{"id":44250,"date":"2025-06-18T09:32:55","date_gmt":"2025-06-18T01:32:55","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/44250.html"},"modified":"2025-06-18T09:32:55","modified_gmt":"2025-06-18T01:32:55","slug":"http-%e8%af%b7%e6%b1%82%e4%b8%ad%e7%9a%84-content-type-%e7%b1%bb%e5%9e%8b%e8%af%a6%e8%a7%a3%e5%8f%8a%e5%89%8d%e5%90%8e%e7%ab%af%e7%a4%ba%e4%be%8b%ef%bc%88vue-spring-boot%ef%bc%89","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/44250.html","title":{"rendered":"HTTP \u8bf7\u6c42\u4e2d\u7684 `Content-Type` \u7c7b\u578b\u8be6\u89e3\u53ca\u524d\u540e\u7aef\u793a\u4f8b\uff08Vue + Spring Boot\uff09"},"content":{"rendered":"

\u5728 HTTP \u534f\u8bae\u4e2d，Content-Type \u662f\u4e00\u4e2a\u975e\u5e38\u5173\u952e\u7684\u8bf7\u6c42\u5934\u5b57\u6bb5，\u5b83\u7528\u4e8e\u6307\u793a\u53d1\u9001\u7ed9\u63a5\u6536\u65b9\u7684\u6570\u636e\u7c7b\u578b\u3002\u6b63\u786e\u8bbe\u7f6e Content-Type \u5bf9\u4e8e\u524d\u540e\u7aef\u6570\u636e\u4ea4\u4e92\u81f3\u5173\u91cd\u8981\u3002<\/p>\n

\u672c\u6587\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u5e38\u89c1\u7684 Content-Type \u7c7b\u578b，\u5e76\u7ed3\u5408 Vue \u524d\u7aef \u548c Spring Boot \u540e\u7aef \u7684\u5b9e\u9645\u5f00\u53d1\u573a\u666f，\u6f14\u793a\u5982\u4f55\u8bbe\u7f6e\u3001\u4f20\u9012\u53c2\u6570\u4ee5\u53ca\u540e\u7aef\u5982\u4f55\u63a5\u6536\u8fd9\u4e9b\u53c2\u6570\u3002<\/p>\n

\n

\u4e00\u3001\u4ec0\u4e48\u662f Content-Type？<\/h3>\n

Content-Type \u662f HTTP \u8bf7\u6c42\u6216\u54cd\u5e94\u5934\u4e2d\u7684\u4e00\u4e2a\u5b57\u6bb5，\u7528\u6765\u6307\u5b9a\u6d88\u606f\u4f53（body）\u7684\u5a92\u4f53\u7c7b\u578b（MIME type）\u3002\u5b83\u7684\u683c\u5f0f\u5982\u4e0b：<\/p>\n

Content-Type: <media-type><\/p>\n

\u4f8b\u5982：<\/p>\n

Content-Type: application\/json<\/p>\n

\n

\u4e8c\u3001\u5e38\u89c1\u7684 Content-Type \u7c7b\u578b<\/h3>\n\n\u7c7b\u578bMIME \u7c7b\u578b\u63cf\u8ff0<\/tr>\n\n\n\n\n\n\n
application\/json<\/td>\napplication\/json<\/td>\nJSON \u683c\u5f0f\u6570\u636e，\u73b0\u4ee3 Web \u5f00\u53d1\u4e2d\u6700\u5e38\u7528\u7684\u683c\u5f0f<\/td>\n<\/tr>\n
application\/x-www-form-urlencoded<\/td>\napplication\/x-www-form-urlencoded<\/td>\n\u8868\u5355\u63d0\u4ea4\u7684\u6807\u51c6\u683c\u5f0f，\u952e\u503c\u5bf9\u5f62\u5f0f<\/td>\n<\/tr>\n
multipart\/form-data<\/td>\nmultipart\/form-data<\/td>\n\u4e0a\u4f20\u6587\u4ef6\u65f6\u4f7f\u7528，\u652f\u6301\u4e8c\u8fdb\u5236\u6587\u4ef6\u548c\u6587\u672c\u6df7\u5408<\/td>\n<\/tr>\n
text\/xml \u6216 application\/xml<\/td>\ntext\/xml \/ application\/xml<\/td>\nXML \u683c\u5f0f\u6570\u636e<\/td>\n<\/tr>\n
application\/octet-stream<\/td>\napplication\/octet-stream<\/td>\n\u4e8c\u8fdb\u5236\u6d41\u6570\u636e，\u5e38\u7528\u4e8e\u4e0b\u8f7d\u6587\u4ef6<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n

