django的HttpResponse对象

HttpResponse objects

class HttpResponse

相对于django自动创建的HttpRequest对象，HttpResponse对象需要去我们自己创建，每个view都也应该返回一个HttpResponse对象，
HttpResponse class在django.http模块中

用处

1. 传递字符串

   >>> from django.http import HttpResponse
   >>> response = HttpResponse("Here's the text of the Web page.")
   >>> response = HttpResponse("Text only, please.", content_type="text/plain")
   >>>> from django.http import HttpResponse
   >>> response = HttpResponse("Here's the text of the Web page.")
   >>> response = HttpResponse("Text only, please.", content_type="text/plain")
   

   2.传递迭代器

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属性

1.HttpResponse.content：bytestring
2.HttpResponse.charset：字符集
3.HttpResponse.status_code：status_code
4.HttpResponse.reason_phrase：
5.HttpResponse.streaming：总是false
6.HttpResponse.closed：True if the response has been closed.

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方法

1. HttpResponse.init(content=”, content_type=None, status=200, reason=None, charset=None)：
   初始化HttpResponse

   • 参数content：应该是字符串迭代器，如果不是迭代器，将返回字符串，如果都不是的话，将会转成字符串
   • 参数content_type：可选的MIME type
   • 参数status：状态码
   • 参数reason：HTTP response phrase
   • 参数charset：编码字符集

2. HttpResponse.setitem(header, value)：
   设置header和value。字符串

3. HttpResponse.delitem(header)：
   删除指定header
4. HttpResponse.getitem(header)：
   获取指定header
5. HttpResponse.setdefault(header, value)：
   设置指定header，除非已经设置过
6. HttpResponse.set_cookie(key, value=”, max_age=None, expires=None, path=’/’, domain=None, secure=None, httponly=False)：
   设置cookie，参数类似于class http.cookies.Morsel
7. HttpResponse.set_signed_cookie(key, value, salt=”, max_age=None, expires=None, path=’/’, domain=None, secure=None, httponly=True)：类似set_cookie
8. HttpResponse.delete_cookie(key, path=’/’, domain=None)：
9. HttpResponse.write(content)：
10. HttpResponse.flush()：
11. HttpResponse.tell():
12. HttpResponse.getvalue():False,返回流对象
13. HttpResponse.readable():False,返回流对象
14. HttpResponse.seekable():False,返回流对象
15. HttpResponse.writable():True,返回流对象
16. HttpResponse.writelines(lines):字符串列表。,返回流对象

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subclasses

django.http包含许多HttpResponse subclasses，用于处理不同类型的HTTP responses
1. class HttpResponseRedirect：