{"id":349,"date":"2025-09-30T15:15:58","date_gmt":"2025-09-30T07:15:58","guid":{"rendered":"http:\/\/43.139.99.192\/?p=349"},"modified":"2025-09-30T15:22:18","modified_gmt":"2025-09-30T07:22:18","slug":"jdk8%e4%b8%8ejdk21%e5%a4%9a%e7%89%88%e6%9c%ac%e5%85%b1%e5%ad%98","status":"publish","type":"post","link":"http:\/\/43.139.99.192\/index.php\/2025\/09\/30\/jdk8%e4%b8%8ejdk21%e5%a4%9a%e7%89%88%e6%9c%ac%e5%85%b1%e5%ad%98\/","title":{"rendered":"JDK8\u4e0eJDK21\u591a\u7248\u672c\u5171\u5b58"},"content":{"rendered":"\n
\"\"<\/div><\/figure>\n\n\n\n

@echo off
set JAVA_HOME=%JAVA8_HOME%
set Path=%JAVA_HOME%\\bin;%Path%
echo JDK 8 \u5df2\u6fc0\u6d3b\u3002<\/p>\n\n\n\n

\u521b\u5efa switch_jdk21.bat<\/em> \u6587\u4ef6\uff0c\u5185\u5bb9\u5982\u4e0b\uff1a<\/strong><\/p>\n\n\n\n

@echo off
set JAVA_HOME=%JAVA21_HOME%
set Path=%JAVA_HOME%\\bin;%Path%
echo JDK 21 \u5df2\u6fc0\u6d3b\u3002<\/p>\n\n\n\n

<\/p>\n\n\n\n

\u4e00\u3001\u524d\u671f\u51c6\u5907
\u6211\u8fd9\u91cc\u7528\u4e24\u4e2aJDK\u6765\u505a\u6f14\u793a\uff0c\u5206\u522b\u662fJDK8\u548cJDK17(\u672c\u4eba\u5df2\u5b89\u88c5JDK8\uff0c\u6240\u4ee5\u8fd9\u91cc\u53ea\u6f14\u793aJDK17\u7684\u5b89\u88c5)\u3002\u9996\u5148\u53bb\u5b98\u7f51\u4e0b\u8f7d\u6240\u9700\u8981\u7684\u5bf9\u5e94\u7248\u672c\u7684JDK\u5b89\u88c5\u5305\u6216\u8005\u538b\u7f29\u5305\u3002<\/p>\n\n\n\n

\u4e8c\u3001\u5b89\u88c5
\u4e0b\u8f7d\u5b8c\u6210\u540e\uff0c\u5b89\u88c5\u5305\u7684\u8bdd\u76f4\u63a5\u4e0b\u4e00\u6b65\u5b89\u88c5\u5230\u81ea\u5df1\u60f3\u8981\u7684\u76ee\u5f55\u5373\u53ef\uff0c\u538b\u7f29\u5305\u7684\u8bdd\u89e3\u538b\u5230\u81ea\u5df1\u60f3\u8981\u7684\u76ee\u5f55\u5373\u53ef\u3002<\/p>\n\n\n\n

\u4e09\u3001\u6ce8\u610f\u4e8b\u9879
\u89e3\u538b\u7248\u8df3\u8fc7\u6b64\u9879<\/p>\n\n\n\n

\u5982\u679c\u662f\u5b89\u88c5\u7248\uff0c\u8bf7\u52a1\u5fc5\u5230\u4ee5\u4e0b\u4f4d\u7f6e\u5220\u9664\u8fd9\u4e24\u4e2a\u6587\u4ef6\u5939<\/p>\n\n\n\n

C:\\Program Files (x86)\\Common Files\\Oracle\\Java\\javapath
C:\\Program Files\\Common Files\\Oracle\\Java\\javapath<\/p>\n\n\n\n

\u56db\u3001\u914d\u7f6e\u73af\u5883\u53d8\u91cf
\u5728\u7cfb\u7edf\u53d8\u91cf\u4e2d\u65b0\u5efa\u4e00\u4e2aCLASSPATH\uff0c\u6dfb\u52a0\u53d8\u91cf\u503c\u5982\u4e0b
.;%JAVA_HOME%\\lib;%JAVA_HOME%\\lib\\dt.jar;%JAVA_HOME%\\lib\\tools.jar
AI\u751f\u6210\u9879\u76ee
powershell
1
\u5728\u7cfb\u7edf\u53d8\u91cf\u91cc\u9762\u627e\u5230Path\u9009\u9879\uff0c\u7f16\u8f91\uff0c\u52a0\u5165\u4ee5\u4e0b\u53d8\u91cf\u503c
\u6dfb\u52a0\u4e24\u6761<\/p>\n\n\n\n

