{"id":36848,"date":"2023-02-10T23:56:08","date_gmt":"2023-07-04T15:43:04","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8apache-camel%e7%9a%84file%e7%bb%84%e4%bb%b6\/"},"modified":"2024-04-29T14:04:44","modified_gmt":"2024-04-29T06:04:44","slug":"%e4%bd%bf%e7%94%a8apache-camel%e7%9a%84file%e7%bb%84%e4%bb%b6","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8apache-camel%e7%9a%84file%e7%bb%84%e4%bb%b6\/","title":{"rendered":"\u4f7f\u7528Apache Camel\u7684File\u7ec4\u4ef6"},"content":{"rendered":"

File\u7ec4\u4ef6\u662f\u4ec0\u4e48\uff1f<\/h1>\n

\u6587\u4ef6\u7ec4\u4ef6\u662f\u7528\u4e8e\u8bbf\u95ee\u6587\u4ef6\u7cfb\u7edf\u7684\u7ec4\u4ef6\uff0c\u53ef\u4ee5\u5b9e\u73b0\u5bf9\u6587\u4ef6\u548c\u76ee\u5f55\u7684\u8f93\u5165\u8f93\u51fa\u3002<\/p>\n

\u6d88\u8d39\u8005\/\u751f\u4ea7\u8005 zh\u011b\/ zh\u011b)<\/h2>\n

File\u7ec4\u4ef6\u53ef\u4ee5\u540c\u65f6\u626e\u6f14\u6d88\u8d39\u8005\u548c\u751f\u4ea7\u8005\u7684\u89d2\u8272\u3002\u4f5c\u4e3a\u6d88\u8d39\u8005\uff0c\u5b83\u53ef\u4ee5\u8bfb\u53d6\u6587\u4ef6\u76ee\u5f55\uff0c\u79fb\u52a8\u6216\u5220\u9664\u5df2\u8bfb\u53d6\u7684\u6587\u4ef6\u3002\u4f5c\u4e3a\u751f\u4ea7\u8005\uff0c\u5b83\u53ef\u4ee5\u5199\u5165\u6587\u4ef6\u7b49\u64cd\u4f5c\u3002<\/p>\n

\u5728\u6d88\u8d39\u8005\/\u751f\u4ea7\u8005\u6a21\u5f0f\u4e2d\uff0c\u53ef\u4ee5\u5b9e\u73b0\u4ee5\u4e0b\u793a\u4f8b\u3002<\/p>\n

\u6d88\u8d39\u8005
\n– \u8bfb\u53d6\u6307\u5b9a\u76ee\u5f55\u4e2d\u7684\u6587\u4ef6
\n– \u8bfb\u53d6\u6307\u5b9a\u6587\u4ef6\u8def\u5f84\u7684\u6587\u4ef6
\n– \u5220\u9664\u6307\u5b9a\u6587\u4ef6\u8def\u5f84\u7684\u6587\u4ef6
\n– \u8bfb\u53d6\u6ee1\u8db3\u6761\u4ef6\u7684\u6587\u4ef6<\/p>\n

\u5236\u4f5c\u516c\u53f8
\n– \u5728\u6307\u5b9a\u8def\u5f84\u4e0b\u521b\u5efa\u6587\u4ef6
\n– \u5728\u6307\u5b9a\u8def\u5f84\u4e0b\u521b\u5efa\u6587\u4ef6\uff0c\u5e76\u5728\u521b\u5efa\u5b8c\u6210\u540e\u751f\u6210\u4e00\u4e2a[\u6587\u4ef6\u540d].done\u7684\u6587\u4ef6\u3002<\/p>\n

\u7ec4\u4ef6\u7684URI<\/h2>\n

\u4f7f\u7528File\u7ec4\u4ef6\u7684URI\u5982\u4e0b\u6240\u793a\u3002<\/p>\n

file:directoryName\r\n<\/code><\/pre>\n
\u5728\u6307\u5b9a\u7684\u76ee\u5f55\u4e2d\uff08directoryName\uff09\uff0c\u8bbe\u7f6e\u5904\u7406\u76ee\u6807\u76ee\u5f55\u3002
\nFile\u7ec4\u4ef6\u5c06\u8bbf\u95ee\u6307\u5b9a\u7684directoryName\u4e2d\u5b58\u5728\u7684\u6587\u4ef6\u5e76\u8fdb\u884c\u5904\u7406\u3002