\u4e09\u3001\u4e0d\u540c Content-Type \u7684\u4f7f\u7528\u573a\u666f\u4e0e\u793a\u4f8b<\/h3>\n

1. application\/json<\/h4>\n

\u4f7f\u7528\u573a\u666f：<\/h5>\n
    \n
  • \u53d1\u9001\u7ed3\u6784\u5316\u6570\u636e（\u5982\u5bf9\u8c61\u3001\u6570\u7ec4）<\/li>\n
  • \u524d\u540e\u7aef\u5206\u79bb\u9879\u76ee\u4e2d\u5e38\u89c1<\/li>\n<\/ul>\n
    Vue \u793a\u4f8b（\u4f7f\u7528 axios）：<\/h5>\n

    import<\/span> axios from<\/span> 'axios'<\/span>;<\/span><\/p>\n

    \/\/ \u7b2c\u4e00\u4e2a\u8bf7\u6c42<\/span>
    \naxios.<\/span>post<\/span>(<\/span>'\/api\/login'<\/span>,<\/span> {<\/span>
    \n username<\/span>:<\/span> 'admin'<\/span>,<\/span>
    \n password<\/span>:<\/span> '123456'<\/span>
    \n}<\/span>,<\/span> {<\/span>
    \n headers<\/span>:<\/span> {<\/span>
    \n 'Content-Type'<\/span>:<\/span> 'application\/json'<\/span>
    \n }<\/span>
    \n}<\/span>)<\/span>;<\/span><\/p>\n

    \/\/ \u7b2c\u4e8c\u4e2a\u8bf7\u6c42<\/span>
    \naxios.<\/span>post<\/span>(<\/span>'\/api\/login2'<\/span>,<\/span> id,<\/span> {<\/span>
    \n headers<\/span>:<\/span> {<\/span>
    \n 'Content-Type'<\/span>:<\/span> 'application\/json'<\/span>
    \n }<\/span>
    \n}<\/span>)<\/span>;<\/span><\/p>\n

    Spring Boot \u63a5\u6536\u65b9\u5f0f：<\/h5>\n

    @RestController<\/span>
    \npublic<\/span> class<\/span> UserController<\/span> {<\/span><\/p>\n

    @PostMapping<\/span>(<\/span>"\/login"<\/span>)<\/span>
    \n public<\/span> ResponseEntity<\/span><<\/span>?<\/span>><\/span><\/span> login<\/span>(<\/span>@RequestBody<\/span> User<\/span> user)<\/span> {<\/span>
    \n return<\/span> ResponseEntity<\/span>.<\/span>ok<\/span>(<\/span>"Received: "<\/span> +<\/span> user.<\/span>getUsername<\/span>(<\/span>)<\/span>)<\/span>;<\/span>
    \n }<\/span><\/p>\n

    @PostMapping<\/span>(<\/span>"\/login2"<\/span>)<\/span>
    \n public<\/span> ResponseEntity<\/span><<\/span>?<\/span>><\/span><\/span> login2<\/span>(<\/span>@RequestBody<\/span> Long<\/span> id)<\/span> {<\/span>
    \n return<\/span> ResponseEntity<\/span>.<\/span>ok<\/span>(<\/span>"Received: "<\/span> +<\/span> id)<\/span>;<\/span>
    \n }<\/span><\/p>\n

    static<\/span> class<\/span> User<\/span> {<\/span>
    \n private<\/span> String<\/span> username;<\/span>
    \n private<\/span> String<\/span> password;<\/span><\/p>\n

    \/\/ getters and setters<\/span>
    \n }<\/span>
    \n}<\/span><\/p>\n

    \n

    2. application\/x-www-form-urlencoded<\/h4>\n

    \u4f7f\u7528\u573a\u666f：<\/h5>\n
      \n
    • HTML \u8868\u5355\u9ed8\u8ba4\u63d0\u4ea4\u65b9\u5f0f<\/li>\n
    • \u4e0d\u9002\u5408\u590d\u6742\u5d4c\u5957\u7ed3\u6784<\/li>\n<\/ul>\n
      Vue \u793a\u4f8b（\u4f7f\u7528 qs \u5e93\u5e8f\u5217\u5316）：<\/h5>\n

      npm<\/span> install<\/span> qs<\/p>\n

      import<\/span> axios from<\/span> 'axios'<\/span>;<\/span>
      \nimport<\/span> qs from<\/span> 'qs'<\/span>;<\/span><\/p>\n

