{"id":26960,"date":"2023-07-22T17:13:56","date_gmt":"2024-02-06T01:36:21","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%9c%a8%e4%bf%9d%e5%ad%98%e5%89%8d%e5%a4%84%e7%90%86django%e4%b8%8a%e4%bc%a0%e7%9a%84%e5%9b%be%e5%83%8f-2\/"},"modified":"2025-08-12T00:00:46","modified_gmt":"2025-08-11T16:00:46","slug":"%e5%9c%a8%e4%bf%9d%e5%ad%98%e5%89%8d%e5%a4%84%e7%90%86django%e4%b8%8a%e4%bc%a0%e7%9a%84%e5%9b%be%e5%83%8f-2","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%9c%a8%e4%bf%9d%e5%ad%98%e5%89%8d%e5%a4%84%e7%90%86django%e4%b8%8a%e4%bc%a0%e7%9a%84%e5%9b%be%e5%83%8f-2\/","title":{"rendered":"\u5728\u4fdd\u5b58\u524d\u5904\u7406Django\u4e0a\u4f20\u7684\u56fe\u50cf"},"content":{"rendered":"

\u6211\u5728\u8c03\u67e5\u4e2d\u53d1\u73b0\uff0c\u5728Django\u4e0a\u4f20\u56fe\u50cf\u540e\uff0c\u6211\u60f3\u5728\u4fdd\u5b58\u4e4b\u524d\u5bf9\u5176\u8fdb\u884c\u5904\u7406\uff0c\u4f46\u5927\u591a\u6570\u60c5\u51b5\u4e0b\uff0c\u4eba\u4eec\u901a\u5e38\u662f\u5148\u4fdd\u5b58\uff0c\u7136\u540e\u518d\u91cd\u65b0\u6253\u5f00\u518d\u8fdb\u884c\u5904\u7406\u7684\u6a21\u5f0f\u3002
\n\u501f\u52a9AI\u7684\u529b\u91cf\uff0c\u6211\u6210\u529f\u5730\u5b9e\u73b0\u4e86\u5f88\u597d\u7684\u5904\u7406\u6548\u679c\uff0c\u73b0\u5728\u4e0e\u5927\u5bb6\u5206\u4eab\u3002\u6211\u8ba4\u4e3a\u8fd9\u53ef\u80fd\u662f\u5df2\u7ecf\u6709\u4eba\u7814\u7a76\u8fc7\u7684\u5185\u5bb9\uff0c\u6240\u4ee5\u53ef\u80fd\u662f\u4e8c\u6b21\u521b\u4f5c\u3002<\/p>\n

\u7248\u672c\u6211\u6b63\u5728\u4f7f\u7528Python\u548cDjango\u7684\u7248\u672c\u3002\uff08\u867d\u7136\u65e0\u5173\u7d27\u8981\uff0c\u4f46\u662fDjango\u7ecf\u5e38\u6709\u91cd\u5927\u7684\u7248\u672c\u66f4\u6539\uff0c\u6240\u4ee5\u5728\u53d1\u5e03\u65f6\u8bf7\u52a1\u5fc5\u5199\u6e05\u695a\u7248\u672c\u3002\uff09
\n\u6211\u5728\u6811\u8393\u6d3e4B\u4e0a\u7684Docker\u5bb9\u5668\u4e2d\u8fd0\u884c\u5b83\u3002<\/p>\n
# cat \/etc\/os-release<\/span>\r\nPRETTY_NAME<\/span>=<\/span>\"Debian GNU\/Linux 12 (bookworm)\"<\/span>\r\nNAME<\/span>=<\/span>\"Debian GNU\/Linux\"<\/span>\r\nVERSION_ID<\/span>=<\/span>\"12\"<\/span>\r\nVERSION<\/span>=<\/span>\"12 (bookworm)\"<\/span>\r\nVERSION_CODENAME<\/span>=<\/span>bookworm\r\nID<\/span>=<\/span>debian\r\nHOME_URL<\/span>=<\/span>\"https:\/\/www.debian.org\/\"<\/span>\r\nSUPPORT_URL<\/span>=<\/span>\"https:\/\/www.debian.org\/support\"<\/span>\r\nBUG_REPORT_URL<\/span>=<\/span>\"https:\/\/bugs.debian.org\/\"<\/span>\r\n\r\n# python --version<\/span>\r\nPython 3.11.4\r\n\r\n# python -m django --version<\/span>\r\n4.2.4\r\n<\/code><\/pre>\n
\u5b9e\u65bd
\n\u6211\u6b63\u5728\u9010\u4e2a\u4e0a\u4f20\u6587\u4ef6\uff0c\u4f46\u6700\u91cd\u8981\u7684\u662fviews.py\u3002\u5173\u4e8e\u5b83\u7684\u8bf4\u660e\u5c06\u5728\u7a0d\u540e\u63d0\u5230\u3002<\/p>\n
    \u30e2\u30c7\u30eb<\/ul>\n
