{"id":628,"date":"2022-05-17T12:36:22","date_gmt":"2022-05-17T04:36:22","guid":{"rendered":"https:\/\/explause.com\/?p=628"},"modified":"2022-05-17T12:36:22","modified_gmt":"2022-05-17T04:36:22","slug":"spring-resource","status":"publish","type":"post","link":"https:\/\/devdoge.org\/?p=628","title":{"rendered":"Spring Resource"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Java\u6807\u51c6\u7684java.net.URL\u5e76\u4e0d\u8db3\u4ee5\u5904\u7406\u5e95\u5c42\u8d44\u6e90\uff0c\u6bd4\u5982\u8bf4\u6ca1\u6709\u4ececlasspath\u6216\u8005\u76f8\u5bf9\u4e8e\u5b83\u7684\u4f4d\u7f6e\u8f7d\u5165\u8d44\u6e90\u7ed9ServletContext\u3002<br>\u5c3d\u7ba1\u53ef\u4ee5\u7ed9\u7279\u5b9a\u7684\u524d\u7f00\uff08\u6bd4\u5982http:\uff09\u6ce8\u518c\u5904\u7406\u5668\uff08handler\uff09\uff0c\u4f46\u662f\u8fd9\u6837\u4f1a\u5f88\u590d\u6742\uff0c\u800c\u4e14URL\u63a5\u53e3\u7f3a\u5c11\u503c\u5f97\u671f\u5f85\u7684\u529f\u80fd\uff0c\u6bd4\u5982\u68c0\u67e5\u88ab\u6307\u5411\u7684\u8d44\u6e90\u662f\u5426\u5b58\u5728\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Spring Resource\u540c\u6837\u4e5f\u5728Spring Boot\u4e2d\u5e7f\u6cdb\u4f7f\u7528\u3002<\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\"><strong>Resource\u63a5\u53e3<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728org.springframework.core.io\u5305\u91cc\uff0c\u662f\u66f4\u9002\u5408\u7528\u4e8e<strong>\u62bd\u8c61\u5316<\/strong>\u5b58\u53d6\u5e95\u5c42\u8d44\u6e90\u7684\u63a5\u53e3\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5b9a\u4e49\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public interface Resource extends InputStreamSource {\n    boolean exists();\n    boolean isReadable();\n    boolean isOpen();\n    boolean isFile();\n    URL getURL() throws IOException;\n    URI getURI() throws IOException;\n    File getFile() throws IOException;\n    ReadableByteChannel readableChannel() throws IOException;\n    long contentLength() throws IOException;\n    long lastModified() throws IOException;\n    Resource createRelative(String relativePath) throws IOException;\n    String getFilename();\n    String getDescription();\n}<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">InputStreamSource\u63a5\u53e3\u7684\u5b9a\u4e49\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public interface InputStreamSource {\n    InputStream getInputStream() throws IOException;\n}<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Resource\u63a5\u53e3\u7684\u90e8\u5206\u91cd\u8981\u7684\u65b9\u6cd5\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>getInputStream()\uff1a\u5b9a\u4f4d\u5e76\u6253\u5f00\u8d44\u6e90\uff0c\u8fd4\u56de\u4e00\u4e2a<strong>InputStream<\/strong>\uff0c\u8c03\u7528\u8005\u5e94\u8bb0\u5f97<strong>close()<\/strong>\u8fd9\u4e2a\u6d41\u3002<\/li><li>exists()\uff1a\u8fd4\u56de\u4e00\u4e2aboolean\uff0c\u8868\u793a\u8d44\u6e90\u662f\u5426\u771f\u5b9e\u5b58\u5728\u3002<\/li><li>isOpen()\uff1a\u8fd4\u56de\u4e00\u4e2aboolean\uff0c\u8868\u793a\u8d44\u6e90\u662f\u5426\u8868\