{"id":12840,"date":"2023-09-25T20:38:44","date_gmt":"2023-09-25T12:38:44","guid":{"rendered":"https:\/\/92it.top\/?p=12840"},"modified":"2023-09-25T20:38:44","modified_gmt":"2023-09-25T12:38:44","slug":"%e6%b5%85%e8%b0%88%e4%b8%a4%e4%b8%aajar%e5%8c%85%e4%b8%ad%e5%8c%85%e5%90%ab%e5%ae%8c%e5%85%a8%e7%9b%b8%e5%90%8c%e7%9a%84%e5%8c%85%e5%90%8d%e5%92%8c%e7%b1%bb%e5%90%8d%e7%9a%84%e5%8a%a0%e8%bd%bd","status":"publish","type":"post","link":"https:\/\/92it.top\/?p=12840","title":{"rendered":"\u6d45\u8c08\u4e24\u4e2ajar\u5305\u4e2d\u5305\u542b\u5b8c\u5168\u76f8\u540c\u7684\u5305\u540d\u548c\u7c7b\u540d\u7684\u52a0\u8f7d\u95ee\u9898"},"content":{"rendered":"\n<p><strong>\u524d\u8a00<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p>\u6700\u8fd1\u5de5\u4f5c\u4e2d\u9047\u5230\u4e86\u4e00\u4e2a\u9879\u76ee\u5de5\u7a0b\u95ee\u9898\uff0c\u5728\u542f\u52a8jvm\u7684classpath\u6709\u4e24\u4e2a\u4e0d\u540c\u7248\u672c\u7684jwt\u7684jar\u5305\uff0c\u5728\u8c03\u7528\u5904\u62a5java.lang.NoSuchMethodError: \u5176Classpath\u6709\u4e24\u4e2a\u4e0d\u540c\u7248\u672c\u7684jar\u5305\uff0c\u91cc\u9762\u90fd\u6709\u8fd9\u4e2a\u7c7b\uff0c\u9ad8\u7248\u672c\u7684jar\u91cc\u9762\u6ca1\u6709\u8fd9\u4e2aMethod\uff0c\u4f4e\u7248\u672c\u6709\u8fd9\u4e2aMethod\u3002\u6700\u7ec8\u6ca1\u6709\u52a0\u8f7d\u8fd9\u4e2a\u9ad8\u7248\u672c\u7684Method<br>\u731c\u6d4b\u6b64\u95ee\u9898\u5c31\u662f \u201c\u5168\u9650\u5b9a\u7c7b\u540d\u201d \u5b8c\u5168\u4e00\u6837\uff0cCloassloader\u53ea\u52a0\u8f7d\u4e86\u9ad8\u7248\u672c\u7684jar\u5305\u3002<br><\/p>\n\n\n\n<p>\u5728Java\u5e94\u7528\u7a0b\u5e8f\u4e2d\uff0c\u5982\u679c\u4e24\u4e2ajar\u5305\u4e2d\u5305\u542b\u4e86\u5b8c\u5168\u76f8\u540c\u7684\u5305\u540d\u548c\u7c7b\u540d\uff0c\u90a3\u4e48\u5728\u52a0\u8f7d\u8fd9\u7c7b\u65f6\u5c31\u4f1a\u51fa\u95ee\u9898\u3002\u672c\u6587\u5c06\u7ec6\u8bb2\u89e3\u8fd9\u4e2a\u95ee\u9898\uff0c\u5e76\u63d0\u4f9b\u4e24\u4e2a\u793a\u4f8b\u8bf4\u660e\u3002<\/p>\n\n\n\n<p><strong>\u95ee\u9898\u63cf\u8ff0<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p>\u5f53\u4e24\u4e2ajar\u5305\u4e2d\u5305\u542b\u4e86\u5b8c\u5168\u76f8\u7684\u5305\u540d\u548c\u540d\u65f6\uff0cJava\u865a\u62df\u673a\uff08JVM\uff09\u5c06\u65e0\u6cd5\u533a\u5206\u8fd9\u4e9b\u7c7b\uff0c\u56e0\u4e3a\u5b83\u4eec\u7684\u5168\u9650\u5b9a\u540d\u662f\u76f8\u540c\u7684\u8fd9\u5c06\u5bfc\u4ee5\u4e0b\u95ee\u9898\uff1a<\/p>\n\n\n\n<ul><li>\u5982\u679c\u5728\u4ee3\u7801\u4e2d\u4f7f\u7528\u4e86\u8fd9\u4e9b\u7c7b\uff0c\u90a3\u4e48JVM\u5c06\u6cd5\u786e\u5b9a\u8981\u52a0\u8f7d\u54ea\u4e2a\u7c7b\uff0c\u4ece\u800c\u5bfc\u81f4\u7f16\u8bd1\u9519\u8bef\u6216\u8fd0\u884c\u65f6\u9519\u8bef\u3002