      const<\/span> data =<\/span> qs.<\/span>stringify<\/span>(<\/span>{<\/span>
      \n username<\/span>:<\/span> 'admin'<\/span>,<\/span>
      \n password<\/span>:<\/span> '123456'<\/span>
      \n}<\/span>)<\/span>;<\/span><\/p>\n

      axios.<\/span>post<\/span>(<\/span>'\/api\/login'<\/span>,<\/span> data,<\/span> {<\/span>
      \n headers<\/span>:<\/span> {<\/span>
      \n 'Content-Type'<\/span>:<\/span> 'application\/x-www-form-urlencoded'<\/span>
      \n }<\/span>
      \n}<\/span>)<\/span>;<\/span><\/p>\n

      Spring Boot \u63a5\u6536\u65b9\u5f0f：<\/h5>\n

      @PostMapping<\/span>(<\/span>"\/login"<\/span>)<\/span>
      \npublic<\/span> ResponseEntity<\/span><<\/span>?<\/span>><\/span><\/span> login<\/span>(<\/span>@RequestParam<\/span> String<\/span> username,<\/span> @RequestParam<\/span> String<\/span> password)<\/span> {<\/span>
      \n return<\/span> ResponseEntity<\/span>.<\/span>ok<\/span>(<\/span>"Received: "<\/span> +<\/span> username)<\/span>;<\/span>
      \n}<\/span><\/p>\n

      \u6216\u8005\u4f7f\u7528 Map \u63a5\u6536\u591a\u4e2a\u53c2\u6570：<\/p>\n

      @PostMapping<\/span>(<\/span>"\/login"<\/span>)<\/span>
      \npublic<\/span> ResponseEntity<\/span><<\/span>?<\/span>><\/span><\/span> login<\/span>(<\/span>@RequestParam<\/span> Map<\/span><<\/span>String<\/span>,<\/span> String<\/span>><\/span><\/span> params)<\/span> {<\/span>
      \n return<\/span> ResponseEntity<\/span>.<\/span>ok<\/span>(<\/span>"Received: "<\/span> +<\/span> params.<\/span>get<\/span>(<\/span>"username"<\/span>)<\/span>)<\/span>;<\/span>
      \n}<\/span><\/p>\n

      \n

      3. multipart\/form-data<\/h4>\n

      \u4f7f\u7528\u573a\u666f：<\/h5>\n
        \n
      • \u6587\u4ef6\u4e0a\u4f20<\/li>\n
      • \u5305\u542b\u6587\u4ef6\u548c\u8868\u5355\u6570\u636e\u6df7\u5408\u7684\u60c5\u51b5<\/li>\n<\/ul>\n
        Vue \u793a\u4f8b（\u4f7f\u7528 FormData）：<\/h5>\n

        <template>
        \n <input type="file" @change="uploadFile">
        \n<\/template><\/p>\n

        <script>
        \nimport axios from 'axios';<\/p>\n

        export default {
        \n methods: {
        \n uploadFile(event) {
        \n const file = event.target.files[0];
        \n const formData = new FormData();
        \n formData.append('file', file);<\/p>\n

        axios.post('\/api\/upload', formData, {
        \n headers: {
        \n 'Content-Type': 'multipart\/form-data'
        \n }
        \n });
        \n }
        \n }
        \n};
        \n<\/script><\/p>\n

        Spring Boot \u63a5\u6536\u65b9\u5f0f：<\/h5>\n

        @PostMapping<\/span>(<\/span>"\/upload"<\/span>)<\/span>
        \npublic<\/span> ResponseEntity<\/span><<\/span>?<\/span>><\/span><\/span> upload<\/span>(<\/span>@RequestParam<\/span>(<\/span>"file"<\/span>)<\/span> MultipartFile<\/span> file)<\/span> {<\/span>
        \n return<\/span> ResponseEntity<\/span>.<\/span>ok<\/span>(<\/span>"Received file: "<\/span> +<\/span> file.<\/span>getOriginalFilename<\/span>(<\/span>)<\/span>)<\/span>;<\/span>
        \n}<\/span><\/p>\n

        \u5982\u679c\u540c\u65f6\u4f20\u53c2\u548c\u6587\u4ef6：<\/p>\n

        \/\/ Vue \u7aef\u6dfb\u52a0\u989d\u5916\u5b57\u6bb5
        \nformData.append('username', 'admin');<\/p>\n

