{"id":687,"date":"2015-05-25T10:29:51","date_gmt":"2015-05-25T02:29:51","guid":{"rendered":"https:\/\/ai.zhousir.top\/?p=687"},"modified":"2026-08-18T12:09:34","modified_gmt":"2026-08-18T04:09:34","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":"
\n

\u7edf\u4e00\u8d44\u6e90\u5b9a\u4f4d\u7b26 URL<\/strong>\uff08Uniform Resource Locator\uff09\u662f WWW \u5ba2\u6237\u673a\u8bbf\u95ee Internet \u65f6\u7528\u6765\u6807\u8bc6\u8d44\u6e90\u7684\u540d\u5b57\u548c\u5730\u5740\u3002\u8d85\u6587\u672c\u94fe\u8def\u9760 URL \u7ef4\u6301\uff0c\u683c\u5f0f\u662f\uff1a<\/p>\n

<METHOD>:\/\/<HOSTNAME:PORT>\/<PATH>\/<FILE><\/code><\/pre>\n
<\/p>\n
\u5176\u4e2d METHOD \u662f\u4f20\u8f93\u534f\u8bae\uff1bHOSTNAME \u662f\u6587\u6863\u6240\u5728\u4e3b\u673a\u540d\uff08DNS \u70b9\u5730\u5740\uff09\uff1bPORT \u662f\u670d\u52a1\u7aef\u53e3\uff08\u53ef\u7701\u7565\uff09\uff1bPATH \u662f\u8def\u5f84\uff0cFILE \u662f\u6587\u4ef6\u540d\u3002\u4f8b\u5982 http:\/\/www.xinhua.net\/<\/code>\u3001http:\/\/www.xinhua.net\/view\/6079.html<\/code>\u3002<\/p>\n
\u4e00\u3001URL \u7c7b<\/h2>\n
java.net.URL<\/code> \u7684\u4e00\u4e2a\u5bf9\u8c61\u53ef\u4ee5\u8868\u793a\u4e00\u4e2a\u7f51\u7edc\u8d44\u6e90\uff0c\u7528\u6765\u5bfb\u5740\u3001\u5b9a\u4f4d\u8fde\u63a5\u3001\u5728\u5ba2\u6237\u673a\u4e0e\u670d\u52a1\u5668\u4e4b\u95f4\u76f4\u63a5\u8bbf\u95ee\u3002\u5e38\u7528\u6784\u9020\u65b9\u6cd5\u662f URL(String s)<\/code>\uff0cs \u6307\u51fa\u7f51\u7edc\u4e2d\u7684\u4e00\u4e2a\u8d44\u6e90\u3002\u521b\u5efa\u65f6\u53ef\u80fd\u629b\u51fa MalformedURLException<\/code>\uff0c\u6240\u4ee5\u5e94\u653e\u5728 try\u2026catch \u91cc\uff1a<\/p>\n
URL myURL;\ntry {\n    myURL = new URL(\"http:\/\/www.xinhua.net:80\/\");\n} catch (MalformedURLException e) {\n    System.out.println(\"\u6709\u9519\u7684 URL: \" + e);\n}<\/code><\/pre>\n
\u4e8c\u3001URLConnection \u7c7b<\/h2>\n
\u8981\u63a5\u6536\u548c\u53d1\u9001\u4fe1\u606f\u8fd8\u8981\u7528 URLConnection<\/code>\u3002\u83b7\u5f97\u8be5\u5bf9\u8c61\u76f8\u5f53\u4e8e\u5b8c\u6210\u5bf9\u6307\u5b9a URL \u7684\u4e00\u6b21 HTTP \u8fde\u63a5\uff1a\u5148\u521b\u5efa URL\uff0c\u518d\u8c03\u7528 openConnection()<\/code>\u3002<\/p>\n
URL mu = new URL(\"http:\/\/www.sun.com\/\");\nURLConnection muC = mu.openConnection();<\/code><\/pre>\n\n\n\n\n\n\n\n
\u65b9\u6cd5<\/th>\n\u4f5c\u7528<\/th>\n<\/tr>\n<\/thead>\n
getOutputStream()<\/td>\n\u83b7\u5f97\u5411\u8fdc\u7a0b\u4e3b\u673a\u53d1\u9001\u4fe1\u606f\u7684\u8f93\u51fa\u6d41<\/td>\n<\/tr>\n
getInputStream()<\/td>\n\u83b7\u5f97\u4ece\u8fdc\u7a0b\u4e3b\u673a\u8bfb\u53d6\u4fe1\u606f\u7684\u8f93\u5165\u6d41<\/td>\n<\/tr>\n