u793a\u4e00\u4e2a\u6253\u5f00\u7684\u6d41\u5982\u679c\u8fd4\u56detrue\uff0c\u5219InputStream\u4e0d\u53ef\u4ee5\u88ab\u591a\u6b21\u8bfb\u53d6\uff0c\u5fc5\u987b\u88ab\u8bfb\u53d6\u4e00\u6b21\uff0c\u8bfb\u53d6\u5b8c\u4e4b\u540e\u8981close\u9632\u6b62\u8d44\u6e90\u6cc4\u6f0f\u3002\u9664\u4e86InputStreamResource\u7684\u5b9e\u73b0\u4e4b\u5916\u8fd4\u56defalse\uff08\u56e0\u4e3a\u6ca1\u6709?2\uff09\u3002<\/li><li>getDescription()\uff1a\u8fd4\u56de\u5bf9\u4e8e\u8fd9\u4e2a\u8d44\u6e90\u7684\u63cf\u8ff0\uff0c\u7528\u4e8e\u663e\u793a\u9519\u8bef\u4fe1\u606f\uff0c\u901a\u5e38\u662f\u8d44\u6e90\u7684\u5168\u9650\u5b9a\u6587\u4ef6\u540d\u6216\u8005\u8d44\u6e90\u7684\u5b9e\u9645URL\u3002<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u6709\u7684<meta charset=\"utf-8\">Resource\u5b9e\u73b0\u540c\u65f6\u5b9e\u73b0\u4e86<code>WritableResource<\/code>\u63a5\u53e3\uff0c\u652f\u6301\u5199\u5165\u6570\u636e\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Spring\u5904\u5904\u4f7f\u7528<meta charset=\"utf-8\">Resource\u62bd\u8c61\u4f5c\u4e3a\u65b9\u6cd5\u53c2\u6570\uff0c\u6216\u8005\u662f\u63a5\u53d7\u4e00\u4e2aString\u53c2\u6570\u5e76\u8f6c\u6362\u6210\u9002\u5f53\u7684<meta charset=\"utf-8\">Resource\u5b9e\u73b0\uff08\u7b80\u5355\u65b9\u5f0f\uff09\uff0c\u4e5f\u6216\u8005\u901a\u8fc7\u7279\u6b8a\u7684\u524d\u7f00\u521b\u5efa\u7279\u5b9a\u7c7b\u578b\u7684Resource\u5b9e\u73b0\u3002<br>\u5c3d\u7ba1<meta charset=\"utf-8\">Resource\u63a5\u53e3\u5728Spring\u4e2d\u666e\u904d\u4f7f\u7528\uff0c\u4f46\u662f\u5b9e\u9645\u4e0a\u53ef\u4ee5\u5c06<meta charset=\"utf-8\">Resource\u4f5c\u4e3a\u4e00\u4e2a\u901a\u7528\u7684\u5de5\u5177\u7528\u4e8e\u81ea\u5df1\u7684\u4ee3\u7801\uff0c\u800c\u4e0d\u7528\u5728\u610fSpring\u7684\u5176\u4ed6\u90e8\u5206\u3002<br>\u5c3d\u7ba1\u4f1a\u548cSpring\u8026\u5408\uff0c\u4f46\u4e5f\u53ea\u662f\u8026\u5408\u8fd9\u4e2a\u5c0f\u5c0f\u7684\u5de5\u5177\u96c6\uff0c\u662fURL\u63a5\u53e3\u66f4\u597d\u7684\u66ff\u4ee3\u54c1\uff0c\u5c31\u548c\u4f7f\u7528\u522b\u7684\u5e93\u4e00\u6837\u3002<\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\"><strong>\u5185\u7f6eResource\u5b9e\u73b0<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><code><strong>UrlResource<\/strong><\/code>\uff1a\u5305\u88c5\u4e86\u4e00\u4e2ajava.net.URL\uff0c\u53ef\u7528\u4e8e\u5b58\u53d6\u4efb\u4f55\u7528url\u8bbf\u95ee\u7684\u8d44\u6e90\uff0c\u5982\u6587\u4ef6\u3001HTTPS\u3001FTP\u7b49\u3002<br>\u6240\u6709\u7684URL\u90fd\u6709\u4e00\u4e2a\u6807\u51c6\u5316\u7684String\u8868\u793a\uff0c\u6709\u5408\u9002\u7684\u524d\u7f00\u6765\u8868\u793aURL\u7c7b\u578b\uff0c\u5982\uff1afile:\u3001https:\u3001ftp:\u7b49\u3002<br>\u9664\u4e86\u901a\u8fc7\u6784\u9020\u5668\u521b\u5efa\u4e4b\u5916\uff0c\u63a5\u53d7\u7528String\u8868\u793a\u8def\u5f84\u7684\u65b9\u6cd5\u4e5f\u4f1a\u95f4\u63a5\u521b\u5efa\u4e00\u4e2a<meta