{"id":31500,"date":"2023-04-07T23:53:05","date_gmt":"2022-12-13T10:16:59","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/java%e7%9a%84scanner%e7%b1%bb%e3%80%82\/"},"modified":"2024-04-29T22:26:57","modified_gmt":"2024-04-29T14:26:57","slug":"java%e7%9a%84scanner%e7%b1%bb%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/java%e7%9a%84scanner%e7%b1%bb%e3%80%82\/","title":{"rendered":"Java\u7684Scanner\u7c7b"},"content":{"rendered":"

\u6709\u5173Scanner\u7c7b<\/h1>\n

\u5f15\u5165<\/h2>\n

Scanner\u7c7b\u662f\u5305\u542b\u5728java.util\u5305\u4e2d\u7684\u4e00\u4e2a\u7c7b\u3002<\/p>\n

\u8fd9\u4e3b\u8981\u7528\u4e8e\u63a7\u5236\u53f0\u8f93\u5165\u548c\u8bfb\u53d6csv\u6587\u4ef6\u3002<\/p>\n

\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8<\/div>\n

\u8bf7\u5c06\u4ee5\u4e0b\u5185\u5bb9\u7528\u4e2d\u6587\u8fdb\u884c\u91ca\u4e49\uff0c\u53ea\u9700\u7ed9\u51fa\u4e00\u4e2a\u9009\u9879\uff1a<\/h2>\n

\u4f8b\u9898<\/p>\n

\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8<\/div>\n
\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8<\/div>\n

\u662f\u7684\uff0c\u5c31\u662f\u8fd9\u4e2a\u6837\u5b50\u3002
\n\u987a\u4fbf\u8bf4\u4e00\u53e5\uff0c\u867d\u7136\u4e0d\u5b8c\u6574\uff0c\u4f46\u4e3a\u4e86\u65b9\u4fbf\u7406\u89e3\u5148\u89e3\u91ca\u4e00\u4e0b\u3002<\/p>\n

\u6309\u7167\u987a\u5e8f\u6765\u8bf4
\n\u2460
\n\u9996\u5148\uff0c\u5bfc\u5165Scanner\u7c7b\u3002\u5bfc\u5165\u7684\u89c4\u5b9a\u662fimport \u5305\u540d.\u7c7b\u540d\u3002
\n\u2461
\n\u63a5\u4e0b\u6765\u5b9e\u4f8b\u5316\u5bfc\u5165\u7684Scanner\u7c7b\u3002
\nSystem.in\u662f\u63a7\u5236\u53f0\u8f93\u5165\uff08\u6807\u51c6\u8f93\u5165\uff09\u3002<\/p>\n

\u4f7f\u7528\u6307\u5b9a\u7c7b\u578b\u521b\u5efa\u4e00\u4e2a\u53d8\u91cf\u3002\u901a\u8fc7Scanner\u7c7b\u7684nextInt()\u65b9\u6cd5\u83b7\u53d6\u503c\u5e76\u521d\u59cb\u5316\u3002<\/p>\n

\u9664\u4e86\u8fd9\u4e9b\u7c7b\u578b\uff0c\u8fd8\u6709 nextByte\u3001nextShort\u3001nextLong\u3001nextFloat\u3001nextDouble\u3001nextBoolean\u3002\u53ea\u6709 char \u7c7b\u578b\u7684\u65b9\u6cd5\u4e0d\u53ef\u7528\u3002\u5173\u4e8e\u5b57\u7b26\u4e32\uff0c\u6709 next\u548c nextLine \u65b9\u6cd5\u53ef\u7528\u3002<\/p>\n

\u5728\u6700\u540e\uff0c\u6211\u4eec\u9700\u8981\u4f7f\u7528close\u65b9\u6cd5\u5173\u95edScanner\u5bf9\u8c61\u3002
\n\u5982\u679c\u4e0d\u5173\u95ed\uff0c\u53ef\u80fd\u4f1a\u5f15\u53d1\u610f\u5916\u7684\u9519\u8bef\uff0c\u6240\u4ee5\u8bf7\u6ce8\u610f\u3002<\/p>\n

