{"id":65349,"date":"2025-05-03T10:34:47","date_gmt":"2025-05-03T02:34:47","guid":{"rendered":"https:\/\/fwq.ai\/blog\/65349\/"},"modified":"2025-05-03T10:34:47","modified_gmt":"2025-05-03T02:34:47","slug":"java-byte%e6%95%b0%e7%bb%84-%e6%80%8e%e4%b9%88%e7%94%a8-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/65349\/","title":{"rendered":"java byte\u6570\u7ec4 \u600e\u4e48\u7528"},"content":{"rendered":"<blockquote><p>\n  java \u5b57\u8282\u6570\u7ec4\uff08byte[]\uff09\u7528\u4e8e\u5b58\u50a8\u539f\u59cb\u4e8c\u8fdb\u5236\u6570\u636e\u3002\u521b\u5efa\u5b57\u8282\u6570\u7ec4\u53ef\u4f7f\u7528 new \u5173\u952e\u5b57\u6216\u5b57\u8282\u6570\u7ec4\u5b57\u9762\u91cf\u3002\u5b57\u8282\u6570\u7ec4\u63d0\u4f9b\u65b9\u6cd5\u64cd\u4f5c\u5143\u7d20\uff0c\u5305\u62ec\u83b7\u53d6\u3001\u8bbe\u7f6e\u3001\u83b7\u53d6\u957f\u5ea6\u548c\u904d\u5386\u3002\u5b57\u8282\u6570\u7ec4\u53ef\u4e0e\u5176\u4ed6\u4e8c\u8fdb\u5236\u6570\u636e\u7c7b\u578b\u8f6c\u6362\uff0c\u5982\u5b57\u7b26\u4e32\u3001\u6d41\u7b49\u3002\u5e38\u89c1\u7684\u7528\u6cd5\u5305\u62ec\u7f51\u7edc\u4f20\u8f93\u6570\u636e\u3001\u56fe\u50cf\u5904\u7406\u3001\u52a0\u5bc6\u7f13\u51b2\u533a\u7b49\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/12\/2024111221335898837.jpg\" class=\"aligncenter\" title=\"java byte\u6570\u7ec4 \u600e\u4e48\u7528\u63d2\u56fe\" alt=\"java byte\u6570\u7ec4 \u600e\u4e48\u7528\u63d2\u56fe\" \/><\/p>\n<p><strong>Java \u5b57\u8282\u6570\u7ec4\u8be6\u89e3<\/strong><\/p>\n<p><strong>\u4ec0\u4e48\u662f Java \u5b57\u8282\u6570\u7ec4\uff1f<\/strong><\/p>\n<p>Java \u5b57\u8282\u6570\u7ec4 (byte[]) \u662f\u5b58\u50a8\u539f\u59cb\u4e8c\u8fdb\u5236\u6570\u636e\u7684\u6570\u7ec4\uff0c\u6bcf\u4e2a\u5143\u7d20\u4ee3\u8868\u4e00\u4e2a 8 \u4f4d\u65e0\u7b26\u53f7\u6b63\u6574\u6570\uff080 \u5230 255\uff09\u3002<\/p>\n<p><strong>\u5982\u4f55\u521b\u5efa\u5b57\u8282\u6570\u7ec4\uff1f<\/strong><\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<p>\u6709\u4ee5\u4e0b\u51e0\u79cd\u521b\u5efa\u5b57\u8282\u6570\u7ec4\u7684\u65b9\u6cd5\uff1a<\/p>\n<ul>\n<li>\u4f7f\u7528 new \u5173\u952e\u5b57\u548c\u6570\u7ec4\u7684\u5927\u5c0f\uff0c\u4f8b\u5982\uff1abyte[] bytes = new byte[10];<\/li>\n<li>\u4f7f\u7528 byte[] \u5b57\u9762\u91cf\uff0c\u4f8b\u5982\uff1abyte[] bytes = { 1, 2, 3 };<\/li>\n<li>\u4ece\u73b0\u6709\u5b57\u8282\u6570\u7ec4\u6216\u5176\u4ed6\u4e8c\u8fdb\u5236\u6570\u636e\u6e90\u590d\u5236\uff0c\u4f8b\u5982\uff1abyte[] bytes = sourceArray.clone();<\/li>\n<\/ul>\n<p><strong>\u5b57\u8282\u6570\u7ec4\u64cd\u4f5c<\/strong><\/p>\n<p>\u5b57\u8282\u6570\u7ec4\u63d0\u4f9b\u4e86\u4e00\u7cfb\u5217\u65b9\u6cd5\u6765\u64cd\u4f5c\u548c\u8bbf\u95ee\u5176\u5143\u7d20\uff1a<\/p>\n<ul>\n<li> <strong>\u83b7\u53d6\u5143\u7d20\uff1a<\/strong>\u4f7f\u7528 get() \u65b9\u6cd5\uff0c\u4f8b\u5982\uff1abyte value = bytes[index];<\/li>\n<li> <strong>\u8bbe\u7f6e\u5143\u7d20\uff1a<\/strong>\u4f7f\u7528 set() \u65b9\u6cd5\uff0c\u4f8b\u5982\uff1abytes[index] = value;<\/li>\n<li> <strong>\u957f\u5ea6\uff1a<\/strong>\u4f7f\u7528 length \u5c5e\u6027\u83b7\u53d6\u5b57\u8282\u6570\u7ec4\u7684\u957f\u5ea6\u3002<\/li>\n<li> <strong>\u904d\u5386\uff1a<\/strong>\u4f7f\u7528 for \u5faa\u73af\u904d\u5386\u6570\u7ec4\uff0c\u4f8b\u5982\uff1afor (byte value : bytes) { &#8230; }<\/li>\n<\/ul>\n<p><strong>\u4e0e\u5176\u4ed6\u4e8c\u8fdb\u5236\u6570\u636e\u7c7b\u578b\u7684\u8f6c\u6362<\/strong><\/p>\n<p>\u5b57\u8282\u6570\u7ec4\u53ef\u4ee5\u5f88\u5bb9\u6613\u5730\u8f6c\u6362\u4e3a\u5176\u4ed6\u4e8c\u8fdb\u5236\u6570\u636e\u7c7b\u578b\uff1a<\/p>\n<ul>\n<li> <strong>String\uff1a<\/strong>\u4f7f\u7528 String(bytes) \u5c06\u5b57\u8282\u6570\u7ec4\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\u3002<\/li>\n<li> <strong>InputStream\/OutputStream\uff1a<\/strong>\u4f7f\u7528 ByteArrayInputStream \u548c ByteArrayOutputStream \u5c06\u5b57\u8282\u6570\u7ec4\u4e0e\u8f93\u5165\u8f93\u51fa\u6d41\u8fde\u63a5\u8d77\u6765\u3002<\/li>\n<\/ul>\n<p><strong>\u5e38\u89c1\u7528\u6cd5<\/strong><\/p>\n<p>\u5b57\u8282\u6570\u7ec4\u5728 Java \u4e2d\u6709\u8bb8\u591a\u5e38\u89c1\u7684\u7528\u6cd5\uff0c\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>\u7528\u4e8e\u7f51\u7edc\u4f20\u8f93\u7684\u6570\u636e\u5b58\u50a8<\/li>\n<li>\u56fe\u50cf\u548c\u97f3\u9891\u7b49\u4e8c\u8fdb\u5236\u6587\u4ef6\u5904\u7406<\/li>\n<li>\u52a0\u5bc6\u548c\u89e3\u5bc6\u6570\u636e\u7684\u7f13\u51b2\u533a<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662fjava byte\u6570\u7ec4 \u600e\u4e48\u7528\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8IDCBABY\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>java \u5b57\u8282\u6570\u7ec4\uff08byte[]\uff09\u7528\u4e8e\u5b58\u50a8\u539f\u59cb\u4e8c\u8fdb\u5236\u6570\u636e\u3002\u521b\u5efa\u5b57\u8282\u6570\u7ec4\u53ef\u4f7f\u7528 