charset=\"utf-8\"><code>UrlResource<\/code>\u5bf9\u8c61\u3002<br>\u901a\u5e38\u4e00\u4e2a\u8def\u5f84String\u91cc\u9762\u542b\u6709\u7279\u5b9a\u7684\u524d\u7f00\uff0c\u5c31\u4f1a\u81ea\u52a8\u521b\u5efa\u7279\u5b9a\u7684Resource\u5b9e\u73b0\u7c7b\u578b\u3002<br>\u5982\u679c\u4f7f\u7528\u4e86\u65e0\u6cd5\u8bc6\u522b\u7684\u8def\u5f84\u524d\u7f00\uff08prefix\uff0c\u5982classpath:\uff09\uff0c\u5c31\u4f1a\u81ea\u52a8\u521b\u5efa<meta charset=\"utf-8\"><code>UrlResource<\/code>\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><code><strong>ClassPathResource<\/strong><\/code>\uff1a\u8868\u793a\u4ececlasspath\u83b7\u53d6\u7684\u8d44\u6e90\uff0c\u4f7f\u7528\u5f53\u524d\u7ebf\u7a0b\u7684classloader\uff0c\u6216\u7ed9\u5b9a\u7684classloader\uff0c\u4e5f\u6216\u8005\u7ed9\u5b9a\u7684\u4e00\u4e2a\u7c7b\u7528\u4e8e\u52a0\u8f7d\u8d44\u6e90\u3002\u8fd9\u4e2a<meta charset=\"utf-8\">Resource\u5b9e\u73b0\u652f\u6301\u5c06\u6587\u4ef6\u7cfb\u7edf\u4e0b\u7684\u4f46\u662f<strong>\u4e0d\u5728jar\u6587\u4ef6\u6216\u8005\u88ab\uff08\u6bd4\u5982servlet\uff09\u5c55\u5f00\u5728\u6587\u4ef6\u7cfb\u7edf\u4e0b\u8d44\u6e90<\/strong>\u89e3\u6790\u6210<strong>java.io.File<\/strong>\u7c7b\u578b\u3002\u53ef\u4ee5\u901a\u8fc7\u6784\u9020\u5668\u521b\u5efa\uff0c\u4f46\u662f\u5728\u4f7f\u7528String\u4f5c\u4e3a\u8def\u5f84\u7684\u65b9\u6cd5\u7684\u53c2\u6570\u91cc\uff0c\u4f7f\u7528<strong>classpath:<\/strong>\u524d\u7f00\u4f1a\u9690\u5f0f\u5730\u521b\u5efa\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><code><strong>FileSystemResource<\/strong><\/code>\uff1a\u7528\u4e8e\u5904\u7406java.io.File\u7684\u5b9e\u73b0\uff0c\u540c\u6837\u652f\u6301java.nio.file.Path\u3002\u5b9e\u65bdSpring\u6807\u51c6\u5316\u7684\u5b57\u7b26\u4e32\u8def\u5f84\u8f6c\u6362\uff0c\u4f46\u662f\u6240\u6709\u7684\u64cd\u4f5c\u901a\u8fc7java.nio.file.Files\u5b9e\u73b0\u3002\u8981\u83b7\u5f97\u7eaf\u6b63\u7684java.nio.path.Path\u652f\u6301\u8bf7\u7528PathResource\u3002FileSystemResource\u652f\u6301\u89e3\u6790\u6210File<strong>\u548c<\/strong>URL\uff08\u540c\u65f6\u652f\u6301\uff09\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><code><strong>PathResource<\/strong><\/code>\uff1a\u5904\u7406java.nio.file.Path\u7684\u5b9e\u73b0\uff0c\u901a\u8fc7<strong>Path<\/strong> API\u5b8c\u6210\u6240\u6709\u64cd\u4f5c\u548c\u8f6c\u6362\u3002\u652f\u6301\u89e3\u6790\u6210<meta charset=\"utf-8\">File<strong>\u548c<\/strong>URL\uff08\u540c\u65f6\u652f\u6301\uff09\u3002\u540c\u65f6\u5b9e\u73b0\u4e86WritableResource\u63a5\u53e3\uff0c\u652f\u6301\u5199\u5165\u6570\u636e\u3002\u5b9e\u9645\u4e0a\u5c31\u662f\u57fa\u4e8ejava.nio.path.Path\u7684FileSystemResource\u7684\u66ff\u4ee3\uff0c\u4f46\u662f\u6709\u4e0d\u540c\u7684createRelative\u884c\u4e3a\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><code><strong>ServletContextResource<\/strong><\/code>\uff1a\u7528\u4e8eServletContext\u8d44\u6e90\u7684\u5b9e\u73b0\uff0c\u5c06\u8def\u5f84\u89e3\u91ca\u6210\u4eceweb\u5e94\u7528\u6839\u76ee\u5f55\u5f00\u59cb\u7684\u76f8\u5bf9\u8def\u5f84\u3002\u603b\u662f\u652f\u6301\u4ee5stream\u5b58\u53d6\u548cURL\u5b58\u53d6\uff0c\u4ec5\u5f53web\u5e94\u7528\u88ab\u5c55\u5f00\u5e76\u4e14\u8d44\u6e90\u7269\u7406