{"id":687,"date":"2015-05-25T10:29:51","date_gmt":"2015-05-25T02:29:51","guid":{"rendered":"https:\/\/ai.zhousir.top\/?p=687"},"modified":"2015-05-25T10:30:55","modified_gmt":"2015-05-25T02:30:55","slug":"%e7%bb%9f%e4%b8%80%e8%b5%84%e6%ba%90%e5%ae%9a%e4%bd%8d%e7%ac%a6url","status":"publish","type":"post","link":"https:\/\/ai.zhousir.top\/?p=687","title":{"rendered":"\u7edf\u4e00\u8d44\u6e90\u5b9a\u4f4d\u7b26URL"},"content":{"rendered":"

\u7edf\u4e00\u8d44\u6e90\u5b9a\u4f4d\u7b26URL(Uniform Resource Locator)\u662fwww\u5ba2\u6237\u673a\u8bbf\u95eeInternet\u65f6\u7528\u6765\u6807\u8bc6\u8d44\u6e90\u7684\u540d\u5b57\u548c\u5730\u5740\u3002\u8d85\u6587\u672c\u94fe\u8def\u7531\u7edf\u4e00\u8d44\u6e90\u5b9a\u4f4d\u7b26URL\u7ef4\u6301\u3002URL\u7684\u683c\u5f0f\u662f\uff1a
\n [java]<METHOD>:\/\/<HOSTNAME:PORT>\/<PATH>\/<FILE>[\/java]
\n<\/p>\n

\u5176\u4e2d\uff1aMethod\u662f\u4f20\u8f93\u534f\u8bae\uff1aHOSTNAME\u662f\u6587\u6863\u548c\u670d\u52a1\u5668\u6240\u5728\u7684Internet\u4e3b\u673a\u540d\uff08\u57df\u540d\u7cfb\u7edf\u4e2dDNS\u4e2d\u7684\u70b9\u5730\u5740\uff09;PORT\u662f\u670d\u52a1\u7aef\u53e3\u53f7\uff08\u53ef\u7701\u7565\uff09\uff1bPATH\u662f\u8def\u5f84\u540d\uff0cFILE\u662f\u6587\u4ef6\u540d\u3002\u4f8b\u5982\uff1a
\n http:\/\/www.xinhua.net\/(http\u662f\u534f\u8bae\u540d\uff0cwww.xinhua.net\u662f\u4e3b\u673a\u540d)
\n http:\/\/www.xinhua.net\/view\/6079.html (www.xinhua.net\u662f\u4e3b\u673a\u540d\uff0cview\/6079.html\u662f\u6587\u4ef6\u8def\u5f84\u548c\u6587\u4ef6\u540d)
\nURL\u7c7b<\/p>\n

Java.net\u5305\u6709URL\u7c7b\uff0c\u4e00\u4e2aURL\u5bf9\u8c61\u53ef\u4ee5\u8868\u793a\u4e00\u4e2a\u7f51\u7edc\u8d44\u6e90\u3002\u7a0b\u5e8f\u5229\u7528URL\u5bf9\u8c61\u80fd\u5b9e\u73b0Internet\u5bfb\u5740\u3001\u7f51\u7edc\u8d44\u6e90\u7684\u5b9a\u4f4d\u8fde\u63a5\u3001\u5728\u5ba2\u6237\u673a\u4e0e\u670d\u52a1\u5668\u4e4b\u95f4\u76f4\u63a5\u8bbf\u95ee\u7b49\u3002URL\u7c7b\u7684\u6784\u9020\u65b9\u6cd5\u662f
\n URL(String s)
\n\u5176\u4e2d\uff0cs\u6307\u51fa\u7f51\u7edc\u4e2d\u7684\u4e00\u4e2a\u8d44\u6e90\u3002
\n\u5229\u7528URL\u5bf9\u8c61\u8bbf\u95ee\u7f51\u4e0a\u8d44\u6e90\u7684\u65b9\u6cd5\u662f\uff1a\u5148\u521b\u5efaURL\u5bf9\u8c61\uff0c\u5982\u4ee5\u4e0b\u4ee3\u7801\u6240\u793a\uff1a
\n[java]URL myURL;
\ntry {
\n myURL = new URL(\u201chttp:\/\/www.xinhua.net:80\/\u201d);
\n}catch(MalformedURLException e){
\n System.out.println(\u201c\u6709\u9519\u7684URL:\u201d+url+e);
\n}[\/java]
\n\u56e0\u521b\u5efaURL\u5bf9\u8c61\u53ef\u80fd\u4f1a\u4ea7\u751fMalformedURLException\u5f02\u5e38\u3002\u6240\u4ee5\uff0c\u521b\u5efaURL\u5bf9\u8c61\u7684\u4ee3\u7801\u5e94\u51fa\u73b0\u5728try\u2026catch\u8bed\u53e5\u5757\u4e2d\uff0c\u4ee5\u4fbf\u80fd\u6355\u6349\u7f51\u5740\u9519\u8bef\u5f02\u5e38\u3002
\nURLConnection\u7c7b<\/p>\n

