{"id":31237,"date":"2023-02-21T12:37:09","date_gmt":"2022-12-18T12:46:57","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90java%e3%80%91%e4%bd%bf%e7%94%a8%e5%a4%9a%e4%b8%aa%e7%89%88%e6%9c%ac%e7%9a%84java%e7%9a%84%e5%88%87%e6%8d%a2%e6%96%b9%e6%b3%95\/"},"modified":"2025-08-12T23:00:14","modified_gmt":"2025-08-12T15:00:14","slug":"%e3%80%90java%e3%80%91%e4%bd%bf%e7%94%a8%e5%a4%9a%e4%b8%aa%e7%89%88%e6%9c%ac%e7%9a%84java%e7%9a%84%e5%88%87%e6%8d%a2%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90java%e3%80%91%e4%bd%bf%e7%94%a8%e5%a4%9a%e4%b8%aa%e7%89%88%e6%9c%ac%e7%9a%84java%e7%9a%84%e5%88%87%e6%8d%a2%e6%96%b9%e6%b3%95\/","title":{"rendered":"\u3010Java\u3011\u4f7f\u7528\u591a\u4e2a\u7248\u672c\u7684Java\u7684\u5207\u6362\u65b9\u6cd5"},"content":{"rendered":"<h1>\u9996\u5148<\/h1>\n<p>\u5728\u4f7f\u7528\u591a\u4e2a\u7248\u672c\u7684Java\u5e76\u5207\u6362\u4f7f\u7528\u65f6\uff0c\u6709\u591a\u79cd\u65b9\u6cd5\u53ef\u4f9b\u9009\u62e9\uff0c\u5982\u4f7f\u7528jenv\u7b49\u3002\u5728\u8fd9\u91cc\uff0c\u6211\u4eec\u4ecb\u7ecd\u4f7f\u7528\u4f20\u7edf\u7684alternatives\u65b9\u6cd5\u3002<\/p>\n<p>\u59be\u60f3\uff0c\u82e5\u5728\u4ee5\u4e0b\u573a\u666f\u4e2d\uff0c\u7565\u77e5\u4e00\u4e8calternatives\u547d\u4ee4\u540d\uff0c\u6216\u53ef\u83b7\u76ca\u532a\u6d45\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u53e4\u3044Java\u304c\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3055\u308c\u3066\u3044\u308b\u672c\u756a\u74b0\u5883\u306b\u65b0\u3057\u3044Java\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u305f\u3044\u3051\u308c\u3069\u3082\u3001\u4e0d\u5177\u5408\u304c\u767a\u751f\u3057\u305f\u5834\u5408\u306b\u53e4\u3044Java\u3078\u5207\u308a\u623b\u3057\u305f\u3044\u6642\u3002<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30c6\u30b9\u30c8\u74b0\u5883\u3067\u8907\u6570\u30d0\u30fc\u30b8\u30e7\u30f3\u306eJava\u3092\u5229\u7528\u3057\u305f\u3044\u6642\u3002<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">OracleJDK\u304b\u3089OpenJDK\u306b\u30b5\u30c3\u3068\u5207\u308a\u66ff\u3048\u305f\u3044\u6642\u3002<\/ul>\n<h1>&#8220;alternatives\u547d\u4ee4\u662f\u4ec0\u4e48\u5462?&#8221;<\/h1>\n<p>&#8220;alternatives&#8221; \u662f CentOS \u4e2d\u5167\u5efa\u7684\u4e00\u500b\u6307\u4ee4\u3002<\/p>\n<p>\u5f53\u60a8\u5728man\u547d\u4ee4\u4e2d\u641c\u7d22alternatives\u65f6\uff0c\u4f1a\u53d1\u73b0\u5b83\u88ab\u63cf\u8ff0\u4e3a\u201c\u901a\u8fc7\u7ef4\u62a4\u7b26\u53f7\u94fe\u63a5\u6765\u786e\u5b9a\u9ed8\u8ba4\u547d\u4ee4\u201d\u3002\u5c3d\u7ba1\u7528\u82f1\u8bed\u63cf\u8ff0\u53ef\u80fd\u6709\u4e9b\u6666\u6da9\uff0c\u4f46\u5b83\u5b9e\u9645\u4e0a\u662f\u4e00\u79cd\u975e\u5e38\u4f18\u79c0\u7684\u547d\u4ee4\uff0c\u53ef\u5229\u7528\u7b26\u53f7\u94fe\u63a5\u5207\u6362\u5177\u6709\u76f8\u4f3c\u529f\u80fd\u6216\u4e0d\u540c\u7248\u672c\u7684\u8f6f\u4ef6\u3002<\/p>\n<p>\u6362\u53e5\u8bdd\u8bf4\uff0c\u4e0d\u4ec5\u4ec5\u9650\u4e8eJava\uff0c\u53ef\u4ee5\u5728\u5404\u79cd\u547d\u4ee4\u4e2d\u5e94\u7528\u3002<\/p>\n<h1>\u8003\u8bd5\u73af\u5883<\/h1>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">OS\uff1aCentOS 