{"id":3288,"date":"2024-06-23T16:36:01","date_gmt":"2024-06-23T08:36:01","guid":{"rendered":"https:\/\/www.talktop.cn\/?p=3288"},"modified":"2024-12-07T17:12:13","modified_gmt":"2024-12-07T09:12:13","slug":"java-io%e6%b5%81%e8%af%a6%e8%a7%a3","status":"publish","type":"post","link":"https:\/\/www.talktop.cn\/?p=3288","title":{"rendered":"Java IO\u6d41\u8be6\u89e3"},"content":{"rendered":"\n<h5 class=\"wp-block-heading\">\u4e00\u3001IO\u57fa\u672c\u6982\u5ff5<\/h5>\n\n\n\n<p>IO\u662fInput\uff08\u8f93\u5165\uff09\u548cOutput\uff08\u8f93\u51fa\uff09\u7684\u7f29\u5199\uff0c\u4e3b\u8981\u6307\u5728\u7a0b\u5e8f\u8fd0\u884c\u8fc7\u7a0b\u4e2d\uff0c\u8fdb\u884c\u6570\u636e\u7684\u8f93\u5165\u548c\u8f93\u51fa\u64cd\u4f5c\u3002Java\u7684IO\u6d41\u662fJava\u8f93\u5165\u8f93\u51fa\u7cfb\u7edf\u7684\u6838\u5fc3\uff0c\u7528\u4e8e\u8bfb\u53d6\u548c\u5199\u5165\u6570\u636e\u3002\u901a\u8fc7IO\u6d41\uff0c\u7a0b\u5e8f\u53ef\u4ee5\u4ece\u5916\u90e8\u6570\u636e\u6e90\uff08\u5982\u6587\u4ef6\u3001\u7f51\u7edc\uff09\u8bfb\u53d6\u6570\u636e\uff0c\u6216\u5c06\u6570\u636e\u5199\u5165\u5916\u90e8\u6570\u636e\u6e90\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"518\" src=\"https:\/\/www.talktop.cn\/wp-content\/uploads\/2024\/06\/image-6-1024x518.png\" alt=\"\" class=\"wp-image-3289\" style=\"width:600px\" srcset=\"https:\/\/www.talktop.cn\/wp-content\/uploads\/2024\/06\/image-6-1024x518.png 1024w, https:\/\/www.talktop.cn\/wp-content\/uploads\/2024\/06\/image-6-300x152.png 300w, https:\/\/www.talktop.cn\/wp-content\/uploads\/2024\/06\/image-6-768x388.png 768w, https:\/\/www.talktop.cn\/wp-content\/uploads\/2024\/06\/image-6.png 1169w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h5 class=\"wp-block-heading\">\u4e8c\u3001File\u6587\u4ef6\u7c7b\u4ecb\u7ecd<\/h5>\n\n\n\n<p><code>java.io.File<\/code>\u7c7b\u662fJava\u4e2d\u7528\u4e8e\u8868\u793a\u6587\u4ef6\u6216\u76ee\u5f55\u8def\u5f84\u7684\u7c7b\uff0c\u5b83\u63d0\u4f9b\u4e86\u64cd\u4f5c\u6587\u4ef6\u548c\u76ee\u5f55\u7684\u591a\u79cd\u65b9\u6cd5\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u7528\u65b9\u6cd5\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>exists()<\/code>\uff1a\u5224\u65ad\u6587\u4ef6\u6216\u76ee\u5f55\u662f\u5426\u5b58\u5728\u3002<\/li>\n\n\n\n<li><code>isDirectory()<\/code>\uff1a\u5224\u65ad\u662f\u5426\u4e3a\u76ee\u5f55\u3002<\/li>\n\n\n\n<li><code>isFile()<\/code>\uff1a\u5224\u65ad\u662f\u5426\u4e3a\u6587\u4ef6\u3002<\/li>\n\n\n\n<li><code>createNewFile()<\/code>\uff1a\u521b\u5efa\u4e00\u4e2a\u65b0\u6587\u4ef6\u3002<\/li>\n\n\n\n<li><code>mkdir()<\/code>\uff1a\u521b\u5efa\u4e00\u4e2a\u65b0\u76ee\u5f55\u3002<\/li>\n\n\n\n<li><code>delete()<\/code>\uff1a\u5220\u9664\u6587\u4ef6\u6216\u76ee\u5f55\u3002<\/li>\n\n\n\n<li><code>list()<\/code>\uff1a\u5217\u51fa\u76ee\u5f55\u4e0b\u7684\u6587\u4ef6\u548c\u76ee\u5f55\u540d\u79f0\u3002<\/li>\n<\/ul>\n\n\n\n<h5 class=\"wp-block-heading\">\u4e09\u3001IO\u6d41\u79cd\u7c7b\u53ca\u7279\u6027<\/h5>\n\n\n\n<p>Java\u7684IO\u6d41\u6309\u7167\u6d41\u7684\u65b9\u5411\u548c\u529f\u80fd\u53ef\u4ee5\u5206\u4e3a\u56db\u5927\u7c7b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"614\" src=\"https:\/\/www.talktop.cn\/wp-content\/uploads\/2024\/06\/image-7-1024x614.png\" alt=\"\" class=\"wp-image-3290\" srcset=\"https:\/\/www.talktop.cn\/wp-content\/uploads\/2024\/06\/image-7-1024x614.png 