{"id":1560,"date":"2024-11-26T11:13:17","date_gmt":"2024-11-26T03:13:17","guid":{"rendered":"https:\/\/note.ui11.cc\/?p=1560"},"modified":"2024-11-26T11:49:04","modified_gmt":"2024-11-26T03:49:04","slug":"fileio%e6%b5%81","status":"publish","type":"post","link":"https:\/\/note.ui11.cc\/index.php\/2024\/11\/26\/fileio%e6%b5%81\/","title":{"rendered":"File\u7c7b"},"content":{"rendered":"\n

\u76ee\u524d\u5b58\u50a8\u6570\u636e\u7684\u65b9\u6848\uff1a<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

\u7f3a\u70b9\uff1a\u4ed6\u4eec\u8bb0\u4f4f\u5f97\u6570\u636e\u5728\u65ad\u70b9\uff0c\u6216\u8005\u7a0b\u5e8f\u7ec8\u6b62\u65f6\u4f1a\u4e22\u5931<\/strong><\/p>\n\n\n\n

\u5982\u4f55\u628a\u6570\u636e\u957f\u4e45\u7684\u5b58\u50a8\u8d77\u6765\uff1f<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

\u8ba4\u8bc6File\u7c7b<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

\u6ce8\u610f\uff1aFile\u7c7b\u53ea\u80fd\u5bf9\u6587\u4ef6\u672c\u8eab\u8fdb\u884c\u64cd\u4f5c\uff0c\u4e0d\u80fd\u8bfb\u5199\u6587\u4ef6\u4e2d\u7684\u6570\u636e<\/strong><\/p>\n\n\n\n