6.10<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u6e08\u307f\u306eJava\uff1aJava12\uff08Oracle JDK\uff09<\/ul>\n<\/li>\n<\/ul>\n<p>RPM\u3067\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>[root@akagi ~]# java -version\r\njava version \"12.0.1\" 2019-04-16\r\nJava(TM) SE Runtime Environment (build 12.0.1+12)\r\nJava HotSpot(TM) 64-Bit Server VM (build 12.0.1+12, mixed mode, sharing)\r\n<\/code><\/pre>\n<h1>\u9884\u5148\u51c6\u5907<\/h1>\n<h2>\u5b89\u88c5\u65b0\u7684Java\uff08OpenJDK\uff09\u3002<\/h2>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>\u4eceOpenJDK\u7684\u7f51\u7ad9\u4e0b\u8f7dJava12\u7684tar.gz\u6587\u4ef6\u3002<\/ol>\n<\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>\u5c06tar.gz\u6587\u4ef6\u653e\u7f6e\u5728\u9002\u5f53\u7684\u76ee\u5f55\uff08\u5728\u8fd9\u91cc\u662f\/usr\/local\uff09\u4e0b\u5e76\u8fdb\u884c\u89e3\u538b\u4ee5\u5b8c\u6210\u5b89\u88c5\u3002<\/ol>\n<\/li>\n<\/ol>\n<p>\u5b89\u88c5\u5df2\u7ecf\u5b8c\u6210\uff0c\u4f46\u8def\u5f84\u672a\u8bbe\u7f6e\u3002<\/p>\n<pre class=\"post-pre\"><code>[root@akagi ~]# cd \/usr\/local\/\r\n[root@akagi local]# tar zxvf openjdk-12.0.1_linux-x64_bin.tar.gz \r\n[root@akagi local]# ls | grep jdk\r\njdk-12.0.1\r\nopenjdk-12.0.1_linux-x64_bin.tar.gz\r\n<\/code><\/pre>\n<h1>\u4f7f\u7528alternatives\u547d\u4ee4\u5207\u6362Java\u3002<\/h1>\n<h2>\u786e\u8ba4\u5f53\u524d\u7684\u72b6\u6001<\/h2>\n<p>alternatives &#8211;config {\u7dcf\u79f0\u540d(generic name)}\u3067\u3001\u73fe\u5728\u306e\u72b6\u614b\u3092\u5bfe\u8a71\u30e2\u30fc\u30c9\u3067\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u7dcf\u79f0\u540d\u306f&#8221;java&#8221;\u3084&#8221;perl&#8221;\u306a\u3069\u3001\u5b9f\u969b\u306b\u5229\u7528\u3057\u3066\u3044\u308b\u30b3\u30de\u30f3\u30c9\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002<\/p>\n<p>\u3053\u3053\u3067\u306f&#8221;java&#8221;\u306b\u5bfe\u5fdc\u3059\u308b\u30b3\u30de\u30f3\u30c9\u304c1\u3064\u3057\u304b\u306a\u3044\u306e\u3067\u3001[Enter]\u3092\u62bc\u3057\u3066\u73fe\u5728\u306e\u8a2d\u5b9a\u3092\u7dad\u6301\u3057\u305f\u307e\u307e\u5bfe\u8a71\u30e2\u30fc\u30c9\u3092\u629c\u3051\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>[root@akagi local]# alternatives --config java\r\n\r\n1 \u30d7\u30ed\u30b0\u30e9\u30e0\u304c\u3042\u308a 'java' \u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002\r\n\r\n  \u9078\u629e       \u30b3\u30de\u30f3\u30c9\r\n-----------------------------------------------\r\n*+ 1           \/usr\/java\/jdk-12.0.1\/bin\/java\r\n\r\nEnter \u3092\u62bc\u3057\u3066\u73fe\u5728\u306e\u9078\u629e [+] \u3092\u4fdd\u6301\u3059\u308b\u304b\u3001\u9078\u629e\u756a\u53f7\u3092\u5165\u529b\u3057\u307e\u3059:\r\n<\/code><\/pre>\n<h2>\u547d\u4ee4\u7684\u6ce8\u518c\uff5e\u5207\u6362\u4f7f\u7528\u7684JVM<\/h2>\n<p>alternatives &#8211;install {\u30ea\u30f3\u30af} {\u7dcf\u79f0\u540d(generic name)} {\u30d1\u30b9} {\u512a\u5148\u5ea6}\u3068\u5165\u529b\u3059\u308b\u3053\u3068\u3067\u3001\u9078\u629e\u80a2\u3068\u306a\u308b\u30b3\u30de\u30f3\u30c9\u3092\u767b\u9332\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u5b58\u5728\u3057\u306a\u3044&#8221;\u7dcf\u79f0\u540d&#8221;\u3092\u6307\u5b9a\u3057\u305f\u5834\u5408\u3001&#8221;\u7dcf\u79f0\u540d&#8221;\u306e\u30b0\u30eb\u30fc\u30d7\u304c\u65b0\u305f\u306b\u4f5c\u6210\u3055\u308c\u307e\u3059\u3002<br \/>\n\u65e2\u306b\u5b58\u5728\u3059\u308b&#8221;\u7dcf\u79f0\u540d&#8221;\u3092\u6307\u5b9a\u3057\u305f\u5834\u5408\u3001\u540c\u3058&#8221;\u7dcf\u79f0\u540d&#8221;\u306e\u30b0\u30eb\u30fc\u30d7\u5185\u306b\u767b\u9332\u3055\u308c\u307e\u3059\u3002<br \/>\n\u30ea\u30f3\u30af\u306f\u3001\u7dcf\u79f0\u540d\u306e\u30b3\u30de\u30f3\u30c9\u3092\u5b9f\u884c\u3057\u305f\u969b\u306b\u547c\u3070\u308c\u308b\u30b7\u30f3\u30dc\u30ea\u30c3\u30af\u30ea\u30f3\u30af\u3067\u3001&#8221;\/usr\/bin\/java&#8221;\u3084&#8221;\/usr\/local\/bin\/perl&#8221;\u306a\u3069\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002<br \/>\n\u30d1\u30b9\u306f\u3001\u7dcf\u79f0\u540d\u306e\u30b3\u30de\u30f3\u30c9\u3092\u5b9f\u884c\u3057\u305f\u969b\u306b\u5b9f\u969b\u306b\u5b9f\u884c\u3055\u308c\u308b\u30b3\u30de\u30f3\u30c9\u3067\u3059\u3002<\/p>\n<p>\u518d\u3073alternatives &#8211;config java\u3068\u5165\u529b\u3057\u3066\u3001\u547c\u3073\u51fa\u3055\u308c\u308bJVM\u3092\u5207\u308a\u66ff\u3048\u307e\u3059\u3002<\/p>\n<p>[\uff0b]\u306f\u73fe\u5728\u9078\u629e\u3055\u308c\u3066\u3044\u308b\u3082\u306e\u3067\u3001\u3053\u306e\u6642\u70b9\u3067\u306fOracleJDK\u304c\u9078\u629e\u72b6\u614b\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002<br \/>\n\u305d\u3053\u3067\u3001\u6700\u5f8c\u306b\u8981\u6c42\u3055\u308c\u308b\u300c\u9078\u629e\u756a\u53f7\u300d\u30672\uff082\u756a\uff09\u3092\u5165\u529b\u3057\u3066\u3001OpenJDK\u306b\u5207\u308a\u66ff\u3048\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>[root@akagi local]# alternatives --install \/usr\/bin\/java java \/usr\/local\/jdk-12.0.1\/bin\/java 2\r\n[root@akagi local]# alternatives --config java\r\n\r\n2 \u30d7\u30ed\u30b0\u30e9\u30e0\u304c\u3042\u308a 'java' \u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002\r\n\r\n  \u9078\u629e       \u30b3\u30de\u30f3\u30c9\r\n-----------------------------------------------\r\n*+ 1           \/usr\/java\/jdk-12.0.1\/bin\/java\r\n   2           \/usr\/local\/jdk-12.0.1\/bin\/java\r\n\r\nEnter \u3092\u62bc\u3057\u3066\u73fe\u5728\u306e\u9078\u629e [+] \u3092\u4fdd\u6301\u3059\u308b\u304b\u3001\u9078\u629e\u756a\u53f7\u3092\u5165\u529b\u3057\u307e\u3059:2\r\n<\/code><\/pre>\n<h2>\u786e\u8ba4\u8bbe\u5b9a\u540e\u7684\u72b6\u6001<\/h2>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u8a2d\u5b9a\u5b8c\u4e86\u5f8c\u306balternatives &#8211;config