1024w, https:\/\/www.talktop.cn\/wp-content\/uploads\/2024\/06\/image-7-300x180.png 300w, https:\/\/www.talktop.cn\/wp-content\/uploads\/2024\/06\/image-7-768x461.png 768w, https:\/\/www.talktop.cn\/wp-content\/uploads\/2024\/06\/image-7.png 1104w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u5b57\u8282\u6d41\uff08Byte Streams\uff09<\/strong>\uff1a\u7528\u4e8e\u5904\u7406\u5b57\u8282\u6570\u636e\uff0c\u4e3b\u8981\u7c7b\u6709<code>InputStream<\/code>\u548c<code>OutputStream<\/code>\u53ca\u5176\u5b50\u7c7b\u3002\n<ul class=\"wp-block-list\">\n<li><code>FileInputStream<\/code>\u548c<code>FileOutputStream<\/code>\uff1a\u7528\u4e8e\u6587\u4ef6\u7684\u5b57\u8282\u8f93\u5165\u548c\u8f93\u51fa\u3002<\/li>\n\n\n\n<li><code>BufferedInputStream<\/code>\u548c<code>BufferedOutputStream<\/code>\uff1a\u63d0\u4f9b\u7f13\u51b2\u529f\u80fd\uff0c\u63d0\u9ad8\u8bfb\u5199\u6548\u7387\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u5b57\u7b26\u6d41\uff08Character Streams\uff09<\/strong>\uff1a\u7528\u4e8e\u5904\u7406\u5b57\u7b26\u6570\u636e\uff0c\u4e3b\u8981\u7c7b\u6709<code>Reader<\/code>\u548c<code>Writer<\/code>\u53ca\u5176\u5b50\u7c7b\u3002\n<ul class=\"wp-block-list\">\n<li><code>FileReader<\/code>\u548c<code>FileWriter<\/code>\uff1a\u7528\u4e8e\u6587\u4ef6\u7684\u5b57\u7b26\u8f93\u5165\u548c\u8f93\u51fa\u3002<\/li>\n\n\n\n<li><code>BufferedReader<\/code>\u548c<code>BufferedWriter<\/code>\uff1a\u63d0\u4f9b\u7f13\u51b2\u529f\u80fd\uff0c\u63d0\u9ad8\u8bfb\u5199\u6548\u7387\uff0c\u5e76\u63d0\u4f9b\u6309\u884c\u8bfb\u53d6\u529f\u80fd\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u6570\u636e\u6d41\uff08Data Streams\uff09<\/strong>\uff1a\u7528\u4e8e\u8bfb\u5199\u57fa\u672c\u6570\u636e\u7c7b\u578b\u7684\u6570\u636e\uff0c\u4e3b\u8981\u7c7b\u6709<code>DataInputStream<\/code>\u548c<code>DataOutputStream<\/code>\u3002\n<ul class=\"wp-block-list\">\n<li>\u53ef\u4ee5\u8bfb\u5199Java\u7684\u57fa\u672c\u6570\u636e\u7c7b\u578b\uff0c\u5982<code>int<\/code>\u3001<code>float<\/code>\u3001<code>double<\/code>\u7b49\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u5bf9\u8c61\u6d41\uff08Object Streams\uff09<\/strong>\uff1a\u7528\u4e8e\u8bfb\u5199Java\u5bf9\u8c61\uff0c\u4e3b\u8981\u7c7b\u6709<code>ObjectInputStream<\/code>\u548c<code>ObjectOutputStream<\/code>\u3002\n<ul class=\"wp-block-list\">\n<li>\u53ef\u4ee5\u5b9e\u73b0\u5bf9\u8c61\u7684\u5e8f\u5217\u5316\u548c\u53cd\u5e8f\u5217\u5316\uff0c\u5373\u5c06\u5bf9\u8c61\u8f6c\u6362\u4e3a\u5b57\u8282\u6d41\uff0c\u4ee5\u4fbf\u5b58\u50a8\u6216\u4f20\u8f93\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<h5 