<\/li><li>\u5982\u679c\u5728\u4e24\u4e2ajar\u5305\u4e2d\u7684\u7c7b\u5177\u6709\u4e0d\u540c\u7684\u5b9e\u73b0\uff0c\u90a3\u4e48\u5728\u8fd0\u884c\u65f6\u5c06\u65e0\u6cd5\u786e\u5b9a\u4f7f\u7528\u54ea\u4e2a\u5b9e\u73b0\u3002<\/li><\/ul>\n\n\n\n<p><strong>\u9a8c\u8bc1jvm\u662f\u5982\u4f55\u52a0\u8f7dclasspath\u4e2d\u540c\u7c7b\u540c\u5168\u9650\u5b9a\u7c7b\u540d\u7684\u8fc7\u7a0b<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p><strong>\u51c6\u5907\u5de5\u7a0b<\/strong><\/p>\n\n\n\n<p>\u51c6\u5907\u4e09\u4e2a\u4e0d\u540c\u7684jar\uff0c\u91cc\u9762\u90fd\u6709\u540c\u6837\u4e00\u4e2a\u7c7b <code>Car<\/code>\uff0c\u5982\u4e0b\uff1a<\/p>\n\n\n\n<ul><li>demo-audi-1.0.jar<\/li><li>demo-audi-2.0.jar<\/li><li>demo-mercedes-1.0.jar<\/li><\/ul>\n\n\n\n<p>\u8fd9\u4e09\u4e2a\u5de5\u7a0b\u62e5\u6709\u540c\u6837\u4e00\u4e2a<code>class: com.example.demo.Car<\/code><\/p>\n\n\n\n<p>demo-audi-1.0.jar\u5185\u5bb9<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public class Car {\n\n    private static final String version = \"A4L\";\n\n    public String getVersion() {\n        return version;\n    }\n\n    public String getName() {\n        return \"audi\";\n    }\n\n    public Integer limitSpeed() {\n        return 100;\n    }\n\n    public String seatPerson(Integer a) {\n        return \"\u53ef\u4ee5\u5750 \uff1a\" + a;\n    }\n}\n<\/pre>\n\n\n\n<p>demo-audi-2.0.jar\u5185\u5bb9<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public class Car {\n\n    private static final String version = \"A6L\";\n\n    public String getVersion() {\n        return version;\n    }\n\n    public String getName() {\n        return \"audi\";\n    }\n\n    public Integer limitSpeed() {\n        return 140;\n    }\n\n    public String seatPerson() {\n        return \"\u53ef\u4ee5\u5750 \uff1a5\";\n    }\n}\n<\/pre>\n\n\n\n<p>demo-mercedes-1.0.jar\u5185\u5bb9<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public class Car {\n\n    private static final String version = \"E300L\";\n\n    public String getVersion() {\n        return version;\n    }\n\n    public String getName() {\n        return \"mercedes\";\n    }\n\n    public Integer limitSpeed() {\n        return 135;\n    }\n\n    public String hasPerson() {\n        return \"\u80fd\u8212\u670d\u7684\u5750 \uff1a4\";\n    }\n}\n<\/pre>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/92it.top\/wp-content\/uploads\/2023\/09\/\u56fe\u7247-60-1024x895.png\" alt=\"\" class=\"wp-image-12841\" width=\"428\" height=\"374\" srcset=\"https:\/\/92it.top\/wp-content\/uploads\/2023\/09\/\u56fe\u7247-60-1024x895.png 