new \u5173\u952e\u5b57\u6216\u5b57\u8282\u6570\u7ec4\u5b57\u9762\u91cf\u3002\u5b57\u8282\u6570\u7ec4\u63d0\u4f9b\u65b9\u6cd5\u64cd\u4f5c\u5143\u7d20\uff0c\u5305\u62ec\u83b7\u53d6\u3001\u8bbe\u7f6e\u3001\u83b7\u53d6\u957f\u5ea6\u548c\u904d\u5386\u3002\u5b57\u8282\u6570\u7ec4\u53ef\u4e0e\u5176\u4ed6\u4e8c\u8fdb\u5236\u6570\u636e\u7c7b\u578b\u8f6c\u6362\uff0c\u5982\u5b57\u7b26\u4e32\u3001\u6d41\u7b49\u3002\u5e38\u89c1\u7684\u7528\u6cd5\u5305\u62ec\u7f51\u7edc\u4f20\u8f93\u6570\u636e\u3001\u56fe\u50cf\u5904\u7406\u3001\u52a0\u5bc6\u7f13\u51b2\u533a\u7b49\u3002 Java \u5b57\u8282\u6570\u7ec4\u8be6\u89e3 \u4ec0\u4e48\u662f Java \u5b57\u8282\u6570\u7ec4\uff1f Java \u5b57\u8282\u6570\u7ec4 (byte[]) \u662f\u5b58\u50a8\u539f\u59cb\u4e8c\u8fdb\u5236\u6570\u636e\u7684\u6570\u7ec4\uff0c\u6bcf\u4e2a\u5143\u7d20\u4ee3\u8868\u4e00\u4e2a 8 \u4f4d\u65e0\u7b26\u53f7\u6b63\u6574\u6570\uff080 \u5230 255\uff09\u3002 \u5982\u4f55\u521b\u5efa\u5b57\u8282\u6570\u7ec4\uff1f \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b \u6709\u4ee5\u4e0b\u51e0\u79cd\u521b\u5efa\u5b57\u8282\u6570\u7ec4\u7684\u65b9\u6cd5\uff1a \u4f7f\u7528 new \u5173\u952e\u5b57\u548c\u6570\u7ec4\u7684\u5927\u5c0f\uff0c\u4f8b\u5982\uff1abyte[] bytes = new byte[10]; \u4f7f\u7528 byte[] \u5b57\u9762\u91cf\uff0c\u4f8b\u5982\uff1abyte[] bytes = { 1, 2, 3 }; \u4ece\u73b0\u6709\u5b57\u8282\u6570\u7ec4\u6216\u5176\u4ed6\u4e8c\u8fdb\u5236\u6570\u636e\u6e90\u590d\u5236\uff0c\u4f8b\u5982\uff1abyte[] bytes = sourceArray.clone(); \u5b57\u8282\u6570\u7ec4\u64cd\u4f5c \u5b57\u8282\u6570\u7ec4\u63d0\u4f9b\u4e86\u4e00\u7cfb\u5217\u65b9\u6cd5\u6765\u64cd\u4f5c\u548c\u8bbf\u95ee\u5176\u5143\u7d20\uff1a \u83b7\u53d6\u5143\u7d20\uff1a\u4f7f\u7528 get() \u65b9\u6cd5\uff0c\u4f8b\u5982\uff1abyte value = bytes[index]; \u8bbe\u7f6e\u5143\u7d20\uff1a\u4f7f\u7528 set() \u65b9\u6cd5\uff0c\u4f8b\u5982\uff1abytes[index] = value; \u957f\u5ea6\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-65349","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65349","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=65349"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65349\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=65349"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=65349"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=65349"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}