{"id":64,"date":"2013-03-29T14:02:38","date_gmt":"2013-03-29T05:02:38","guid":{"rendered":"https:\/\/www.united-bears.co.jp\/blog\/?p=64"},"modified":"2013-03-29T14:02:38","modified_gmt":"2013-03-29T05:02:38","slug":"java-%e3%81%8b%e3%82%89-os-%e3%81%ae%e3%83%97%e3%83%ad%e3%82%bb%e3%82%b9%e3%81%ae%e8%b5%b7%e5%8b%95","status":"publish","type":"post","link":"https:\/\/www.united-bears.co.jp\/blog\/archives\/64","title":{"rendered":"Java \u304b\u3089 OS \u306e\u30d7\u30ed\u30bb\u30b9\u306e\u8d77\u52d5"},"content":{"rendered":"<p>Java \u304b\u3089 OS \u306e\u30d7\u30ed\u30bb\u30b9\u3092\u8d77\u52d5\u3059\u308b\u969b\u306b\u3001\u6e21\u3057\u3066\u3044\u308b\u5f15\u6570\u7b49\u304c\u5b89\u5168\u3067\u3042\u308b\u304b\u3069\u3046\u304b\u78ba\u8a8d\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u304b\u30c1\u30a7\u30c3\u30af\u3057\u3066\u307f\u305f\u3002<\/p>\n<p>(1)Runtime \u30af\u30e9\u30b9\u304b\u3089 Process \u3092\u751f\u6210\u3057\u3066\u5b9f\u884c\u3057\u3066\u307f\u308b\u3002<\/p>\n<pre>public class Main {\r\n    public static void main(String[] args) throws Exception {\r\n        Runtime r = Runtime.getRuntime();\r\n        Process p = r.exec(\"cmd.exe \/c dir | grep \\\\.\");\r\n\r\n        byte[] b = new byte[8192];\r\n        int n;\r\n\r\n        FileOutputStream stdout = new FileOutputStream(\"stdout.txt\");\r\n        BufferedInputStream binstd = new BufferedInputStream(p.getInputStream());\r\n        while ((n = binstd.read(b)) != -1) {\r\n            stdout.write(b, 0, n);\r\n        }\r\n        stdout.close();\r\n\r\n        FileOutputStream stderr = new FileOutputStream(\"stderr.txt\");\r\n        BufferedInputStream binerr = new BufferedInputStream(p.getErrorStream());\r\n        while ((n = binerr.read(b)) != -1) {\r\n            stderr.write(b, 0, n);\r\n        }\r\n        stderr.close();\r\n\r\n    }\r\n}<\/pre>\n<p>\u7d50\u679c\u3001\u300c.\u300d\u3092\u542b\u3080\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3060\u3051\u304c stdout.txt \u306b\u8868\u793a\u3055\u308c\u305f\u3002<\/p>\n<p>(2)ProcessBuilder\u3092\u751f\u6210\u3057\u3066\u3001command \u3067\u8907\u6570\u306e\u5f15\u6570\u3092\u6e21\u3057\u3066\u307f\u308b\u3002<\/p>\n<pre>public class Main {\r\n    public static void main(String[] args) throws Exception {\r\n        ProcessBuilder pb = new ProcessBuilder();\r\n\r\n        pb.command(\"cmd.exe\", \"\/c\", \"dir\", \"|\", \"grep\", \"\\\\.\");\r\n        pb.redirectOutput(new File(\"stdout.txt\"));\r\n        pb.redirectError(new File(\"stderr.txt\"));\r\n\r\n        pb.start();\r\n\r\n    }\r\n}<\/pre>\n<p>\u7d50\u679c\u3001\u300c.\u300d\u3092\u542b\u3080\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3060\u3051\u304c stdout.txt \u306b\u8868\u793a\u3055\u308c\u305f\u3002<\/p>\n<p>(3)\u7d50\u8ad6<br \/>\n\u30d1\u30a4\u30d7\u304c\u89e3\u91c8\u3055\u308c\u3066\u3057\u307e\u3046\u305f\u3081\u3001\u30d7\u30ed\u30bb\u30b9\u3092\u751f\u6210\u3059\u308b\u3068\u304d\u306f\u3001\u30b3\u30de\u30f3\u30c9\u6587\u5b57\u5217\u3092\u30c1\u30a7\u30c3\u30af\u3057\u306a\u3051\u308c\u3070\u3044\u3051\u306a\u3044\u3088\u3046\u3060\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Java \u304b\u3089 OS \u306e\u30d7\u30ed\u30bb\u30b9\u3092\u8d77\u52d5\u3059\u308b\u969b\u306b\u3001\u6e21\u3057\u3066\u3044\u308b\u5f15\u6570\u7b49\u304c\u5b89\u5168\u3067\u3042\u308b\u304b\u3069\u3046\u304b\u78ba\u8a8d\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u304b\u30c1\u30a7\u30c3\u30af\u3057\u3066\u307f\u305f\u3002 (1)Runtime \u30af\u30e9\u30b9\u304b\u3089 Process \u3092\u751f\u6210\u3057\u3066\u5b9f\u884c\u3057\u3066\u307f\u308b\u3002 public cla [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14,13],"tags":[],"class_list":["post-64","post","type-post","status-publish","format-standard","hentry","category-java","category-security"],"_links":{"self":[{"href":"https:\/\/www.united-bears.co.jp\/blog\/wp-json\/wp\/v2\/posts\/64","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.united-bears.co.jp\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.united-bears.co.jp\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.united-bears.co.jp\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.united-bears.co.jp\/blog\/wp-json\/wp\/v2\/comments?post=64"}],"version-history":[{"count":3,"href":"https:\/\/www.united-bears.co.jp\/blog\/wp-json\/wp\/v2\/posts\/64\/revisions"}],"predecessor-version":[{"id":67,"href":"https:\/\/www.united-bears.co.jp\/blog\/wp-json\/wp\/v2\/posts\/64\/revisions\/67"}],"wp:attachment":[{"href":"https:\/\/www.united-bears.co.jp\/blog\/wp-json\/wp\/v2\/media?parent=64"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.united-bears.co.jp\/blog\/wp-json\/wp\/v2\/categories?post=64"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.united-bears.co.jp\/blog\/wp-json\/wp\/v2\/tags?post=64"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}