{"id":641,"date":"2021-02-07T23:53:13","date_gmt":"2021-02-07T15:53:13","guid":{"rendered":"https:\/\/www.52dixiaowo.com\/java\/?p=641"},"modified":"2021-02-08T00:11:05","modified_gmt":"2021-02-07T16:11:05","slug":"fileinputstream-%e5%ad%97%e8%8a%82%e8%be%93%e5%85%a5%e6%b5%81","status":"publish","type":"post","link":"https:\/\/www.52dixiaowo.com\/java\/post-641.html","title":{"rendered":"FileInputStream \u5b57\u8282\u8f93\u5165\u6d41"},"content":{"rendered":"\n<p>FileInputStream \u662f\u6587\u4ef6\u5b57\u8282\u8f93\u5165\u6d41\uff0c\u53ef\u4ee5\u4ece\u786c\u76d8\u6587\u4ef6\u8bfb\u53d6\u5185\u5bb9<\/p>\n\n\n\n<h5>1.\u5bfc\u5305<\/h5>\n\n\n\n<pre class=\"wp-block-code\"><code>import java.io.FileInputStream;<\/code><\/pre>\n\n\n\n<h5>2.\u6784\u9020\u65b9\u6cd5<\/h5>\n\n\n\n<p>\u6b64\u7c7b\u6784\u9020\u53ea\u6709\u4e00\u4e2a\u53c2\u6570\uff0c\u8be5\u53c2\u6570\u67092\u4e2a\u53ef\u9009\uff0c\u8981\u4e48\u662f\u4f4d\u7f6e\u5b57\u7b26\u4e32\uff0c\u8981\u4e48File<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>FileInputStream fis = new FileInputStream(\"D:\\\\a.txt\");\nFileInputStream fis2 = new FileInputStream(new File(\"D:\\\\b.txt\"));<\/code><\/pre>\n\n\n\n<h5>3.\u65b9\u6cd5<\/h5>\n\n\n\n<p>1.\u8bfb\u53d6\u4e00\u4e2a\u5b57\u8282\uff0c\u4f1a\u628a\u8bfb\u53d6\u5230\u7684\u6587\u5b57\u8f6c\u6362\u4e3a ASCII (\u4e8c\u8fdb\u5236\u7f16\u7801)\uff0c\u82e5\u5230\u7ed3\u5c3e\u8fd4\u56de -1<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>int b = fis.read();<\/code><\/pre>\n\n\n\n<p>2.\u5faa\u73af\u83b7\u53d6\u6240\u6709\u5185\u5bb9\uff0c\u5e76\u628a\u4e8c\u8fdb\u5236\u8f6c\u6362\u4e3a\u5b57\u7b26\uff08\u4e2d\u6587\u4f1a\u4e71\u7801\uff09<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>int len = 0;\nwhile((len = fis.read())!=-1) {\n\tSystem.out.print((char)len);\n}<\/code><\/pre>\n\n\n\n<p>3.\u4e00\u6b21\u83b7\u53d6\u591a\u4e2a\u5b57\u8282\uff08\u80fd\u63d0\u9ad8\u6548\u7387\uff09<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>byte&#91;] b2 = new byte&#91;1024];\nint len2 = 0;\nwhile((len2=fis.read(b2))!=-1){\n  System.out.println(new String(b2));\n}\n\/\/\u7406\u8bba\u4e0a\u53ef\u4ee5\u8bfb\u53d6\u4e2d\u6587\uff0c\u4f46\u5b9e\u9645\u4e0a\u5f3a\u70c8\u4e0d\u5efa\u8bae\u4f7f\u7528\uff0c\u975e\u5e38\u5bb9\u6613\u62a5\u9519<\/code><\/pre>\n\n\n\n<p>4.\u5173\u95ed\u6d41<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/\u901a\u5e38\u5728\u5173\u95ed\u8f93\u51fa\u6d41\u540e\uff0c\u518d\u5173\u95ed\u8f93\u5165\u6d41\uff0c\u786e\u4fdd\u8f93\u51fa\u5b8c\u6bd5\nfis.close();<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>FileInputStream \u662f\u6587\u4ef6\u5b57\u8282\u8f93\u5165\u6d41\uff0c\u53ef\u4ee5\u4ece\u786c\u76d8\u6587\u4ef6\u8bfb\u53d6\u5185\u5bb9 1.\u5bfc\u5305 2.\u6784\u9020\u65b9\u6cd5 \u6b64\u7c7b\u6784\u9020\u53ea\u6709&hellip; <a href=\"https:\/\/www.52dixiaowo.com\/java\/post-641.html\" class=\"more-link\">\u7ee7\u7eed\u9605\u8bfb <span class=\"screen-reader-text\">FileInputStream \u5b57\u8282\u8f93\u5165\u6d41<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[22],"tags":[],"_links":{"self":[{"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/posts\/641"}],"collection":[{"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/comments?post=641"}],"version-history":[{"count":0,"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/posts\/641\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/media?parent=641"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/categories?post=641"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/tags?post=641"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}