1024w, https:\/\/92it.top\/wp-content\/uploads\/2023\/09\/\u56fe\u7247-60-300x262.png 300w, https:\/\/92it.top\/wp-content\/uploads\/2023\/09\/\u56fe\u7247-60-768x671.png 768w, https:\/\/92it.top\/wp-content\/uploads\/2023\/09\/\u56fe\u7247-60-830x725.png 830w, https:\/\/92it.top\/wp-content\/uploads\/2023\/09\/\u56fe\u7247-60-230x201.png 230w, https:\/\/92it.top\/wp-content\/uploads\/2023\/09\/\u56fe\u7247-60-350x306.png 350w, https:\/\/92it.top\/wp-content\/uploads\/2023\/09\/\u56fe\u7247-60-480x419.png 480w, https:\/\/92it.top\/wp-content\/uploads\/2023\/09\/\u56fe\u7247-60.png 1300w\" sizes=\"(max-width: 428px) 100vw, 428px\" \/><\/figure><\/div>\n\n\n\n<p><strong>\u5f00\u59cb\u6f14\u793a\u529f\u80fd<\/strong><\/p>\n\n\n\n<p>\u51c6\u5907Example\u7c7b<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public class Example {\n\n    public static void main(String[] args) {\n        Car car = new Car();\n        System.out.println(\"\u5f53\u524d\u8f66\u8f86\u7248\u672c\uff1a\" + car.getVersion());\n        System.out.println(\"\u5f53\u524d jar \u5305\u8def\u5f84 \uff1a \");\n        System.out.println(car.getClass().getProtectionDomain().getCodeSource().getLocation().getPath());\n        Method[] declaredMethods = car.getClass().getDeclaredMethods();\n        for (Method declaredMethod : declaredMethods) {\n            System.out.println(\"------------------\");\n            System.out.println(\"method name: \" + declaredMethod.getName());\n            List&lt;String> collect = Arrays.stream(declaredMethod.getParameterTypes()).map(Class::getName).collect(Collectors.toList());\n            if(!collect.isEmpty()) {\n                System.out.println(\"parameter type : \" + collect);\n            }\n            System.out.println(\"------------------\");\n        }\n    }\n}\n<\/pre>\n\n\n\n<p>\u51c6\u5907Classpath<\/p>\n\n\n\n<p>test \u76ee\u5f55<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">demo-audi-1.0.jar     demo-audi-2.0.jar     demo-example-1.0.jar  demo-mercedes-1.0.jar<\/pre>\n\n\n\n<p>\u6f14\u793a\u529f\u80fd<\/p>\n\n\n\n<ul><li>\u81ea\u7136\u987a\u5e8f\uff0c*\u6765\u4ee3\u66ff\u6240\u6709jar<\/li><\/ul>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">java -classpath \"\/test\/*\"  com.example.demo.Example\n\n\u5f53\u524d\u8f66\u8f86\u7248\u672c\uff1aA4L\n\u5f53\u524d jar \u5305\u8def\u5f84 \uff1a\n\/test\/demo-audi-1.0.jar\n------------------\nmethod name: getName\n------------------\n------------------\nmethod name: getVersion\n------------------\n------------------\nmethod name: limitSpeed\n------------------\n------------------\nmethod name: seatPerson\nparameter type : [java.lang.Integer]\n------------------\n\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014<\/pre>\n\n\n\n<p>\u8fd0\u884c\u65f6\uff0cJVM\u52a0\u8f7d\u7c7bCar\uff0c\u6839\u636e\u3010\u64cd\u4f5c\u7cfb\u7edf\u3011\u7684\u9009\u62e9\uff0c\u672c\u6b21\u52a0\u8f7d\u4e86demo-audi-1.0.jar\u7684<code>com.example.demo.Car<\/code>\u7c7b\u7684class\u6587\u4ef6<\/p>\n\n\n\n<ul><li>\u624b\u52a8\u6539\u53d8jar\u540d\u79f0\uff0c\u6539\u53d8\u987a\u5e8f<\/li><\/ul>\n\n\n\n<p>\u5f53\u628a <strong>demo-audi-1.0.jar<\/strong> \u91cd\u547d\u540d\u4e3a <strong>zemo-audi-1.0.jar<\/strong> \uff0c<strong>\u201cd\u201d<\/strong> \u6539\u6210 <strong>\u201cz\u201d<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\u279c  test mv demo-audi-1.0.jar zemo-audi-1.0.jar\n\u279c  test java -classpath \"\/test\/*\"  com.example.demo.Example\n\u5f53\u524d\u8f66\u8f86\u7248\u672c\uff1aA6L\n\u5f53\u524d jar \u5305\u8def\u5f84 \uff1a\n\/test\/demo-audi-2.0.jar\n------------------\nmethod name: getName\n------------------\n------------------\nmethod name: limitSpeed\n------------------\n------------------\nmethod name: getVersion\n------------------\n------------------\nmethod name: seatPerson\n------------------<\/pre>\n\n\n\n<p>\u8fd0\u884c\u65f6\uff0cJVM\u52a0\u8f7d\u7c7bCar\uff0c\u6839\u636e\u3010\u64cd\u4f5c\u7cfb\u7edf\u3011\u7684\u9009\u62e9\uff0c\u672c\u6b21\u52a0\u8f7d\u4e86demo-audi-2.0.jar\u7684<code>com.example.demo.Car<\/code>\u7c7b\u7684class\u6587\u4ef6<\/p>\n\n\n\n<ul><li>\u624b\u52a8\u6539\u53d8jar\u540d\u79f0\u53ca\u7248\u672c\uff0c\u6539\u53d8\u987a\u5e8f<\/li><\/ul>\n\n\n\n<p>\u5f53\u628a <strong>demo-audi-2.0.jar<\/strong> \u91cd\u547d\u540d\u4e3a <strong>demo-mercedes-2.0.jar<\/strong> \uff0c<strong>\u201caudi\u201d<\/strong> \u6539\u6210 <strong>\u201cmercedes\u201d<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">[\/test]# mv demo-audi-2.0.jar zemo-mercedes-2.0.jar\n[\/test]# ls demo-example-1.0.jar  demo-mercedes-1.0.jar demo-mercedes-2.0.jar zemo-audi-1.0.jar\n[\/test]# java -classpath \"\/test\/*\"  com.example.demo.Example\n\u5f53\u524d\u8f66\u8f86\u7248\u672c\uff1aA6L\n\u5f53\u524d jar \u5305\u8def\u5f84 \uff1a\n\/test\/demo-mercedes-2.0.jar\n------------------\nmethod name: getName\n------------------\n------------------\nmethod name: getVersion\n------------------\n------------------\nmethod name: limitSpeed\n------------------\n------------------\nmethod name: