{"id":38353,"date":"2024-11-26T08:20:51","date_gmt":"2024-11-26T00:20:51","guid":{"rendered":"https:\/\/fwq.ai\/blog\/38353\/"},"modified":"2024-11-26T08:20:51","modified_gmt":"2024-11-26T00:20:51","slug":"java%e5%8f%8d%e5%b0%84%e6%80%8e%e4%b9%88%e8%8e%b7%e5%8f%96%e6%95%b0%e7%bb%84%e9%87%8c%e7%9a%84%e5%80%bc","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/38353\/","title":{"rendered":"java\u53cd\u5c04\u600e\u4e48\u83b7\u53d6\u6570\u7ec4\u91cc\u7684\u503c"},"content":{"rendered":"<blockquote><p>\n  \u901a\u8fc7 java \u53cd\u5c04\u83b7\u53d6\u6570\u7ec4\u503c\u7684\u65b9\u6cd5\uff1a\u83b7\u53d6\u6570\u7ec4\u7c7b\u7684 field \u5bf9\u8c61\u3002\u83b7\u53d6\u6570\u7ec4\u5bf9\u8c61\u3002\u83b7\u53d6\u6570\u7ec4\u957f\u5ea6\u3002\u5faa\u73af\u83b7\u53d6\u6570\u7ec4\u5143\u7d20\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/14\/2024111413305797358.jpg\" class=\"aligncenter\" title=\"java\u53cd\u5c04\u600e\u4e48\u83b7\u53d6\u6570\u7ec4\u91cc\u7684\u503c\u63d2\u56fe\" alt=\"java\u53cd\u5c04\u600e\u4e48\u83b7\u53d6\u6570\u7ec4\u91cc\u7684\u503c\u63d2\u56fe\" \/><\/p>\n<p><strong>Java\u53cd\u5c04\u5982\u4f55\u83b7\u53d6\u6570\u7ec4\u4e2d\u7684\u503c<\/strong><\/p>\n<p>\u901a\u8fc7 Java \u53cd\u5c04\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 get() \u65b9\u6cd5\u83b7\u53d6\u6570\u7ec4\u4e2d\u7684\u503c\u3002\u4e0b\u9762\u662f\u8be6\u7ec6\u6b65\u9aa4\uff1a<\/p>\n<p><strong>1. \u83b7\u53d6\u6570\u7ec4\u7c7b\u7684 Field \u5bf9\u8c61<\/strong><\/p>\n<p>\u9996\u5148\uff0c\u6211\u4eec\u9700\u8981\u83b7\u53d6\u6570\u7ec4\u7c7b\u7684 Field \u5bf9\u8c61\uff0c\u8be5\u5bf9\u8c61\u8868\u793a\u6570\u7ec4\u6210\u5458\u53d8\u91cf\u3002\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u4ee3\u7801\u83b7\u53d6 Field \u5bf9\u8c61\uff1a<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<pre>Field field = arrayClass.getField(\"array\");<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>2. \u83b7\u53d6\u6570\u7ec4\u5bf9\u8c61<\/strong><\/p>\n<p>\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u9700\u8981\u83b7\u53d6\u6570\u7ec4\u5bf9\u8c61\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\u83b7\u53d6\u6570\u7ec4\u5bf9\u8c61\uff1a<\/p>\n<pre>Object arrayObject = object.get(field);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>3. \u83b7\u53d6\u6570\u7ec4\u957f\u5ea6<\/strong><\/p>\n<p>\u8981\u83b7\u5f97\u6570\u7ec4\u7684\u957f\u5ea6\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 length \u5c5e\u6027\u3002\u4ee5\u4e0b\u4ee3\u7801\u83b7\u53d6\u6570\u7ec4\u7684\u957f\u5ea6\uff1a<\/p>\n<pre>int length = Array.getLength(arrayObject);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>4. \u5faa\u73af\u83b7\u53d6\u6570\u7ec4\u5143\u7d20<\/strong><\/p>\n<p>\u6700\u540e\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u5faa\u73af\u83b7\u53d6\u6570\u7ec4\u7684\u6bcf\u4e2a\u5143\u7d20\u3002\u4ee5\u4e0b\u4ee3\u7801\u904d\u5386\u6570\u7ec4\u5e76\u6253\u5370\u6bcf\u4e2a\u5143\u7d20\uff1a<\/p>\n<pre>for (int i = 0; i &lt; length; i++) {\n    Object element = Array.get(arrayObject, i);\n    System.out.println(element);\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u901a\u8fc7\u4e0a\u8ff0\u6b65\u9aa4\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 Java \u53cd\u5c04\u83b7\u53d6\u6570\u7ec4\u4e2d\u7684\u503c\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u53cd\u5c04\u600e\u4e48\u83b7\u53d6\u6570\u7ec4\u91cc\u7684\u503c\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>\u901a\u8fc7 java \u53cd\u5c04\u83b7\u53d6\u6570\u7ec4\u503c\u7684\u65b9\u6cd5\uff1a\u83b7\u53d6\u6570\u7ec4\u7c7b\u7684 field \u5bf9\u8c61\u3002\u83b7\u53d6\u6570\u7ec4\u5bf9\u8c61\u3002\u83b7\u53d6\u6570\u7ec4\u957f\u5ea6\u3002\u5faa\u73af\u83b7\u53d6\u6570\u7ec4\u5143\u7d20\u3002 Java\u53cd\u5c04\u5982\u4f55\u83b7\u53d6\u6570\u7ec4\u4e2d\u7684\u503c \u901a\u8fc7 Java \u53cd\u5c04\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 get() \u65b9\u6cd5\u83b7\u53d6\u6570\u7ec4\u4e2d\u7684\u503c\u3002\u4e0b\u9762\u662f\u8be6\u7ec6\u6b65\u9aa4\uff1a 1. \u83b7\u53d6\u6570\u7ec4\u7c7b\u7684 Field \u5bf9\u8c61 \u9996\u5148\uff0c\u6211\u4eec\u9700\u8981\u83b7\u53d6\u6570\u7ec4\u7c7b\u7684 Field \u5bf9\u8c61\uff0c\u8be5\u5bf9\u8c61\u8868\u793a\u6570\u7ec4\u6210\u5458\u53d8\u91cf\u3002\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u4ee3\u7801\u83b7\u53d6 Field \u5bf9\u8c61\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b Field field = arrayClass.getField(&#8220;array&#8221;); \u767b\u5f55\u540e\u590d\u5236 2. \u83b7\u53d6\u6570\u7ec4\u5bf9\u8c61 \u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u9700\u8981\u83b7\u53d6\u6570\u7ec4\u5bf9\u8c61\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\u83b7\u53d6\u6570\u7ec4\u5bf9\u8c61\uff1a Object arrayObject = object.get(field); \u767b\u5f55\u540e\u590d\u5236 3. \u83b7\u53d6\u6570\u7ec4\u957f\u5ea6 \u8981\u83b7\u5f97\u6570\u7ec4\u7684\u957f\u5ea6\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 length \u5c5e\u6027\u3002\u4ee5\u4e0b\u4ee3\u7801\u83b7\u53d6\u6570\u7ec4\u7684\u957f\u5ea6\uff1a int length = Array.getLength(arrayObject); \u767b\u5f55\u540e\u590d\u5236 4. \u5faa\u73af\u83b7\u53d6\u6570\u7ec4\u5143\u7d20 \u6700\u540e\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u5faa\u73af\u83b7\u53d6\u6570\u7ec4\u7684\u6bcf\u4e2a\u5143\u7d20\u3002\u4ee5\u4e0b\u4ee3\u7801\u904d\u5386\u6570\u7ec4\u5e76\u6253\u5370\u6bcf\u4e2a\u5143\u7d20\uff1a for (int i = 0; i &lt; length; [&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-38353","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/38353","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=38353"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/38353\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=38353"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=38353"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=38353"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}