{"id":37139,"date":"2024-11-26T16:43:03","date_gmt":"2024-11-26T08:43:03","guid":{"rendered":"https:\/\/fwq.ai\/blog\/37139\/"},"modified":"2024-11-26T16:43:03","modified_gmt":"2024-11-26T08:43:03","slug":"java%e6%80%8e%e4%b9%88%e8%ae%a9byte%e6%95%b0%e7%bb%84%e8%bd%ac%e6%8d%a2%e4%b8%bain%e6%95%b0%e7%bb%84","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/37139\/","title":{"rendered":"java\u600e\u4e48\u8ba9byte\u6570\u7ec4\u8f6c\u6362\u4e3ain\u6570\u7ec4"},"content":{"rendered":"<blockquote><p>\n  3 \u79cd\u65b9\u6cd5\u53ef\u5c06 java \u5b57\u8282\u6570\u7ec4\u8f6c\u6362\u4e3a int \u6570\u7ec4\uff1a\u4f7f\u7528 bytebuffer \u5c06\u5b57\u8282\u6570\u7ec4\u8f6c\u6362\u4e3a int \u6570\u7ec4\u3002\u4f7f\u7528 datainputstream \u5c06\u5b57\u8282\u6570\u7ec4\u5305\u88c5\u4e3a\u8f93\u5165\u6d41\uff0c\u7136\u540e\u4ece\u4e2d\u8bfb\u53d6 int \u503c\u3002\u5982\u679c\u5b57\u8282\u6570\u7ec4\u957f\u5ea6\u4e3a 4 \u7684\u500d\u6570\uff0c\u53ef\u624b\u52a8\u8f6c\u6362\u5b57\u8282\u4e3a int \u503c\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/13\/2024111301571970898.jpg\" class=\"aligncenter\" title=\"java\u600e\u4e48\u8ba9byte\u6570\u7ec4\u8f6c\u6362\u4e3ain\u6570\u7ec4\u63d2\u56fe\" alt=\"java\u600e\u4e48\u8ba9byte\u6570\u7ec4\u8f6c\u6362\u4e3ain\u6570\u7ec4\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u5c06 Java \u5b57\u8282\u6570\u7ec4\u8f6c\u6362\u4e3a int \u6570\u7ec4<\/strong><\/p>\n<p><strong>\u65b9\u6cd5 1\uff1a\u4f7f\u7528 ByteBuffer<\/strong><\/p>\n<p>ByteBuffer \u662f Java \u4e2d\u7528\u4e8e\u5904\u7406\u539f\u59cb\u6570\u636e\u7684\u7c7b\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u5b83\u6765\u5c06\u5b57\u8282\u6570\u7ec4\u8f6c\u6362\u4e3a int \u6570\u7ec4\uff1a<\/p>\n<pre>byte[] bytes = {1, 2, 3, 4, 5};\nByteBuffer buffer = ByteBuffer.wrap(bytes);\n\nint[] ints = new int[bytes.length \/ 4];\nbuffer.asIntBuffer().get(ints);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u65b9\u6cd5 2\uff1a\u4f7f\u7528 DataInputStream<\/strong><\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<p>DataInputStream \u63d0\u4f9b\u4e86\u4e00\u79cd\u5c06\u57fa\u672c\u6570\u636e\u7c7b\u578b\u4ece\u8f93\u5165\u6d41\u4e2d\u8bfb\u53d6\u4e3a\u539f\u59cb\u6570\u636e\u7c7b\u578b\u7684\u65b9\u6cd5\u3002\u6211\u4eec\u53ef\u4ee5\u5c06\u5b57\u8282\u6570\u7ec4\u5305\u88c5\u4e3a\u8f93\u5165\u6d41\uff0c\u7136\u540e\u4f7f\u7528 DataInputStream \u4ece\u4e2d\u8bfb\u53d6 int \u503c\uff1a<\/p>\n<pre>byte[] bytes = {1, 2, 3, 4, 5};\nInputStream is = new ByteArrayInputStream(bytes);\nDataInputStream dis = new DataInputStream(is);\n\nint[] ints = new int[bytes.length \/ 4];\nfor (int i = 0; i &lt; ints.length; i++) {\n    