seatPerson\n------------------\n<\/pre>\n\n\n\n<p>\u8fd0\u884c\u65f6\uff0cJVM\u52a0\u8f7d\u7c7bCar\uff0c\u6839\u636e\u3010\u64cd\u4f5c\u7cfb\u7edf\u3011\u7684\u9009\u62e9\uff0c\u672c\u6b21\u52a0\u8f7d\u4e86demo-mercedes-2.0.jar\u7684<code>com.example.demo.Car<\/code>\u7c7b\u7684class\u6587\u4ef6<\/p>\n\n\n\n<ul><li>\u53ea\u4fdd\u7559\u4e00\u4e2ajar<\/li><\/ul>\n\n\n\n<p>\u5982\u679c\u628aaudi\u7684\u4e24\u4e2ajar\u79fb\u52a8\u51fa\u53bb\uff0cclasspath\u91cc\u9762\u53ea\u5269\u4e0b demo-mercedes-1.0.jar \u65f6<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\u5f53\u524d\u8f66\u8f86\u7248\u672c\uff1aE300L\n\u5f53\u524d jar \u5305\u8def\u5f84 \uff1a\n\/test\/demo-mercedes-1.0.jar\n------------------\nmethod name: getName\n------------------\n------------------\nmethod name: limitSpeed\n------------------\n------------------\nmethod name: getVersion\n------------------\n------------------\nmethod name: hasPerson\n------------------\n<\/pre>\n\n\n\n<p>\u8fd0\u884c\u65f6\uff0cJVM\u52a0\u8f7d\u7c7bCar\uff0c\u6839\u636e\u3010\u64cd\u4f5c\u7cfb\u7edf\u3011\u7684\u9009\u62e9\uff0c\u672c\u6b21\u52a0\u8f7d\u4e86demo-mercedes-1.0.jar\u7684<code>com.example.demo.Car<\/code>\u7c7b\u7684class\u6587\u4ef6<\/p>\n\n\n\n<p><strong>\u624b\u52a8\u6307\u5b9aClasspath\u7684\u5305\u5148\u540e\u987a\u5e8f\uff08 \u91cd\u70b9\uff09<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\n# \u5f53 demo-audi-1.0.jar\u5728\u7b2c\u4e00\u4e2a\u65f6\njava -classpath \/test\/demo-audi-1.0.jar:\/test\/demo-audi-2.0.jar:\/test\/demo-mercedes-1.0.jar:\/test\/demo-example-1.0.jar com.example.demo.Example\n\n\u5f53\u524d\u8f66\u8f86\u7248\u672c\uff1aA4L\n\u5f53\u524d jar \u5305\u8def\u5f84 \uff1a\n\/test\/demo-audi-1.0.jar\n------------------\nmethod name: getName\n------------------\n------------------\nmethod name: limitSpeed\n------------------\n------------------\nmethod name: getVersion\n------------------\n------------------\nmethod name: seatPerson\nparameter type : [java.lang.Integer]\n\n# \u5f53 demo-audi-2.0.jar\u5728\u7b2c\u4e00\u4e2a\u65f6\njava -classpath \/test\/demo-audi-2.0.jar:\/test\/demo-audi-1.0.jar:\/test\/demo-mercedes-1.0.jar:\/test\/demo-example-1.0.jar com.example.demo.Example\n\n\u5f53\u524d\u8f66\u8f86\u7248\u672c\uff1aA6L\n\u5f53\u524d jar \u5305\u8def\u5f84 \uff1a\n\/test\/demo-audi-2.0.jar\n------------------\nmethod name: getName\n------------------\n------------------\nmethod name: limitSpeed\n------------------\n------------------\nmethod name: getVersion\n------------------\n------------------\nmethod name: seatPerson\n------------------\n\n# \u5f53 demo-mercedes-1.0.jar\u5728\u7b2c\u4e00\u4e2a\u65f6\njava -classpath \/test\/demo-mercedes-1.0.jar:\/test\/demo-audi-2.0.jar:\/test\/demo-audi-1.0.jar:\/test\/demo-example-1.0.jar com.example.demo.Example\n\u5f53\u524d\u8f66\u8f86\u7248\u672c\uff1aE300L\n\u5f53\u524d