\u8981\u63a5\u6536\u548c\u53d1\u5173\u4fe1\u606f\u8fd8\u8981\u7528URLConnection\u7c7b\uff0c\u7a0b\u5e8f\u83b7\u5f97\u4e00\u4e2aURLConnection\u5bf9\u8c61\uff0c\u76f8\u5f53\u4e8e\u5b8c\u6210\u5bf9\u6307\u5b9aURL\u7684\u4e00\u4e2aHTTP\u8fde\u63a5\u3002\u4ee5\u4e0b\u662f\u793a\u610f\u83b7\u5f97URLConnection\u5bf9\u8c61\u7684\u4ee3\u7801\u3002
\n URL mu = new URL(\u201chttp:\/\/www.sun.com\/\u201d);\/\/\u5148\u8981\u521b\u5efa\u4e00\u4e2aURL\u5bf9\u8c61
\n URLConnection muC = mu.openConnection();\/\/\u83b7\u5f97URLConnection\u5bf9\u8c61
\n\u4e0a\u8ff0\u4ee3\u7801\u8bf4\u660e\uff0c\u5148\u8981\u521b\u5efa\u4e00\u4e2aURL\u5bf9\u8c61\uff0c\u7136\u540e\u5229\u7528URL\u5bf9\u8c61\u7684openConnection()\u65b9\u6cd5\uff0c\u4ece\u7cfb\u7edf\u83b7\u5f97\u4e00\u4e2aURLConnection\u5bf9\u8c61\u3002\u7a0b\u5e8f\u6709\u4e86URLConnection\u5bf9\u8c61\u540e\uff0c\u5c31\u53ef\u4f7f\u7528URLConnection\u7c7b\u63d0\u4f9b\u7684\u4ee5\u4e0b\u65b9\u6cd5\u83b7\u5f97\u6d41\u5bf9\u8c61\u548c\u5b9e\u73b0\u7f51\u7edc\u8fde\u63a5\uff1a
\ngetOutputStream()\uff1a\u83b7\u5f97\u5411\u8fdc\u7a0b\u4e3b\u673a\u53d1\u9001\u4fe1\u606f\u7684OutputStream\u6d41\u5bf9\u8c61\uff1b
\ngetInputStream()\uff1a\u83b7\u5f97\u4ece\u8fdc\u7a0b\u4e3b\u673a\u83b7\u53d6\u4fe1\u606f\u7684InputStream\u6d41\u5bf9\u8c61\u3002\u6709\u4e86\u7f51\u7edc\u8fde\u63a5\u7684\u8f93\u5165\u548c\u8f93\u51fa\u6d41\uff0c\u7a0b\u5e8f\u5c31\u53ef\u5b9e\u73b0\u8fdc\u7a0b\u901a\u4fe1\uff1b
\nconnect()\uff1a\u8bbe\u7f6e\u7f51\u7edc\u8fde\u63a5\u3002
\n\u4fe1\u606f\u7684\u53d1\u9001\u548c\u63a5\u6536<\/p>\n