    from<\/span> django.db<\/span> import<\/span> models<\/span>\r\n\r\nclass<\/span> UploadImage<\/span>(<\/span>models<\/span>.<\/span>Model<\/span>):<\/span>\r\n    # \u753b\u50cf\r\n<\/span>    image<\/span> =<\/span> models<\/span>.<\/span>ImageField<\/span>(<\/span>upload_to<\/span>=<\/span>'<\/span>img\/<\/span>'<\/span>)<\/span>\r\n    # \u4fdd\u5b58\u65e5\u6642\r\n<\/span>    pub_date<\/span> =<\/span> models<\/span>.<\/span>DateTimeField<\/span>(<\/span>'<\/span>date published<\/span>'<\/span>,<\/span> auto_now_add<\/span>=<\/span>True<\/span>)<\/span>\r\n\r\n    # \u753b\u50cf\u306e\u540d\u79f0\u3092\u8868\u793a\r\n<\/span>    def<\/span> __str__<\/span>(<\/span>self<\/span>):<\/span>\r\n        return<\/span> self<\/span>.<\/span>image<\/span>.<\/span>name<\/span>\r\n<\/code><\/pre>\n
      \u753b\u50cf\u6295\u7a3f\u7528\u306e\u9759\u7684\u30d5\u30a1\u30a4\u30eb<\/ul>\n
      <!doctype html><\/span>\r\n<html<\/span> lang=<\/span>\"ja\"<\/span>><\/span>\r\n<head><\/span>\r\n    <meta<\/span> charset=<\/span>\"utf-8\"<\/span>><\/span>\r\n    <title><\/span>{{title}}<\/title><\/span>\r\n<\/head><\/span>\r\n<body><\/span>\r\n    <h1><\/span>{{title}}<\/h1><\/span>\r\n    <div><\/span>\r\n        {% if id is not None %}\r\n        <h2><\/span>\u753b\u50cf\u304c\u767b\u9332\u3055\u308c\u307e\u3057\u305f<\/h2><\/span>\r\n        <p><\/span>\u753b\u50cf\u306eID\u306f {{id}} \u3067\u3059<\/p><\/span>\r\n        {% endif %}\r\n    <\/div><\/span>\r\n    <div><\/span>\r\n        <h2><\/span>\u753b\u50cf\u3092\u767b\u9332\u3059\u308b<\/h2><\/span>\r\n        <form<\/span> action=<\/span>\"{% url 'img_form' %}\"<\/span> method=<\/span>\"post\"<\/span> enctype=<\/span>\"multipart\/form-data\"<\/span>><\/span>\r\n            {% csrf_token %}\r\n            <p><\/span>{{ upload_form.as_p }}<\/p><\/span>\r\n            <p><input<\/span> type=<\/span>\"submit\"<\/span> value=<\/span>\"\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\"<\/span>><\/p><\/span>\r\n        <\/form><\/span>\r\n    <\/div><\/span>\r\n<\/body><\/span>\r\n<\/html><\/span>\r\n<\/code><\/pre>\n
        \u6295\u7a3f\u7528\u30d5\u30a9\u30fc\u30e0<\/ul>\n
        from<\/span> django<\/span> import<\/span> forms<\/span>\r\nfrom<\/span> .models<\/span> import<\/span> UploadImage<\/span>\r\n\r\nclass<\/span> UploadForm<\/span>(<\/span>forms<\/span>.<\/span>ModelForm<\/span>):<\/span>\r\n    class<\/span> Meta<\/span>:<\/span>\r\n        model<\/span> =<\/span> UploadImage<\/span>\r\n        fields<\/span> =<\/span> (<\/span>'<\/span>image<\/span>'<\/span>,<\/span> )<\/span>\r\n<\/code><\/pre>\n
          \u6295\u7a3f\u6642\u306e\u51e6\u7406<\/ul>\n
          from<\/span> django.shortcuts<\/span> import<\/span> render<\/span>,<\/span> get_object_or_404<\/span>\r\nfrom<\/span> .forms<\/span> import<\/span> UploadForm<\/span>,<\/span> DisplaySettingsForm<\/span>\r\nfrom<\/span> .models<\/span> import<\/span> UploadImage<\/span>\r\nfrom<\/span> mqttlib.message<\/span> import<\/span> HOST<\/span>,<\/span> PORT<\/span>,<\/span> DisplayImages<\/span>\r\n\r\nfrom<\/span> PIL<\/span> import<\/span> Image<\/span>\r\nfrom<\/span> io<\/span> import<\/span> BytesIO<\/span>\r\nfrom<\/span> django.core.files.uploadedfile<\/span> import<\/span> InMemoryUploadedFile<\/span>\r\nfrom<\/span> pathlib<\/span> import<\/span> Path<\/span>\r\n\r\n# \u753b\u50cf\u30b5\u30a4\u30ba\r\n<\/span>IMG_SIZE<\/span>:<\/span> tuple<\/span>[<\/span>int<\/span>,<\/span> int<\/span>]<\/span> =<\/span> (<\/span>800<\/span>,<\/span> 