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null
和undefined
,这些无效的JSON。
该方法还使用json replaceacer
和json 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
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