erik/HttpStatus
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<h1 id="httpstatus-jsp-tag-library">HttpStatus JSP Tag Library</h1>
<p><a href="http://opensource.org/licenses/BSD-3-Clause"><embed src="https://img.shields.io/badge/license-BSD%203--Clause-blue.svg?style=flat-square" /></a> <a href="https://www.versioneye.com/user/projects/56a6947a1b78fd002d00018a"><embed src="https://www.versioneye.com/user/projects/56a6947a1b78fd002d00018a/badge.svg?style=flat" /></a> <a href="https://travis-ci.org/ethauvin/HttpStatus"><embed src="https://travis-ci.org/ethauvin/HttpStatus.svg?branch=master" /></a> <a href="https://ci.appveyor.com/project/ethauvin/httpstatus"><img src="https://ci.appveyor.com/api/projects/status/w5j4kul3w2rkigxb?svg=true" alt="Build status" /></a> <a href="https://github.com/ethauvin/httpstatus/releases/latest"><embed src="http://github-release-version.herokuapp.com/github/ethauvin/httpstatus/release.svg?style=flat" /></a> <a href="https://maven-badges.herokuapp.com/maven-central/net.thauvin.erik.httpstatus/httpstatus"><img src="https://maven-badges.herokuapp.com/maven-central/net.thauvin.erik.httpstatus/httpstatus/badge.svg" alt="Maven Central" /></a> <a href="https://bintray.com/ethauvin/maven/HttpStatus/_latestVersion"><img src="https://api.bintray.com/packages/ethauvin/maven/HttpStatus/images/download.svg" alt="Download" /></a></p>
<p>A simple <a href="http://www.oracle.com/technetwork/java/javaee/jsp/index.html">JSP</a> Tag Library to display the <a href="#hscode">code</a>, <a href="#hsreason">reason</a> and/or <a href="#hscode">cause</a> for <a href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html">HTTP status codes</a> in JSP error pages.</p>
<hr />
<p>For example:</p>
<pre class="sourceCode jsp"><code class="sourceCode jsp">&lt;%@ page<span class="ot"> isErrorPage</span>=<span class="st">&quot;true&quot;</span><span class="ot"> </span>%&gt;
&lt;%@ taglib<span class="ot"> prefix</span>=<span class="st">&quot;hs&quot;</span><span class="ot"> uri</span>=<span class="st">&quot;http://erik.thauvin.net/taglibs/httpstatus&quot;</span><span class="ot"> </span>%&gt;
&lt;html&gt;&lt;head&gt;
&lt;title&gt;<span class="kw">&lt;hs:code/&gt;</span> <span class="kw">&lt;hs:reason</span><span class="ot"> default</span>=<span class="dt">&quot;Server Error&quot;</span><span class="kw">/&gt;</span>&lt;/title&gt;
&lt;/head&gt;
&lt;h1&gt;<span class="kw">&lt;hs:reason</span><span class="ot"> default</span>=<span class="dt">&quot;Server Error&quot;</span><span class="kw">/&gt;</span>&lt;/h1&gt;
Cause: &lt;pre&gt;<span class="kw">&lt;hs:cause</span><span class="ot"> default</span>=<span class="dt">&quot;Unable to complete your request.&quot;</span><span class="kw">/&gt;</span>&lt;/pre&gt;
...</code></pre>
<p>or</p>
<pre class="sourceCode jsp"><code class="sourceCode jsp">&lt;%@ page<span class="ot"> isErrorPage</span>=<span class="st">&quot;true&quot;</span><span class="ot"> import</span>=<span class="st">&quot;net.thauvin.erik.httpstatus.Reasons&quot;</span><span class="ot"> </span>%&gt;
&lt;%= Reasons.getReasonPhrase(pageContext.getErrorData().getStatusCode()) %&gt;</code></pre>
<p>would display on a <a href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.5.2">501 status code</a>:</p>
<pre><code>Not Implemented</code></pre>
<hr />
<h2 id="hscause">hs:cause</h2>
<p>The <code>&lt;hs:cause/&gt;</code> tag displays the cause of current HTTP status code, if any. A shorthand for:</p>
<pre class="sourceCode jsp"><code class="sourceCode jsp">&lt;%= pageContext.getErrorData().getThrowable().getCause().getLocalizedMessage() %&gt;</code></pre>
<p>Optional attributes are:</p>
<table>
<thead>
<tr class="header">
<th style="text-align: left;">Attribute</th>
<th style="text-align: left;">Description</th>
</tr>
</thead>
<tbody>
<tr class="odd">
<td style="text-align: left;"><code>default</code></td>
<td style="text-align: left;">The fallback value to output, if no cause is available.</td>
</tr>
<tr class="even">
<td style="text-align: left;"><code>escapeXml</code></td>
<td style="text-align: left;">Converts &lt;, &gt;, &amp;, ', &quot; to their corresponding <a href="http://dev.w3.org/html5/html-author/charref">entity codes</a>. Value is <code>true</code> by default.</td>