\u5b58\u5728\u4e8e\u6587\u4ef6\u7cfb\u7edf\u91cc\u624d\u80fd\u4ee5java.io.File\u5f62\u5f0f\u5b58\u53d6\u3002\u4f46\u662f\uff0c\u5c55\u5f00\u8d44\u6e90\u4e0e\u5426\uff0c\u8fd8\u662f\u76f4\u63a5\u8bfb\u53d6jar\u6587\u4ef6\uff0c\u8fd8\u662f\u4ece\u6570\u636e\u5e93\u8bfb\u53d6\uff0c\u5176\u5b9e\u53d6\u51b3\u4e8eservlet\u5bb9\u5668\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><code><strong>InputStreamResource<\/strong><\/code>\uff1a\u7528\u4e8e\u5904\u7406InputStream\u7684\u5b9e\u73b0\u3002\u4ec5\u5728\u6ca1\u6709\u5408\u9002\u7684Resource\u5b9e\u73b0\u53ef\u7528\u65f6\u624d\u7528\u3002\u4f18\u5148\u4f7f\u7528ByteArrayResource\u6216\u8005\u522b\u7684\u57fa\u4e8e\u6587\u4ef6\u7684<meta charset=\"utf-8\">Resource\u5b9e\u73b0\u3002\u4e3a\u4e86\u548c\u522b\u7684\u5b9e\u73b0\u505a\u51fa\u533a\u5206\uff0c\u8fd9\u4e2a\u5b9e\u73b0\u662f\u4e00\u4e2a\u7528\u4e8e\u5df2\u7ecf\u6253\u5f00\u7684\u8d44\u6e90\u7684descriptor\uff0c\u6240\u4ee5\u8c03\u7528isOpen()\u4f1a\u8fd4\u56detrue\u3002\u9664\u975e\u8981\u8bfb\u53d6\u4e00\u4e2a\u6d41\u8bb8\u591a\u6b21\u6216\u8005\u5c06descriptor\u7528\u4e8e\u522b\u7684\u5730\u65b9\uff0c\u5426\u5219\u4e0d\u8981\u4f7f\u7528\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><code><strong>ByteArrayResource<\/strong><\/code>\uff1a\u7528\u4e8e\u5904\u7406\u7ed9\u5b9a<strong>\u5b57\u8282\u6570\u7ec4<\/strong>\u7684\u5b9e\u73b0\uff0c\u4e3a\u7ed9\u5b9a\u7684\u5b57\u8282\u6570\u7ec4\u521b\u5efaByteArrayInputStream\u3002<br>\u591a\u7528\u4e8e\u4ece\u522b\u7684\u5730\u65b9\u8bfb\u53d6\u4e00\u4e2a\u6570\u7ec4\u800c\u4e0d\u7528\u521b\u5efa\u4e00\u4e2a\u4e00\u6b21\u6027\u7684InputStreamResource\u3002<\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\"><strong> ResourceLoader\u63a5\u53e3<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u88ab\u8bbe\u8ba1\u6210\u53ef\u4ee5\u8fd4\u56de\uff08\u8f7d\u5165\uff09Resource\u5b9e\u4f8b\u7684\u63a5\u53e3\u3002\u5b9a\u4e49\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public interface ResourceLoader {\n    Resource getResource(String location);\n    ClassLoader getClassLoader();\n}<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u6240\u6709\u7684\u5bb9\u5668\u7c7b\u578b\uff08ApplicationContext\uff09\u90fd\u5b9e\u73b0\u4e86ResourceLoader\u63a5\u53e3\uff0c\u6240\u4ee5\u53ef\u7528\u4e8e\u83b7\u53d6<meta charset=\"utf-8\">Resource\u5b9e\u4f8b\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f53\u901a\u8fc7\u5bb9\u5668\u8c03\u7528getResource()\uff0c\u8def\u5f84\u8868\u793a\u7684\u8d44\u6e90\u6ca1\u6709\u7279\u6b8a\u524d\u7f00\u65f6\uff0c\u5bb9\u5668\u4f1a\u8fd4\u56de\u5bf9\u5e94\u4e8e\u5bb9\u5668\u7c7b\u578b\u7684Resource\u5b9e\u4f8b\u3002\u4f8b\u5982\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Resource template = ctx.getResource(\"some\/resource\/path\/myTemplate.txt\");<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5047\u8bbe<meta charset=\"utf-8\">ctx\u662f\u4e00\u4e2aClassPathXmlApplicationContext\u7c7b\u578b\u5b9e\u4f8b\uff0c\u90a3\u4e48\u8fd9\u4e2a\u8c03\u7528\u5c06\u8fd4\u56deClassPathResource\u7c7b\u578b\u7684<meta