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進行一些判斷,時常需要去解析網址(Request.Url)的

2019-11-01 14:49

ASP.NET 如何取得 Request URL 的各個部分

我們在開發網頁應用程式,時常需要去解析網址(Request.Url)的每個片段,進行一些判斷。例如說 "http://localhost:1897/News/Press/Content.aspx/123?id=1#toc", 我們想要取得網址裡第一層目錄的名字(News)用以判斷不同的頁面標題(Page Title)。

我看很多人都用字串的 IndexOf 方法與 Substring 方法:

Request.Url.PathAndQuery.Substring(1, Request.Url.PathAndQuery.IndexOf("/", 1)-1)

這實在太埋沒 .NET 的強大設計了,事實上在 Request 物件就已經提供很多方便的屬性(Property)可供取得網址的片段。

底下這張表就是各種跟 Browser Request 的網址相關的屬性與用法:

 

網址:http://localhost:1897/News/Press/Content.aspx /123?id=1#toc

Request.ApplicationPath

/

Request.PhysicalPath

D:ProjectsSolutionwebNewsPressContent.aspx

System.IO.Path.GetDirectoryName(Request.PhysicalPath)

D:ProjectsSolutionwebNewsPress

Request.PhysicalApplicationPath

D:ProjectsSolutionweb

System.IO.Path.GetFileName(Request.PhysicalPath)

Content.aspx

Request.CurrentExecutionFilePath

/News/Press/Content.aspx

Request.FilePath

/News/Press/Content.aspx

Request.Path

/News/Press/Content.aspx/123

Request.RawUrl

/News/Press/Content.aspx/123?id=1

Request.Url.AbsolutePath

/News/Press/Content.aspx/123

Request.Url.AbsoluteUri

http://localhost:1897/News/Press/Content.aspx/123?id=1

Request.Url.Scheme

http

Request.Url.Host

localhost

Request.Url.Port

1897

Request.Url.Authority

localhost:1897

Request.Url.LocalPath

/News/Press/Content.aspx/123

Request.PathInfo

/123

Request.Url.PathAndQuery

/News/Press/Content.aspx/123?id=1

Request.Url.Query

?id=1

Request.Url.Fragment

 

Request.Url.Segments

/
News/
Press/
Content.aspx/
123

所以當你看了這張表之後,你還會想用 Request.Url.PathAndQuery.Substring(1, Request.Url.PathAndQuery.IndexOf("/", 1)-1) 這種寫法嗎?

用這樣寫 Request.Url.Segments[1].Replace("/", "") 不是又短又直覺嗎? ^_^

以下是產生以上表格的程式碼:

protected void Page_Load(object sender, EventArgs e)
{

StringBuilder sb = new StringBuilder();

sb.Append("<table cellpadding=3 cellspacing=0 border=1>");

sb.Append("<tr><td colspan=2>");
sb.Append("網址:"http://localhost:1897/News/Press/Content.aspx/123?id=1#toc">http://localhost:1897/News/Press/Content.aspx/123?id=1#toc");
sb.Append("</td></tr>");

// Request.ApplicationPath
sb.Append("<tr><td>");
sb.Append("Request.ApplicationPath");
sb.Append("</td><td>");
sb.Append("<b>" + Request.ApplicationPath + "</b>");
sb.Append("</td></tr>");

// Request.PhysicalPath
sb.Append("<tr><td>");
sb.Append("Request.PhysicalPath");
sb.Append("</td><td>");
sb.Append("<b>" + Request.PhysicalPath + "</b>");
sb.Append("</td></tr>");

// System.IO.Path.GetDirectoryName(Request.PhysicalPath)
sb.Append("<tr><td>");
sb.Append("System.IO.Path.GetDirectoryName(Request.PhysicalPath)");
sb.Append("</td><td>");
sb.Append("<b>" + System.IO.Path.GetDirectoryName(Request.PhysicalPath) + "</b>");
sb.Append("</td></tr>");

// Request.PhysicalApplicationPath
sb.Append("<tr><td>");
sb.Append("Request.PhysicalApplicationPath");
sb.Append("</td><td>");
sb.Append("<b>" + Request.PhysicalApplicationPath + "</b>");
sb.Append("</td></tr>");

// System.IO.Path.GetFileName(Request.PhysicalPath)
sb.Append("<tr><td>");
sb.Append("System.IO.Path.GetFileName(Request.PhysicalPath)");
sb.Append("</td><td>");
sb.Append("<b>" + System.IO.Path.GetFileName(Request.PhysicalPath)

  • "</b>");
    sb.Append("</td></tr>");