</tr>
</tbody>
</table>
<h2 id="hscode">hs:code</h2>
<p>The <code>&lt;hs:code/&gt;</code> tag displays the current HTTP status code, if any. A shorthand for:</p>
<pre class="sourceCode jsp"><code class="sourceCode jsp">&lt;%= pageContext.getErrorData().getStatusCode() %&gt;</code></pre>
<h2 id="hsreason">hs:reason</h2>
<p>The <code>&lt;hs:reason/&gt;</code> tag displays the reason for a HTTP status code, if any. Optional attributes are:</p>
<table>
<thead>
<tr class="header">
<th style="text-align: left;">Attribute</th>
<th style="text-align: left;">Description</th>
</tr>
</thead>
<tbody>
<tr class="odd">
<td style="text-align: left;"><code>code</code></td>
<td style="text-align: left;">The HTTP status error code. If not specified the current status code is used.</td>
</tr>
<tr class="even">
<td style="text-align: left;"><code>default</code></td>
<td style="text-align: left;">The fallback value to output, if no reason is available.</td>
</tr>
<tr class="odd">
<td style="text-align: left;"><code>escapeXml</code></td>
<td style="text-align: left;">Converts &lt;, &gt;, &amp;, ', &quot; to their corresponding <a href="http://dev.w3.org/html5/html-author/charref">entity codes</a>. Value is <code>true</code> by default.</td>
</tr>
</tbody>
</table>
<p>The reasons are defined in a <a href="http://docs.oracle.com/javase/8/docs/api/java/util/ResourceBundle.html">ResourceBundle</a> properties as follows:</p>
<table>
<thead>
<tr class="header">
<th style="text-align: left;">Status Code</th>
<th style="text-align: left;">Reason</th>
</tr>
</thead>
<tbody>
<tr class="odd">
<td style="text-align: left;"><code>100</code></td>
<td style="text-align: left;">Continue</td>
</tr>
<tr class="even">
<td style="text-align: left;"><code>101</code></td>
<td style="text-align: left;">Switching Protocols</td>
</tr>
<tr class="odd">
<td style="text-align: left;"><code>102</code></td>
<td style="text-align: left;">Processing</td>
</tr>
<tr class="even">
<td style="text-align: left;"><code>200</code></td>
<td style="text-align: left;">OK</td>
</tr>
<tr class="odd">
<td style="text-align: left;"><code>201</code></td>
<td style="text-align: left;">Created</td>
</tr>
<tr class="even">
<td style="text-align: left;"><code>202</code></td>
<td style="text-align: left;">Accepted</td>
</tr>
<tr class="odd">
<td style="text-align: left;"><code>203</code></td>
<td style="text-align: left;">Non-Authoritative Information</td>
</tr>
<tr class="even">
<td style="text-align: left;"><code>204</code></td>
<td style="text-align: left;">No Content</td>
</tr>
<tr class="odd">
<td style="text-align: left;"><code>205</code></td>
<td style="text-align: left;">Reset Content</td>
</tr>
<tr class="even">
<td style="text-align: left;"><code>206</code></td>
<td style="text-align: left;">Partial Content</td>
</tr>
<tr class="odd">
<td style="text-align: left;"><code>207</code></td>
<td style="text-align: left;">Multi-Status</td>
</tr>
<tr class="even">
<td style="text-align: left;"><code>208</code></td>
<td style="text-align: left;">Already Reported</td>
</tr>
<tr class="odd">
<td style="text-align: left;"><code>226</code></td>
<td style="text-align: left;">IM Used</td>
</tr>
<tr class="even">
<td style="text-align: left;"><code>300</code></td>
<td style="text-align: left;">Multiple Choices</td>
</tr>
<tr class="odd">
<td style="text-align: left;"><code>301</code></td>
<td style="text-align: left;">Moved Permanently</td>
</tr>
<tr class="even">
<td style="text-align: left;"><code>302</code></td>
<td style="text-align: left;">Moved Temporarily</td>
</tr>
<tr class="odd">
<td style="text-align: left;"><code>303</code></td>
<td style="text-align: left;">See Other</td>
</tr>
<tr class="even">
<td style="text-align: left;"><code>304</code></td>
<td style="text-align: left;">Not Modified</td>
</tr>
<tr class="odd">
<td style="text-align: left;"><code>305</code></td>
<td style="text-align: left;">Use Proxy</td>
</tr>
<tr class="even">
<td style="text-align: left;"><code>306</code></td>
<td style="text-align: left;">Switch Proxy</td>
</tr>
<tr class="odd">
<td style="text-align: left;"><code>307</code></td>
