:

    When passing objects or arrays, these two methods are the same, but res.json() will also convert non-objects, such as null and undefined< /code>, these are invalid JSON. res.json()也会转换非对象,如nullundefined,这些无效的JSON。

    该方法还使用json replaceacerjson spaces的设置,因此您可以使用更多选项格式化JSON。 例如:

    app.set('json spaces', 2);
    app.set('json replacer', replacer);

    传递给JSON.stringify()类似:

    JSON.stringify(value, replacer, spacing);
    // value: 需要格式化的对象
    // replacer: stringify 时如何转化属性的规则
    // spacing: 锁紧的空格数量

    res.json方法的中res.send部分没有的代码:

    var app = this.app;
    var replacer = app.get('json replacer');
    var spaces = app.get('json spaces');
    var body = JSON.stringify(obj, replacer, spaces);

    最终它使用res.send

    This method also uses the settings of json replaceacer and json spaces so you can format JSON with more options. For example: 🎜
    this.charset = this.charset || 'utf-8';
    this.get('Content-Type') || this.set('Content-Type', 'application/json');
    
    return this.send(body);
    🎜 Passed to JSON.stringify() is similar to: 🎜 rrreee 🎜 Code that is not included in the res.send part of the res.json method: 🎜 rrreee 🎜Finally it uses res.send to send the request🎜 rrreee

    reply
    0
  • Cancelreply