charset=\"utf-8\">Resource\u5b9e\u4f8b\u3002\u5982\u679cctx\u662fFileSystemXmlApplicationContext\u7c7b\u578b\uff0c\u5c31\u8fd4\u56deFileSystemResource\u3002\u5bf9\u4e8eWebApplicationContext\u7c7b\u578b\u5219\u662f\u8fd4\u56deServletContextResource\u7c7b\u578b\u7684\u5b9e\u4f8b\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u53ef\u4ee5\u901a\u8fc7\u6dfb\u52a0\u7279\u5b9a\u7684\u524d\u7f00\u6765\u5b9e\u73b0\u5f3a\u5236\u521b\u5efa\u60f3\u8981\u7684\u7c7b\u578b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Resource template = ctx.getResource(\"classpath:some\/resource\/path\/myTemplate.txt\");<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u6dfb\u52a0\u4e86<meta charset=\"utf-8\">classpath:\u524d\u7f00\u5c31\u4f1a\u521b\u5efaClassPathResource\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Resource template = ctx.getResource(\"file:\/\/\/some\/resource\/path\/myTemplate.txt\");<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u6dfb\u52a0\u4e86<meta charset=\"utf-8\">file:\u524d\u7f00\u5c31\u7528<meta charset=\"utf-8\"><code>FileSystemResource<\/code>\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Resource template = ctx.getResource(\"https:\/\/myhost.com\/resource\/path\/myTemplate.txt\");<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f7f\u7528<meta charset=\"utf-8\">https:\u524d\u7f00\u5c31\u521b\u5efaUrlResource\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">String\u524d\u7f00\u8f6c\u6362\u6210Resource\u5bf9\u8c61\u7684\u89c4\u5219\u603b\u7ed3\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table aligncenter is-style-stripes\"><table><tbody><tr><td><strong>Prefix<\/strong><\/td><td>\u4f8b\u5b50<\/td><td>\u89e3\u91ca<\/td><\/tr><tr><td>classpath:<\/td><td>classpath:com\/myapp\/config.xml<\/td><td>\u4ececlasspath\u8f7d\u5165\u8d44\u6e90<\/td><\/tr><tr><td>file:<\/td><td>file:\/\/\/data\/config.xml<\/td><td>\u4ee5URL\u7684\u5f62\u5f0f\u4ece\u6587\u4ef6\u7cfb\u7edf\u8f7d\u5165\u8d44\u6e90<\/td><\/tr><tr><td>https:<\/td><td>https:\/\/myserver\/logo.png<\/td><td>\u4f5c\u4e3aURL\u8f7d\u5165<\/td><\/tr><tr><td>(none)<\/td><td>\/data\/config.xml<\/td><td>\u53d6\u51b3\u4e8e\u5177\u4f53\u7684ApplicationContext\uff08\u5bb9\u5668\uff09\u5b9e\u73b0<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\"><strong>ResourcePatternResolver\u63a5\u53e3<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u662fResourceLoader\u7684\u62d3\u5c55\uff0c\u5b9a\u4e49\u4e86\u5c06\u8def\u5f84\u89e3\u6790\u6210Resource\u5bf9\u8c61\u7684\u7b56\u7565\u3002\u5b9a\u4e49\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public interface ResourcePatternResolver extends ResourceLoader {\n    String CLASSPATH_ALL_URL_PREFIX = \"classpath*:\";\n    Resource&#91;] getResources(String locationPattern) throws