ints[i] = dis.readInt();\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u65b9\u6cd5 3\uff1a\u624b\u52a8\u8f6c\u6362<\/strong><\/p>\n<p>\u5982\u679c\u5b57\u8282\u6570\u7ec4\u7684\u957f\u5ea6\u662f 4 \u7684\u500d\u6570\uff0c\u6211\u4eec\u53ef\u4ee5\u624b\u52a8\u5c06\u5b57\u8282\u8f6c\u6362\u4e3a int \u503c\uff1a<\/p>\n<pre>byte[] bytes = {1, 2, 3, 4, 5, 6, 7, 8};\nint[] ints = new int[bytes.length \/ 4];\n\nfor (int i = 0; i &lt; bytes.length \/ 4; i++) {\n    ints[i] = (bytes[4 * i] &lt;&lt; 24) | (bytes[4 * i + 1] &lt;&lt; 16) | (bytes[4 * i + 2] &lt;&lt; 8) | bytes[4 * i + 3];\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u6ce8\u610f\uff1a<\/strong><\/p>\n<ul>\n<li>\u5982\u679c\u5b57\u8282\u6570\u7ec4\u7684\u957f\u5ea6\u4e0d\u662f 4 \u7684\u500d\u6570\uff0c\u5219\u4f7f\u7528\u4ee5\u4e0a\u65b9\u6cd5\u65f6\u4f1a\u629b\u51fa\u5f02\u5e38\u3002<\/li>\n<li>\u5bf9\u4e8e\u5927\u578b\u5b57\u8282\u6570\u7ec4\uff0c\u4f7f\u7528 ByteBuffer \u7684\u65b9\u6cd5\u53ef\u80fd\u66f4\u6709\u6548\u7387\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u8ba9byte\u6570\u7ec4\u8f6c\u6362\u4e3ain\u6570\u7ec4\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>3 \u79cd\u65b9\u6cd5\u53ef\u5c06 java \u5b57\u8282\u6570\u7ec4\u8f6c\u6362\u4e3a int \u6570\u7ec4\uff1a\u4f7f\u7528 bytebuffer \u5c06\u5b57\u8282\u6570\u7ec4\u8f6c\u6362\u4e3a int \u6570\u7ec4\u3002\u4f7f\u7528 datainputstream \u5c06\u5b57\u8282\u6570\u7ec4\u5305\u88c5\u4e3a\u8f93\u5165\u6d41\uff0c\u7136\u540e\u4ece\u4e2d\u8bfb\u53d6 int \u503c\u3002\u5982\u679c\u5b57\u8282\u6570\u7ec4\u957f\u5ea6\u4e3a 4 \u7684\u500d\u6570\uff0c\u53ef\u624b\u52a8\u8f6c\u6362\u5b57\u8282\u4e3a int \u503c\u3002 \u5982\u4f55\u5c06 Java \u5b57\u8282\u6570\u7ec4\u8f6c\u6362\u4e3a int \u6570\u7ec4 \u65b9\u6cd5 1\uff1a\u4f7f\u7528 ByteBuffer ByteBuffer \u662f Java \u4e2d\u7528\u4e8e\u5904\u7406\u539f\u59cb\u6570\u636e\u7684\u7c7b\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u5b83\u6765\u5c06\u5b57\u8282\u6570\u7ec4\u8f6c\u6362\u4e3a int \u6570\u7ec4\uff1a byte[] bytes = {1, 2, 3, 4, 5}; ByteBuffer buffer = ByteBuffer.wrap(bytes); int[] ints = new int[bytes.length \/ 4]; buffer.asIntBuffer().get(ints); \u767b\u5f55\u540e\u590d\u5236 \u65b9\u6cd5 2\uff1a\u4f7f\u7528 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-37139","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/37139","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=37139"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/37139\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=37139"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=37139"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=37139"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}