\n\u901a\u8fc7\u5728\u8be5\u4e0a\u4e0b\u6587\u8def\u5f84\u4e2d\u6307\u5b9a\u9009\u9879\uff0c\u53ef\u4ee5\u6267\u884c\u5404\u79cd\u5904\u7406\u3002
\nFile\u7ec4\u4ef6\u6709\u5f88\u591a\u9009\u9879\uff0c\u6bcf\u4e2a\u9009\u9879\u7684\u8bf4\u660e\u90fd\u5728\u4ee5\u4e0b\u5b98\u65b9\u7f51\u7ad9\u4e2d\u63d0\u4f9b\u3002<\/p>\n
\u6211\u5728\u8fd9\u7bc7\u6587\u7ae0\u4e2d\u60f3\u8981\u5c55\u793a\u4e00\u4e9b\u5b9e\u65bd\u4f8b\u5e76\u89e3\u91ca\u4e00\u4e9b\u9009\u9879\u3002<\/p>\n
\u5b9e\u65bd\u6848\u4f8b<\/h2>\n
\u672c\u8282\u5c06\u901a\u8fc7\u4f7f\u7528Java DSL\u4e2d\u7684\u8def\u7531\u63cf\u8ff0\u6765\u7ed9\u51faFile\u7ec4\u4ef6\u7684\u5b9e\u4f8b\u5b9e\u73b0\u3002\u6211\u4eec\u4ec5\u9650\u5236\u5728\u7ecf\u5e38\u4f7f\u7528\u7684\u9009\u9879\u4e0a\uff0c\u5e76\u4e14\u5bf9\u6240\u5217\u51fa\u7684\u9009\u9879\u4e5f\u53ea\u8fdb\u884c\u4e86\u6982\u8ff0\uff0c\u8bf7\u53c2\u8003\u524d\u8ff0\u5b98\u65b9\u7f51\u7ad9\u4e0a\u7684File\u7ec4\u4ef6\u8bf4\u660e\u4ee5\u83b7\u53d6\u8be6\u7ec6\u4fe1\u606f\u3002<\/p>\n
\u5c06\u6307\u5b9a\u76ee\u5f55\u4e2d\u7684\u6587\u4ef6\u590d\u5236<\/h3>\n
\u8fd9\u662f\u4e00\u4e2a\u7528\u4e8e\u590d\u5236\u6307\u5b9a\u76ee\u5f55\u6587\u4ef6\u7684\u6839\u76ee\u5f55\u3002
\n\u5c06data\/input\u76ee\u5f55\u4e2d\u7684\u6240\u6709\u6587\u4ef6\u590d\u5236\u5230data\/output\u76ee\u5f55\u3002
\n\u901a\u8fc7\u6307\u5b9anoop=true\u9009\u9879\uff0c\u53ef\u4ee5\u4f7f\u5176\u53ea\u8bfb\uff0c\u4e0d\u4f1a\u79fb\u52a8\u6216\u5220\u9664data\/input\u76ee\u5f55\u4e2d\u7684\u6587\u4ef6\u3002
\n\u540c\u65f6\uff0c\u901a\u8fc7\u6307\u5b9anoop=true\u9009\u9879\uff0c\u4e5f\u4f1a\u81ea\u52a8\u542f\u7528idempotent=true\u9009\u9879\uff0c\u4ee5\u786e\u4fdd\u76f8\u540c\u7684\u6587\u4ef6\u4e0d\u4f1a\u88ab\u5904\u7406\u3002<\/p>\n
from<\/span>(<\/span>\"file:data\/input?noop=true\"<\/span>).<\/span>to<\/span>(<\/span>\"file:data\/output\"<\/span>);<\/span>\r\n<\/code><\/pre>\n
\u5c06\u6307\u5b9a\u76ee\u5f55\u4e2d\u7684\u6587\u4ef6\u79fb\u52a8<\/h3>\n
\u8fd9\u662f\u6307\u5b9a\u76ee\u5f55\u4e0b\u6587\u4ef6\u7684\u79fb\u52a8\u8def\u5f84\u3002
\n\u5c06data\/input\u76ee\u5f55\u4e2d\u7684\u6240\u6709\u6587\u4ef6\u79fb\u52a8\u5230data\/output\u3002
\n\u901a\u8fc7delete=true\uff0c\u5728\u5904\u7406\u540e\u5220\u9664\u6587\u4ef6\u3002<\/p>\n
from(\"file:data\/input?delete=true\").to(\"file:data\/output\");\r\n<\/code><\/pre>\n
\u5c06\u6307\u5b9a\u76ee\u5f55\u4e2d\u7684\u6587\u4ef6\u8fdb\u884c\u9012\u5f52\u79fb\u52a8\u3002<\/h3>\n