<td style="text-align: left;">Temporary Redirect</td>
</tr>
<tr class="even">
<td style="text-align: left;"><code>308</code></td>
<td style="text-align: left;">Permanent Redirect</td>
</tr>
<tr class="odd">
<td style="text-align: left;"><code>400</code></td>
<td style="text-align: left;">Bad Request</td>
</tr>
<tr class="even">
<td style="text-align: left;"><code>401</code></td>
<td style="text-align: left;">Unauthorized</td>
</tr>
<tr class="odd">
<td style="text-align: left;"><code>402</code></td>
<td style="text-align: left;">Payment Required</td>
</tr>
<tr class="even">
<td style="text-align: left;"><code>403</code></td>
<td style="text-align: left;">Forbidden</td>
</tr>
<tr class="odd">
<td style="text-align: left;"><code>404</code></td>
<td style="text-align: left;">Not Found</td>
</tr>
<tr class="even">
<td style="text-align: left;"><code>405</code></td>
<td style="text-align: left;">Method Not Allowed</td>
</tr>
<tr class="odd">
<td style="text-align: left;"><code>406</code></td>
<td style="text-align: left;">Not Acceptable</td>
</tr>
<tr class="even">
<td style="text-align: left;"><code>407</code></td>
<td style="text-align: left;">Proxy Authentication Required</td>
</tr>
<tr class="odd">
<td style="text-align: left;"><code>408</code></td>
<td style="text-align: left;">Request Timeout</td>
</tr>
<tr class="even">
<td style="text-align: left;"><code>409</code></td>
<td style="text-align: left;">Conflict</td>
</tr>
<tr class="odd">
<td style="text-align: left;"><code>410</code></td>
<td style="text-align: left;">Gone</td>
</tr>
<tr class="even">
<td style="text-align: left;"><code>411</code></td>
<td style="text-align: left;">Length Required</td>
</tr>
<tr class="odd">
<td style="text-align: left;"><code>412</code></td>
<td style="text-align: left;">Precondition Failed</td>
</tr>
<tr class="even">
<td style="text-align: left;"><code>413</code></td>
<td style="text-align: left;">Request Entity Too Large</td>
</tr>
<tr class="odd">
<td style="text-align: left;"><code>414</code></td>
<td style="text-align: left;">Request-URI Too Long</td>
</tr>
<tr class="even">
<td style="text-align: left;"><code>415</code></td>
<td style="text-align: left;">Unsupported Media Type</td>
</tr>
<tr class="odd">
<td style="text-align: left;"><code>416</code></td>
<td style="text-align: left;">Requested Range Not Satisfiable</td>
</tr>
<tr class="even">
<td style="text-align: left;"><code>417</code></td>
<td style="text-align: left;">Expectation Failed</td>
</tr>
<tr class="odd">
<td style="text-align: left;"><code>418</code></td>
<td style="text-align: left;">I'm A Teapot</td>
</tr>
<tr class="even">
<td style="text-align: left;"><code>419</code></td>
<td style="text-align: left;">Insufficient Space on Resource</td>
</tr>
<tr class="odd">
<td style="text-align: left;"><code>420</code></td>
<td style="text-align: left;">Method Failure</td>
</tr>
<tr class="even">
<td style="text-align: left;"><code>421</code></td>
<td style="text-align: left;">Misdirected Request</td>
</tr>
<tr class="odd">
<td style="text-align: left;"><code>422</code></td>
<td style="text-align: left;">Unprocessable Entity</td>
</tr>
<tr class="even">
<td style="text-align: left;"><code>423</code></td>
<td style="text-align: left;">Locked</td>
</tr>
<tr class="odd">
<td style="text-align: left;"><code>424</code></td>
<td style="text-align: left;">Failed Dependency</td>
</tr>
<tr class="even">
<td style="text-align: left;"><code>426</code></td>
<td style="text-align: left;">Upgrade Required</td>
</tr>
<tr class="odd">
<td style="text-align: left;"><code>428</code></td>
<td style="text-align: left;">Precondition Required</td>
</tr>
<tr class="even">
<td style="text-align: left;"><code>429</code></td>
<td style="text-align: left;">Too Many Requests</td>
</tr>
<tr class="odd">
<td style="text-align: left;"><code>431</code></td>
<td style="text-align: left;">Request Header Fields Too Large</td>
</tr>
<tr class="even">
<td style="text-align: left;"><code>440</code></td>
<td style="text-align: left;">Login Timeout</td>
</tr>
<tr class="odd">
<td style="text-align: left;"><code>444</code></td>
<td style="text-align: left;">No Response</td>