480<\/span>)<\/span>\r\n\r\ndef<\/span> upload_img_form<\/span>(<\/span>request<\/span>):<\/span>\r\n    params<\/span> =<\/span> {<\/span>\r\n        '<\/span>title<\/span>'<\/span>:<\/span> '<\/span>\u753b\u50cf\u306e\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9<\/span>'<\/span>,<\/span>\r\n        '<\/span>upload_form<\/span>'<\/span>:<\/span> UploadForm<\/span>(),<\/span>\r\n        '<\/span>id<\/span>'<\/span>:<\/span> None<\/span>,<\/span>\r\n    }<\/span>\r\n\r\n    if <\/span>(<\/span>request<\/span>.<\/span>method<\/span> ==<\/span> '<\/span>POST<\/span>'<\/span>):<\/span>\r\n        form<\/span>:<\/span> UploadForm<\/span> =<\/span> UploadForm<\/span>(<\/span>request<\/span>.<\/span>POST<\/span>,<\/span> request<\/span>.<\/span>FILES<\/span>)<\/span>\r\n        if<\/span> form<\/span>.<\/span>is_valid<\/span>():<\/span>\r\n            # \u30e1\u30e2\u30ea\u4e0a\u306e\u30c7\u30fc\u30bf\u3092\u8aad\u307f\u8fbc\u3080\r\n<\/span>            mem_img<\/span>:<\/span> InMemoryUploadedFile<\/span> =<\/span> form<\/span>.<\/span>cleaned_data<\/span>[<\/span>'<\/span>image<\/span>'<\/span>]<\/span>\r\n            # InMemoryUploadedFile\u306e\u30c7\u30fc\u30bf\u3092BytesIO\u306b\u30b3\u30d4\u30fc\r\n<\/span>            byte_io<\/span>:<\/span> BytesIO<\/span> =<\/span> BytesIO<\/span>()<\/span>\r\n            for<\/span> chunk<\/span> in<\/span> mem_img<\/span>.<\/span>chunks<\/span>():<\/span>\r\n                byte_io<\/span>.<\/span>write<\/span>(<\/span>chunk<\/span>)<\/span>\r\n            byte_io<\/span>.<\/span>seek<\/span>(<\/span>0<\/span>)<\/span>\r\n\r\n            # BytesIO\u304b\u3089PIL Image\u3092\u8aad\u307f\u8fbc\u3080\r\n<\/span>            org_img<\/span>:<\/span> Image<\/span>.<\/span>Image<\/span> =<\/span> Image<\/span>.<\/span>open<\/span>(<\/span>byte_io<\/span>)<\/span>\r\n\r\n            # \u753b\u50cf\u306e\u52a0\u5de5\r\n<\/span>            tgt_img<\/span>:<\/span> Image<\/span>.<\/span>Image<\/span> =<\/span> org_img<\/span>.<\/span>resize<\/span>(<\/span>IMG_SIZE<\/span>)<\/span>\r\n            image_io<\/span>:<\/span> BytesIO<\/span> =<\/span> BytesIO<\/span>()<\/span>\r\n            tgt_img<\/span>.<\/span>save<\/span>(<\/span>image_io<\/span>,<\/span> format<\/span>=<\/span>\"<\/span>BMP<\/span>\"<\/span>)<\/span>\r\n            bmp_path<\/span>:<\/span> str<\/span> =<\/span> str<\/span>(<\/span>Path<\/span>(<\/span>mem_img<\/span>.<\/span>name<\/span>).<\/span>with_suffix<\/span>(<\/span>'<\/span>.bmp<\/span>'<\/span>))<\/span>\r\n\r\n            # \u753b\u50cf\u306e\u4fdd\u5b58\r\n<\/span>            uploaded_file<\/span> =<\/span> InMemoryUploadedFile<\/span>(<\/span>\r\n                image_io<\/span>,<\/span> None<\/span>,<\/span> bmp_path<\/span>,<\/span> mem_img<\/span>.