Golang's Net/url Bag

This is a creation in Article, where the information may have evolved or changed.

Package URL

Import "Net/url"

The URL package resolves the URL and implements the query's escape code, see RFC 3986.

Index

• Func Queryescape (s string) string
• Func Queryunescape (S string) (string, error)
• Type Error
• Func (e *error) Error () string
• Type Escapeerror
• Func (e escapeerror) Error () string
• Type URL
• Func Parse (Rawurl string) (URL *url, err error)
• Func Parserequesturi (Rawurl string) (URL *url, err error)
• Func (U *url) isabs () bool
• Func (U *url) Query () Values
• Func (U *url) requesturi () string
• Func (U *url) string () string
• Func (U *url) Parse (ref string) (*url, error)
• Func (U *url) resolvereference (ref *url) *url
• Type Userinfo
• Func User (username string) *userinfo
• Func userpassword (username, password string) *userinfo
• Func (U *userinfo) Username () string
• Func (U *userinfo) Password () (string, BOOL)
• Func (U *userinfo) string () string
• Type Values
• Func parsequery (query string) (M Values, err Error)
• Func (v Values) Get (key String) string
• Func (v Values) Set (key, value string)
• Func (v Values) ADD (key, value string)
• Func (v Values) Del (key string)
• Func (v Values) Encode () string

Examples

• Url
• Values

Package Files

Url.go

Func Queryescape

Func Queryescape (s string) string

The queryescape function transcode s to make it safe to use in URL queries.

Func Queryunescape

Func Queryunescape (S string) (string, error)

The queryunescape function is used to restore a string of Queryescape transcoding. It will change the %ab to byte 0xABand change ' + ' to '. If there is a % followed by two hexadecimal digits, this function returns an error.

Type Error

Op URL ERR Error}

error reports a bug and the URL and action that caused the error to occur.

Func (*error) Error

Func (e *error) Error () string

Type Escapeerror

Type Escapeerror string

Func (Escapeerror) Error

Func (e escapeerror) Error () string

Type URL

Scheme Opaque //Opaque data after encoding User //user name and password information Host  host or host:port  Path Rawquery //Coded query string, no '? '  Fragment //referenced fragment (document location), no ' # '  }

The URL type represents a parsed URL(or, a URL reference). The URL basic format is as follows:

scheme://[userinfo@]host/path[?query][#fragment]

URLs that are not colon-and-double-slash after scheme are interpreted as the following format:

scheme:opaque[?query][#fragment]

Note that the path field is saved in a decoded format, such as /%47%6f%2f becomes /go/. This causes us to be unable to determine whether the slash in the Path field is from the original URL or the %2fbefore decoding. This difference is not important unless a client must use other programs/functions to parse the original URL or refactor the original URL. At this point, theHTTP server can query the req. RequestUri, while HTTP clients can use url{host: "example.com", Opaque: "//example.com/go%2f"} instead {Host: "example.com", Path: "/go/"}.

Example

Func Parse

Func Parse (Rawurl string) (URL *url, err error)

The parse function parses rawurl as a URL struct,rawurl can be an absolute address or a relative address.

Func Parserequesturi

Func Parserequesturi (Rawurl string) (URL *url, err error)

The Parserequesturi function parses rawurl as a URL struct, and this function assumes that Rawurl is in an HTTP request, This assumes that the parameter is an absolute url or an absolute path, and assumes that the URL does not have a #fragment suffix. (The Web browser will not send the URL to the Web server until the suffix is removed)

Func (*url) isabs

Func (U *url) isabs () bool

The function returns True if the URL is an absolute url .

Func (*url) Query

Func (U *url) Query () Values

The Query method parses the rawquery field and returns the values type key-value pair it represents.

Func (*url) RequestUri

Func (U *url) requesturi () string

The RequestUri method returns the encoded path?query or opaque?query string, which is used in the HTTP request.

Func (*url) String

Func (U *url) string () string

String to refactor the URL into a legitimate URL string.

Func (*url) Parse

Func (U *url) Parse (ref string) (*url, error)

The parse method parses a URLwith u as the context, andref can be an absolute or relative URL.

Failure to parse this method returns nil, err,otherwise the returned result is consistent with resolvereference .

Func (*url) resolvereference

Func (U *url) resolvereference (ref *url) *url

This method complements a URI to an absolute URI based on an absolute Uri , see RFC 3986 section 5.2. The parameter ref can be an absolute URI or a relative URI. resolvereference always returns a new URL instance, even if the instance is exactly the same as u or ref . If ref is an absolute uri, this method ignores the reference URI and returns a copy of ref .

Type Userinfo

//contains hidden or non-exported fields }

The Userinfo type is a non-modifiable encapsulation of the user name and password details of a URL . A real Userinfo value must be guaranteed to have a user name (but according to RFC 2396 can be an empty string) and an optional password.

Func User

Func User (username string) *userinfo

The user function returns a *userinfothat does not have a password set to username .

Func UserPassword

Func userpassword (username, password string) *userinfo

the UserPassword function returns a *userinfowith the user name set to usernameand the password set to password .

This function should be used only for old-fashioned sites, because the risk is high and is not recommended, see RFC 2396.

Func (*userinfo) Username

Func (U *userinfo) Username () string

The Username method returns the user name.

Func (*userinfo) Password

Func (U *userinfo) Password () (string, BOOL)

If you set a password to return the password and true, it will return false.

Func (*userinfo) String

Func (U *userinfo) string () string

The String method returns the encoded user information in the format "username[:p assword]".

Type Values

Type Values map[string][]string

values will be mapped to a list of values. It is typically used for querying the parameters and properties of the form. is different from http. Header This dictionary type, the key ofValues is case-sensitive.

Example

Func parsequery

Func parsequery (query string) (M Values, err Error)

The parsequery function parses a URL -encoded query string and returns a dictionary of the Values type that can represent the query. This function always returns a non- nil dictionary that contains all the valid query parameters, anderr is used to describe the first error (if any) encountered while decoding.

Func (Values) Get

Func (v Values) Get (key String) string

Get gets the first value of the value set corresponding to the key . If there is no value for the key , the assembly returns an empty string. To get a set of values, use mapdirectly.

Func (Values) Set

Func (v Values) Set (key, value string)

The Set method sets the set of values corresponding to key to only value, which replaces the existing set of values.

Func (Values) Add

Func (v Values) ADD (key, value string)

Add adds value to the value set that is associated with the key after the original value.

Func (Values) Del

Func (v Values) Del (key string)

Del Deletes the value set associated with the key .

Func (Values) Encode

Func (v Values) Encode () string

The Encode method encodes the v into a URL -encoded format ("Bar=baz&foo=quux"), which is sorted by key when encoded.