\u6700\u8fd1\u51e0\u5929\u4e00\u76f4\u5728\u5b9e\u73b0java\u7684\u70ed\u66f4\u65b0\u3002<\/p>\n
\u672c\u6765\u4ee5\u4e3a\u4f7f\u7528classloader\u5f88\u5bb9\u6613\u641e\u5b9a\uff0c\u7ed3\u679c\u8d70\u8fc7\u4e86\u597d\u51e0\u4e2a\u5751\u3002<\/p>\n
1\u3001classloader\u4e2d\u7684\u7c7b\u4e0d\u5141\u8bb8\u91cd\u590d\u52a0\u8f7d\u3002<\/p>\n
\u5982\u679c\u5df2\u7ecf\u52a0\u8f7d\u8fc7\u7684\u7c7b\uff0c\u9700\u8981\u5148\u5224\u65ad\u00a0findLoadedClass(name)\u4e2d\u662f\u5426\u5b58\u5728\uff0c\u5982\u679c\u5df2\u7ecf\u5b58\u5728\uff0c\u4e0d\u8981\u518d\u6b21\u52a0\u8f7d\u3002<\/p>\n
2\u3001classloader\u6700\u521d\u653e\u5728contextLister\u4e2d\uff0c\u670d\u52a1\u542f\u52a8\u65f6\uff0c\u81ea\u52a8\u542f\u52a8\uff0c\u7ed3\u679c\u53d1\u73b0\u5f02\u5e38\u65e0\u6cd5\u8865\u83b7\uff0c\u53ea\u597d\u5728action\u4e2d\u624b\u52a8\u52a0\u8f7d\u6765\u8fdb\u884c\u8c03\u8bd5\u3002<\/p>\n
3\u3001classloaderA\u548cclassloaderB\u52a0\u8f7d\u76f8\u540c\u7684\u7c7b\uff0c\u4e5f\u4f1a\u5224\u65ad\u4e3a\u4e0d\u76f8\u540c\uff0c\u56e0\u4e3a\u662f\u7531\u4e0d\u540c\u7684classloader\u52a0\u8f7d\u7684\u3002<\/p>\n
4\u3001\u770b\u8d77\u6765\u9700\u8981\u5728tomcat\u4e2d\u4f7f\u7528\u81ea\u5df1\u7684\u7c7b\u8fdb\u884c\u52a0\u8f7d\u624d\u53ef\u4ee5\u5b9e\u73b0\u70ed\u66f4\u65b0\u3002\u6d4b\u8bd5\u4e0b\u3002\u73b0\u5728\u9700\u8981\u5728tomcat\u8bbe\u7f6e\u81ea\u5df1\u7684classloader\uff0c\u540c\u65f6\u5728\u52a0\u8f7d\u65b0\u7c7b\u65f6\uff0c\u4e0d\u80fd\u518d\u91cd\u65b0new classloader.<\/p>\n
5\u3001\u5148\u6d4b\u8bd5\u4e0b\u5982\u4f55\u4ecejar\u4e2d\u52a0\u8f7d\u7c7b\u3002<\/p>\n
\u6655\u6b7b\uff0c\u56e0\u4e3a\u6211\u52a0\u4e00\u4e2a\u5224\u65ad\u5b57\u7b26\u4e32\u662f\u4f7f\u7528\u7684apache common\u4e2d\u7684stringutils\uff0c\u7ed3\u679c\u5bfc\u81f4classloader\u76f4\u63a5\u6b7b\u6389\uff0c\u8fd8\u4e0d\u629b\u51fa\u5f02\u5e38\u3002\u770b\u6765\uff0c\u5982\u679c\u662fcontext class loader\uff0c\u53ea\u4f7f\u7528java jdk\u4e2d\u7684\u7c7b\u5e93\u3002<\/p>\n
6\u3001\u540c\u4e00\u4e2a\u7c7b\u5728\u4e0d\u540c\u7684classloader\u4e2d\u52a0\u8f7d\uff0c\u4e5f\u65e0\u6cd5\u76f8\u4e92\u8d4b\u503c\u3002<\/p>\n
\u8fd9\u91cc\u6709\u4e24\u79cd\u89e3\u51b3\u65b9\u6848\uff1a<\/p>\n
1)\u5728tomcat\u4e2d\u4f7f\u7528custom class loader\u6765\u52a0\u8f7d\u6240\u9700\u8981\u7684\u6240\u6709\u7c7b\u3002<\/p>\n
2)\u9700\u8981\u52a0\u8f7d\u7684\u7c7b\u7684\u7236\u7c7b\u548c\u63a5\u53e3\u4ea4\u7ed9context class loader\u52a0\u8f7d\u3002\u8fd9\u6837\u5c31\u53ef\u4ee5\u5171\u540c\u76f8\u540cclassloader\u52a0\u8f7d\u7684\u63a5\u53e3\uff0c\u901a\u8fc7\u4e0d\u540c\u7684classloader\u6765\u52a0\u8f7d\u5177\u4f53\u7684\u5b9e\u73b0\u7c7b\u53ca\u5b50\u7c7b\u3002<\/p>\n
\u73b0\u5728\u7ec8\u4e8e\u4f7f\u7528\u7b2c\u4e8c\u79cd\u89e3\u51b3\u65b9\u6848\u89e3\u51b3\u95ee\u9898\u3002\u5bf9 classloader\u53ca\u7c7b\u52a0\u8f7d\u548c\u70ed\u66f4\u65b0\u4e86\u89e3\u7684\u66f4\u6df1\u5165\u4e86\u3002<\/p>\n
\u540c\u65f6\u9700\u8981\u6d4b\u8bd5\u4e0b\uff0c\u591a\u6b21defines\u7c7b\u662f\u5426\u80fd\u884c\u7684\u901a\u3002<\/p>\n
<\/p>\n
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<\/p>\n","protected":false},"excerpt":{"rendered":"
\u6700\u8fd1\u51e0\u5929\u4e00\u76f4\u5728\u5b9e\u73b0java\u7684\u70ed\u66f4\u65b0\u3002 \u672c\u6765\u4ee5\u4e3a\u4f7f\u7528classloader\u5f88\u5bb9\u6613\u641e …<\/p>\n