{"id":10007008,"date":"2022-12-24T02:40:16","date_gmt":"2022-12-23T18:40:16","guid":{"rendered":"https:\/\/ityet.com\/?p=10007008"},"modified":"2022-12-24T02:40:16","modified_gmt":"2022-12-23T18:40:16","slug":"%e3%80%90%e7%bf%bb%e8%af%91%e3%80%91%e5%9b%be%e5%83%8f%e5%88%b0base64%e5%ad%97%e7%ac%a6%e4%b8%b2%e8%bd%ac%e6%8d%a2","status":"publish","type":"post","link":"https:\/\/itmax.cn\/?p=10007008","title":{"rendered":"\u3010\u7ffb\u8bd1\u3011\u56fe\u50cf\u5230Base64\u5b57\u7b26\u4e32\u8f6c\u6362"},"content":{"rendered":"

1 \u6982\u89c8<\/h2>\n

\u5728\u8fd9\u4e2a\u7b80\u77ed\u7684\u6559\u7a0b\u4e2d\uff0c\u6211\u4eec\u5c06\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528 Apache Common IO \u5305\u548c Java 8 \u539f\u751f\u7c7b Base64 \u5c06\u56fe\u7247\u6587\u4ef6\u8f6c\u6210 base64 \u5b57\u7b26\u4e32\uff0c\u7136\u540e\u628a base64 \u5b57\u7b26\u4e32\u518d\u8f6c\u6210\u56fe\u7247\u3002<\/p>\n

\u8fd9\u4e2a\u64cd\u4f5c\u4e5f\u53ef\u4ee5\u5e94\u7528\u5230\u4efb\u4f55\u4e8c\u8fdb\u5236\u6587\u4ef6\u6216\u8005\u4e8c\u8fdb\u5236\u6570\u7ec4\u4e2d\u3002\u5f53\u6211\u4eec\u9700\u8981\u4ee5 json \u683c\u5f0f\u4f20\u8f93\u4e8c\u8fdb\u5236\u5185\u5bb9\u7684\u65f6\u5019\uff0c\u4f8b\u5982\u4ece\u79fb\u52a8app\u7a0b\u5e8f\u4f20\u5230\u5230 REST \u7aef\u65f6\uff0c\u5b83\u975e\u5e38\u6709\u7528\u3002<\/p>\n

