package top.qaqaq.P213;\r\n\r\nimport jakarta.servlet.ServletException;\r\nimport jakarta.servlet.ServletInputStream;\r\nimport jakarta.servlet.http.HttpServlet;\r\nimport jakarta.servlet.http.HttpServletRequest;\r\nimport jakarta.servlet.http.HttpServletResponse;\r\n\r\nimport java.io.IOException;\r\n\r\n\/**\r\n * @author RichieZhang\r\n * @create 2022-12-08 \u4e0b\u5348 9:08\r\n *\/\r\npublic class UploadServlet extends HttpServlet {\r\n \/**\r\n * \u7528\u6765\u5904\u7406\u4e0a\u4f20\u7684\u6570\u636e\r\n * @param req\r\n * @param resp\r\n * @throws ServletException\r\n * @throws IOException\r\n *\/\r\n @Override\r\n protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {\r\n\/\/ super.doPost(req, resp);\r\n\r\n \/*\r\n \u6587\u4ef6\u7684\u4e0a\u4f20\u4ecb\u7ecd\r\n\r\n 1\u3001\u8981\u6709\u4e00\u4e2a form \u6807\u7b7e\uff0cmethod=post \u8bf7\u6c42\r\n 2\u3001form \u6807\u7b7e\u7684 encType \u5c5e\u6027\u503c\u5fc5\u987b\u4e3a multipart\/form-data \u503c\r\n 3\u3001\u5728 form \u6807\u7b7e\u4e2d\u4f7f\u7528 input type=file \u6dfb\u52a0\u4e0a\u4f20\u7684\u6587\u4ef6\r\n 4\u3001\u7f16\u5199\u670d\u52a1\u5668\u4ee3\u7801\uff08Servlet \u7a0b\u5e8f\uff09\u63a5\u6536\uff0c\u5904\u7406\u4e0a\u4f20\u7684\u6570\u636e\u3002\r\n\r\n encType=multipart\/form-data \u8868\u793a\u63d0\u4ea4\u7684\u6570\u636e\uff0c\u4ee5\u591a\u6bb5\uff08\u6bcf\u4e00\u4e2a\u8868\u5355\u9879\u4e00\u4e2a\u6570\u636e\u6bb5\uff09\u7684\u5f62\u5f0f\u8fdb\u884c\u62fc\u63a5\uff0c\u7136\u540e\u4ee5\u4e8c\u8fdb\u5236\u6d41\u7684\u5f62\u5f0f\u53d1\u9001\u7ed9\u670d\u52a1\u5668\r\n *\/\r\n\r\n System.out.println(\"\u6587\u4ef6\u4e0a\u4f20\u8fc7\u6765\u4e86\");\r\n\r\n \/\/\u4e0d\u80fd\u76f4\u63a5\u8bfb\u53d6\r\n \/\/System.out.println(req.getParameter(\"username\"));\r\n \/\/System.out.println(req.getParameter(\"photo\"));\r\n\r\n \/\/\u9700\u8981\u7528\u6d41\u8bfb\u53d6\r\n ServletInputStream inputStream = req.getInputStream();\r\n\r\n byte[] buffer = new byte[1024000];\r\n int read = inputStream.read(buffer);\r\n System.out.println(new String(buffer,0,read));\r\n }\r\n}\r\n<\/code><\/pre>\n\n\n\n<%--\r\n Created by IntelliJ IDEA.\r\n User: ZRich\r\n Date: 2022\/12\/8\r\n Time: \u4e0b\u5348 9:03\r\n To change this template use File | Settings | File Templates.\r\n--%>\r\n<%@ page contentType=\"text\/html;charset=UTF-8\" language=\"java\" %>\r\n<html>\r\n<head>\r\n <title>Title<\/title>\r\n<\/head>\r\n<body>\r\n <form action=\"http:\/\/localhost:8080\/JavaWeb_Code_IO\/uploadServlet\" method=\"post\" enctype=\"multipart\/form-data\">\r\n \u7528\u6237\u540d\uff1a<input type=\"text\" name=\"username\" \/> <br\/>\r\n \u5934\u50cf\uff1a<input type=\"file\" name=\"photo\" \/> <br\/>\r\n <input type=\"submit\" value=\"\u4e0a\u4f20\">\r\n <\/form>\r\n\r\n<\/body>\r\n<\/html>\r\n<\/code><\/pre>\n\n\n\n <servlet>\r\n <servlet-name>UploadServlet<\/servlet-name>\r\n <servlet-class>top.qaqaq.P213.UploadServlet<\/servlet-class>\r\n <\/servlet>\r\n <servlet-mapping>\r\n <servlet-name>UploadServlet<\/servlet-name>\r\n <url-pattern>\/uploadServlet<\/url-pattern>\r\n <\/servlet-mapping><\/code><\/pre>\n\n\n\n\u6587\u4ef6\u4e0a\u4f20-\u4e0a\u4f20\u7684http\u534f\u8bae\u5185\u5bb9\u4ecb\u7ecd<\/p>\n\n\n\n![\"\"](\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\")