\u5f02\u5e38\u5904\u7406<\/h2>\n
\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8<\/div>\n

\u5982\u679c\u5c1d\u8bd5\u6267\u884c\u610f\u5916\u7684\u5904\u7406\uff0c\u5c06\u4f1a\u53d1\u751f\u9519\u8bef\uff0c\u6240\u4ee5\u6211\u4eec\u9884\u5148\u8003\u8651\u8fd9\u79cd\u60c5\u51b5\u7684\u5904\u7406\u3002\uff08\u4e0d\u61c2\u65e5\u8bed\uff09<\/p>\n

\u53ef\u4ee5\u4f7f\u7528try-catch\u8bed\u53e5\u6765\u5904\u7406\u53ef\u80fd\u53d1\u751f\u7684\u5f02\u5e38\u3002\u5c31\u50cfif\u8bed\u53e5\u4e00\u6837\u3002\u4f8b\u5b50\u5982\u4e0b\uff1a<\/p>\n

\u5c1d\u8bd5{
\n\u53ef\u80fd\u5f15\u53d1\u5f02\u5e38\u7684\u4ee3\u7801;
\n}catch(<\u5f02\u5e38\u7c7b> <\u53d8\u91cf\u540d>){
\n\u5728\u53d1\u751f\u5f02\u5e38\u65f6\u6240\u6267\u884c\u7684\u4ee3\u7801;
\n}<\/p>\n

\u8fd9\u662f\u672c\u6b21\u7684\u60c5\u51b5\u3002<\/p>\n

\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8<\/div>\n
\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8<\/div>\n

\u8bf7\u6ce8\u610f\u4ee5\u4e0b\u51e0\u70b9\uff1a
\n1. \u9700\u8981\u5bfc\u5165\u5f02\u5e38\u5904\u7406\u7684\u7c7b\u3002\u4ed4\u7ec6\u770b\u7684\u8bdd\uff0c\u6700\u4e0a\u9762\u6709 import java.util.InputMismatchException; \/\/ \u53ef\u4ee5\u770b\u5230\u5df2\u7ecf\u6dfb\u52a0\u4e86\u7528\u4e8e\u5f02\u5e38\u5904\u7406\u7684\u90e8\u5206\u3002<\/p>\n

\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8<\/div>\n

\u7b80\u5355\u6765\u8bf4<\/h2>\n

\u6211\u603b\u7ed3\u4e86Scanner\u7684\u57fa\u672c\u7528\u6cd5\u3002
\n\u63a5\u4e0b\u6765\uff0c\u6211\u6574\u7406\u4e86\u4e00\u7bc7\u5173\u4e8e\u5c06\u8f93\u5165\u5faa\u73af\u5904\u7406\u76f4\u5230\u6b63\u5e38\u5904\u7406\u5b8c\u6210\u7684\u4ee3\u7801\u6587\u7ae0\u3002<\/p>\n

\u4e0b\u4e00\u4e2a<\/p>\n","protected":false},"excerpt":{"rendered":"

\u6709\u5173Scanner\u7c7b \u5f15\u5165 Scanner\u7c7b\u662f\u5305\u542b\u5728java.util\u5305\u4e2d\u7684\u4e00\u4e2a\u7c7b\u3002 \u8fd9\u4e3b\u8981\u7528\u4e8e\u63a7\u5236\u53f0\u8f93\u5165\u548c\u8bfb […]<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-31500","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\nJava\u7684Scanner\u7c7b - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/java\u7684scanner\u7c7b\u3002\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Java\u7684Scanner\u7c7b\" \/>\n<meta property=\"og:description\" content=\"\u6709\u5173Scanner\u7c7b \u5f15\u5165 Scanner\u7c7b\u662f\u5305\u542b\u5728java.util\u5305\u4e2d\u7684\u4e00\u4e2a\u7c7b\u3002 \u8fd9\u4e3b\u8981\u7528\u4e8e\u63a7\u5236\u53f0\u8f93\u5165\u548c\u8bfb […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/java\u7684scanner\u7c7b\u3002\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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