java\u3068\u5165\u529b\u3057\u3066\u3001\u73fe\u5728\u9078\u629e\u3055\u308c\u3066\u3044\u308bJVM\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002<\/ul>\n<\/li>\n<\/ul>\n<p>\u3053\u306e\u6642\u70b9\u3067\u306f2\u756a\uff08OpenJDK\uff09\u304c\u9078\u629e\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>[root@akagi local]# alternatives --config java\r\n\r\n2 \u30d7\u30ed\u30b0\u30e9\u30e0\u304c\u3042\u308a 'java' \u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002\r\n\r\n  \u9078\u629e       \u30b3\u30de\u30f3\u30c9\r\n-----------------------------------------------\r\n*  1           \/usr\/java\/jdk-12.0.1\/bin\/java\r\n + 2           \/usr\/local\/jdk-12.0.1\/bin\/java\r\n\r\nEnter \u3092\u62bc\u3057\u3066\u73fe\u5728\u306e\u9078\u629e [+] \u3092\u4fdd\u6301\u3059\u308b\u304b\u3001\u9078\u629e\u756a\u53f7\u3092\u5165\u529b\u3057\u307e\u3059:\r\n<\/code><\/pre>\n<ul class=\"post-ul\">\u6700\u5f8c\u306bJava\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u8868\u793a\u3057\u3066\u3001\u5b9f\u969b\u306b\u52d5\u4f5c\u3057\u3066\u3044\u308b\u306e\u304cOpenJDK\u3067\u3042\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002<\/ul>\n<pre class=\"post-pre\"><code>[root@akagi local]# java -version\r\nopenjdk version \"12.0.1\" 2019-04-16\r\nOpenJDK Runtime Environment (build 12.0.1+12)\r\nOpenJDK 64-Bit Server VM (build 12.0.1+12, mixed mode, sharing)\r\n<\/code><\/pre>\n<h3>\u5176\u4ed6<\/h3>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u4ee5\u4e0b\u306e\u8a18\u4e8b\u306b\u3088\u308b\u3068\u3001CentOS7\u7cfb\u3067\u3082alternatives\u30b3\u30de\u30f3\u30c9\u3067Java\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u5207\u308a\u66ff\u3048\u3089\u308c\u308b\u3088\u3046\u3067\u3059\u3002<\/ul>\n<\/li>\n<\/ul>\n<p>CentOS7\u7cfb+JDK-9.0.1+JDK1.8.0+alternatives\u3067\u5207\u308a\u66ff\u3048<\/p>\n<h3>\u8bf7\u63d0\u4f9b\u53c2\u8003\u7f51\u5740\u3002<\/h3>\n<ul class=\"post-ul\">CentOS\u3067\u300calternatives\u300d\u30b3\u30de\u30f3\u30c9\u3092\u4f7f\u7528\u3057\u3066Java\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u5207\u308a\u66ff\u3048\u308b<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u9996\u5148 \u5728\u4f7f\u7528\u591a\u4e2a\u7248\u672c\u7684Java\u5e76\u5207\u6362\u4f7f\u7528\u65f6\uff0c\u6709\u591a\u79cd\u65b9\u6cd5\u53ef\u4f9b\u9009\u62e9\uff0c\u5982\u4f7f\u7528jenv\u7b49\u3002\u5728\u8fd9\u91cc\uff0c\u6211\u4eec\u4ecb\u7ecd\u4f7f\u7528\u4f20\u7edf\u7684a [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[227],"class_list":["post-31237","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-227"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u3010Java\u3011\u4f7f\u7528\u591a\u4e2a\u7248\u672c\u7684Java\u7684\u5207\u6362\u65b9\u6cd5 - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"\u5173\u4e8e\u3010Java\u3011\u4f7f\u7528\u591a\u4e2a\u7248\u672c\u7684Java\u7684\u5207\u6362\u65b9\u6cd5\u7684\u6280\u672f\u6587\u7ae0\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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