jar \u5305\u8def\u5f84 \uff1a\n\/test\/demo-mercedes-1.0.jar\n------------------\nmethod name: getName\n------------------\n------------------\nmethod name: limitSpeed\n------------------\n------------------\nmethod name: getVersion\n------------------\n------------------\nmethod name: hasPerson\n------------------\n<\/pre>\n\n\n\n<p><strong>\u7ed3\u8bba<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p>\u6839\u636eJVM\u7684\u53cc\u4eb2\u59d4\u6d3e\u6a21\u578b\uff0c\u9ed8\u8ba4\u60c5\u51b5\u4e0b\u76f8\u540c\u5168\u9650\u5b9a\u7c7b\u540d\u7684\u7c7b\u53ea\u4f1a\u52a0\u8f7d\u4e00\u6b21\uff0c\u56e0\u6b64JVM\u52a0\u8f7dCar\u7c7b\u65f6\u53ea\u4f1a\u4ecedemo-audi-1.0.jar\u6216demo-audi-2.0.jar\u4ee5\u53cademo-mercedes-1.0.jar\u9009\u4e00\u4e2a\uff1b<\/p>\n\n\n\n<p>\u540c\u540d\u7684\u4e24\u4e2aCar\u7c7b\u6765\u81ea\u4e0d\u540c\u7684\u4e09\u4e2aJar\u5305\uff0c\u4ed6\u4eec\u662f\u5e73\u7ea7\u7684\uff0c\u6839\u636eJVM\u7684\u7c7b\u52a0\u8f7d\u673a\u5236\u2014\u2014\u53cc\u4eb2\u59d4\u6d3e\u6a21\u578b\uff0c\u76f8\u540c\u5168\u9650\u5b9a\u7c7b\u540d\u7684\u7c7b\u9ed8\u8ba4\u53ea\u4f1a\u52a0\u8f7d\u4e00\u6b21\uff08\u9664\u975e\u624b\u52a8\u7834\u574f\u53cc\u4eb2\u59d4\u6d3e\u6a21\u578b\uff09\uff1b<\/p>\n\n\n\n<p>Jar\u5305\u4e2d\u7684\u7c7b\u662f\u4f7f\u7528AppClassLoader\u52a0\u8f7d\u7684\uff0c\u800c\u7c7b\u52a0\u8f7d\u5668\u4e2d\u6709\u4e00\u4e2a\u547d\u540d\u7a7a\u95f4\u7684\u6982\u5ff5\uff0c\u540c\u4e00\u4e2a\u7c7b\u52a0\u8f7d\u5668\u4e0b\uff0c\u76f8\u540c\u5305\u540d\u548c\u7c7b\u540d\u7684class\u53ea\u4f1a\u88ab\u52a0\u8f7d\u4e00\u6b21\uff0c\u5982\u679c\u5df2\u7ecf\u52a0\u8f7d\u8fc7\u4e86\uff0c\u76f4\u63a5\u4f7f\u7528\u52a0\u8f7d\u8fc7\u7684\uff1b<\/p>\n\n\n\n<p>\u5982\u679c\u4f9d\u8d56\u4e2d\u6709\u591a\u4e2a\u5168\u9650\u5b9a\u7c7b\u540d\u76f8\u540c\u7684\u7c7b\uff0c\u90a3JVM\u4f1a\u52a0\u8f7d\u54ea\u4e00\u4e2a\u7c7b\u5462\uff1f<br>\u6bd4\u8f83\u9760\u8c31\u7684\u8bf4\u6cd5\u662f\uff0c\u64cd\u4f5c\u7cfb\u7edf\u672c\u8eab\uff0c\u63a7\u5236\u4e86Jar\u5305\u7684\u9ed8\u8ba4\u52a0\u8f7d\u987a\u5e8f\uff1b\u4e5f\u5c31\u662f\u8bf4\uff0c\u5bf9\u4e8e\u6211\u4eec\u6765\u8bf4\u662f\u4e0d\u660e\u786e\u4e0d\u786e\u5b9a\u7684\uff01<\/p>\n\n\n\n<p>\u800cJar\u5305\u7684\u52a0\u8f7d\u987a\u5e8f\uff0c\u662f\u8ddfclasspath\u8fd9\u4e2a\u53c2\u6570\u6709\u5173\uff0c\u5f53\u4f7f\u7528idea\u542f\u52a8springboot\u7684\u670d\u52a1\u65f6\uff0c\u53ef\u4ee5\u770b\u5230classpath\u53c2\u6570\u7684\uff1b\u5305\u8def\u5f84\u8d8a\u9760\u524d\uff0c\u8d8a\u5148\u88ab\u52a0\u8f7d\uff1b<\/p>\n\n\n\n<p>\u6362\u53e5\u8bdd\u8bf4\uff0c\u5982\u679c\u9760\u524d\u7684Jar\u5305\u91cc\u7684\u7c7b\u88ab\u52a0\u8f7d\u4e86\uff0c\