IOException;\n}<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd9\u4e2a\u63a5\u53e3\u5b9a\u4e49\u4e86\u4e00\u4e2a\u7279\u6b8a\u7684\u53eb<strong>classpath*:<\/strong>\u7684\u524d\u7f00\uff0c\u7528\u4e8e\u5339\u914dclasspath\u4e0b\u6240\u6709\u7684\u8d44\u6e90\u3002\u8d44\u6e90\u8def\u5f84\u4e0d\u80fd\u6709\u5360\u4f4d\u7b26\u3002jar\u6587\u4ef6\u6216\u8005classpath\u4e0b\u7684\u4e0d\u540c\u76ee\u5f55\u53ef\u80fd\u4f1a\u6709\u76f8\u540c\u540d\u79f0\u76f8\u540c\u8def\u5f84\u7684\u6587\u4ef6\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">PathMatchingResourcePatternResolver\u662f\u4e00\u4e2a\u5355\u72ec\u7684\u5b9e\u73b0\uff0c\u5728ApplicationContext\u4e4b\u5916\u4e5f\u80fd\u4f7f\u7528\uff0c\u4e5f\u88abResourceArrayPropertyEditor\u4f7f\u7528\uff0c\u7528\u4e8e\u83b7\u5f97Resource[]\u7c7b\u578b\u7684bean\u7684\u5c5e\u6027\u3002<br>PathMatchingResourcePatternResolver\u53ef\u4ee5\u5c06\u4e00\u4e2a\u7279\u5b9a\u7684\u8def\u5f84\u89e3\u6790\u6210\u4e00\u4e2a\u6216\u591a\u4e2a\u5339\u914d\u7684Resource\u5bf9\u8c61\u3002<br>\u6e90\u8def\u5f84\u53ef\u4ee5\u662f\u4e00\u5bf9\u4e00\u6620\u5c04\u5230\u76ee\u6807Resource\uff0c\u4e5f\u53ef\u80fd\u662f\u7c7b\u4f3cclasspath*:\u4e4b\u7c7b\u7684\u524d\u7f00\u6216ant\u98ce\u683c\u6b63\u5219\u8868\u8fbe\u5f0f\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6ce8\u610f\uff1a\u4efb\u4f55\u6807\u51c6ApplicationContext\u4e4b\u5185\u7684ResourceLoader\u5b9e\u9645\u4e0a\u90fd\u662f\u5b9e\u73b0\u4e86ResourcePatternResolver\u63a5\u53e3\u7684PathMatchingResourcePatternResolver\u5b9e\u4f8b\u3002\u5bb9\u5668\u81ea\u5df1\u5b9e\u9645\u4e0a\u4e5f\u5b9e\u73b0\u4e86ResourcePatternResolver\u63a5\u53e3\uff0c\u7136\u540e\u59d4\u6258\u7ed9\u9ed8\u8ba4\u7684PathMatchingResourcePatternResolver\u3002<\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\"><strong>ResourceLoaderAware\u63a5\u53e3<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u7279\u6b8a\u7684\u56de\u8c03\u63a5\u53e3\uff0c\u7528\u4e8e\u8bc6\u522b\u80fd\u63d0\u4f9bResourceLoader\u5f15\u7528\u7684\u7ec4\u4ef6\u3002\u5b9a\u4e49\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public interface ResourceLoaderAware {\n    void setResourceLoader(ResourceLoader resourceLoader);\n}<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f53\u4e00\u4e2a\u7c7b\u5b9e\u73b0\u4e86ResourceLoaderAware\u63a5\u53e3\u5e76\u4f5c\u4e3abean\u6ce8\u5165\u5230\u5bb9\u5668\uff0c\u5b83\u4f1a\u88ab\u5bb9\u5668\u8bc6\u522b\u6210ResourceLoaderAware\u3002\u7136\u540e\u5bb9\u5668\u8c03\u7528<meta charset=\"utf-8\">setResourceLoader(ResourceLoader)\u65b9\u6cd5\uff0c\u5c06\u5bb9\u5668\u81ea\u5df1\u4f5c\u4e3a\u53c2\u6570\u4f20\u8fdb\u53bb\uff0c\u56e0\u4e3a\u5bb9\u5668\uff08ApplicationContext\uff09\u4e5f\u5b9e\u73b0\u4e86ResourceLoader\u63a5\u53e3\u3002<br>\u7531\u4e8e\u5bb9\u5668\u81ea\u5df1\u4e5f\u662f\u4e00\u4e2aResourceLoader\uff0c\u6240\u4ee5bean\u5b9e\u73b0ApplicationContextAware\u63a5\u53e3\u4e5f\u80fd\u8fbe\u6210\u540c\u6837\u76ee\u7684\u3002\u4f46\u662f\u5982\u679c\u53ea\u662f\u60f3\u8f7d\u5165\u8d44\u6e90\uff0c\u4f7f\u7528ResourceLoader\u63a5\u53e3\u4f1a\u66f4\u597d\u3002\u8fd9\u6837\u4ee3\u7801\u53ea\u4f1a\u548c\u8d44\u6e90\u52a0