connect()<\/td>\n\u5efa\u7acb\u7f51\u7edc\u8fde\u63a5<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\u4e09\u3001\u7528\u6570\u636e\u6d41\u8bfb\u7f51\u9875<\/h2>\n
\u53d1\u9001\u548c\u63a5\u6536\u90fd\u8981\u5148\u62ff\u5230\u6d41\u5bf9\u8c61\uff0c\u518d\u5305\u88c5\u6210\u7f13\u51b2\u8f93\u5165\/\u8f93\u51fa\u6d41\u3002\u7f51\u4e0a\u8d44\u6e90\u7528\u5b8c\u540e\u5e94\u53ca\u65f6\u5173\u95ed\uff0c\u4f8b\u5982 dis.close()<\/code>\u3002<\/p>\n
\u3010\u4f8b 13-2\u3011\u4ece\u6587\u672c\u6846\u8bfb\u53d6\u7f51\u5740\uff0c\u7528\u6570\u636e\u6d41\u8bfb\u7f51\u9875\u5185\u5bb9\u3002\u539f\u6587\u6709\u82e5\u5e72\u62fc\u5199\u9519\u8bef\uff08\u5982 openConnectin<\/code>\u3001JTextFileld<\/code>\uff09\uff0c\u4e0b\u9762\u6309\u53ef\u8fd0\u884c\u5199\u6cd5\u66f4\u6b63\uff1a<\/p>\n
import java.net.*;\nimport java.awt.*;\nimport java.awt.event.*;\nimport java.io.*;\nimport 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    JTextField infield = new JTextField(30);\n    JTextArea showArea = new JTextArea();\n    JButton b = new JButton(\"download\");\n    JPanel p = new JPanel();\n    DownNetFile() {\n        super(\"read network text file application\");\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, \"North\");\n        con.add(jsp, \"Center\");\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);\n            URLConnection tc = url.openConnection();\n            tc.connect();\n            InputStreamReader in = new InputStreamReader(tc.getInputStream());\n            BufferedReader dis = new BufferedReader(in);\n            String inline;\n            while ((inline = dis.readLine()) != null) {\n                showArea.append(inline + \"\\n\");\n            }\n            dis.close();\n        } catch (MalformedURLException e) {\n            e.printStackTrace();\n        } catch (IOException e) {\n            e.printStackTrace();\n        }\n    }\n}<\/code><\/pre>\n
readByURL()<\/code> \u7684\u8fc7\u7a0b\uff1a\u7528\u7f51\u5740\u521b\u5efa URL \u2192 openConnection()<\/code> \u5f97\u5230\u8fde\u63a5 \u2192 connect()<\/code> \u2192 \u5305\u88c5\u6210 BufferedReader \u2192 readLine()<\/code> \u8bfb\u6587\u672c\u3002<\/p>\n
\n
\u4e00\u53e5\u8bdd\u603b\u7ed3\uff1aURL \u8d1f\u8d23\u5b9a\u4f4d\u8d44\u6e90\uff0cURLConnection.openConnection \u62ff\u5230\u6d41\uff0c\u8bfb\u5b8c\u8bb0\u5f97\u5173\u95ed\u3002<\/strong><\/p>\n<\/blockquote>\n<\/section>\n","protected":false},"excerpt":{"rendered":"
\u7edf\u4e00\u8d44\u6e90\u5b9a\u4f4d\u7b26 URL\uff08Uniform Resource Locator\uff09\u662f WWW \u5ba2\u6237\u673a\u8bbf\u95ee Intern […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[20],"tags":[41,26],"_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}]}}