2 Maven \u4f9d\u8d56<\/h2>\n

\u6dfb\u52a0\u4e00\u4e0b\u4f9d\u8d56\u5230 pom.xml \u4e2d\uff1a<\/p>\n

<dependency>\n    <groupId>commons-io<\/groupId>\n    <artifactId>commons-io<\/artifactId>\n    <version>2.11.0<\/version>\n<\/dependency><\/code><\/pre>\n
\u4f60\u53ef\u4ee5\u5728 maven \u4e2d\u592e\u4ed3\u5e93\u627e\u5230 commons-io \u5305\u7684\u6700\u65b0\u7248\u672c\u3002Maven Central.<\/a><\/p>\n
3 \u5c06\u56fe\u7247\u8f6c\u6210 base64 \u5b57\u7b26\u4e32<\/h2>\n
\u9996\u5148\uff0c\u6211\u4eec\u5c06\u6587\u4ef6\u5185\u5bb9\u8f6c\u6210 byte \u6570\u7ec4\uff0c\u7136\u540e\u4f7f\u7528 Java 8 \u7684 Base64 \u7c7b\u7f16\u7801\u8fd9\u4e2a\u6570\u7ec4\u3002<\/p>\n
byte[] fileContent = FileUtils.readFileToByteArray(new File(filePath));\nString encodedString = Base64.getEncoder().encodeToString(fileContent);<\/code><\/pre>\n
encodeToString \u5b57\u6bb5\u662f A-Za-z0-9+\/ \u96c6\u5408\u4e2d\u7684\u5b57\u7b26\u4e32\uff0c\u89e3\u7801\u5668\u62d2\u7edd\u8be5\u96c6\u5408\u4e4b\u5916\u7684\u4efb\u4f55\u5b57\u7b26\u3002<\/p>\n
4 \u5c06 base64 \u5b57\u7b26\u4e32\u8f6c\u6210\u56fe\u7247<\/h2>\n
\u73b0\u5728\u6211\u4eec\u6709\u4e00\u4e2a Base64 \u5b57\u7b26\u4e32\u4e86\uff0c\u8ba9\u6211\u4eec\u628a\u5b83\u7f16\u7801\u56de\u53bb\u6210\u4e8c\u8fdb\u5236\u6587\u4ef6\u5e76\u4e14\u5199\u5165\u6587\u4ef6\u3002<\/p>\n
byte[] decodedBytes = Base64.getDecoder().decode(encodedString);\nFileUtils.writeByteArrayToFile(new File(outputFileName), decodedBytes);<\/code><\/pre>\n
5 \u6d4b\u8bd5\u6211\u4eec\u7684\u4ee3\u7801<\/h2>\n
\u6700\u540e\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u8bfb\u53d6\u4e00\u4e2a\u6587\u4ef6\uff0c\u5c06\u5176\u7f16\u7801\u4e3a Base64 \u5b57\u7b26\u4e32\uff0c\u7136\u540e\u89e3\u7801\u56de\u4e00\u4e2a\u65b0\u6587\u4ef6\u6765\u9a8c\u8bc1\u4ee3\u7801\u662f\u5426\u6b63\u786e\u5de5\u4f5c:<\/p>\n
public class FileToBase64StringConversionUnitTest {\n\n    private String inputFilePath = "test_image.jpg";\n    private String outputFilePath = "test_image_copy.jpg";\n\n    @Test\n    public void fileToBase64StringConversion() throws IOException {\n        \/\/ load file from \/src\/test\/resources\n        ClassLoader classLoader = getClass().getClassLoader();\n        File inputFile = new File(classLoader\n          .getResource(inputFilePath)\n          .getFile());\n\n        byte[] fileContent = FileUtils.readFileToByteArray(inputFile);\n        String encodedString = Base64\n          .getEncoder()\n          .encodeToString(fileContent);\n\n        \/\/ create output file\n        File outputFile = new File(inputFile\n          .getParentFile()\n          .getAbsolutePath() + File.pathSeparator + outputFilePath);\n\n        \/\/ decode the string and write to file\n        byte[] decodedBytes = Base64\n          .getDecoder()\n          .decode(encodedString);\n        FileUtils.writeByteArrayToFile(outputFile, decodedBytes);\n\n        assertTrue(FileUtils.contentEquals(inputFile, outputFile));\n    }\n}<\/code><\/pre>\n
6 \u7ed3\u8bba<\/h2>\n
\u8fd9\u7bc7\u6587\u7ae0\u975e\u5e38\u5207\u9898\uff0c\u5b83\u4ecb\u7ecd\u4e86\u5c06\u4efb\u4f55\u6587\u4ef6\u7684\u5185\u5bb9\u7f16\u7801\u4e3a Base64 \u5b57\u7b26\u4e32\uff0c\u5e76\u5c06Base64 \u5b57\u7b26\u4e32\u89e3\u7801\u4e3a\u5b57\u8282\u6570\u7ec4\uff0c\u5e76\u4f7f\u7528 Apache Common IO \u548c Java 8 \u7279\u6027\u5c06\u5176\u4fdd\u5b58\u5230\u6587\u4ef6\u4e2d\u3002<\/p>\n
\u539f\u6587\u5730\u5740\uff1ahttps:\/\/www.baeldung.com\/java…<\/a><\/p>\n
https:\/\/segmentfault.com\/a\/1190000043146727<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
1 \u6982\u89c8 \u5728\u8fd9\u4e2a\u7b80\u77ed\u7684\u6559\u7a0b\u4e2d\uff0c\u6211\u4eec\u5c06\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528 Apache Common IO \u5305\u548c Java 8 \u539f\u751f\u7c7b […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[4],"tags":[],"class_list":["post-10007008","post","type-post","status-publish","format-standard","hentry","category-share"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10007008","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=10007008"}],"version-history":[{"count":0,"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10007008\/revisions"}],"wp:attachment":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=10007008"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=10007008"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=10007008"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}