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IT/클래스

URL 클래스

Beautifulkim 2018. 5. 22. 00:19
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import java.net.*;
import java.io.*;
 
public class URLEx {
    public static void main(String[] args) throws MalformedURLException, IOException {
        
        URL url = new URL("http", "java.sun.com", 8800, "index.jsp?name=syh1011#content");
        String protocol = url.getProtocol();
        String host = url.getHost();
        int port = url.getPort();
        int defaultPort = url.getDefaultPort();
        
        String path = url.getPath();
        String query = url.getQuery();
        String ref = url.getRef();
        String _url = url.toExternalForm();
        String mixUrl = null;
        if (port == -1) 
        {
            mixUrl = protocol + "//" + host + path + "?" + query + "#" + ref;
        }
        else
        {
            mixUrl = protocol + "//" + host + ":" + port + path + "?" + query + "#" + ref;
        }
        
        if(port == -1) port = url.getDefaultPort();
        
        System.out.printf("프로토콜 : %s \n", protocol);
        System.out.printf("호스트 : %s \n", host);
        System.out.printf("포트 : %d \n",  port);
        System.out.printf("패스 : %s \n",  path);
        System.out.printf("쿼리 : %s \n",  query);
        System.out.printf("ref : %s \n",  ref);
        System.out.printf("mixURL : %s \n",  mixUrl);
        System.out.printf("defaultPort : %s \n",  defaultPort);
        System.out.printf("URL : %s \n",  _url);
        
        url = new URL("http://java.sun.com");
        InputStream input = url.openStream();
        int readByte;
        System.out.println("=== 문서의 내용 ===");
        while ( ( (readByte = input.read() ) != -1) ) 
        {
            System.out.print( (char) readByte );
        }
        input.close();
    }
}
 
cs


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프로토콜 : http 
호스트 : java.sun.com 
포트 : 8800 
패스 : index.jsp 
쿼리 : name=syh1011 
ref : content 
mixURL : http//java.sun.com:8800index.jsp?name=syh1011#content 
defaultPort : 80 
URL : http://java.sun.com:8800index.jsp?name=syh1011#content 
=== 문서의 내용 ===
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   var ssUrlType = "2";
   
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       g_navNode_Path[1] = 'otnen_java';
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<title>Oracle Technology Network for Java Developers | Oracle Technology Network | Oracle </title>
<meta name="Title" content="Oracle Technology Network for Java Developers | Oracle Technology Network | Oracle ">
<meta name="Description" content="Oracle Technology Network is the ultimate, complete, and authoritative source of technical information and learning about Java.">
<meta name="Keywords" content="java, javafx">
<meta name="robots" content="INDEX, FOLLOW">
<meta name="country" content="">
<meta name="Language" content="en">
<meta name="Updated Date" content="4/16/18 5:48 PM">
 