class=\"wp-block-heading\">\u56db\u3001IO\u6d41\u4e2d\u7684\u8def\u5f84\u5206\u9694\u7b26<\/h5>\n\n\n\n<p>\u5728Java\u4e2d\uff0c\u6587\u4ef6\u8def\u5f84\u7684\u5206\u9694\u7b26\u56e0\u64cd\u4f5c\u7cfb\u7edf\u800c\u5f02\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Windows\u7cfb\u7edf\u4f7f\u7528\u53cd\u659c\u6760\uff08<code>\\\\<\/code>\uff09\u3002<\/li>\n\n\n\n<li>Unix\/Linux\u7cfb\u7edf\u4f7f\u7528\u6b63\u659c\u6760\uff08<code>\/<\/code>\uff09\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u4e3a\u4e86\u7f16\u5199\u8de8\u5e73\u53f0\u7684\u4ee3\u7801\uff0cJava\u63d0\u4f9b\u4e86<code>File.separator<\/code>\u6765\u83b7\u53d6\u7cfb\u7edf\u7684\u9ed8\u8ba4\u8def\u5f84\u5206\u9694\u7b26\u3002\u6b64\u5916\uff0c<code>File<\/code>\u7c7b\u8fd8\u63d0\u4f9b\u4e86<code>File.separatorChar<\/code>\u548c<code>File.pathSeparator<\/code>\u7b49\u5e38\u91cf\u3002<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">\u4e94\u3001\u9762\u8bd5\u96c6\u5408\u77e5\u8bc6\u70b9\u6c47\u603b\u53ca\u89e3\u7b54<\/h5>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>IO\u6d41\u7684\u5206\u7c7b\u53ca\u7279\u6027<\/strong>\uff1a\n<ul class=\"wp-block-list\">\n<li>\u5b57\u8282\u6d41\u548c\u5b57\u7b26\u6d41\u7684\u533a\u522b\uff1f\n<ul class=\"wp-block-list\">\n<li>\u5b57\u8282\u6d41\u5904\u7406\u7684\u662f\u5b57\u8282\uff088\u4f4d\uff09\uff0c\u53ef\u4ee5\u5904\u7406\u4efb\u4f55\u7c7b\u578b\u7684\u6570\u636e\uff08\u5982\u56fe\u7247\u3001\u89c6\u9891\uff09\u3002<\/li>\n\n\n\n<li>\u5b57\u7b26\u6d41\u5904\u7406\u7684\u662f\u5b57\u7b26\uff0816\u4f4d\uff09\uff0c\u4e13\u95e8\u7528\u4e8e\u5904\u7406\u6587\u672c\u6570\u636e\uff0c\u81ea\u52a8\u5904\u7406\u5b57\u7b26\u7f16\u7801\u95ee\u9898\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u7f13\u51b2\u6d41\u7684\u4f5c\u7528<\/strong>\uff1a\n<ul class=\"wp-block-list\">\n<li>\u63d0\u9ad8IO\u64cd\u4f5c\u7684\u6548\u7387\uff0c\u51cf\u5c11\u8bfb\u5199\u6b21\u6570\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u5bf9\u8c61\u6d41\u5982\u4f55\u5b9e\u73b0\u5bf9\u8c61\u7684\u5e8f\u5217\u5316\u548c\u53cd\u5e8f\u5217\u5316<\/strong>\uff1a\n<ul class=\"wp-block-list\">\n<li>\u901a\u8fc7\u5b9e\u73b0<code>Serializable<\/code>\u63a5\u53e3\uff0c\u5c06\u5bf9\u8c61\u8f6c\u6362\u4e3a\u5b57\u8282\u6d41\u5b58\u50a8\u6216\u4f20\u8f93\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u5e38\u89c1\u7684IO\u5f02\u5e38\u53ca\u5176\u5904\u7406<\/strong>\uff1a\n<ul class=\"wp-block-list\">\n<li><code>FileNotFoundException<\/code>\uff1a\u6587\u4ef6\u672a\u627e\u5230\u3002<\/li>\n\n\n\n<li><code>IOException<\/code>\uff1a\u8f93\u5165\u8f93\u51fa\u8fc7\u7a0b\u4e2d\u7684\u5f02\u5e38\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<h5 class=\"wp-block-heading\">\u516d\u3001\u5404\u7c7bIO\u6d41\u7684\u5b9e\u9645\u5e94\u7528\u573a\u666f\u4e3e\u4f8b<\/h5>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u6587\u4ef6\u62f7\u8d1d<\/strong>\uff1a<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-code has-white-color has-black-background-color has-text-color has-background has-link-color wp-elements-24a8b5a8a1889104cd6c7341bcf1fd46\"><code>import java.io.*;\n\npublic class FileCopy {\n    public static void main(String&#91;] args) throws IOException {\n        FileInputStream fis = new FileInputStream(\"source.txt\");\n        FileOutputStream fos = new FileOutputStream(\"destination.txt\");\n        byte&#91;] buffer = new byte&#91;1024];\n        int length;\n        while ((length = fis.read(buffer)) != -1) {\n            fos.write(buffer, 0, length);\n        }\n        fis.close();\n        fos.close();\n    }\n}<\/code><\/pre>\n\n\n\n<p>2.