aspnet responsewrite乱码_responsebody返回json_框架设response乱码(16)

4.The browser returns cookies to the servlet by adding fields to HTTP request headers. Cookies can be retrieved from a request by using the HttpServletRequest#getCookies method. Several cookies might have the same name but different path attributes.

5.Cookies affect the caching of the Web pages that use them. HTTP 1.0 does not cache pages that use cookies created with this class. This class does not support the cache control defined with HTTP 1.1.

The servlet sends cookies to the browser by using the HttpServletResponse#addCookie method, which adds fields to HTTP response headers to send cookies to the browser, one at a time. The browser is expected to support 20 cookies for each Web server, 300 cookies total, and may limit cookie size to 4 KB each.

1.Cookie(java.lang.String name, java.lang.String value)

Constructs a cookie with the specified name and value.创建cookie对象需要指定名称和，The name must conform to RFC 2109. However, vendors may provide a configuration option that allows cookie names conforming to the original Netscape Cookie Specification to be accepted. 其中cookie对象的名称只能使用可打印的ASCII字符，不能包含逗号、空、分高并且不能以$符号开头。

The name of a cookie cannot be changed once the cookie has been created. 在cookie创建后可以改变而名称不可改变。

The value can be anything the server chooses to send. Its value is probably of interest only to the server. The cookie's value can be changed after creation with the setValue method.

By default, cookies are created according to the Netscape cookie specification. The version can be changed with the setVersion method.

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