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    ul#navigation div.submenu {border-bottom:1px solid #b7b7b7;}
    ul#navigation div.submenu .bottomleft{background:none; width:15px; height:30px; float:left;  margin-left:-16px; margin-bottom:-42px; }
    ul#navigation div.submenu .bottomcenter{background:none; height:30px;  margin-left:15px; margin-right:15px; float:left; width:380px;} 
    ul#navigation div.submenu .bottomright{background:none; width:15px; height:30px; float:left; }
    ul#navigation div.submenu .partner_bottomleft{ background:none; width:15px; height:30px;  float:left; margin-left:-16px; margin-bottom:-42px; clear:left; margin-top:15px;}
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        <li><a data-lbl="cta-050118-account-header-cloud-trial" href="https://cloud.oracle.com/en_US/tryit?intcmp=ocom-header">Sign Up&mdash;Free Trial</a></li>
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    </div>
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    <a id="maincontent">&nbsp;</a></div>
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<div id="hm1v0">
<div id="hm1w1"><!--- BEGIN homepage feature 2 -->
<div class="hm1w2 first"><a href="https://shop.oracle.com/apex/f?p=CLOUD:FREE&amp;intcmp=java-hp-otn"><img style="left: 0px; width: 575px; top: -4px; height: 308px;" alt="devs" src="/technetwork/java/cloud-trial-resize-3752359.png" /></a> <!-- <h3>JavaOne</h3> --> <!--div class="hm1w3" style="top: 231px; left: 10px; width: 400px; height: 57px;">
<h2><a onClick="navTrack('otn','en','jdf1','JavaOne');" href="https://shop.oracle.com/apex/f?p=CLOUD:FREE&intcmp=java-hp-otn"> Get building today </a>&nbsp;</h2>
<p class="metainfo"><a onClick="navTrack('otn','en','jdf1','j1session','cloud');" june="" sao="" brazil="" a="" href="https://shop.oracle.com/apex/f?p=CLOUD:FREE&intcmp=java-hp-otn">Posted 06/01/17 &nbsp;//&nbsp; Tags: </a><a target="_blank" href="https://community.oracle.com/community/java">java, javaee, javase, IoT</a> <a target="_blank" href="https://community.oracle.com/community/java/javaone">JavaOne</a> &nbsp;//&nbsp; <a target="" href="/technetwork/indexes/index-085150.html"><strong>Headlines Archive</strong></a></p>
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<h2><a onClick="navTrack('otn','en','jdf3','javamag');" href=" http://ora.cl/Ns26t"><i>Java Magazine January/February Issue</i></a></h2>
<!-- <p><a href="http://ora.cl/YT6t" onClick="navTrack('otn','en','jdf3','javase','javase8''javase7','javaembedded');"> Check out the special issue on Reactive Programming</a></p> --><span style="font-size: smaller;">Posted 1/30/18&nbsp; //&nbsp; Tags: </span><a target="_blank" href="https://community.oracle.com/community/java"><span style="font-size: smaller;">java</span></a><span style="font-size: smaller;">, </span><a target="_blank" href="https://community.oracle.com/community/enterprise_manager"><span style="font-size: smaller;">enterprise</span></a><span style="font-size: smaller;">, </span><a target="_blank" href="https://community.oracle.com/community/java/java-ee-java-enterprise-edition"><span style="font-size: smaller;">Java EE</span></a><span style="font-size: smaller;">&nbsp; //&nbsp; </span><a target="" href="/technetwork/indexes/index-085150.html"><span style="font-size: smaller;"><strong>Headlines Archive</strong></span></a></div>
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/technetwork/java/oraclecode2017-3753537.png" alt="developer" width="573" height="307" /> &lt; <!-- <h3>OTN Summit Replay</h3> -->
<div style="left: 5px; width: 544px; top: 224px; height: 56px;" class="hm1w3">
<h2><a href="https://go.oracle.com/oraclecode"> Oracle Code&nbsp;</a></h2>
<a onClick="navTrack('otn','en','jdk','Code');" href="https://go.oracle.com/oraclecode"> Join us at Oracle Code conferences, a series of one-day developer conference being held worldwide. </a>
<p class="metainfo">Posted 2/06/18&nbsp; //&nbsp; Tags: <a target="_blank" href="https://community.oracle.com/community/java">Java</a>, <a target="_blank" href="https://community.oracle.com/community/development_tools">Development Tools</a>, <a target="_blank" href="https://community.oracle.com/community/java/java-ee-java-enterprise-edition">DevOps</a> &nbsp;//&nbsp; <a target="" href="/technetwork/indexes/index-085150.html"><strong>Headlines Archive</strong></a></p>
</div>
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<h3>Software Downloads</h3>
<a target="" class="viewall" onClick="navTrack('otn','en','jddl','alldownloads');" href="/technetwork/indexes/downloads/index.html">View All Downloads</a></div>
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<h3>Top Downloads</h3>
<ul>
    <li><a onClick="navTrack('otn','en','jddl','javase');" href="/technetwork/java/javase/downloads/index.html">Java SE</a></li>
    <li><a onClick="navTrack('otn','en','jddl','javaee');" href="/technetwork/java/javaee/downloads/index.html">Java EE and GlassFish</a></li>
    <li><a onClick="navTrack('otn','en','jddl','javafx');" href="/technetwork/java/javase/downloads/index.html">JavaFX</a></li>
    <li><a onClick="navTrack('otn','en','jddl','javame');" target="" href="/technetwork/java/embedded/javame/embed-me/downloads/java-embedded-java-me-download-2162242.html">Java ME</a></li>
    <li><a onClick="navTrack('otn','en','jddl','jdeveloper');" href="/technetwork/developer-tools/jdev/downloads/index.html">JDeveloper&nbsp;and ADF</a></li>
    <li><a onClick="navTrack('otn','en','jddl','oepe');" href="/technetwork/developer-tools/eclipse/downloads/index.html">Enterprise Pack for Eclipse</a><a onClick="navTrack('otn','en','jddl','wls');" href="/technology/software/products/middleware/index.html"><br />
    </a></li>
    <li><a target="" href="http://netbeans.org/downloads/">NetBeans IDE</a><a target="" href="http://netbeans.org/downloads/"><br />
    </a></li>
    <li><a target="" href="/technetwork/community/developer-vm/index.html">Pre-Built VM for Java Devs</a></li>
</ul>
<a class="getbttn" onClick="navTrack('otn','en','jddl','getjavanew');" href="/technetwork/java/javase/downloads/index.html"><img alt="Get Java" src="/ocom/groups/public/@otn/documents/digitalasset/1906207.gif" /></a></div>
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<h3>New Downloads</h3>
<ul>
    <li><a href="/technetwork/java/javase/downloads/index.html">Java SE 10.0.1</a>
    <p>Released 2018/04/17</p>
    </li>
 