\u8f7d\u63a5\u53e3\u8026\u5408\uff0c\u800c\u4e0d\u662f\u6574\u4e2aApplicationContext\u63a5\u53e3\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u5e94\u7528\u7ec4\u4ef6\u91cc\uff0c\u53ef\u4ee5\u901a\u8fc7@Autowired\u81ea\u52a8\u88c5\u914d\u4e00\u4e2aResourceLoader\u7c7b\u578b\u7684\u5bf9\u8c61\u4f5c\u4e3aResourceLoaderAware\u63a5\u53e3\u7684\u66ff\u4ee3\u3002\u4e3a\u4e86\u66f4\u6709\u5f39\u6027\uff08\u81ea\u52a8\u88c5\u914d\u5b57\u6bb5\u548c\u591a\u4e2a\u65b9\u6cd5\u53c2\u6570\uff09\uff0c\u8003\u8651\u4f7f\u7528\u57fa\u4e8e\u6ce8\u89e3\u7684\u81ea\u52a8\u88c5\u914d\u529f\u80fd\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>@Autowired\nResourceLoader resourceLoader;<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u6ce8\u610f\uff1a\u5982\u679c\u4ece\u4e00\u4e2a\u8def\u5f84\u4e0b\u542b\u6709\u4e00\u4e2a\u6216\u591a\u4e2aResource\u5bf9\u8c61\uff0c\u8003\u8651\u81ea\u52a8\u88c5\u914d\u4e2a<code>ResourcePatternResolver<\/code>\u5b9e\u4f8b\u800c\u4e0d\u662fResourceLoader\u3002<\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\"><strong>\u8d44\u6e90\u4f5c\u4e3a\u4f9d\u8d56<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u679cbean\u8981\u901a\u8fc7\u4e00\u7cfb\u5217\u52a8\u6001\u5904\u7406\u6765\u5224\u65ad\u6216\u8005\u63d0\u4f9b\u8d44\u6e90\u8def\u5f84\uff0c\u90a3\u4e48bean\u4f7f\u7528ResourceLoader\u6216\u8005ResourcePatternResolver\u63a5\u53e3\u6765\u88c5\u8f7d\u8d44\u6e90\u5c31\u5f88\u5408\u7406\u3002\u4f8b\u5982\u4e00\u4e2a\u6a21\u7248\uff0c\u5bf9\u7279\u5b9a\u7684\u7528\u6237\u8f7d\u5165\u7279\u5b9a\u7684\u8d44\u6e90\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u7531\u4e8e\u6240\u6709\u7684\u5bb9\u5668\u7c7b\u578b\u90fd\u6ce8\u518c\u5e76\u4f7f\u7528PropertyEditor\u7c7b\u578bbean\uff0c\u53ef\u4ee5\u5c06String\u8def\u5f84\u8f6c\u6362\u6210Resource\u5bf9\u8c61\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\u5982\uff0c\u6709\u4e00\u4e2a<meta charset=\"utf-8\">MyBean\u7c7b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public class MyBean {\n    private Resource template;\n    public setTemplate(Resource template) {\n        this.template = template;\n    }\n}<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728xml\u914d\u7f6e\u4e2d\uff0ctemplate\u5c5e\u6027\u53ef\u4ee5\u914d\u7f6e\u6210\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;bean id=\"myBean\" class=\"example.MyBean\"&gt;\n    &lt;property name=\"template\" value=\"some\/resource\/path\/myTemplate.txt\"\/&gt;\n&lt;\/bean&gt;<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u7531\u4e8e\u6ca1\u6709\u7279\u6b8a\u524d\u7f00\uff0c\u6240\u4ee5\u5177\u4f53\u7684\u7c7b\u578b\u53d6\u51b3\u4e8e\u5bb9\u5668\u7c7b\u578b\u3002\u5982\u679c\u9700\u8981\u5f3a\u5236\u8f6c\u6362\uff0c\u53ef\u4ee5\u6dfb\u52a0\u524d\u7f00\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;property name=\"template\" value=\"classpath:some\/resource\/path\/myTemplate.txt\"&gt;<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u7c7b\u578b\u662fClassPathResource\uff0c\u6216\u8005\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;property