{"id":63731,"date":"2025-04-29T12:43:58","date_gmt":"2025-04-29T04:43:58","guid":{"rendered":"https:\/\/fwq.ai\/blog\/63731\/"},"modified":"2025-04-29T12:43:58","modified_gmt":"2025-04-29T04:43:58","slug":"linux%e6%80%8e%e4%b9%88%e6%9f%a5%e7%9c%8bjdk%e7%89%88%e6%9c%ac-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/63731\/","title":{"rendered":"linux\u600e\u4e48\u67e5\u770bjdk\u7248\u672c"},"content":{"rendered":"<blockquote><p>\n  \u5728 linux \u4e2d\u67e5\u770b jdk \u7248\u672c\u7684\u65b9\u6cd5\u6709\uff1a\u8fd0\u884c &#8220;java -version&#8221; \u547d\u4ee4\u3002\u8fd0\u884c &#8220;javac -version&#8221; \u547d\u4ee4\uff08\u4ec5\u9002\u7528\u4e8e\u5df2\u5b89\u88c5 jdk \u7684\u7cfb\u7edf\uff09\u3002\u68c0\u67e5 &#8220;\/usr\/lib\/jvm&#8221; \u76ee\u5f55\u4e2d\u7684\u6587\u4ef6\u3002\u4f7f\u7528 &#8220;which java&#8221; \u547d\u4ee4\u67e5\u627e java \u547d\u4ee4\u7684\u8def\u5f84\u3002\u4f7f\u7528 &#8220;env | grep java_home&#8221; \u547d\u4ee4\u67e5\u770b java_home \u73af\u5883\u53d8\u91cf\u3002\u5bf9\u4e8e\u4f7f\u7528 update-alternatives \u7ba1\u7406 java \u5b89\u88c5\u7684\u7cfb\u7edf\uff0c\u8fd0\u884c &#8220;update-alternatives\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202406\/04\/2024060414361945051.jpg\" class=\"aligncenter\" title=\"linux\u600e\u4e48\u67e5\u770bjdk\u7248\u672c\u63d2\u56fe\" alt=\"linux\u600e\u4e48\u67e5\u770bjdk\u7248\u672c\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u5728 Linux \u4e2d\u67e5\u770b JDK \u7248\u672c<\/strong><\/p>\n<p>\u5728 Linux \u7cfb\u7edf\u4e2d\u67e5\u770b\u5df2\u5b89\u88c5\u7684 JDK \u7248\u672c\u6709\u4ee5\u4e0b\u51e0\u79cd\u65b9\u6cd5\uff1a<\/p>\n<p><strong>1. Java -version \u547d\u4ee4<\/strong><\/p>\n<p>\u8fd9\u662f\u6700\u5e38\u89c1\u7684\u547d\u4ee4\uff0c\u5b83\u76f4\u63a5\u663e\u793a Java \u8fd0\u884c\u65f6\u73af\u5883 (JRE) \u548c Java \u5f00\u53d1\u5de5\u5177\u5305 (JDK) \u7684\u7248\u672c\u3002<\/p>\n<pre>java -version<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>2. javac -version \u547d\u4ee4<\/strong><\/p>\n<p>\u6b64\u547d\u4ee4\u4ec5\u9002\u7528\u4e8e\u5df2\u5b89\u88c5 JDK \u7684\u7cfb\u7edf\uff0c\u5b83\u663e\u793a Java \u7f16\u8bd1\u5668\u7684\u7248\u672c\uff0c\u8be5\u7f16\u8bd1\u5668\u662f JDK \u7684\u4e00\u90e8\u5206\u3002<\/p>\n<pre>javac -version<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>3. \u68c0\u67e5\u6587\u4ef6\u7cfb\u7edf<\/strong><\/p>\n<p>\u5728 Ubuntu \u7cfb\u7edf\u4e2d\uff0c\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0cJDK \u5b89\u88c5\u5728 \/usr\/lib\/jvm \u76ee\u5f55\u4e0b\u3002\u60a8\u53ef\u4ee5\u67e5\u770b\u8be5\u76ee\u5f55\u4ee5\u67e5\u770b\u5df2\u5b89\u88c5\u7684 JDK \u7248\u672c\uff1a<\/p>\n<pre>ls \/usr\/lib\/jvm<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>4. \u4f7f\u7528 which \u547d\u4ee4\u67e5\u627e Java \u547d\u4ee4<\/strong><\/p>\n<p>which \u547d\u4ee4\u53ef\u4ee5\u627e\u5230 Java \u547d\u4ee4\u7684\u8def\u5f84\uff0c\u5176\u4e2d\u5305\u542b