{"id":66824,"date":"2025-05-03T17:40:36","date_gmt":"2025-05-03T09:40:36","guid":{"rendered":"https:\/\/fwq.ai\/blog\/66824\/"},"modified":"2025-05-03T17:40:36","modified_gmt":"2025-05-03T09:40:36","slug":"java%e9%ab%98%e7%ba%a7%e6%b5%81%e6%80%8e%e4%b9%88%e5%86%99%e5%ad%97%e8%8a%82%e6%95%b0%e7%bb%84-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/66824\/","title":{"rendered":"java\u9ad8\u7ea7\u6d41\u600e\u4e48\u5199\u5b57\u8282\u6570\u7ec4"},"content":{"rendered":"<blockquote><p>\n  \u56de\u7b54\uff1a\u5171\u6709\u56db\u79cd\u65b9\u6cd5\u53ef\u4ee5\u5c06\u5b57\u8282\u6570\u7ec4\u5199\u5165\u8f93\u51fa\u6d41\uff1a\u76f4\u63a5\u65b9\u5f0f\u3001\u6d41\u8fde\u63a5\uff0carrays.copyof() \u548c system.arraycopy()\u3002\u76f4\u63a5\u65b9\u5f0f\uff1a\u4f7f\u7528 bytearrayoutputstream\u3002\u6d41\u8fde\u63a5\uff1a\u4f7f\u7528 inputstream \u548c outputstream\u3002arrays.copyof()\uff1a\u521b\u5efa\u5b57\u8282\u6570\u7ec4\u526f\u672c\u7136\u540e\u5199\u5165\u3002system.arraycopy()\uff1a\u590d\u5236\u5b57\u8282\u6570\u7ec4\u5230\u76ee\u6807\u5b57\u8282\u6570\u7ec4\u7136\u540e\u5199\u5165\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/17\/2024111711244962891.jpg\" class=\"aligncenter\" title=\"java\u9ad8\u7ea7\u6d41\u600e\u4e48\u5199\u5b57\u8282\u6570\u7ec4\u63d2\u56fe\" alt=\"java\u9ad8\u7ea7\u6d41\u600e\u4e48\u5199\u5b57\u8282\u6570\u7ec4\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u4f7f\u7528 Java \u9ad8\u7ea7\u6d41\u5199\u5165\u5b57\u8282\u6570\u7ec4<\/strong><\/p>\n<p><strong>\u76f4\u63a5\u65b9\u5f0f\uff1a<\/strong><\/p>\n<pre>byte[] bytes = new byte[1024];\ntry (OutputStream outputStream = new ByteArrayOutputStream()) {\n    outputStream.write(bytes);\n    outputStream.flush();\n} catch (IOException e) {\n    e.printStackTrace();\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u4f7f\u7528\u6d41\u8fde\u63a5\uff1a<\/strong><\/p>\n<p>\u5c06\u5b57\u8282\u6570\u7ec4\u5199\u5165\u8f93\u51fa\u6d41\uff0c\u7136\u540e\u4f7f\u7528\u6d41\u8fde\u63a5\u5c06\u8f93\u51fa\u6d41\u8fde\u63a5\u5230\u5b57\u8282\u6570\u7ec4\u8f93\u51fa\u6d41\uff1a<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<pre>byte[] bytes = new byte[1024];\ntry (OutputStream outputStream = new ByteArrayOutputStream();\n     InputStream inputStream = new ByteArrayInputStream(bytes)) {\n    inputStream.transferTo(outputStream);\n    outputStream.flush();\n} catch (IOException e) {\n    e.printStackTrace();\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u5176\u4ed6\u65b9\u6cd5\uff1a<\/strong><\/p>\n<ul>\n<li> <strong>Arrays.copyOf()\uff1a<\/strong>\u521b\u5efa\u4e0e\u539f\u59cb\u5b57\u8282\u6570\u7ec4\u957f\u5ea6\u76f8\u540c\u7684\u5b57\u8282\u6570\u7ec4\u526f\u672c\uff0c\u7136\u540e\u5c06\u5176\u5199\u5165\u8f93\u51fa\u6d41\uff1a<\/li>\n<\/ul>\n<pre>byte[] bytes = new byte[1024];\ntry (OutputStream outputStream = new ByteArrayOutputStream()) {\n    outputStream.write(Arrays.copyOf(bytes, bytes.length));\n    outputStream.flush();\n} catch (IOException e) {\n    