\u53d1\u9001\u548c\u63a5\u6536\u4fe1\u606f\u8981\u83b7\u5f97\u6d41\u5bf9\u8c61\uff0c\u5e76\u7531\u6d41\u5bf9\u8c61\u521b\u5efa\u8f93\u5165\u6216\u8f93\u51fa\u6570\u636e\u6d41\u5bf9\u8c61\u3002\u7136\u540e\uff0c\u5c31\u53ef\u4ee5\u7528\u6d41\u7684\u65b9\u6cd5\u8bbf\u95ee\u7f51\u4e0a\u8d44\u6e90\u3002
\n\u53c2\u89c1\u3010\u4f8b13-2\u3011\u7a0b\u5e8f\u4e2d\u7684\u65b9\u6cd5readByURL()\uff0c\u8be5\u65b9\u6cd5\u8bf4\u660e\u5df2\u77e5\u7f51\u5740\u8bfb\u53d6\u7f51\u9875\u5185\u5bb9\u7684\u8fc7\u7a0b\u3002\u65b9\u6cd5\u5229\u7528\u7f51\u5740\u53c2\u6570\u521b\u5efa\u4e00\u4e2aURL\u5bf9\u8c61url\uff0c\u63a5\u7740\u5229\u7528\u5bf9\u8c61url\u7684openConnect()\u65b9\u6cd5\uff0c\u83b7\u5f97URLConnection\u5bf9\u8c61tc\uff0c\u7528\u5bf9\u8c61tc\u7684connect()\u65b9\u6cd5\u5efa\u7acb\u7f51\u7edc\u8fde\u63a5\uff0c\u63a5\u7740\u83b7\u5f97\u7f51\u7edc\u8fde\u63a5\u7684InputStreamReader\u7c7b\u5bf9\u8c61in\uff0c\u5c06\u5bf9\u8c61in\uff0c\u8f6c\u5316\u6210\u4e3aBufferedRead\u5bf9\u8c61dis\uff0c\u6539\u4e3a\u7f13\u51b2\u5f0f\u8f93\u5165\u3002\u6700\u540e\uff0c\u7528\u5bf9\u8c61dis\u7684readLine()\u65b9\u6cd5\u5b8c\u6210\u8bfb\u53d6\u7f51\u7edc\u6587\u672c\u6570\u636e\u3002
\n\u5982\u540c\u672c\u5730\u6570\u636e\u6d41\u4e00\u6837\uff0c\u7f51\u4e0a\u8d44\u6e90\u4f7f\u7528\u7ed3\u675f\u540e\uff0c\u6570\u636e\u6d41\u4e5f\u5e94\u53ca\u65f6\u5173\u95ed\u3002\u4f8b\u5982\uff0c\u4ee3\u7801
\n dis.close();
\n\u5173\u95ed\u5148\u524d\u4ee3\u7801\u5efa\u7acb\u7684\u6d41dis\u3002
\n\u3010\u4f8b13-2\u3011\u4ee5\u6570\u636e\u6d41\u65b9\u6cd5\u8bfb\u53d6\u7f51\u9875\u5185\u5bb9\u7684\u5e94\u7528\u7a0b\u5e8f\u3002\u7a0b\u5e8f\u8fd0\u884c\u65f6\uff0c\u7f51\u5740\u4ece\u6587\u672c\u6846\u4e2d\u8bfb\u53d6\u3002
\n[java]import java.net.*;
\nimport java.awt.*;
\nimport java.awt.event.*;
\nimport java.io.*;
\nimport java.javax.swing.*;
\npublic class Example10_2{
\n public static void main(String args[]){
\n new downNetFile();
\n }
\n}
\nclass DownNetFile extends JFrame implements ActionListener{
\n JTextFileld infield = new JTextField(30);
\n JTextarea showArea = new JTextArea();
\n JButton b = new JButton(\u201cdownload\u201d);
\n JPanel p = new JPanel();
\n DownNetFile(){
\n super(\u201cread network text file application\u201d);
\n Container con = this.getContentPane();
\n p.add(infield);
\n p.add(b);
\n JScrollPane jsp = new JScrollPane(showArea);
\n b.addActionListener(this);
\n con.add(p,\u201dNorth\u201d);
\n con.add(jsp,\u201dCenter\u201d);
\n setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
\n setSize(500,400);
\n setVisible(true);
\n }
\n public void actionPerformed(ActionEvent e){
\n readByURL(infield.getText());
\n }
\n public void readByURL(String urlName){
\n try{
\n URL url = new URL(urlName);\/\/\u7531\u7f51\u5740\u521b\u5efaURL\u5bf9\u8c61
\n URLConnection tc = url.openConnectin();\/\/\u83b7\u5f97URLConnection\u5bf9\u8c61
\n tc.connect();\/\/\u8bbe\u7f6e\u7f51\u7edc\u8fde\u63a5
\n InptStreamReader in = new InputStreamReader(tc.getInputStream());
\n BufferedReader dis = new BufferedReader(in);\/\/\u91c7\u7528\u7f13\u51b2\u5f0f\u8f93\u5165
\n String inline;
\n while((inline = dis.readLine())!=null){
\n showArea.append(inline +\u201d\\n\u201d);
\n }
\n dis.close();\/\/\u7f51\u4e0a\u8d44\u6e90\u4f7f\u7528\u7ed3\u675f\u540e\uff0c\u6570\u636e\u6d41\u53ca\u65f6\u5173\u95ed
\n }catch(MalformedURLException e){
\n e.printStackTrace();
\n }
\n catch(IOException e){e.printStacktrace();}
\n \/*\u8bbf\u95ee\u7f51\u4e0a\u8d44\u6e90\u53ef\u80fd\u4ea7\u751fMalformedURLException\u548cIOException\u5f02\u5e38*\/
\n }
\n}
\n[\/java]<\/p>\n","protected":false},"excerpt":{"rendered":"

\u7edf\u4e00\u8d44\u6e90\u5b9a\u4f4d\u7b26URL(Uniform Resource Locator)\u662fwww\u5ba2\u6237\u673a\u8bbf\u95eeInternet\u65f6\u7528 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[20],"tags":[],"_links":{"self":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/687"}],"collection":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=687"}],"version-history":[{"count":3,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/687\/revisions"}],"predecessor-version":[{"id":690,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/687\/revisions\/690"}],"wp:attachment":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=687"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=687"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=687"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}