    <li><a href="/technetwork/java/javase/downloads/index.html">Java SE 8 Update 171/ 172</a>
    <p>Released 2018/04/17</p>
    </li>
    
    <li><a href="/technetwork/java/embedded/embedded-se/downloads/index.html">Java SE Embedded 8 Update 171</a>
    <p>Released 2018/04/17</p>
    </li>
    <li><a href="/technetwork/java/javase/cpu-psu-explained-2331472.html">*Java CPU and PSU <br />
    &nbsp;Releases Explained</a></li>
    <li><a href="http://www.oracle.com/technetwork/java/embedded/javacard/overview/index.html" target=""> Java Card 3.0.5u2</a></li>
</ul>
<!-- <a target="" href="https://cloud.oracle.com/java?intcmp=CLD-javacloudservicebutton-sm" class="getbttn" onClick="navTrack('otn','en','button','javacloudservicebutton-sm');"><img src="/ocom/groups/public/@otn/documents/digitalasset/1932159.gif" align="bottom" alt="Get Java Cloud" /></a>  --></div>
</div>
</div>
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<h3>What's New</h3>
<div class="hp05w1">
<div class="hp05w2"><img alt="" src="/ocom/groups/public/@otn/documents/digitalasset/1917282.jpg" width="41" height="32" /></div>
<div class="hp05w3"><a href="https://cloud.oracle.com/tryit?intcmp=ocom-otn">Java in the Cloud: Rapidly develop and deploy Java business applications in the cloud. <span class="hp05cta">Start for free.</span></a></div>
</div>
</div>
<!-- /HP05v0 -->  <!-- hm2v0 -->
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<h3>Essential Links</h3>
<ul>
    <li><a onClick="navTrack('otn','en','jdelinks','about us')" href="/technetwork/community/join/overview/index.html">About Us/Become a Member</a></li>
    <li><a onClick="navTrack('otn','en','jdelinks','javaapis')" href="/technetwork/java/api-141528.html">Java APIs</a></li>
    <li><a target="" onClick="navTrack('otn','en','jdelinks','articles')" href="https://community.oracle.com/community/java/java_desktop">Technical Articles</a></li>
    <li><a onClick="navTrack('otn','en','jdelinks','new2java')" href="/technetwork/topics/newtojava/overview/index.html">New to Java</a></li>
    <li><a onClick="navTrack('otn','en','jdelinks','Java Certification and Training')" href="http://education.oracle.com/pls/web_prod-plq-dad/ou_product_category.getFamilyPage?p_family_id=48&amp;intcmp=WWOU11042424MPP055">Java Certification &amp; Training</a></li>
    <li><a onClick="navTrack('otn','en','jdelinks','Java Bug Database')" href="http://bugs.sun.com/bugdatabase/">Java Bug Database</a></li>
    <li><a onClick="navTrack('otn','en','jdelinks','javablog')" target="" href="http://blogs.oracle.com/java">&quot;The Java Source&quot; Blog<br />
    </a></li>
    <li><a onClick="navTrack('otn','en','jdelinks','Twitter')" target="" href="http://twitter.com/java">@Java<br />
    </a></li>
    <li><a onClick="navTrack('otn','en','jdelinks','developernewsletters')" href="/subscribe/index.html#tech">Java Developer Newsletter</a></li>
    <li><a target="" onClick="navTrack('otn','en','jdelinks','javadevmagazine')" href="http://www.oracle.com/technetwork/java/javamagazine"><i>Java Magazine</i></a></li>
    <li><a onClick="navTrack('otn','en','jdelinks','youtubejava')" href="http://www.youtube.com/java">Demos and Videos<br />
    </a></li>
    <li><a href="https://community.oracle.com/community/java">Community Platform</a></li>
    <li><a onClick="navTrack('otn','en','jdelinks','JavaUserGroups')" target="" href="https://community.oracle.com/community/java/jug">Java User Groups</a></li>
    <li><a onClick="navTrack('otn','en','jdelinks','JavaChamps')" target="" href="https://community.oracle.com/community/java/java-champions">Java Champions</a></li>
    <li><a onClick="navTrack('otn','en','jdelinks','JavaCommunityProcess')" href="http://jcp.org/en/home/index">Java Community Process</a></li>
    <li><a target="" onClick="navTrack('otn','en','jdelinks','Adopt A JSR')" href="https://community.oracle.com/community/java/jcp/adopt-a-jsr">Adopt A JSR</a></li>