// Request.CurrentExecutionFilePath
sb.Append("<tr><td>");
sb.Append("Request.CurrentExecutionFilePath");
sb.Append("</td><td>");
sb.Append("<b>" + Request.CurrentExecutionFilePath + "</b>");
sb.Append("</td></tr>");

// Request.FilePath
sb.Append("<tr><td>");
sb.Append("Request.FilePath");
sb.Append("</td><td>");
sb.Append("<b>" + Request.FilePath + "</b>");
sb.Append("</td></tr>");

// Request.Path
sb.Append("<tr><td>");
sb.Append("Request.Path");
sb.Append("</td><td>");
sb.Append("<b>" + Request.Path + "</b>");
sb.Append("</td></tr>");

// Request.RawUrl
sb.Append("<tr><td>");
sb.Append("Request.RawUrl");
sb.Append("</td><td>");
sb.Append("<b>" + Request.RawUrl + "</b>");
sb.Append("</td></tr>");

// Request.Url.AbsolutePath
sb.Append("<tr><td>");
sb.Append("Request.Url.AbsolutePath");
sb.Append("</td><td>");
sb.Append("<b>" + Request.Url.AbsolutePath + "</b>");
sb.Append("</td></tr>");

// Request.Url.AbsoluteUri
sb.Append("<tr><td>");
sb.Append("Request.Url.AbsoluteUri");
sb.Append("</td><td>");
sb.Append("<b>" + Request.Url.AbsoluteUri + "</b>");
sb.Append("</td></tr>");

// Request.Url.Scheme
sb.Append("<tr><td>");
sb.Append("Request.Url.Scheme");
sb.Append("</td><td>");
sb.Append("<b>" + Request.Url.Scheme + "</b>");
sb.Append("</td></tr>");

// Request.Url.Host
sb.Append("<tr><td>");
sb.Append("Request.Url.Host");
sb.Append("</td><td>");
sb.Append("<b>" + Request.Url.Host + "</b>");
sb.Append("</td></tr>");

// Request.Url.Port
sb.Append("<tr><td>");
sb.Append("Request.Url.Port");
云顶娱乐官方入口 ,sb.Append("</td><td>");
sb.Append("<b>" + Request.Url.Port + "</b>");
sb.Append("</td></tr>");

// Request.Url.Authority
sb.Append("<tr><td>");
sb.Append("Request.Url.Authority");
sb.Append("</td><td>");
sb.Append("<b>" + Request.Url.Authority + "</b>");
sb.Append("</td></tr>");

// local Request.Url.LocalPath
sb.Append("<tr><td>");
sb.Append("Request.Url.LocalPath");
sb.Append("</td><td>");
sb.Append("<b>" + Request.Url.LocalPath + "</b>");
sb.Append("</td></tr>");

// Request.PathInfo
sb.Append("<tr><td>");
sb.Append("Request.PathInfo");
sb.Append("</td><td>");
sb.Append("<b>" + Request.PathInfo + "</b>");
sb.Append("</td></tr>");

// Request.Url.PathAndQuery
sb.Append("<tr><td>");
sb.Append("Request.Url.PathAndQuery");
sb.Append("</td><td>");
sb.Append("<b>" + Request.Url.PathAndQuery + "</b>");
sb.Append("</td></tr>");

// Request.Url.Query
sb.Append("<tr><td>");
sb.Append("Request.Url.Query");
sb.Append("</td><td>");
sb.Append("<b>" + Request.Url.Query + "</b>");
sb.Append("</td></tr>");

// Request.Url.Fragment
// 原則上你應該無法從 Request.Url.Fragment 取得任何資料,因為通常 Browser 不會送出 #toc 這個部分
sb.Append("<tr><td>");
sb.Append("Request.Url.Fragment");
sb.Append("</td><td>");
sb.Append("<b>" + Request.Url.Fragment + "</b>");
sb.Append("</td></tr>");

// Request.Url.Segments
sb.Append("<tr>");
sb.Append("<td>");
sb.Append("Request.Url.Segments");
sb.Append("</td>");
sb.Append("<td>");
string[] segments = Request.Url.Segments;
foreach (string s in segments)
{
sb.Append("<b>" + s + "</b>");
sb.Append("<br/>");
}
sb.Append("</td>");
sb.Append("</tr>");

sb.Append("</table>");

ltlTable.Text = sb.ToString();
}

注意事項

  • 當程式部署(Deploy)到 IIS 6 之後,假設你的網址是 http://localhost:1897/News/Press/Content.aspx/123? ,IIS 不知為何會將問號 ( ? ) 給刪除掉,以致於 ASP.NET 使用 Request.Url.Query 是空字串!如果你的程式有判斷到這部分時就要特別注意,因為照理說應該會抓到才對!不知道是不是 IIS 6 的 Bug ?