<\/span>content_type<\/span>,<\/span>\r\n                image_io<\/span>.<\/span>tell<\/span>(),<\/span> None<\/span>\r\n            )<\/span>\r\n            form<\/span>.<\/span>cleaned_data<\/span>[<\/span>'<\/span>image<\/span>'<\/span>]<\/span> =<\/span> uploaded_file<\/span>\r\n            form<\/span>.<\/span>instance<\/span>.<\/span>image<\/span> =<\/span> uploaded_file<\/span>\r\n            post<\/span> =<\/span> form<\/span>.<\/span>save<\/span>()<\/span>\r\n            params<\/span>[<\/span>'<\/span>id<\/span>'<\/span>]<\/span> =<\/span> post<\/span>.<\/span>id<\/span>\r\n            pass<\/span>\r\n    return<\/span> render<\/span>(<\/span>request<\/span>,<\/span> '<\/span>upload_app\/img_form.html<\/span>'<\/span>,<\/span> params<\/span>)<\/span>\r\n<\/code><\/pre>\n
          \u53d8\u91cf\u540d\u53ef\u80fd\u7a0d\u5fae\u4e0e\u5185\u5bb9\u4e0d\u592a\u76f8\u7b26\uff0c\u4f46\u8bf7\u4e0d\u8981\u5728\u610f\u3002
          \n\u6bcf\u4e2a\u5904\u7406\u5757\u90fd\u6709\u6ce8\u91ca\uff0c\u6240\u4ee5\u6211\u8ba4\u4e3a\u60a8\u5927\u81f4\u80fd\u591f\u7406\u89e3\u6b63\u5728\u8fdb\u884c\u7684\u5904\u7406\u5185\u5bb9\u3002
          \n\u8981\u5c06\u5176\u8f6c\u6362\u6210\u65e5\u8bed\uff0c\u53ef\u4ee5\u6cbf\u4ee5\u4e0b\u6d41\u7a0b\u8fdb\u884c\u3002<\/p>\n
            \n
          1. \n
              \u63d0\u53d6\u5b58\u50a8\u5728\u5185\u5b58\u4e2d\u7684POST\u6570\u636e\u4e2d\u7684InMemoryUploadedFile\uff08\u6b64\u65f6\u4ec5\u5b58\u5728\u4e8e\u5185\u5b58\u4e2d\uff09\u3002<\/ol>\n<\/li>\n<\/ol>\n
              \u5c06\u5176\u8f6c\u6362\u4e3aPIL.Image\uff0c\u5c06\u5176\u79fb\u52a8\u5230BytesIO\u7f13\u51b2\u533a\uff0c\u5e76\u7528PIL.Image\u6253\u5f00\u3002<\/p>\n
              \u5bf9\u56fe\u50cf\u6570\u636e\u8fdb\u884c\u5904\u7406\u3002\u8fd9\u91cc\u5305\u62ec\u5c06\u5176\u5927\u5c0f\u8c03\u6574\u4e3aIMG_SIZE\u5e76\u5c06\u6587\u4ef6\u5185\u5bb9\u8f6c\u6362\u4e3aBMP\u683c\u5f0f\u3002<\/p>\n
              \u4ecePIL.Image\u8f6c\u6362\u56deInMemoryUploadedFile\uff08\u4e0e\u4e0a\u8ff0\u64cd\u4f5c\u76f8\u53cd\uff09\u3002<\/p>\n
              \u5c06\u5904\u7406\u540e\u7684\u6570\u636e\u66ff\u6362\u56de\u539f\u59cb\u6570\u636e\u5e76\u4fdd\u5b58\u3002<\/p>\n
              \u5728\u6700\u540e\u4e00\u6b21\u66ff\u6362\u4e2d\uff0c\u4e5f\u8bb8\u53ea\u9700\u8981\u5c06\u52a0\u5de5\u540e\u7684\u6570\u636euploaded_file\u8d4b\u503c\u7ed9form.instance.image\uff0c\u5e76\u4e0d\u9700\u8981\u5c06\u5176\u8d4b\u503c\u7ed9form.cleaned_data[‘image’]\uff0c\u4f46\u6211\u611f\u89c9\u53d8\u91cf\u7684\u5185\u5bb9\u6709\u70b9\u6df7\u4e71\uff0c\u6240\u4ee5\u8fd8\u662f\u52a0\u4e0a\u4e86\u3002<\/p>\n
              \u53ef\u4ee5\u53c2\u8003
              \n\u4f7f\u7528Django\u8fdb\u884c\u7b80\u5355\u56fe\u50cf\u5904\u7406\uff08\u4f7f\u7528PIL\u5e93\uff09
              \n\u4f7f\u7528Django\u548cPillow\u5c06\u6ce8\u518c\u56fe\u7247\u8c03\u6574\u5230\u7279\u5b9a\u5c3a\u5bf8<\/p>\n","protected":false},"excerpt":{"rendered":"
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