{"id":65594,"date":"2025-05-03T09:10:21","date_gmt":"2025-05-03T01:10:21","guid":{"rendered":"https:\/\/fwq.ai\/blog\/65594\/"},"modified":"2025-05-03T09:10:21","modified_gmt":"2025-05-03T01:10:21","slug":"string%e6%80%8e%e4%b9%88%e8%bd%ac%e6%88%90int%e6%95%b0%e7%bb%84-java-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/65594\/","title":{"rendered":"string\u600e\u4e48\u8f6c\u6210int\u6570\u7ec4 java"},"content":{"rendered":"<blockquote><p>\n  \u5982\u4f55\u5c06 string \u8f6c\u6362\u4e3a int \u6570\u7ec4\uff1f\u76f4\u63a5\u8f6c\u6362\uff08\u76f4\u63a5\u8d4b\u503c\uff09\u4f7f\u7528 java stream api\u4f7f\u7528 commons lang3\u4f7f\u7528 gson\u4f7f\u7528 jackson\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/13\/2024111304512112825.jpg\" class=\"aligncenter\" title=\"string\u600e\u4e48\u8f6c\u6210int\u6570\u7ec4 java\u63d2\u56fe\" alt=\"string\u600e\u4e48\u8f6c\u6210int\u6570\u7ec4 java\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u5c06 String \u8f6c\u6362\u4e3a int \u6570\u7ec4<\/strong><\/p>\n<p><strong>\u76f4\u63a5\u8f6c\u6362\uff08\u76f4\u63a5\u8d4b\u503c\uff09<\/strong><\/p>\n<pre>String[] arrStr = {\"1\", \"2\", \"3\", \"4\"};\nint[] arrInt = new int[arrStr.length];\nfor (int i = 0; i &lt; arrStr.length; i++) {\n  arrInt[i] = Integer.parseInt(arrStr[i]);\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u4f7f\u7528 Java Stream API<\/strong><\/p>\n<pre>String str = \"1,2,3,4\";\nint[] arrInt = str.split(\",\")\n                  .stream()\n                  .mapToInt(Integer::parseInt)\n                  .toArray();<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u4f7f\u7528 Commons Lang3<\/strong><\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<pre>String str = \"1,2,3,4\";\nint[] arrInt = NumberUtils.toIntArray(str.split(\",\"));<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u4f7f\u7528 Gson<\/strong><\/p>\n<pre>String json = \"[1,2,3,4]\";\nint[] arrInt = new Gson().fromJson(json, int[].class);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u4f7f\u7528 Jackson<\/strong><\/p>\n<pre>String json = \"[1,2,3,4]\";\nint[] arrInt = new ObjectMapper().readValue(json, int[].class);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5<\/strong><\/p>\n<p>\u5bf9\u4e8e\u5c0f\u578b\u6570\u7ec4\uff0c\u76f4\u63a5\u8f6c\u6362\u65b9\u6cd5\u7b80\u5355\u9ad8\u6548\u3002\u5bf9\u4e8e\u5927\u578b\u6570\u7ec4\u6216\u5b58\u5728\u6027\u80fd\u8981\u6c42\uff0cStream API \u6216 Commons Lang3 \u66f4\u52a0\u5408\u9002\u3002Gson \u548c Jackson \u7b49\u5e93\u63d0\u4f9b\u66f4\u901a\u7528\u7684 JSON \u89e3\u6790\u529f\u80fd\uff0c\u4f46\u901f\u5ea6\u53ef\u80fd\u7565\u6162\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fstring\u600e\u4e48\u8f6c\u6210int\u6570\u7ec4 java\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>\u5982\u4f55\u5c06 string \u8f6c\u6362\u4e3a int \u6570\u7ec4\uff1f\u76f4\u63a5\u8f6c\u6362\uff08\u76f4\u63a5\u8d4b\u503c\uff09\u4f7f\u7528 java stream api\u4f7f\u7528 commons lang3\u4f7f\u7528 gson\u4f7f\u7528 jackson \u5982\u4f55\u5c06 String \u8f6c\u6362\u4e3a int \u6570\u7ec4 \u76f4\u63a5\u8f6c\u6362\uff08\u76f4\u63a5\u8d4b\u503c\uff09 String[] arrStr = {&#8220;1&#8221;, &#8220;2&#8221;, &#8220;3&#8221;, &#8220;4&#8221;}; int[] arrInt = new int[arrStr.length]; for (int i = 0; i &lt; arrStr.length; i++) { arrInt[i] = Integer.parseInt(arrStr[i]); } \u767b\u5f55\u540e\u590d\u5236 \u4f7f\u7528 Java Stream API String str = &#8220;1,2,3,4&#8221;; int[] arrInt [&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-65594","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65594","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=65594"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65594\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=65594"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=65594"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=65594"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}