 

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ASP.NET 如何取得 Request URL 的各個部分

我們在開發網頁應用程式,時常需要去解析網址(Request.Url)的每個片段,進行一些判斷。例如說 "http://localhost:1897/News/Press/Content.aspx/123?id=1#toc![](http://i.ixnp.comv3.43.0.1/t.gif)",我們想要取得網址裡第一層目錄的名字(News)用以判斷不同的頁面標題(Page Title)。

我看很多人都用字串的 IndexOf 方法與 Substring 方法:

Request.Url.PathAndQuery.Substring(1, Request.Url.PathAndQuery.IndexOf("/", 1)-1)

這實在太埋沒 .NET 的強大設計了,事實上在 Request 物件就已經提供很多方便的屬性(Property)可供取得網址的片段。

底下這張表就是各種跟 Browser Request 的網址相關的屬性與用法:

 

網址:http://localhost:1897/News/Press/Content.aspx/123?id=1#toc

Request.ApplicationPath

/

Request.PhysicalPath

D:ProjectsSolutionwebNewsPressContent.aspx

System.IO.Path.GetDirectoryName(Request.PhysicalPath)

D:ProjectsSolutionwebNewsPress

Request.PhysicalApplicationPath

D:ProjectsSolutionweb

System.IO.Path.GetFileName(Request.PhysicalPath)

Content.aspx

Request.CurrentExecutionFilePath

/News/Press/Content.aspx

Request.FilePath

/News/Press/Content.aspx

Request.Path

/News/Press/Content.aspx/123

Request.RawUrl

/News/Press/Content.aspx/123?id=1

Request.Url.AbsolutePath

/News/Press/Content.aspx/123

Request.Url.AbsoluteUri

http://localhost:1897/News/Press/Content.aspx/123?id=1

Request.Url.Scheme

http

Request.Url.Host

localhost

Request.Url.Port

1897

Request.Url.Authority

localhost:1897

Request.Url.LocalPath

/News/Press/Content.aspx/123

Request.PathInfo

/123

Request.Url.PathAndQuery

/News/Press/Content.aspx/123?id=1

Request.Url.Query

?id=1

Request.Url.Fragment

Request.Url.Segments

/
News/
Press/
Content.aspx/
123

所以當你看了這張表之後,你還會想用 Request.Url.PathAndQuery.Substring(1, Request.Url.PathAndQuery.IndexOf("/", 1)-1) 這種寫法嗎?

用這樣寫 Request.Url.Segments[1].Replace("/", "") 不是又短又直覺嗎? ^_^

以下是產生以上表格的程式碼:

    protected void Page_Load(object sender, EventArgs e)
    {

        StringBuilder sb = new StringBuilder();

        sb.Append("<table cellpadding=3 cellspacing=0 border=1>");

        sb.Append("<tr><td colspan=2>");
        sb.Append("網址:"http://localhost:1897/News/Press/Content.aspx/123?id=1#toc">http://localhost:1897/News/Press/Content.aspx/123?id=1#toc");
        sb.Append("</td></tr>");

        // Request.ApplicationPath
        sb.Append("<tr><td>");
        sb.Append("Request.ApplicationPath");
        sb.Append("</td><td>");
        sb.Append("<b>" + Request.ApplicationPath + "</b>");
        sb.Append("</td></tr>");

        // Request.PhysicalPath
        sb.Append("<tr><td>");
        sb.Append("Request.PhysicalPath");
        sb.Append("</td><td>");
        sb.Append("<b>" + Request.PhysicalPath + "</b>");
        sb.Append("</td></tr>");

        // System.IO.Path.GetDirectoryName(Request.PhysicalPath)
        sb.Append("<tr><td>");
        sb.Append("System.IO.Path.GetDirectoryName(Request.PhysicalPath)");
        sb.Append("</td><td>");
        sb.Append("<b>" + System.IO.Path.GetDirectoryName(Request.PhysicalPath) + "</b>");
        sb.Append("</td></tr>");

        // Request.PhysicalApplicationPath
        sb.Append("<tr><td>");
        sb.Append("Request.PhysicalApplicationPath");
        sb.Append("</td><td>");
        sb.Append("<b>" + Request.PhysicalApplicationPath + "</b>");
        sb.Append("</td></tr>");

        // System.IO.Path.GetFileName(Request.PhysicalPath)
        sb.Append("<tr><td>");
        sb.Append("System.IO.Path.GetFileName(Request.PhysicalPath)");
        sb.Append("</td><td>");
        sb.Append("<b>" + System.IO.Path.GetFileName(Request.PhysicalPath) + "</b>");
        sb.Append("</td></tr>");

 