\u8fd9\u662f\u4e00\u4e2a\u7528\u4e8e\u79fb\u52a8\u6307\u5b9a\u76ee\u5f55\u4e0b\u7684\u6587\u4ef6\u7684\u6839\u76ee\u5f55\uff0c\u5305\u62ec\u5b50\u76ee\u5f55\u4e2d\u5b58\u5728\u7684\u6587\u4ef6\u3002\u5b50\u76ee\u5f55\u672c\u8eab\u4e0d\u4f1a\u88ab\u79fb\u52a8\u3002
\n\u901a\u8fc7\u8bbe\u7f6erecursive=true\u6765\u6307\u5b9a\u8fdb\u884c\u9012\u5f52\u5904\u7406\u3002<\/p>\n
from<\/span>(<\/span>\"file:data\/input?delete=true&recursive=true\"<\/span>).<\/span>to<\/span>(<\/span>\"file:data\/output\"<\/span>);<\/span>\r\n<\/code><\/pre>\n
\u5728\u5904\u7406\u5b8c\u6210\u4e4b\u540e\u521b\u5efa\u4e00\u4e2a\u540d\u4e3a “done” \u7684\u6587\u4ef6\u3002<\/h3>\n
\u590d\u5236\u6307\u5b9a\u76ee\u5f55\u4e2d\u7684\u6587\u4ef6\uff0c\u5e76\u5728\u5904\u7406\u5b8c\u6210\u540e\u521b\u5efa\u4e00\u4e2a\u540d\u4e3a[\u6587\u4ef6\u540d].done\u7684\u6587\u4ef6\u4f5c\u4e3a\u6839\u76ee\u5f55\u3002
\n\u5f53\u5c06\u6240\u6709\u6587\u4ef6\u6210\u529f\u590d\u5236\u5230\/data\/output\u76ee\u5f55\u540e\uff0c\u5c06\u5728\u76ee\u6807\u76ee\u5f55\u4e2d\u751f\u6210\u4e00\u4e2a\u540d\u4e3a[\u6587\u4ef6\u540d].done\u7684\u6587\u4ef6\u3002
\n${file:name}\u8868\u793a\u6b63\u5728\u5904\u7406\u7684\u6587\u4ef6\u540d\u3002<\/p>\n
from<\/span>(<\/span>\"file:data\/input?noop=true\"<\/span>).<\/span>to<\/span>(<\/span>\"file:data\/output?doneFileName=${file:name}.done\"<\/span>);<\/span>\r\n<\/code><\/pre>\n
\u5982\u679c\u5b58\u5728\u540d\u4e3a[\u6587\u4ef6\u540d].done\u7684\u6587\u4ef6\uff0c\u5219\u5c06\u6587\u4ef6\u79fb\u52a8\u3002<\/h3>\n
\u5982\u679c\u5b58\u5728\u4e00\u4e2a\u540d\u4e3a [\u6587\u4ef6\u540d].done \u7684\u6587\u4ef6\uff0c\u6211\u4eec\u5c06\u628a\u6587\u4ef6\u79fb\u52a8\u8d70\uff0c\u4e0e\u5148\u524d\u7684\u60c5\u51b5\u76f8\u53cd\u3002<\/p>\n
from<\/span>(<\/span>\"file:data\/output?noop=true&doneFileName=${file:name}.done\"<\/span>).<\/span>to<\/span>(<\/span>\"file:data\/output.done\"<\/span>);<\/span>\r\n<\/code><\/pre>\n
\u83b7\u53d6\u6587\u4ef6\u540d\u5217\u8868\u548c\u6587\u672c\u6587\u4ef6\u7684\u5185\u5bb9\u3002<\/h3>\n
\u8bfb\u53d6data\/input\u6587\u4ef6\u5939\u4e2d\u7684\u6587\u4ef6\uff0c\u5e76\u83b7\u53d6\u6587\u4ef6\u540d\u5217\u8868\u548c\u6587\u672c\u6587\u4ef6\u7684\u5185\u5bb9\u8fdb\u884c\u8f93\u51fa\u3002\u5728process\u65b9\u6cd5\u4e2d\u6307\u5b9a\u4e86FileListProcessor\u5904\u7406\u5668\u3002<\/p>\n
from<\/span>(<\/span>\"file:data\/input?noop=true\"<\/span>).<\/span>process<\/span>(<\/span>new<\/span> FileListProcessor<\/span>());<\/span>\r\n<\/code><\/pre>\n
