{"id":65614,"date":"2025-05-03T14:37:54","date_gmt":"2025-05-03T06:37:54","guid":{"rendered":"https:\/\/fwq.ai\/blog\/65614\/"},"modified":"2025-05-03T14:37:54","modified_gmt":"2025-05-03T06:37:54","slug":"java%e6%95%b0%e7%bb%84%e8%b6%8a%e7%95%8c%e6%80%8e%e4%b9%88%e6%94%b9-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/65614\/","title":{"rendered":"java\u6570\u7ec4\u8d8a\u754c\u600e\u4e48\u6539"},"content":{"rendered":"<blockquote><p>\n  \u8981\u66f4\u6b63 java \u4e2d\u7684\u6570\u7ec4\u8d8a\u754c\u9519\u8bef\uff0c\u8bf7\u91c7\u53d6\u4ee5\u4e0b\u6b65\u9aa4\uff1a\u8bc6\u522b\u9519\u8bef\uff08indexoutofboundsexception\uff09\u3002\u68c0\u67e5\u6570\u7ec4\u7d22\u5f15\u3002\u4f7f\u7528\u8fb9\u754c\u68c0\u67e5\u3002\u4f7f\u7528\u5f02\u5e38\u5904\u7406\u3002\u7f29\u5c0f\u6570\u7ec4\u5927\u5c0f\uff08\u53ef\u9009\uff09\u3002\u4f7f\u7528\u5faa\u73af\u904d\u5386\u6570\u7ec4\u5143\u7d20\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/13\/2024111305303855855.jpg\" class=\"aligncenter\" title=\"java\u6570\u7ec4\u8d8a\u754c\u600e\u4e48\u6539\u63d2\u56fe\" alt=\"java\u6570\u7ec4\u8d8a\u754c\u600e\u4e48\u6539\u63d2\u56fe\" \/><\/p>\n<p><strong>Java \u6570\u7ec4\u8d8a\u754c\u5982\u4f55\u66f4\u6b63<\/strong><\/p>\n<p>\u6570\u7ec4\u8d8a\u754c\u9519\u8bef\u5728 Java \u4e2d\u5f88\u5e38\u89c1\uff0c\u5f53\u5c1d\u8bd5\u8bbf\u95ee\u8d85\u51fa\u6570\u7ec4\u8303\u56f4\u7684\u5143\u7d20\u65f6\u5c31\u4f1a\u53d1\u751f\u3002\u8981\u66f4\u6b63\u6570\u7ec4\u8d8a\u754c\uff0c\u53ef\u4ee5\u91c7\u7528\u4ee5\u4e0b\u6b65\u9aa4\uff1a<\/p>\n<p><strong>1. \u8bc6\u522b\u9519\u8bef<\/strong><\/p>\n<p>\u5728 Java \u4e2d\uff0c\u6570\u7ec4\u8d8a\u754c\u9519\u8bef\u901a\u5e38\u4f1a\u629b\u51fa IndexOutOfBoundsException\u3002\u5982\u679c\u5728\u4ee3\u7801\u4e2d\u770b\u5230\u4e86\u6b64\u5f02\u5e38\uff0c\u5219\u8868\u660e\u51fa\u73b0\u4e86\u6570\u7ec4\u8d8a\u754c\u95ee\u9898\u3002<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<p><strong>2. \u68c0\u67e5\u6570\u7ec4\u7d22\u5f15<\/strong><\/p>\n<p>\u68c0\u67e5\u6570\u7ec4\u7d22\u5f15\u662f\u5426\u8d85\u51fa\u6570\u7ec4\u7684\u8303\u56f4\u3002\u53ef\u4ee5\u4f7f\u7528\u6570\u7ec4\u7684 length \u5c5e\u6027\u6765\u83b7\u53d6\u6570\u7ec4\u7684\u957f\u5ea6\uff0c\u5e76\u786e\u4fdd\u7d22\u5f15\u5728 0 \u548c length &#8211; 1 \u4e4b\u95f4\u3002<\/p>\n<p><strong>3. \u4f7f\u7528\u8fb9\u754c\u68c0\u67e5<\/strong><\/p>\n<p>\u5728\u8bbf\u95ee\u6570\u7ec4\u5143\u7d20\u4e4b\u524d\uff0c\u5148\u68c0\u67e5\u7d22\u5f15\u662f\u5426\u6709\u6548\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\u6a21\u677f\uff1a<\/p>\n<pre>if (index &gt;= 0 &amp;&amp; index &lt; array.length) {\n  \/\/ \u8bbf\u95ee\u6570\u7ec4\u5143\u7d20\n} else {\n  \/\/ \u5904\u7406\u6570\u7ec4\u8d8a\u754c\u9519\u8bef\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>4. \u4f7f\u7528\u5f02\u5e38\u5904\u7406<\/strong><\/p>\n<p>\u5982\u679c\u65e0\u6cd5\u4f7f\u7528\u8fb9\u754c\u68c0\u67e5\uff0c\u5219\u53ef\u4ee5\u5728\u8bbf\u95ee\u6570\u7ec4\u5143\u7d20\u65f6\u4f7f\u7528\u5f02\u5e38\u5904\u7406\u3002\u5982\u679c\u51fa\u73b0 IndexOutOfBoundsException\uff0c\u5219\u53ef\u4ee5\u6355\u83b7\u5e76\u5904\u7406\u8be5\u5f02\u5e38\u3002\u4f8b\u5982\uff1a<\/p>\n<pre>try {\n  \/\/ \u8bbf\u95ee\u6570\u7ec4\u5143\u7d20\n} catch (IndexOutOfBoundsException e) {\n  \/\/ \u5904\u7406\u6570\u7ec4\u8d8a\u754c\u9519\u8bef\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>5. \u7f29\u5c0f\u6570\u7ec4\u5927\u5c0f<\/strong><\/p>\n<p>\u5982\u679c\u6570\u7ec4\u592a\u5927\uff0c\u5e76\u4e14\u4e0d\u4f1a\u4f7f\u7528\u6240\u6709\u5143\u7d20\uff0c\u53ef\u4ee5\u7f29\u5c0f\u6570\u7ec4\u5927\u5c0f\u4ee5\u51cf\u5c11\u8d8a\u754c\u9519\u8bef\u7684\u53ef\u80fd\u6027\u3002\u53ef\u4ee5\u4f7f\u7528 Arrays.copyOf() \u65b9\u6cd5\u6765\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u5176\u4e2d\u53ea\u5305\u542b\u6240\u9700\u7684\u5143\u7d20\u3002<\/p>\n<p><strong>6. \u4f7f\u7528\u5faa\u73af<\/strong><\/p>\n<p>\u5bf9\u4e8e\u5927\u578b\u6570\u7ec4\uff0c\u4f7f\u7528\u5faa\u73af\u904d\u5386\u6570\u7ec4\u5143\u7d20\u53ef\u80fd\u6bd4\u76f4\u63a5\u8bbf\u95ee\u7d22\u5f15\u66f4\u6709\u6548\u4e14\u66f4\u5b89\u5168\u3002\u8fd9\u6709\u52a9\u4e8e\u907f\u514d\u7d22\u5f15\u9519\u8bef\u548c\u6570\u7ec4\u8d8a\u754c\u95ee\u9898\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u6570\u7ec4\u8d8a\u754c\u600e\u4e48\u6539\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>\u8981\u66f4\u6b63 java \u4e2d\u7684\u6570\u7ec4\u8d8a\u754c\u9519\u8bef\uff0c\u8bf7\u91c7\u53d6\u4ee5\u4e0b\u6b65\u9aa4\uff1a\u8bc6\u522b\u9519\u8bef\uff08indexoutofboundsexception\uff09\u3002\u68c0\u67e5\u6570\u7ec4\u7d22\u5f15\u3002\u4f7f\u7528\u8fb9\u754c\u68c0\u67e5\u3002\u4f7f\u7528\u5f02\u5e38\u5904\u7406\u3002\u7f29\u5c0f\u6570\u7ec4\u5927\u5c0f\uff08\u53ef\u9009\uff09\u3002\u4f7f\u7528\u5faa\u73af\u904d\u5386\u6570\u7ec4\u5143\u7d20\u3002 