u540e\u9762Jar\u5305\u91cc\u6709\u540c\u540d\u540c\u8def\u5f84\u7684\u7c7b\uff0c\u5c31\u4f1a\u88ab\u5ffd\u7565\u6389\uff0c\u4e0d\u4f1a\u88ab\u52a0\u8f7d\uff1b<\/p>\n\n\n\n<p><strong>\u89e3\u51b3\u65b9\u6848<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p>\u4e3a\u4e86\u89e3\u51b3\u4e2a\u95ee\u9898\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u65b9\u6cd5\uff1a<\/p>\n\n\n\n<ul><li>\u4f7f\u7528\u4e0d\u540c\u7684\u5305\u540d<\/li><\/ul>\n\n\n\n<p>\u5c06\u4e24\u4e2ajar\u5305\u4e2d\u7684\u7c7b\u653e\u5728\u4e0d\u540c\u7684\u5305\u4e2d\uff0c\u4ee5\u907f\u514d\u5305\u540d\u548c\u7c7b\u540d\u7684\u51b2\u7a81\u3002\u4f8b\u5982\uff0c\u5982\u679c\u4e24\u4e2ajar\u5305\u4e2d\u90fd\u5305\u542b\u4e86\u540d\u4e3a<code>com.example.MyClass<\/code>\u7684\u7c7b\uff0c\u90a3\u4e48\u6211\u4eec\u53ef\u4ee5\u5c06\u5176\u4e2d\u4e00\u4e2a\u7c7b\u653e\u5728<code>com.example2.MyClass<\/code>\u5305\u4e2d\u3002<\/p>\n\n\n\n<ul><li>\u4f7f\u7528\u7c7b\u52a0\u8f7d\u5668<\/li><\/ul>\n\n\n\n<p>\u4f7f\u7528\u4e0d\u540c\u7684\u7c7b\u52a0\u8f7d\u5668\u6765\u52a0\u8f7d\u8fd9\u4e9b\u7c7b\uff0c\u4ee5\u907f\u514d\u51b2\u7a81\u3002\u4f8b\u5982\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u81ea\u5b9a\u4e49\u7684\u7c7b\u52a0\u8f7d\u5668\u6765\u52a0\u8f7d\u5176\u4e2d\u4e00\u4e2ajar\u5305\u4e2d\u7684\u7c7b\uff0c\u4ece\u800c\u907f\u514d\u4e0e\u53e6\u4e00\u4e2ajar\u5305\u4e2d\u7684\u7c7b\u53d1\u751f\u51b2\u7a81\u3002<\/p>\n\n\n\n<p><strong>\u793a\u4f8b\u8bf4\u660e<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p>\u4ee5\u4e0b\u662f\u4e24\u4e2a\u793a\u4f8b\u8bf4\u660e\uff0c\u6f14\u793a\u4e86\u4e24\u4e2ajar\u5305\u4e2d\u5305\u542b\u76f8\u540c\u7684\u5305\u548c\u7c7b\u540d\u65f6\u53ef\u80fd\u51fa\u73b0\u7684\u95ee\u9898\u3002<\/p>\n\n\n\n<ul><li>\u793a\u4f8b1\uff1a\u7f16\u8bd1\u9519\u8bef<\/li><\/ul>\n\n\n\n<p>\u5047\u8bbe\u6211\u4eec\u6709\u4e24\u4e2ajar\u5305\uff1a<code>lib1.jar<\/code>\u548c<code>lib2.jar<\/code>\uff0c\u5b83\u4eec\u90fd\u5305\u542b\u4e86\u540d\u4e3a<code>com.example.MyClass<\/code>\u7684\u7c7b\u3002\u5982\u679c\u6211\u4eec\u5728\u4ee3\u7801\u4e2d\u4f7f\u7528\u4e86\u8fd9\u4e2a\u7c7b\uff0c\u90a3\u4e48\u7f16\u8bd1\u5668\u5c06\u65e0\u6cd5\u786e\u5b9a\u8981\u4f7f\u7528\u54ea\u4e2a\u7c7b\uff0c\u4ece\u800c\u5bfc\u81f4\u7f16\u8bd1\u9519\u8bef\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">import com.example.MyClass;\n\npublic class Main {\n  public static void main(String[] args) {\n    MyClass myClass = new MyClass(); \/\/ \u7f16\u8bd1\u9519\u8bef\uff1a\u65e0\u6cd5\u786e\u5b9a\u8981\u4f7f\u7528\u54ea\u4e2aMyClass\u7c7b\n    myClass.doSomething();\n  }\n}\n<\/pre>\n\n\n\n<ul><li>\u793a\u4f8b2\uff1a\u8fd0\u884c\u65f6\u9519\u8bef<\/li><\/ul>\n\n\n\n<p>\u5047\u8bbe\u6211\u4eec\u6709\u4e24\u4e2ajar\u5305\uff1a<code>lib1.jar<\/code>\u548c<code>lib2.jar<\/code>\uff0c\u5b83\u4eec\u90fd\u5305\u542b\u4e86\u540d\u4e3a<code>com.example.MyClass<\/code>\u7684\u7c7b\u3002\u5982\u679c\u8fd9\u4e9b\u7c7b\u5177\u6709\u4e0d\u540c\u7684\u5b9e\u73b0\uff0c\u90a3\u4e48\u5728\u8fd0\u884c\u65f6\u5c06\u65e0\u6cd5\u786e\u5b9a\u4f7f\u7528\u54ea\u4e2a\u5b9e\u73b0\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">import com.example.MyClass;\n\npublic class Main {\n  public static void main(String[]) {\n    MyClass myClass = new MyClass(); \/\/ \u8fd0\u884c\u65f6\u9519\u8bef\uff1a\u65e0\u6cd5\u786e\u5b9a\u8981\u4f7f\u7528\u54ea\u4e2aMyClass\u7c7b\n    myClass.doSomething();\n  }\n}\n<\/pre>\n\n\n\n<p>\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u5982\u679c<code>lib1.jar<\/code>\u548c<code>lib2.jar<\/code>\u4e2d\u7684<code>MyClass<\/code>\u7c7b\u5177\u6709\u4e0d\u540c\u7684\u5b9e\u73b0\uff0c\u90a3\u4e48\u5728\u8fd0\u884c\u65f6\u5c06\u65e0\u6cd5\u786e\u5b9a\u4f7f\u7528\u54ea\u4e2a\u5b9e\u73b0\u3002\u8fd9\u53ef\u80fd\u4f1a\u5bfc\u81f4\u610f\u5916\u7684\u884c\u4e3a\u6216\u9519\u8bef\u3002<\/p>\n\n\n\n<p>\u4ee5\u4e0a\u5c31\u662f\u6d45\u8c08\u4e24\u4e2ajar\u5305\u4e2d\u5305\u542b\u5b8c\u5168\u76f8\u540c\u7684\u5305\u540d\u548c\u7c7b\u540d\u7684\u52a0\u8f7d\u95ee\u9898\u7684\u5b8c\u6574\u653b\u7565\u3002\u5728\u5b9e\u9645\u5f00\u53d1\uff0c\u6211\u4eec\u9700\u8981\u6ce8\u610f\u907f\u514d\u4e2a\u95ee\u9898\uff0c\u5e76\u6839\u636e\u5b9e\u9645\u60c5\u51b5\u9009\u62e9\u5408\u9002\u7684\u89e3\u51b3\u65b9\u6848\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u524d\u8a00 \u6700\u8fd1\u5de5\u4f5c\u4e2d\u9047\u5230\u4e86\u4e00\u4e2a\u9879\u76ee\u5de5\u7a0b\u95ee\u9898\uff0c\u5728\u542f\u52a8jvm\u7684classpath\u6709\u4e24\u4e2a\u4e0d\u540c\u7248\u672c\u7684jwt\u7684jar\u5305\uff0c\u5728\u8c03 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26],"tags":[],"_links":{"self":[{"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts\/12840"}],"collection":[{"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=12840"}],"version-history":[{"count":1,"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts\/12840\/revisions"}],"predecessor-version":[{"id":12842,"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts\/12840\/revisions\/12842"}],"wp:attachment":[{"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=12840"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=12840"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=12840"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}