</tr>
<tr class="even">
<td style="text-align: left;"><code>449</code></td>
<td style="text-align: left;">Retry With</td>
</tr>
<tr class="odd">
<td style="text-align: left;"><code>450</code></td>
<td style="text-align: left;">Blocked by Windows Parental Controls</td>
</tr>
<tr class="even">
<td style="text-align: left;"><code>451</code></td>
<td style="text-align: left;">Unavailable For Legal Reasons</td>
</tr>
<tr class="odd">
<td style="text-align: left;"><code>494</code></td>
<td style="text-align: left;">Request Header Too Large</td>
</tr>
<tr class="even">
<td style="text-align: left;"><code>495</code></td>
<td style="text-align: left;">Cert Error</td>
</tr>
<tr class="odd">
<td style="text-align: left;"><code>496</code></td>
<td style="text-align: left;">No Cert</td>
</tr>
<tr class="even">
<td style="text-align: left;"><code>497</code></td>
<td style="text-align: left;">HTTP to HTTPS</td>
</tr>
<tr class="odd">
<td style="text-align: left;"><code>498</code></td>
<td style="text-align: left;">Token Expired/Invalid</td>
</tr>
<tr class="even">
<td style="text-align: left;"><code>499</code></td>
<td style="text-align: left;">Client Closed Request</td>
</tr>
<tr class="odd">
<td style="text-align: left;"><code>500</code></td>
<td style="text-align: left;">Internal Server Error</td>
</tr>
<tr class="even">
<td style="text-align: left;"><code>501</code></td>
<td style="text-align: left;">Not Implemented</td>
</tr>
<tr class="odd">
<td style="text-align: left;"><code>502</code></td>
<td style="text-align: left;">Bad Gateway</td>
</tr>
<tr class="even">
<td style="text-align: left;"><code>503</code></td>
<td style="text-align: left;">Service Unavailable</td>
</tr>
<tr class="odd">
<td style="text-align: left;"><code>504</code></td>
<td style="text-align: left;">Gateway Timeout</td>
</tr>
<tr class="even">
<td style="text-align: left;"><code>505</code></td>
<td style="text-align: left;">HTTP Version Not Supported</td>
</tr>
<tr class="odd">
<td style="text-align: left;"><code>506</code></td>
<td style="text-align: left;">Variant Also Negotiates</td>
</tr>
<tr class="even">
<td style="text-align: left;"><code>507</code></td>
<td style="text-align: left;">Insufficient Storage</td>
</tr>
<tr class="odd">
<td style="text-align: left;"><code>508</code></td>
<td style="text-align: left;">Loop Detected</td>
</tr>
<tr class="even">
<td style="text-align: left;"><code>509</code></td>
<td style="text-align: left;">Bandwidth Limit Exceeded</td>
</tr>
<tr class="odd">
<td style="text-align: left;"><code>510</code></td>
<td style="text-align: left;">Not Extended</td>
</tr>
<tr class="even">
<td style="text-align: left;"><code>511</code></td>
<td style="text-align: left;">Network Authentication Required</td>
</tr>
<tr class="odd">
<td style="text-align: left;"><code>520</code></td>
<td style="text-align: left;">Unknown Error</td>
</tr>
<tr class="even">
<td style="text-align: left;"><code>522</code></td>
<td style="text-align: left;">Origin Connection Time-out</td>
</tr>
<tr class="odd">
<td style="text-align: left;"><code>598</code></td>
<td style="text-align: left;">Network Read Timeout Error</td>
</tr>
<tr class="even">
<td style="text-align: left;"><code>599</code></td>
<td style="text-align: left;">Network Connect Timeout Error</td>
</tr>
</tbody>
</table>
<hr />
<h2 id="usage-with-gradle-or-maven">Usage with <a href="https://gradle.org/">Gradle</a> or <a href="http://maven.apache.org/">Maven</a></h2>
<p>Include the following in your <code>build.gradle</code> file:</p>
<pre class="gradle"><code>dependencies {
compile &#39;net.thauvin.erik.httpstatus:httpstatus:1.0.3&#39;
}</code></pre>
<p>or as a Maven artifact:</p>
<pre class="sourceCode xml"><code class="sourceCode xml"><span class="kw">&lt;dependency&gt;</span>
<span class="kw">&lt;groupId&gt;</span>net.thauvin.erik.httpstatus<span class="kw">&lt;/groupId&gt;</span>
<span class="kw">&lt;artifactId&gt;</span>httpstatus<span class="kw">&lt;/artifactId&gt;</span>
<span class="kw">&lt;version&gt;</span>1.0.3<span class="kw">&lt;/version&gt;</span>
<span class="kw">&lt;/dependency&gt;</span></code></pre>
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