FileListProcessor\u5904\u7406\u5668\u7684\u5185\u5bb9\u5982\u4e0b\u6240\u793a\u3002<\/p>\n
package<\/span> example.camelbegginer.file<\/span>;<\/span>\r\n\r\nimport<\/span> java.util.Map<\/span>;<\/span>\r\n\r\nimport<\/span> org.apache.camel.Exchange<\/span>;<\/span>\r\nimport<\/span> org.apache.camel.Processor<\/span>;<\/span>\r\n\r\npublic<\/span> class<\/span> FileListProcessor<\/span> implements<\/span> Processor<\/span> {<\/span>\r\n\r\n    @Override<\/span>\r\n    public<\/span> void<\/span> process<\/span>(<\/span>Exchange<\/span> exchange<\/span>)<\/span> throws<\/span> Exception<\/span> {<\/span>\r\n        String<\/span> body<\/span> =<\/span> exchange<\/span>.<\/span>getIn<\/span>().<\/span>getBody<\/span>(<\/span>String<\/span>.<\/span>class<\/span>);<\/span>\r\n        System<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>\"body: \"<\/span> +<\/span> body<\/span>);<\/span>\r\n\r\n        Map<\/span><<\/span>String<\/span>,<\/span> Object<\/span>><\/span> headers<\/span> =<\/span> exchange<\/span>.<\/span>getIn<\/span>().<\/span>getHeaders<\/span>();<\/span>\r\n        System<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>\"fileName: \"<\/span> +<\/span> headers<\/span>.<\/span>get<\/span>(<\/span>\"CamelFileAbsolutePath\"<\/span>));<\/span>\r\n\r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u5728process\u65b9\u6cd5\u4e2d\uff0c\u901a\u8fc7\u4ee5\u4e0b\u4ee3\u7801\u5c06\u6587\u4ef6\u7684\u5185\u5bb9\u8f93\u51fa\u5230\u6807\u51c6\u8f93\u51fa\u3002<\/p>\n
        String<\/span> body<\/span> =<\/span> exchange<\/span>.<\/span>getIn<\/span>().<\/span>getBody<\/span>(<\/span>String<\/span>.<\/span>class<\/span>);<\/span>\r\n        System<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>\"body: \"<\/span> +<\/span> body<\/span>);<\/span>\r\n<\/code><\/pre>\n
\u6587\u4ef6\u540d\u7b49\u6587\u4ef6\u4fe1\u606f\u5c06\u5305\u542b\u5728\u6d88\u606f\u5934\u90e8\u3002
\n\u4e0b\u9762\u662f\u83b7\u53d6\u6d88\u606f\u5934\u90e8\u5e76\u901a\u8fc7”CamelFileAbsolutePath”\u83b7\u53d6\u6587\u4ef6\u8def\u5f84\uff0c\u5e76\u5c06\u5176\u8f93\u51fa\u5230\u6807\u51c6\u8f93\u51fa\u3002<\/p>\n
        Map<\/span><<\/span>String<\/span>,<\/span> Object<\/span>><\/span> headers<\/span> =<\/span> exchange<\/span>.<\/span>getIn<\/span>().<\/span>getHeaders<\/span>();<\/span>\r\n        System<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>\"fileName: \"<\/span> +<\/span> headers<\/span>.<\/span>get<\/span>(<\/span>\"CamelFileAbsolutePath\"<\/span>));<\/span>\r\n<\/code><\/pre>\n