        @PostMapping<\/span>(<\/span>"\/upload"<\/span>)<\/span>
        \npublic<\/span> ResponseEntity<\/span><<\/span>?<\/span>><\/span><\/span> upload<\/span>(<\/span>
        \n @RequestParam<\/span>(<\/span>"file"<\/span>)<\/span> MultipartFile<\/span> file,<\/span>
        \n @RequestParam<\/span>(<\/span>"username"<\/span>)<\/span> String<\/span> username)<\/span> {<\/span>
        \n return<\/span> ResponseEntity<\/span>.<\/span>ok<\/span>(<\/span>"User: "<\/span> +<\/span> username +<\/span> ", File: "<\/span> +<\/span> file.<\/span>getOriginalFilename<\/span>(<\/span>)<\/span>)<\/span>;<\/span>
        \n}<\/span><\/p>\n

        \n

        4. application\/octet-stream<\/h4>\n

        \u4f7f\u7528\u573a\u666f：<\/h5>\n
          \n
        • \u4e0b\u8f7d\u6587\u4ef6\u6216\u4f20\u8f93\u539f\u59cb\u4e8c\u8fdb\u5236\u6570\u636e<\/li>\n<\/ul>\n
          Vue \u793a\u4f8b（Blob \u6570\u636e）：<\/h5>\n

          axios.<\/span>get<\/span>(<\/span>'\/api\/download'<\/span>,<\/span> {<\/span>
          \n responseType<\/span>:<\/span> 'blob'<\/span>
          \n}<\/span>)<\/span>.<\/span>then<\/span>(<\/span>response<\/span> =><\/span> {<\/span>
          \n const<\/span> url =<\/span> window.<\/span>URL<\/span>.<\/span>createObjectURL<\/span>(<\/span>new<\/span> Blob<\/span>(<\/span>[<\/span>response.<\/span>data]<\/span>)<\/span>)<\/span>;<\/span>
          \n const<\/span> link =<\/span> document.<\/span>createElement<\/span>(<\/span>'a'<\/span>)<\/span>;<\/span>
          \n link.<\/span>href =<\/span> url;<\/span>
          \n link.<\/span>setAttribute<\/span>(<\/span>'download'<\/span>,<\/span> 'file.txt'<\/span>)<\/span>;<\/span>
          \n document.<\/span>body.<\/span>appendChild<\/span>(<\/span>link)<\/span>;<\/span>
          \n link.<\/span>click<\/span>(<\/span>)<\/span>;<\/span>
          \n}<\/span>)<\/span>;<\/span><\/p>\n

          Spring Boot \u8fd4\u56de\u65b9\u5f0f：<\/h5>\n

          @GetMapping<\/span>(<\/span>"\/download"<\/span>)<\/span>
          \npublic<\/span> ResponseEntity<\/span><<\/span>Resource<\/span>><\/span><\/span> downloadFile<\/span>(<\/span>)<\/span> throws<\/span> IOException<\/span> {<\/span>
          \n Path<\/span> path =<\/span> Paths<\/span>.<\/span>get<\/span>(<\/span>"path\/to\/file.txt"<\/span>)<\/span>;<\/span>
          \n Resource<\/span> resource =<\/span> new<\/span> UrlResource<\/span>(<\/span>path.<\/span>toUri<\/span>(<\/span>)<\/span>)<\/span>;<\/span><\/p>\n

          return<\/span> ResponseEntity<\/span>.<\/span>ok<\/span>(<\/span>)<\/span>
          \n .<\/span>header<\/span>(<\/span>HttpHeaders<\/span>.<\/span>CONTENT_DISPOSITION<\/span>,<\/span> "attachment; filename=\\\\""<\/span> +<\/span> resource.<\/span>getFilename<\/span>(<\/span>)<\/span> +<\/span> "\\\\""<\/span>)<\/span>
          \n .<\/span>body<\/span>(<\/span>resource)<\/span>;<\/span>
          \n}<\/span><\/p>\n

          \n

          \u56db\u3001\u603b\u7ed3\u5bf9\u6bd4\u8868<\/h3>\n\nContent-Type\u7528\u9014Vue \u4f20\u53c2\u65b9\u5f0fSpring Boot \u63a5\u6536\u65b9\u5f0f<\/tr>\n\n\n\n\n\n
          application\/json<\/td>\n\u7ed3\u6784\u5316\u6570\u636e<\/td>\n\u76f4\u63a5\u4f20\u5bf9\u8c61<\/td>\n@RequestBody<\/td>\n<\/tr>\n
          application\/x-www-form-urlencoded<\/td>\n\u8868\u5355\u6570\u636e<\/td>\nqs.stringify()<\/td>\n@RequestParam, Map<\/td>\n<\/tr>\n
          multipart\/form-data<\/td>\n\u6587\u4ef6\u4e0a\u4f20<\/td>\nFormData<\/td>\nMultipartFile<\/td>\n<\/tr>\n
          application\/octet-stream<\/td>\n\u4e8c\u8fdb\u5236\u6570\u636e<\/td>\nresponseType: 'blob'<\/td>\n\u8fd4\u56de Resource<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
          \n