JDK \u7248\u672c\u4fe1\u606f\uff1a<\/p>\n<pre>which java<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>5. env \u547d\u4ee4<\/strong><\/p>\n<p>env \u547d\u4ee4\u53ef\u4ee5\u663e\u793a\u7cfb\u7edf\u73af\u5883\u53d8\u91cf\uff0c\u5176\u4e2d\u53ef\u80fd\u5305\u542b JAVA_HOME \u53d8\u91cf\uff0c\u8be5\u53d8\u91cf\u6307\u5411 JDK \u7684\u5b89\u88c5\u76ee\u5f55\u3002<\/p>\n<pre>env | grep JAVA_HOME<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>6. update-alternatives \u547d\u4ee4<\/strong><\/p>\n<p>\u5bf9\u4e8e\u4f7f\u7528 <strong>update-alternatives<\/strong> \u7ba1\u7406 Java \u5b89\u88c5\u7684\u7cfb\u7edf\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u67e5\u770b\u5f53\u524d\u7684 JDK \u7248\u672c\uff1a<\/p>\n<pre>update-alternatives --query java<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u901a\u8fc7\u4f7f\u7528\u4e0a\u8ff0\u65b9\u6cd5\u4e2d\u7684\u4efb\u4f55\u4e00\u79cd\uff0c\u60a8\u90fd\u53ef\u4ee5\u8f7b\u677e\u5730\u5728 Linux \u7cfb\u7edf\u4e2d\u786e\u5b9a\u5df2\u5b89\u88c5\u7684 JDK \u7248\u672c\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u600e\u4e48\u67e5\u770bjdk\u7248\u672c\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8FDCServers\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728 linux \u4e2d\u67e5\u770b jdk \u7248\u672c\u7684\u65b9\u6cd5\u6709\uff1a\u8fd0\u884c &#8220;java -version&#8221; \u547d\u4ee4\u3002\u8fd0\u884c &#8220;javac -version&#8221; \u547d\u4ee4\uff08\u4ec5\u9002\u7528\u4e8e\u5df2\u5b89\u88c5 jdk \u7684\u7cfb\u7edf\uff09\u3002\u68c0\u67e5 &#8220;\/usr\/lib\/jvm&#8221; \u76ee\u5f55\u4e2d\u7684\u6587\u4ef6\u3002\u4f7f\u7528 &#8220;which java&#8221; \u547d\u4ee4\u67e5\u627e java \u547d\u4ee4\u7684\u8def\u5f84\u3002\u4f7f\u7528 &#8220;env | grep java_home&#8221; \u547d\u4ee4\u67e5\u770b java_home \u73af\u5883\u53d8\u91cf\u3002\u5bf9\u4e8e\u4f7f\u7528 update-alternatives \u7ba1\u7406 java \u5b89\u88c5\u7684\u7cfb\u7edf\uff0c\u8fd0\u884c &#8220;update-alternatives \u5982\u4f55\u5728 Linux \u4e2d\u67e5\u770b JDK \u7248\u672c \u5728 Linux \u7cfb\u7edf\u4e2d\u67e5\u770b\u5df2\u5b89\u88c5\u7684 JDK \u7248\u672c\u6709\u4ee5\u4e0b\u51e0\u79cd\u65b9\u6cd5\uff1a 1. Java -version \u547d\u4ee4 \u8fd9\u662f\u6700\u5e38\u89c1\u7684\u547d\u4ee4\uff0c\u5b83\u76f4\u63a5\u663e\u793a Java \u8fd0\u884c\u65f6\u73af\u5883 (JRE) \u548c Java \u5f00\u53d1\u5de5\u5177\u5305 (JDK) \u7684\u7248\u672c\u3002 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-63731","post","type-post","status-publish","format-standard","hentry","category-os"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/63731","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=63731"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/63731\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=63731"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=63731"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=63731"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}