    <li><a onClick="navTrack('otn','en','jdelinks','facebook')" href="http://www.facebook.com/ilovejava">Facebook</a> | <a onClick="navTrack('otn','en','jdelinks','forums')" target="" href="http://community.oracle.com/community/java">Forums</a><a onClick="navTrack('otn','en','jdelinks','joinotn')" href="/technetwork/community/join/index.html"><br />
    </a></li>
    <li><a href="http://events.oracle.com/search/search?group=Events&amp;keyword=java">Events </a>| <a target="" href="https://community.oracle.com/groups/otn-vts-java-replay-library">Virtual Technology Summit <br />
    </a></li>
    <br />
    <br />
    <a onClick="navTrack('otn','en','button','javacloudservicebutton-lg')" target="" href="https://cloud.oracle.com/tryit?intcmp=ocom-otn"><img alt="Oracle Cloud" src="/ocom/groups/public/@otn/documents/digitalasset/1939460.jpg" align="middle" /></a> </ul>
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    <h3>Developer Spotlight</h3>
    <a target="" href="https://community.oracle.com/docs/DOC-1008823">     <br />
    Java EE&mdash;the Most Lightweight Enterprise Framework?</a> <br />
    <a target="" href="https://community.oracle.com/docs/DOC-1008824">     <br />
    Modular and Reusable Java EE Architecture with Docker</a> <br />
    <br />
    <a target="_blank" href="https://go.oracle.com/javacloud">     Special Offer: Oracle Cloud for Java</a> <br />
    <a target="" href="https://community.oracle.com/docs/DOC-1007145">     <br />
    The Java Trove: Part II</a><br />
    <a target="" href="https://community.oracle.com/docs/DOC-1006954">     <br />
    Lambda Usage with Collections and Method References</a><br />
    <a target="" href="https://community.oracle.com/docs/DOC-1004888">     <br />
    Shareloc: Share Your Location with Friends Using the Cloud</a><br />
    <a target="" href="https://community.oracle.com/docs/DOC-1005785">     <br />
    The Java Trove: Part I</a><br />
    <a target="" href="https://community.oracle.com/docs/DOC-1003597">     <br />
    Getting Started with Lambda Expressions</a><br />
    <a target="" href="https://community.oracle.com/docs/DOC-1003506">     <br />
    Filters in RESTful Java</a><br />
    <a target="" href="https://community.oracle.com/docs/DOC-1002108">     <br />
    Getting Onboard Oracle Java Cloud Service&nbsp;</a><br />
    <a target="" href="https://community.oracle.com/docs/DOC-1001176">     <br />
    Migrating from Desktop to Cloud-Native Web Applications </a><br />
    <a target="" href="https://community.oracle.com/docs/DOC-917746"><br />
    Converting an Existing OpenJFX Application to a Mobile Application Using Gluon</a><br />
    <a target="" href="https://community.oracle.com/docs/DOC-998953"><br />
    Putting Hypermedia Back in REST with JAX-RS </a><br />
    <a target="" href="https://community.oracle.com/docs/DOC-998210"><br />
    Step-by-Step High Availability with Docker and Java EE <br />
    </a><br />
    <a target="" href="https://community.oracle.com/docs/DOC-995861">Dependency Management with Maven</a><br />
    <a target="" href="https://community.oracle.com/docs/DOC-995305"><br />
    CompletableFuture in Java 8 </a><br />
    <a target="" href="https://community.oracle.com/docs/DOC-994258"><br />
    Java User Groups around the World</a><br />
    <a target="" href="https://community.oracle.com/docs/DOC-992746"><br />
    Medusa: Gauges for JavaFX </a><br />
    <a target="" href="https://community.oracle.com/docs/DOC-991686"><br />
    Optionals: Patterns and Good Practices </a><br />
    <a target="" href="https://community.oracle.com/docs/DOC-982272"><br />
    Java ME + Raspberry Pi + Sensors = IoT World Part 4<br />
    </a><a target="" href="https://community.oracle.com/docs/DOC-920950"><br />
    Java SE 8 in Practice </a><br />
    <a target="" href="https://www.youtube.com/user/java"><br />
    &nbsp;     </a><br />
    <a target="" href="https://community.oracle.com/docs/DOC-910779"><br />
    &nbsp;     </a></div>
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    <h3>Blogs</h3>
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