<strong>\u6587\u4ef6\u62f7\u8d1d<\/strong>\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code has-white-color has-black-background-color has-text-color has-background has-link-color wp-elements-dcd6c974dbc0d5d43a78c9ded52ccb0f\"><code>import java.io.*;\n\npublic class ReadFileByLine {\n    public static void main(String&#91;] args) throws IOException {\n        BufferedReader reader = new BufferedReader(new FileReader(\"example.txt\"));\n        String line;\n        while ((line = reader.readLine()) != null) {\n            System.out.println(line);\n        }\n        reader.close();\n    }\n}<\/code><\/pre>\n\n\n\n<p>3.<strong>\u5bf9\u8c61\u7684\u5e8f\u5217\u5316\u548c\u53cd\u5e8f\u5217\u5316<\/strong>\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code has-white-color has-black-background-color has-text-color has-background has-link-color wp-elements-0e6cb0f4317219f2f37152de2810e92d\"><code>import java.io.*;\n\npublic class SerializeDemo {\n    public static void main(String&#91;] args) throws IOException, ClassNotFoundException {\n        \/\/ \u5e8f\u5217\u5316\n        ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream(\"object.dat\"));\n        oos.writeObject(new Person(\"John\", 30));\n        oos.close();\n\n        \/\/ \u53cd\u5e8f\u5217\u5316\n        ObjectInputStream ois = new ObjectInputStream(new FileInputStream(\"object.dat\"));\n        Person person = (Person) ois.readObject();\n        ois.close();\n        System.out.println(person);\n    }\n}\n\nclass Person implements Serializable {\n    private String name;\n    private int age;\n\n    public Person(String name, int age) {\n        this.name = name;\n        this.age = age;\n    }\n\n    @Override\n    public String toString() {\n        return \"Person{name='\" + name + \"', age=\" + age + \"}\";\n    }\n}<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u4e00\u3001IO\u57fa\u672c\u6982\u5ff5 IO\u662fInput\uff08\u8f93\u5165\uff09\u548cOutput\uff08\u8f93\u51fa\uff09\u7684\u7f29\u5199\uff0c\u4e3b\u8981\u6307\u5728\u7a0b\u5e8f\u8fd0\u884c\u8fc7\u7a0b\u4e2d\uff0c\u8fdb\u884c\u6570\u636e\u7684\u8f93\u5165 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[59],"tags":[16],"class_list":["post-3288","post","type-post","status-publish","format-standard","hentry","category-59","tag-java"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.8 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Java IO\u6d41\u8be6\u89e3<\/title>\n<meta name=\"description\" content=\"IO\u662fInput\uff08\u8f93\u5165\uff09\u548cOutput\uff08\u8f93\u51fa\uff09\u7684\u7f29\u5199\uff0c\u4e3b\u8981\u6307\u5728\u7a0b\u5e8f\u8fd0\u884c\u8fc7\u7a0b\u4e2d\uff0c\u8fdb\u884c\u6570\u636e\u7684\u8f93\u5165\u548c\u8f93\u51fa\u64cd\u4f5c\u3002Java\u7684IO\u6d41\u662fJava\u8f93\u5165\u8f93\u51fa\u7cfb\u7edf\u7684\u6838\u5fc3\uff0c\u7528\u4e8e\u8bfb\u53d6\u548c\u5199\u5165\u6570\u636e\u3002\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.talktop.cn\/?p=3288\" \/>\n<script type=\"application\/ld+json\" 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