          \u4e94\u3001\u6ce8\u610f\u4e8b\u9879<\/h3>\n
            \n
          • JSON \u683c\u5f0f\u5fc5\u987b\u4e25\u683c\u7b26\u5408\u8bed\u6cd5\u89c4\u8303，\u5426\u5219\u540e\u7aef\u65e0\u6cd5\u89e3\u6790\u3002<\/li>\n
          • \u4e0a\u4f20\u6587\u4ef6\u65f6\u4e0d\u80fd\u4f7f\u7528 JSON，\u5fc5\u987b\u4f7f\u7528 multipart\/form-data\u3002<\/li>\n
          • \u4f7f\u7528 FormData \u65f6\u4e0d\u8981\u624b\u52a8\u8bbe\u7f6e Content-Type ，\u6d4f\u89c8\u5668\u4f1a\u81ea\u52a8\u5904\u7406\u8fb9\u754c（boundary）\u3002<\/li>\n
          • \u5982\u679c\u4f7f\u7528\u4e86\u5168\u5c40\u62e6\u622a\u5668\u6216\u5c01\u88c5\u4e86 axios \u5b9e\u4f8b，\u8bf7\u786e\u4fdd headers \u8bbe\u7f6e\u751f\u6548\u3002<\/li>\n<\/ul>\n
            \n

            \u516d\u3001\u6269\u5c55：\u5176\u4ed6 Content-Type \u7c7b\u578b<\/h3>\n\n\u7c7b\u578b\u8bf4\u660e<\/tr>\n\n\n\n\n\n\n
            text\/plain<\/td>\n\u7eaf\u6587\u672c<\/td>\n<\/tr>\n
            text\/html<\/td>\nHTML \u6587\u6863<\/td>\n<\/tr>\n
            application\/pdf<\/td>\nPDF \u6587\u4ef6<\/td>\n<\/tr>\n
            image\/jpeg, image\/png<\/td>\n\u56fe\u7247\u683c\u5f0f<\/td>\n<\/tr>\n
            video\/mp4, audio\/mpeg<\/td>\n\u97f3\u89c6\u9891\u683c\u5f0f<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
            \n

            \u4e03\u3001\u7ed3\u8bed<\/h3>\n

            \u638c\u63e1 Content-Type \u662f\u524d\u540e\u7aef\u4ea4\u4e92\u7684\u57fa\u7840，\u5c24\u5176\u5728 Vue + Spring Boot \u67b6\u6784\u4e0b，\u5408\u7406\u9009\u62e9\u548c\u8bbe\u7f6e Content-Type \u53ef\u4ee5\u663e\u8457\u63d0\u5347\u63a5\u53e3\u7684\u5065\u58ee\u6027\u548c\u6613\u7528\u6027\u3002\u5e0c\u671b\u672c\u7bc7\u6587\u7ae0\u80fd\u5e2e\u52a9\u4f60\u66f4\u6e05\u6670\u5730\u7406\u89e3\u4e0d\u540c\u7c7b\u578b\u7684\u4f7f\u7528\u573a\u666f\u548c\u5b9e\u73b0\u65b9\u5f0f\u3002<\/p>\n

            \u5982\u679c\u4f60\u89c9\u5f97\u8fd9\u7bc7\u6587\u7ae0\u5bf9\u4f60\u6709\u5e2e\u52a9，\u6b22\u8fce\u70b9\u8d5e\u3001\u6536\u85cf\u6216\u8f6c\u53d1！<\/p>\n

            📌 \u76f8\u5173\u9605\u8bfb\u63a8\u8350：<\/p>\n

              \n
            • Vue + Spring Boot \u524d\u540e\u7aef\u4ea4\u4e92\u5b9e\u8df5：\u6b63\u786e\u4f7f\u7528 Content-Type: application\/json \u53ca\u53c2\u6570\u4f20\u9012\u65b9\u5f0f<\/li>\n<\/ul>\n

              \u5982\u6709\u7591\u95ee\u6216\u5efa\u8bae，\u6b22\u8fce\u7559\u8a00\u4ea4\u6d41！<\/p>\n","protected":false},"excerpt":{"rendered":"

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