\u8bf7\u53c2\u8003\u4ee5\u4e0b\u9875\u9762\u4ee5\u4e86\u89e3\u5728\u6d88\u606f\u5934\u4e2d\u8981\u8f93\u5165\u7684\u503c\uff1a
\nhttps:\/\/github.com\/apache\/camel\/blob\/master\/components\/camel-file\/src\/main\/docs\/file-component.adoc#message-headers<\/p>\n
\u9664\u4e86\u6587\u4ef6\u8def\u5f84\uff0c\u4f60\u8fd8\u53ef\u4ee5\u83b7\u53d6\u6587\u4ef6\u5927\u5c0f\u3001\u6700\u540e\u66f4\u65b0\u65e5\u671f\u7b49\u4fe1\u606f\u3002<\/p>\n
\u53ea\u5904\u7406\u5305\u542b\u6307\u5b9a\u5b57\u7b26\u4e32\u7684\u6587\u4ef6\u540d\u7684\u6587\u4ef6\u3002<\/h3>\n
\u53ea\u5904\u7406\u6587\u4ef6\u540d\u5305\u542b\u6307\u5b9a\u5b57\u7b26\u4e32\u7684\u6587\u4ef6\u7684\u8def\u5f84\u3002
\n\u4f7f\u7528filterFile\u9009\u9879\u6765\u63cf\u8ff0\u5982\u4e0b\u3002<\/p>\n
from<\/span>(<\/span>\"file:data\/input?noop=true&filterFile=$simple{file:name} contains 'file1'\"<\/span>)<\/span>\r\n                        .<\/span>to<\/span>(<\/span>\"file:data\/output\"<\/span>);<\/span>\r\n<\/code><\/pre>\n
\u7b5b\u9009\u6587\u4ef6= $simple{file:name} \u5305\u542b ‘file1’<\/p><\/blockquote>\n
\u4e0a\u9762\u7684filterFile\u9009\u9879\u7684\u503c\u8868\u793a\u5305\u542b\u6587\u4ef6\u540d\u4e2d\u7684”file1″\u5b57\u7b26\u4e32\u7684\u60c5\u51b5\u3002
\n\u53ef\u4ee5\u4f7f\u7528”Simple Expression Language”\uff08\u7b80\u5355\u8868\u8fbe\u5f0f\u8bed\u8a00\uff09\u548cFile Language\u6765\u6307\u5b9afilterFile\u9009\u9879\u7684\u503c\u3002<\/p>\n
Simple\u5f0f\u8a00\u8bed\u662fApache Camel\u7684\u4e13\u6709\u8868\u8fbe\u5f0f\u8bed\u8a00\uff0c\u7528\u4e8e\u8ba1\u7b97\u548c\u8f93\u51fa\u53d8\u91cf\u7684\u7ed3\u679c\uff0c\u5e76\u4ee5$simple{\u53d8\u91cf}\u7684\u65b9\u5f0f\u8fdb\u884c\u7f16\u5199\u3002
\n\u4f7f\u7528Simple\u8868\u8fbe\u5f0f\u8bed\u8a00\uff0c\u53ef\u4ee5\u5b9e\u73b0\u5927\u591a\u6570\u8ba1\u7b97\u548c\u53d8\u91cf\u7684\u53c2\u8003\u3002
\n\u6b64\u5916\uff0cFile Language\u662fSimple\u5f0f\u8bed\u8a00\u7684\u6269\u5c55\uff0c\u53ef\u4ee5\u5f15\u7528\u4e0e\u6587\u4ef6\u76f8\u5173\u7684\u503c\u3002<\/p>\n
\u5728\u524d\u9762\u7684\u4f8b\u5b50\u4e2d\uff0c\u201cfile:name\u201d\u8868\u793a\u5bf9\u6587\u4ef6\u540d\u7684\u53c2\u8003\u7684File Language\uff0c\u800c\u6574\u4e2a\u201c$simple{file:name} contains ‘file1’\u201d\u5219\u662f\u5728Simple\u5f0f\u8bed\u8a00\u4e2d\u8868\u793a\u5982\u679c\u6587\u4ef6\u540d\u4e2d\u5305\u542b\u5b57\u7b26\u4e32\u201cfile1\u201d\u7684\u60c5\u51b5\u3002<\/p>\n
