{"id":203362,"date":"2025-05-22T13:39:20","date_gmt":"2025-05-22T05:39:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/203362\/"},"modified":"2025-05-22T13:39:20","modified_gmt":"2025-05-22T05:39:20","slug":"java-%e5%90%8e%e7%ab%af%e5%a6%82%e4%bd%95%e4%bb%8e-multipart-form-data-%e8%a1%a8%e5%8d%95%e8%8e%b7%e5%8f%96%e5%80%bc%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/203362\/","title":{"rendered":"Java \u540e\u7aef\u5982\u4f55\u4ece \\”multipart\/form-data\\” \u8868\u5355\u83b7\u53d6\u503c\uff1f"},"content":{"rendered":"

<\/b> <\/p>\n

Java \u540e\u7aef\u5982\u4f55\u4ece \\”multipart\/form-data\\” \u8868\u5355\u83b7\u53d6\u503c\uff1f<\/h1>\n

IT\u884c\u4e1a\u76f8\u5bf9\u4e8e\u4e00\u822c\u4f20\u7edf\u884c\u4e1a\uff0c\u53d1\u5c55\u66f4\u65b0\u901f\u5ea6\u66f4\u5feb\uff0c\u4e00\u65e6\u505c\u6b62\u4e86\u5b66\u4e60\uff0c\u5f88\u5feb\u5c31\u4f1a\u88ab\u884c\u4e1a\u6240\u6dd8\u6c70\u3002\u6240\u4ee5\u6211\u4eec\u9700\u8981\u8e0f\u8e0f\u5b9e\u5b9e\u7684\u4e0d\u65ad\u5b66\u4e60\uff0c\u7cbe\u8fdb\u81ea\u5df1\u7684\u6280\u672f\uff0c\u5c24\u5176\u662f\u521d\u5b66\u8005\u3002\u4eca\u5929\u7ed9\u5927\u5bb6\u6574\u7406\u4e86\u300aJava \u540e\u7aef\u5982\u4f55\u4ece \\”multipart\/form-data\\” \u8868\u5355\u83b7\u53d6\u503c\uff1f\u300b\uff0c\u804a\u804a\uff0c\u6211\u4eec\u4e00\u8d77\u6765\u770b\u770b\u5427\uff01<\/p>\n

<\/p>\n

\u5728 java \u540e\u7aef\u4e2d\uff0c\u4ece enctype \u7c7b\u578b\u4e3a “multipart\/form-data” \u7684\u8868\u5355\u4e2d\u83b7\u53d6\u503c\uff0c\u5177\u4f53\u6b65\u9aa4\u5982\u4e0b\uff1a<\/p>\n

    \n
  1. \n

    \u5bfc\u5165\u5fc5\u8981\u7684\u5e93\u548c\u5305\uff0c\u4f8b\u5982\uff1a<\/p>\n

    import javax.servlet.http.httpservletrequest;\nimport javax.servlet.http.part;<\/pre>\n<\/li>\n
  2. \n
    \u4f7f\u7528 httpservletrequest \u5bf9\u8c61\u7684 getpart(string name) \u65b9\u6cd5\u83b7\u53d6\u5305\u542b\u6587\u4ef6\u6216\u6587\u672c\u6570\u636e\u7684 part \u5bf9\u8c61\uff0c\u5176\u4e2d name \u662f\u8868\u5355\u4e2d\u5b57\u6bb5\u7684\u540d\u79f0\u3002\u4f8b\u5982\uff1a<\/p>\n
    part filepart = request.getpart(\"image\");<\/pre>\n<\/li>\n
  3. \n
    \u4f7f\u7528 part \u5bf9\u8c61\u7684 getvalue() \u65b9\u6cd5\u6765\u83b7\u53d6\u6587\u4ef6\u6216\u6587\u672c\u6570\u636e\u7684\u5b57\u7b26\u4e32\u8868\u793a\u5f62\u5f0f\uff0c\u4f8b\u5982\uff1a<\/p>\n
    string filename = filepart.getsubmittedfilename();\nstring textdata = filepart.getvalue();<\/pre>\n<\/li>\n
  4. \n
    \u5bf9\u83b7\u53d6\u7684\u6570\u636e\u8fdb\u884c\u9002\u5f53\u7684\u7c7b\u578b\u8f6c\u6362\u6216\u5904\u7406\uff0c\u4f8b\u5982\uff1a<\/p>\n
    int count = Integer.parseInt(request.getParameter(\"count\"));\ndouble price = Double.parseDouble(request.getParameter(\"unitPrice\"));<\/pre>\n<\/li>\n<\/ol>\n
    \u4ee5\u4e0a\u5c31\u662f\u672c\u6587\u7684\u5168\u90e8\u5185\u5bb9\u4e86\uff0c\u662f\u5426\u6709\u987a\u5229\u5e2e\u52a9\u4f60\u89e3\u51b3\u95ee\u9898\uff1f\u82e5\u662f\u80fd\u7ed9\u4f60\u5e26\u6765\u5b66\u4e60\u4e0a\u7684\u5e2e\u52a9\uff0c\u8bf7\u5927\u5bb6\u591a\u591a\u652f\u6301\uff01\u66f4\u591a\u5173\u4e8e\u6587\u7ae0\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u4e5f\u53ef\u5173\u6ce8\u516c\u4f17\u53f7\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
    Java \u540e\u7aef\u5982\u4f55\u4ece \\&#82...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-203362","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/203362","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=203362"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/203362\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=203362"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=203362"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=203362"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}