%JAVA_HOME%\\bin<\/p>\n\n\n\n

%JAVA_HOME%\\jre\\bin
AI\u751f\u6210\u9879\u76ee
java
\u8fd0\u884c
1
2
3
\u5728\u7cfb\u7edf\u53d8\u91cf\u91cc\u65b0\u5efa3\u4e2aJAVA_HOME
\u4e09\u4e2aJAVA_HOME\u5206\u522b\u662f<\/p>\n\n\n\n

\u53d8\u91cf \u503c
JAVA_HOME %JAVA8_HOME% \uff08\u8fd9\u91cc\u8fd9\u6837\u5199\u662f\u4f7f\u7528JAVA8\uff09
JAVA8_HOME D:\\java\\jdk.1.8.0_221 (\u5199\u81ea\u5df1\u7684java8\u7684\u5b89\u88c5\u76ee\u5f55)
JAVA17_HOME D:\\java\\jdk-17 (\u5199\u81ea\u5df1\u7684java17\u7684\u5b89\u88c5\u76ee\u5f55)
JDK\u7684\u5b89\u88c5\u76ee\u5f55\u590d\u5236\u5230bin\u7684\u4e0a\u4e00\u7ea7\u5c31\u53ef\u4ee5\u4e86<\/p>\n\n\n\n

\u4e94\u3001\u6d4b\u8bd5<\/p>\n\n\n\n

    \n
  1. \u5207\u6362JDK\u7248\u672c<\/li>\n<\/ol>\n\n\n\n

    \u4fee\u6539\u5982\u4e0b\u56fe\u6240\u793a\u7684\u503c\uff0c\u4fee\u6539\u4e3a\u4f60\u60f3\u7528\u7684JDK\u7684\u7248\u672c\u5373\u53ef<\/p>\n\n\n\n

      \n
    1. \u6d4b\u8bd5<\/li>\n<\/ol>\n\n\n\n

      Win + R \u8f93\u5165cmd\u6253\u5f00\u547d\u4ee4\u63d0\u793a\u7b26\uff0c\u952e\u5165<\/p>\n\n\n\n

      java -version<\/p>\n\n\n\n

      \u5c31\u53ef\u4ee5\u67e5\u770b\u4f60\u73b0\u5728\u6240\u542f\u7528\u7684jdk\u7248\u672c\u4fe1\u606f\uff08\u6ce8\u610f\uff1a\u4fee\u6539\u5b8c\u73af\u5883\u53d8\u91cf\u540e\uff0c\u5fc5\u987b\u91cd\u65b0\u6253\u5f00\u4e00\u4e2a\u65b0\u7684cmd\u7a97\u53e3\u8fdb\u884c\u67e5\u770b\uff01\uff01\uff01\uff09<\/p>\n\n\n\n

      windows\u5b89\u88c5\u4e24\u4e2a\u6216\u591a\u4e2aJDK\uff0c\u5e76\u5b9e\u73b0\u81ea\u7531\u5207\u6362_windows\u5b89\u88c5\u4e24\u4e2ajdk-CSDN\u535a\u5ba2<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

      @echo offset JAVA_HOME=%JAVA8_HOME%set Path=%JAVA_HOME% […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[2],"class_list":["post-349","post","type-post","status-publish","format-standard","hentry","category-text","tag-java"],"_links":{"self":[{"href":"http:\/\/43.139.99.192\/index.php\/wp-json\/wp\/v2\/posts\/349","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/43.139.99.192\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/43.139.99.192\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/43.139.99.192\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/43.139.99.192\/index.php\/wp-json\/wp\/v2\/comments?post=349"}],"version-history":[{"count":2,"href":"http:\/\/43.139.99.192\/index.php\/wp-json\/wp\/v2\/posts\/349\/revisions"}],"predecessor-version":[{"id":352,"href":"http:\/\/43.139.99.192\/index.php\/wp-json\/wp\/v2\/posts\/349\/revisions\/352"}],"wp:attachment":[{"href":"http:\/\/43.139.99.192\/index.php\/wp-json\/wp\/v2\/media?parent=349"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/43.139.99.192\/index.php\/wp-json\/wp\/v2\/categories?post=349"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/43.139.99.192\/index.php\/wp-json\/wp\/v2\/tags?post=349"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}