IO\u6d41\uff1a<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

\u521b\u5efaFile\u7c7b\u7684\u5bf9\u8c61<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n
package com.file.test;\n\nimport java.io.File;\n\npublic class FielTest1 {\n    public static void main(String[] args) {\n        \/\/\u521b\u5efa\u4e00\u4e2aFILE\u5bf9\u8c61\uff0c\u6307\u4ee3\u67d0\u4e2a\u5177\u4f53\u6587\u4ef6\n        \/\/File file = new File(\"D:\\\\\u8d44\u6e90\u56fe\u7247\\\\_20240612225653.jpg\");\n        \/\/\u53e6\u4e00\u79cd\u5206\u9694\u7b26\uff0c\u7528File.separator\u4ed6\u4f1a\u6839\u636e\u4f60\u7684\u7cfb\u7edf\u6765\u5224\u522b\u4f7f\u7528\u90a3\u79cd\u5206\u9694\u7b26\uff0c\u8de8\u5e73\u53f0\n        File file = new File(\"D:\"+File.separator+\"\u8d44\u6e90\u56fe\u7247\"+File.separator+\"_20240612225653.jpg\");\n        String name = file.getName();\n        long length = file.length();\n        String path = file.getPath();\n        System.out.println(\"\u8fd9\u5f20\u56fe\u7247\u7684\u540d\u5b57\u4e3a\"+name);\/\/\u6587\u4ef6\u540d\u5b57\n        System.out.println(\"\u8fd9\u5f20\u56fe\u7247\u7684\u5927\u5c0f\u4e3a\"+length);\/\/\u6587\u4ef6\u5927\u5c0f\n        System.out.println(\"\u6587\u4ef6\u8def\u5f84\u4e3a\"+path);\n        \/\/File\u7c7b\u8fd8\u53ef\u4ee5\u6307\u5411\u6587\u4ef6\u5939\n        File file1 = new File(\"D:\\\\\u8d44\u6e90\u56fe\u7247\");\n        long length1 = file1.length();\n        System.out.println(\"\u6587\u4ef6\u5939\u7684\u5927\u5c0f\u4e3a\"+length1);\/\/\u8f93\u51fa\u4e3a40960\u5176\u5b9e\u8fd9\u4e2a\u5927\u5c0f\u662f\u6587\u4ef6\u5939\u672c\u8eab\u7684\u5927\u5c0f\u800c\u4e0d\u662f\u6587\u4ef6\u5939\u91cc\u9762\u6240\u6709\u6587\u4ef6\u7684\u5927\u5c0f\n        \/\/File\u5bf9\u8c61\u53ef\u4ee5\u6307\u5411\u4e00\u4e2a\u4e0d\u5b58\u5728\u7684\u6587\u4ef6\u8def\u5f84\n        File file2 = new File(\"D:\\\\\u8d44\u6e90\u56fe\u7247\\\\\u4e3b\u56fe\\\\\u8fd9\u662f\u4e00\u4e2a\u672a\u77e5\u6587\u672c.txt\");\n        System.out.println(\"\u672a\u77e5\u6587\u4ef6\u7684\u5927\u5c0f\"+file2.length());\n        \/\/\u5224\u65ad\u6587\u4ef6\u662f\u5426\u5b58\u5728\n        boolean exists = file2.exists();\n        System.out.println(\"\u6587\u4ef6\u5b58\u5728\u7684\u72b6\u6001\u662f\"+exists);\n\n        \/\/\u6211\u73b0\u5728\u8981\u5b9a\u4f4d\u7684\u6587\u4ef6\u662f\u5728\u6a21\u5757\u4e2d\uff0c\u90a3\u5e94\u8be5\u5982\u4f55\u5b9a\u4f4d\uff1f\n        \/\/\u7edd\u5bf9\u8def\u5f84\uff0c\u5e26\u76d8\u7b26\u7684\u8def\u5f84\n        \/\/File file3 = new File(\"D:\\\\VScode\\\\ServletStudy\\\\ServletParent\\\\FileStudy\\\\src\\\\main\\\\java\\\\com\\\\file\\\\test\\\\it.txt\");\n        \/\/\u76f8\u5bf9\u8def\u5f84:\u4e0d\u5e26\u76d8\u7b26\uff0c\u9ed8\u8ba4\u662f\u76f4\u63a5\u53bb\u5de5\u7a0b\u4e0b\u627e\u6587\u4ef6\u7684\n        File file3 = new File(\"FileStudy\\\\src\\\\main\\\\java\\\\com\\\\file\\\\test\\\\it.txt\");\/\/\u76f8\u5bf9\u8def\u5f84\u4ece\u6a21\u5757\u540d\u5f00\u59cb\n        System.out.println(\"\u6211\u4eec\u65b0\u521b\u5efa\u7684txt\u6587\u4ef6\u5927\u5c0f\u4e3a\"+file3.length());\n    }\n}\n<\/code><\/pre>\n\n\n\n
\u8fd0\u884c\u7ed3\u679c\uff1a<\/p>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
File\u7c7b\u5bf9\u8c61\u53ef\u4ee5\u4ee3\u8868\u6587\u4ef6\uff0c\u4e5f\u53ef\u4ee3\u8868\u6587\u4ef6\u5939<\/p>\n\n\n\n
\u53ef\u4ee5\u4ee3\u8868\u5df2\u7ecf\u5b58\u5728\u7684\u6587\u4ef6\u4e5f\u53ef\u4ee5\u4ee3\u8868\u4e0d\u5b58\u5728\u7684\u56fe\u7247<\/p>\n\n\n\n
\u5982\u679c\u4ee3\u8868\u6587\u4ef6\u5939\u90a3\u4e48\u5b83\u4ee3\u8868\u7684\u662f\u8fd9\u4e2a\u6587\u4ef6\u5939\u7684\u5927\u5c0f\u800c\u4e0d\u662f\u8fd9\u4e2a\u6587\u4ef6\u5939\u91cc\u9762\u7684\u6240\u6709\u6587\u4ef6\u7684\u5927\u5c0f<\/p>\n\n\n\n
\u8fd8\u6709\u5c31\u662f\u76f8\u5bf9\u8def\u5f84\u4e0e\u7edd\u5bf9\u8def\u5f84\uff0c\u5728\u6a21\u5757\u4e0b\u7684\u6587\u4ef6\u7528\u5f97\u662f\u76f8\u5bf9\u8def\u5f84\uff0c\u76f8\u5bf9\u8def\u5f84\u662f\u4ece\u6a21\u5757\u90a3\u5f00\u59cb\u7684<\/p>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
\u4ee5\u53ca\u6587\u4ef6\u8def\u5f84\u5206\u9694\u7b26<\/p>\n\n\n\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
\u76ee\u524d\u5b58\u50a8\u6570\u636e\u7684\u65b9\u6848\uff1a \u7f3a\u70b9\uff1a\u4ed6\u4eec\u8bb0\u4f4f\u5f97\u6570\u636e\u5728\u65ad\u70b9\uff0c\u6216\u8005\u7a0b\u5e8f\u7ec8\u6b62\u65f6\u4f1a\u4e22\u5931 \u5982\u4f55\u628a\u6570\u636e\u957f\u4e45\u7684\u5b58\u50a8\u8d77\u6765\uff1f \u8ba4\u8bc6Fil […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[24],"tags":[],"class_list":["post-1560","post","type-post","status-publish","format-standard","hentry","category-fileio"],"_links":{"self":[{"href":"https:\/\/note.ui11.cc\/index.php\/wp-json\/wp\/v2\/posts\/1560","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/note.ui11.cc\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/note.ui11.cc\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/note.ui11.cc\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/note.ui11.cc\/index.php\/wp-json\/wp\/v2\/comments?post=1560"}],"version-history":[{"count":2,"href":"https:\/\/note.ui11.cc\/index.php\/wp-json\/wp\/v2\/posts\/1560\/revisions"}],"predecessor-version":[{"id":1573,"href":"https:\/\/note.ui11.cc\/index.php\/wp-json\/wp\/v2\/posts\/1560\/revisions\/1573"}],"wp:attachment":[{"href":"https:\/\/note.ui11.cc\/index.php\/wp-json\/wp\/v2\/media?parent=1560"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/note.ui11.cc\/index.php\/wp-json\/wp\/v2\/categories?post=1560"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/note.ui11.cc\/index.php\/wp-json\/wp\/v2\/tags?post=1560"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}