Java \u6570\u7ec4\u8d8a\u754c\u5982\u4f55\u66f4\u6b63 \u6570\u7ec4\u8d8a\u754c\u9519\u8bef\u5728 Java \u4e2d\u5f88\u5e38\u89c1\uff0c\u5f53\u5c1d\u8bd5\u8bbf\u95ee\u8d85\u51fa\u6570\u7ec4\u8303\u56f4\u7684\u5143\u7d20\u65f6\u5c31\u4f1a\u53d1\u751f\u3002\u8981\u66f4\u6b63\u6570\u7ec4\u8d8a\u754c\uff0c\u53ef\u4ee5\u91c7\u7528\u4ee5\u4e0b\u6b65\u9aa4\uff1a 1. \u8bc6\u522b\u9519\u8bef \u5728 Java \u4e2d\uff0c\u6570\u7ec4\u8d8a\u754c\u9519\u8bef\u901a\u5e38\u4f1a\u629b\u51fa IndexOutOfBoundsException\u3002\u5982\u679c\u5728\u4ee3\u7801\u4e2d\u770b\u5230\u4e86\u6b64\u5f02\u5e38\uff0c\u5219\u8868\u660e\u51fa\u73b0\u4e86\u6570\u7ec4\u8d8a\u754c\u95ee\u9898\u3002 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b 2. \u68c0\u67e5\u6570\u7ec4\u7d22\u5f15 \u68c0\u67e5\u6570\u7ec4\u7d22\u5f15\u662f\u5426\u8d85\u51fa\u6570\u7ec4\u7684\u8303\u56f4\u3002\u53ef\u4ee5\u4f7f\u7528\u6570\u7ec4\u7684 length \u5c5e\u6027\u6765\u83b7\u53d6\u6570\u7ec4\u7684\u957f\u5ea6\uff0c\u5e76\u786e\u4fdd\u7d22\u5f15\u5728 0 \u548c length &#8211; 1 \u4e4b\u95f4\u3002 3. \u4f7f\u7528\u8fb9\u754c\u68c0\u67e5 \u5728\u8bbf\u95ee\u6570\u7ec4\u5143\u7d20\u4e4b\u524d\uff0c\u5148\u68c0\u67e5\u7d22\u5f15\u662f\u5426\u6709\u6548\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\u6a21\u677f\uff1a if (index &gt;= 0 &amp;&amp; index &lt; array.length) { \/\/ \u8bbf\u95ee\u6570\u7ec4\u5143\u7d20 } else { \/\/ \u5904\u7406\u6570\u7ec4\u8d8a\u754c\u9519\u8bef } \u767b\u5f55\u540e\u590d\u5236 4. \u4f7f\u7528\u5f02\u5e38\u5904\u7406 \u5982\u679c\u65e0\u6cd5\u4f7f\u7528\u8fb9\u754c\u68c0\u67e5\uff0c\u5219\u53ef\u4ee5\u5728\u8bbf\u95ee\u6570\u7ec4\u5143\u7d20\u65f6\u4f7f\u7528\u5f02\u5e38\u5904\u7406\u3002\u5982\u679c\u51fa\u73b0 IndexOutOfBoundsException\uff0c\u5219\u53ef\u4ee5\u6355\u83b7\u5e76\u5904\u7406\u8be5\u5f02\u5e38\u3002\u4f8b\u5982\uff1a try { \/\/ \u8bbf\u95ee\u6570\u7ec4\u5143\u7d20 [&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-65614","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65614","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=65614"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65614\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=65614"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=65614"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=65614"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}