{"id":37117,"date":"2024-11-26T16:10:08","date_gmt":"2024-11-26T08:10:08","guid":{"rendered":"https:\/\/fwq.ai\/blog\/37117\/"},"modified":"2024-11-26T16:10:08","modified_gmt":"2024-11-26T08:10:08","slug":"int-%e6%80%8e%e4%b9%88%e8%bd%ac%e6%88%90byte%e6%95%b0%e7%bb%84-java","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/37117\/","title":{"rendered":"int \u600e\u4e48\u8f6c\u6210byte\u6570\u7ec4 java"},"content":{"rendered":"<blockquote><p>\n  \u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u4e24\u79cd\u65b9\u6cd5\u5c06 int \u8f6c\u6362\u4e3a\u5b57\u8282\u6570\u7ec4\uff1a\u4f7f\u7528 bytearrayoutputstream\uff1a\u5c06\u6574\u6570\u5199\u5165 bytearrayoutputstream\uff0c\u5e76\u5c06\u5176\u8f6c\u6362\u4e3a\u5b57\u8282\u6570\u7ec4\u3002\u4f7f\u7528 bytebuffer\uff1a\u5206\u914d\u4e00\u4e2a 4 \u5b57\u8282\u7684 bytebuffer\uff0c\u5e76\u5c06\u5176\u5199\u5165\u6574\u6570\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/13\/2024111301332227265.jpg\" class=\"aligncenter\" title=\"int \u600e\u4e48\u8f6c\u6210byte\u6570\u7ec4 java\u63d2\u56fe\" alt=\"int \u600e\u4e48\u8f6c\u6210byte\u6570\u7ec4 java\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u5c06 int \u7c7b\u578b\u8f6c\u6362\u4e3a\u5b57\u8282\u6570\u7ec4\uff08Java\uff09<\/strong><\/p>\n<p>\u5c06 int \u7c7b\u578b\u8f6c\u6362\u4e3a\u5b57\u8282\u6570\u7ec4\u662f\u4e00\u4e2a\u5e38\u89c1\u7684\u4efb\u52a1\uff0c\u7279\u522b\u662f\u5728\u548c\u6570\u636e\u5904\u7406\u4e2d\u3002Java \u63d0\u4f9b\u4e86\u7b80\u5355\u7684\u65b9\u6cd5\u6765\u5b9e\u73b0\u6b64\u8f6c\u6362\u3002<\/p>\n<p><strong>\u65b9\u6cd5 1\uff1a\u4f7f\u7528 ByteOutputStream<\/strong><\/p>\n<pre>import java.io.ByteArrayOutputStream;\nimport java.io.IOException;\n\npublic class IntToByteArray {\n\n    public static byte[] intToBytes(int value) {\n        ByteArrayOutputStream out = new ByteArrayOutputStream();\n        try {\n            out.write(value &gt;&gt; 24);\n            out.write(value &gt;&gt; 16);\n            out.write(value &gt;&gt; 8);\n            out.write(value);\n        } catch (IOException e) {\n            e.printStackTrace();\n        }\n        return out.toByteArray();\n    }\n\n    public static void main(String[] args) {\n        int num = 123456;\n        byte[] bytes = intToBytes(num);\n        System.out.println(\"\u5b57\u8282\u6570\u7ec4\uff1a\");\n        for (byte b : bytes) {\n            System.out.print(b + \" \");\n        }\n    }\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u8fd9\u4e2a\u65b9\u6cd5\u901a\u8fc7 ByteArrayOutputStream \u6765\u5199\u5165\u4e00\u4e2a 4 \u5b57\u8282\u7684\u6574\u6570\uff0c\u5e76\u5c06\u5176\u8f6c\u6362\u4e3a\u5b57\u8282\u6570\u7ec4\u3002<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<p><strong>\u65b9\u6cd5 2\uff1a\u4f7f\u7528 ByteBuffer<\/strong><\/p>\n<pre>import java.nio.ByteBuffer;\n\npublic class IntToByteArray {\n\n    public static byte[] intToBytes(int value) {\n        ByteBuffer buff = ByteBuffer.allocate(4);\n        buff.putInt(value);\n        return buff.array();\n    }\n\n    public static void main(String[] args) {\n        int num = 123456;\n        byte[] bytes = intToBytes(num);\n        System.out.println(\"\u5b57\u8282\u6570\u7ec4\uff1a\");\n        for (byte b : bytes) {\n            System.out.print(b + \" \");\n        }\n    }\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u8fd9\u4e2a\u65b9\u6cd5\u4f7f\u7528 ByteBuffer \u6765\u5206\u914d\u4e00\u4e2a 4 \u5b57\u8282\u7684\u7f13\u51b2\u533a\uff0c\u5e76\u5c06\u5176\u5199\u5165\u4e00\u4e2a\u6574\u6570\u3002<\/p>\n<p><strong>\u7ed3\u679c\uff1a<\/strong><\/p>\n<p>\u4e0a\u8ff0\u4ee3\u7801\u5c06\u8f93\u51fa\u4ee5\u4e0b\u5b57\u8282\u6570\u7ec4\uff0c\u8868\u793a\u6574\u6570 123456\uff1a<\/p>\n<pre>12 0 -72 -128<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fint \u600e\u4e48\u8f6c\u6210byte\u6570\u7ec4 java\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>\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u4e24\u79cd\u65b9\u6cd5\u5c06 int \u8f6c\u6362\u4e3a\u5b57\u8282\u6570\u7ec4\uff1a\u4f7f\u7528 bytearrayoutputstream\uff1a\u5c06\u6574\u6570\u5199\u5165 bytearrayoutputstream\uff0c\u5e76\u5c06\u5176\u8f6c\u6362\u4e3a\u5b57\u8282\u6570\u7ec4\u3002\u4f7f\u7528 bytebuffer\uff1a\u5206\u914d\u4e00\u4e2a 4 \u5b57\u8282\u7684 bytebuffer\uff0c\u5e76\u5c06\u5176\u5199\u5165\u6574\u6570\u3002 \u5982\u4f55\u5c06 int \u7c7b\u578b\u8f6c\u6362\u4e3a\u5b57\u8282\u6570\u7ec4\uff08Java\uff09 \u5c06 int \u7c7b\u578b\u8f6c\u6362\u4e3a\u5b57\u8282\u6570\u7ec4\u662f\u4e00\u4e2a\u5e38\u89c1\u7684\u4efb\u52a1\uff0c\u7279\u522b\u662f\u5728\u548c\u6570\u636e\u5904\u7406\u4e2d\u3002Java \u63d0\u4f9b\u4e86\u7b80\u5355\u7684\u65b9\u6cd5\u6765\u5b9e\u73b0\u6b64\u8f6c\u6362\u3002 \u65b9\u6cd5 1\uff1a\u4f7f\u7528 ByteOutputStream import java.io.ByteArrayOutputStream; import java.io.IOException; public class IntToByteArray { public static byte[] intToBytes(int value) { ByteArrayOutputStream out = new ByteArrayOutputStream(); try { out.write(value &gt;&gt; 24); out.write(value &gt;&gt; 16); out.write(value &gt;&gt; 8); out.write(value); } catch (IOException e) { [&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-37117","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/37117","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=37117"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/37117\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=37117"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=37117"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=37117"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}