        // Request.CurrentExecutionFilePath
        sb.Append("<tr><td>");
        sb.Append("Request.CurrentExecutionFilePath");
        sb.Append("</td><td>");
        sb.Append("<b>" + Request.CurrentExecutionFilePath + "</b>");
        sb.Append("</td></tr>");

        // Request.FilePath
        sb.Append("<tr><td>");
        sb.Append("Request.FilePath");
        sb.Append("</td><td>");
        sb.Append("<b>" + Request.FilePath + "</b>");
        sb.Append("</td></tr>");

        // Request.Path
        sb.Append("<tr><td>");
        sb.Append("Request.Path");
        sb.Append("</td><td>");
        sb.Append("<b>" + Request.Path + "</b>");
        sb.Append("</td></tr>");

        // Request.RawUrl
        sb.Append("<tr><td>");
        sb.Append("Request.RawUrl");
        sb.Append("</td><td>");
        sb.Append("<b>" + Request.RawUrl + "</b>");
        sb.Append("</td></tr>");

        // Request.Url.AbsolutePath
        sb.Append("<tr><td>");
        sb.Append("Request.Url.AbsolutePath");
        sb.Append("</td><td>");
        sb.Append("<b>" + Request.Url.AbsolutePath + "</b>");
        sb.Append("</td></tr>");

        // Request.Url.AbsoluteUri
        sb.Append("<tr><td>");
        sb.Append("Request.Url.AbsoluteUri");
        sb.Append("</td><td>");
        sb.Append("<b>" + Request.Url.AbsoluteUri + "</b>");
        sb.Append("</td></tr>");

        // Request.Url.Scheme
        sb.Append("<tr><td>");
        sb.Append("Request.Url.Scheme");
        sb.Append("</td><td>");
        sb.Append("<b>" + Request.Url.Scheme + "</b>");
        sb.Append("</td></tr>");

        // Request.Url.Host
        sb.Append("<tr><td>");
        sb.Append("Request.Url.Host");
        sb.Append("</td><td>");
        sb.Append("<b>" + Request.Url.Host + "</b>");
        sb.Append("</td></tr>");

        // Request.Url.Port
        sb.Append("<tr><td>");
        sb.Append("Request.Url.Port");
        sb.Append("</td><td>");
        sb.Append("<b>" + Request.Url.Port + "</b>");
        sb.Append("</td></tr>");

        // Request.Url.Authority
        sb.Append("<tr><td>");
        sb.Append("Request.Url.Authority");
        sb.Append("</td><td>");
        sb.Append("<b>" + Request.Url.Authority + "</b>");
        sb.Append("</td></tr>");

        // local Request.Url.LocalPath
        sb.Append("<tr><td>");
        sb.Append("Request.Url.LocalPath");
        sb.Append("</td><td>");
        sb.Append("<b>" + Request.Url.LocalPath + "</b>");
        sb.Append("</td></tr>");

        // Request.PathInfo
        sb.Append("<tr><td>");
        sb.Append("Request.PathInfo");
        sb.Append("</td><td>");
        sb.Append("<b>" + Request.PathInfo + "</b>");
        sb.Append("</td></tr>");

        // Request.Url.PathAndQuery
        sb.Append("<tr><td>");
        sb.Append("Request.Url.PathAndQuery");
        sb.Append("</td><td>");
        sb.Append("<b>" + Request.Url.PathAndQuery + "</b>");
        sb.Append("</td></tr>");

        // Request.Url.Query
        sb.Append("<tr><td>");
        sb.Append("Request.Url.Query");
        sb.Append("</td><td>");
        sb.Append("<b>" + Request.Url.Query + "</b>");
        sb.Append("</td></tr>");

        // Request.Url.Fragment
        // 原則上你應該無法從 Request.Url.Fragment 取得任何資料,因為通常 Browser 不會送出 #toc 這個部分
        sb.Append("<tr><td>");
        sb.Append("Request.Url.Fragment");
        sb.Append("</td><td>");
        sb.Append("<b>" + Request.Url.Fragment + "</b>");
        sb.Append("</td></tr>");

        // Request.Url.Segments
        sb.Append("<tr>");
        sb.Append("<td>");
        sb.Append("Request.Url.Segments");
        sb.Append("</td>");
        sb.Append("<td>");
        string[] segments = Request.Url.Segments;
        foreach (string s in segments)
        {
            sb.Append("<b>" + s + "</b>");
            sb.Append("<br/>");
        }
        sb.Append("</td>");
        sb.Append("</tr>");

        sb.Append("</table>");

        ltlTable.Text = sb.ToString();

转载地址:http://hi.baidu.com/hnweizhi/blog/item/e45db9fccd538b1009244da7.html

 

本文由云顶娱乐官方入口发布于云顶娱乐网址4118112,转载请注明出处:進行一些判斷,時常需要去解析網址(Request.Url)的

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