name=\"template\" value=\"file:\/\/\/some\/resource\/path\/myTemplate.txt\"\/&gt;<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u7c7b\u578b\u662fFileSystemResource\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u751a\u81f3\u53ef\u4ee5\u4f7f\u7528@Value\u6ce8\u89e3\u6ce8\u5165String\u8def\u5f84\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>@Component\npublic class MyBean {\n    private final Resource template;\n    public MyBean(@Value(\"${template.path}\") Resource template) {\n        this.template = template;\n    }\n}<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u6ce8\u5165\u7684String\u503c\u7531PropertyEditor\u8f6c\u6362\uff0c\u5b58\u5728\u4e8eSpring Environment\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u679c\u60f3\u8981\u88c5\u5728\u8def\u5f84\u4e0b\u7684\u591a\u4e2a\u8d44\u6e90\uff0c\u53ef\u4ee5\u5c06\u6ce8\u5165\u70b9\u5b9a\u4e49\u6210\u6570\u7ec4\u7c7b\u578b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>@Component\npublic class MyBean {\n    private final Resource&#91;] templates;\n    public MyBean(@Value(\"${templates.path}\") Resource&#91;] templates) {\n        this.templates = templates;\n    }\n}<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\u5982<meta charset=\"utf-8\">templates.path\u7684\u503c\u4e3aclasspath*:\/config\/templates\/*.txt\uff0c\u53ef\u4ee5\u8f7d\u5165\u76ee\u5f55\u4e0b\u6240\u6709\u7684txt\u6587\u4ef6\u8d44\u6e90\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Spring\u5982\u4f55\u5904\u7406\u8d44\u6e90\uff0c\u8d44\u6e90\u7684\u79cd\u7c7b\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[27],"tags":[29,18],"class_list":["post-628","post","type-post","status-publish","format-standard","hentry","category-ioc","tag-resource","tag-spring"],"blocksy_meta":{"styles_descriptor":{"styles":{"desktop":"","tablet":"","mobile":""},"google_fonts":[],"version":6}},"_links":{"self":[{"href":"https:\/\/devdoge.org\/index.php?rest_route=\/wp\/v2\/posts\/628","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/devdoge.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/devdoge.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/devdoge.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/devdoge.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=628"}],"version-history":[{"count":40,"href":"https:\/\/devdoge.org\/index.php?rest_route=\/wp\/v2\/posts\/628\/revisions"}],"predecessor-version":[{"id":692,"href":"https:\/\/devdoge.org\/index.php?rest_route=\/wp\/v2\/posts\/628\/revisions\/692"}],"wp:attachment":[{"href":"https:\/\/devdoge.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=628"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/devdoge.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=628"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/devdoge.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=628"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}