e.printStackTrace();\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<ul>\n<li> <strong>System.arraycopy()\uff1a<\/strong>\u5c06\u539f\u59cb\u5b57\u8282\u6570\u7ec4\u590d\u5236\u5230\u76ee\u6807\u5b57\u8282\u6570\u7ec4\u4e2d\uff0c\u7136\u540e\u5c06\u5176\u5199\u5165\u8f93\u51fa\u6d41\uff1a<\/li>\n<\/ul>\n<pre>byte[] bytes = new byte[1024];\nbyte[] target = new byte[1024];\nSystem.arraycopy(bytes, 0, target, 0, bytes.length);\ntry (OutputStream outputStream = new ByteArrayOutputStream()) {\n    outputStream.write(target);\n    outputStream.flush();\n} catch (IOException e) {\n    e.printStackTrace();\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u9009\u62e9\u65b9\u6cd5\uff1a<\/strong><\/p>\n<p>\u6839\u636e\u5177\u4f53\u573a\u666f\u9009\u62e9\u9002\u5f53\u7684\u65b9\u6cd5\u3002\u76f4\u63a5\u65b9\u5f0f\u662f\u6700\u7b80\u5355\u7684\uff0c\u800c\u6d41\u8fde\u63a5\u548c System.arraycopy() \u65b9\u6cd5\u63d0\u4f9b\u66f4\u591a\u7684\u7075\u6d3b\u6027\u3002Arrays.copyOf() \u65b9\u6cd5\u63d0\u4f9b\u4e86\u526f\u672c\uff0c\u53ef\u4ee5\u4fee\u6539\u800c\u4e0d\u5f71\u54cd\u539f\u59cb\u5b57\u8282\u6570\u7ec4\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u9ad8\u7ea7\u6d41\u600e\u4e48\u5199\u5b57\u8282\u6570\u7ec4\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>\u56de\u7b54\uff1a\u5171\u6709\u56db\u79cd\u65b9\u6cd5\u53ef\u4ee5\u5c06\u5b57\u8282\u6570\u7ec4\u5199\u5165\u8f93\u51fa\u6d41\uff1a\u76f4\u63a5\u65b9\u5f0f\u3001\u6d41\u8fde\u63a5\uff0carrays.copyof() \u548c system.arraycopy()\u3002\u76f4\u63a5\u65b9\u5f0f\uff1a\u4f7f\u7528 bytearrayoutputstream\u3002\u6d41\u8fde\u63a5\uff1a\u4f7f\u7528 inputstream \u548c outputstream\u3002arrays.copyof()\uff1a\u521b\u5efa\u5b57\u8282\u6570\u7ec4\u526f\u672c\u7136\u540e\u5199\u5165\u3002system.arraycopy()\uff1a\u590d\u5236\u5b57\u8282\u6570\u7ec4\u5230\u76ee\u6807\u5b57\u8282\u6570\u7ec4\u7136\u540e\u5199\u5165\u3002 \u5982\u4f55\u4f7f\u7528 Java \u9ad8\u7ea7\u6d41\u5199\u5165\u5b57\u8282\u6570\u7ec4 \u76f4\u63a5\u65b9\u5f0f\uff1a byte[] bytes = new byte[1024]; try (OutputStream outputStream = new ByteArrayOutputStream()) { outputStream.write(bytes); outputStream.flush(); } catch (IOException e) { e.printStackTrace(); } \u767b\u5f55\u540e\u590d\u5236 \u4f7f\u7528\u6d41\u8fde\u63a5\uff1a \u5c06\u5b57\u8282\u6570\u7ec4\u5199\u5165\u8f93\u51fa\u6d41\uff0c\u7136\u540e\u4f7f\u7528\u6d41\u8fde\u63a5\u5c06\u8f93\u51fa\u6d41\u8fde\u63a5\u5230\u5b57\u8282\u6570\u7ec4\u8f93\u51fa\u6d41\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b byte[] bytes = new byte[1024]; try (OutputStream outputStream = new ByteArrayOutputStream(); InputStream inputStream = new ByteArrayInputStream(bytes)) { inputStream.transferTo(outputStream); outputStream.flush(); [&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-66824","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/66824","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=66824"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/66824\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=66824"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=66824"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=66824"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}