\u8bf7\u53c2\u8003\u4ee5\u4e0b\u5b98\u65b9\u7f51\u7ad9\u4e86\u89e3Simple\u8bed\u8a00\u548cFile Language\u7684\u8be6\u7ec6\u4fe1\u606f\u3002<\/p>\n
    \n
  • \n
      Simple Expression Language<\/ul>\n<\/li>\n<\/ul>\n
       <\/p>\n
        File Language\uff08Apache Camel\u516c\u5f0f\uff09<\/ul>\n
        \u5c06\u6307\u5b9a\u7684\u6587\u4ef6\u538b\u7f29\u6210zip\u683c\u5f0f\u3002<\/h3>\n
        \u4e3a\u4e86\u8ba9\u60a8\u7406\u89e3Apache Camel\u7684\u4fbf\u5229\u4e4b\u5904\uff0c\u5c3d\u7ba1\u5b83\u4e0eFile\u7ec4\u4ef6\u6709\u4e9b\u4e0d\u76f8\u5173\uff0c\u6211\u5c06\u89e3\u91ca\u5982\u4f55\u4f7f\u7528zip\u7ec4\u4ef6\u8fdb\u884c\u6587\u4ef6\u538b\u7f29\u3002<\/p>\n
        \u5982\u679c\u8981\u5c06file1.txt\u6587\u4ef6\u8fdb\u884c\u538b\u7f29\uff0c\u53ea\u9700\u4f7f\u7528\u4ee5\u4e0b\u8def\u7531\u5373\u53ef\u8f7b\u677e\u5b9e\u73b0\u3002<\/p>\n
                            from<\/span>(<\/span>\"file:data\/input?noop=true&fileName=file1.txt\"<\/span>)<\/span>\r\n                        .<\/span>marshal<\/span>().<\/span>zipFile<\/span>()<\/span>\r\n                        .<\/span>to<\/span>(<\/span>\"file:data\/output\"<\/span>);<\/span>\r\n<\/code><\/pre>\n
        \u63d0\u793a\u7684\u300czipFile()\u300d\u51fd\u6570\u9700\u8981\u6dfb\u52a0\u4ee5\u4e0b\u4f9d\u8d56\u5173\u7cfb\u624d\u80fd\u4f7f\u7528\u3002<\/p>\n
                <dependency><\/span>\r\n            <groupId><\/span>org.apache.camel<\/groupId><\/span>\r\n            <artifactId><\/span>camel-zipfile<\/artifactId><\/span>\r\n            <version><\/span>${camel.version}<\/version><\/span>\r\n        <\/dependency><\/span>\r\n<\/code><\/pre>\n
        \u53ea\u9700\u8981\u4e00\u79cd\u9009\u62e9: \u53c2\u8003\u8d44\u6599<\/h2>\n
          \n
        • \n
            File Component\uff08Apache Camel\u516c\u5f0f\uff09<\/ul>\n<\/li>\n<\/ul>\n
            Simple Expression Language\uff08Simple\u5f0f\u8a00\u8a9e\uff09
            \nSimple\u5f0f\u8a00\u8a9e\u306eCamel\u516c\u5f0f\u306e\u30de\u30cb\u30e5\u30a2\u30eb\u3067\u3059\u3002<\/p>\n
            File Language\uff08Apache Camel\u516c\u5f0f\uff09
            \nFile Language\u306eCamel\u516c\u5f0f\u306e\u30de\u30cb\u30e5\u30a2\u30eb\u3067\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
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