<\/div><\/figure>\n\n\n\n\u6587\u4ef6\u4e0a\u4f20-\u4e0a\u4f20\u5408\u7528\u5230\u7684\u7c7b\u548c\u65b9\u6cd5\u7684\u4ecb\u7ecd\u3001\u6587\u4ef6\u4e0a\u4f20-\u4f7f\u7528fileupload\u89e3\u6790\u4e0a\u4f20\u7684\u6570\u636e<\/p>\n\n\n\n
package top.qaqaq.P215;\r\n\r\nimport jakarta.servlet.ServletException;\r\nimport jakarta.servlet.http.HttpServlet;\r\nimport jakarta.servlet.http.HttpServletRequest;\r\nimport jakarta.servlet.http.HttpServletResponse;\r\nimport org.apache.commons.fileupload.FileItem;\r\nimport org.apache.commons.fileupload.FileItemFactory;\r\nimport org.apache.commons.fileupload.FileUploadException;\r\nimport org.apache.commons.fileupload.RequestContext;\r\nimport org.apache.commons.fileupload.disk.DiskFileItemFactory;\r\nimport org.apache.commons.fileupload.servlet.ServletFileUpload;\r\n\r\nimport java.io.File;\r\nimport java.io.IOException;\r\nimport java.util.List;\r\n\r\n\/**\r\n * @author RichieZhang\r\n * @create 2022-12-08 \u4e0b\u5348 9:51\r\n *\/\r\npublic class UploadServlet extends HttpServlet {\r\n @Override\r\n protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {\r\n\/\/ super.doPost(req, resp);\r\n\r\n \/*\r\n commons-fileupload.jar \u5e38\u7528 API \u4ecb\u7ecd\u8bf4\u660e\r\n\r\n commons-fileupload.jar \u9700\u8981\u4f9d\u8d56 commons-io.jar \u8fd9\u4e2a\u5305\uff0c\u6240\u4ee5\u4e24\u4e2a\u5305\u6211\u4eec\u90fd\u8981\u5f15\u5165\u3002\r\n\r\n \u7b2c\u4e00\u6b65\uff0c\u5c31\u662f\u9700\u8981\u5bfc\u5165\u4e24\u4e2a jar \u5305\uff1a\r\n commons-fileupload-1.4.jar\r\n commons-io-2.11.0.jar\r\n *\/\r\n\r\n \/*\r\n commons-fileupload.jar \u548c commons-io.jar \u5305\u4e2d\uff0c\u6211\u4eec\u5e38\u7528\u7684\u7c7b\u6709\u54ea\u4e9b\uff1f\r\n\r\n ServletFileUpload \u7c7b\uff0c\u7528\u4e8e\u89e3\u6790\u4e0a\u4f20\u7684\u6570\u636e\u3002\r\n\r\n FileItem \u7c7b\uff0c\u8868\u793a\u6bcf\u4e00\u4e2a\u8868\u5355\u9879\u3002\r\n\r\n boolean ServletFileUpload.isMultipartContent(HttpServletRequest request);\r\n \u5224\u65ad\u5f53\u524d\u4e0a\u4f20\u7684\u6570\u636e\u683c\u5f0f\u662f\u5426\u662f\u591a\u6bb5\u7684\u683c\u5f0f\u3002\r\n\r\n public List<FileItem> parseRequest(HttpServletRequest request)\r\n \u89e3\u6790\u4e0a\u4f20\u7684\u6570\u636e\r\n\r\n boolean FileItem.isFormField()\r\n \u5224\u65ad\u5f53\u524d\u8fd9\u4e2a\u8868\u5355\u9879\uff0c\u662f\u5426\u662f\u666e\u901a\u7684\u8868\u5355\u9879\u3002\u8fd8\u662f\u4e0a\u4f20\u7684\u6587\u4ef6\u7c7b\u578b\u3002\r\n true \u8868\u793a\u666e\u901a\u7c7b\u578b\u7684\u8868\u5355\u9879\r\n false \u8868\u793a\u4e0a\u4f20\u7684\u6587\u4ef6\u7c7b\u578b\r\n\r\n String FileItem.getFieldName()\r\n \u83b7\u53d6\u8868\u5355\u9879\u7684 name \u5c5e\u6027\u503c\r\n\r\n String FileItem.getString()\r\n \u83b7\u53d6\u5f53\u524d\u8868\u5355\u9879\u7684\u503c\u3002\r\n\r\n String FileItem.getName();\r\n \u83b7\u53d6\u4e0a\u4f20\u7684\u6587\u4ef6\u540d\r\n\r\n void FileItem.write( file );\r\n \u5c06\u4e0a\u4f20\u7684\u6587\u4ef6\u5199\u5230 \u53c2\u6570 file \u6240\u6307\u5411\u7684\u78c1\u76d8\u4f4d\u7f6e \u3002\r\n *\/\r\n\r\n \/\/1 \u5148\u5224\u65ad\u4e0a\u4f20\u7684\u6570\u636e\u662f\u5426\u662f\u591a\u6bb5\u6570\u636e\uff08\u53ea\u6709\u662f\u591a\u6bb5\u7684\u6570\u636e\uff0c\u624d\u662f\u6587\u4ef6\u4e0a\u4f20\u7684\uff09\r\n if (ServletFileUpload.isMultipartContent((RequestContext) req)) {\r\n \/\/\u521b\u5efaFileItemFactory\u5de5\u5382\u5b9e\u73b0\u7c7b\r\n FileItemFactory fileItemFactory = new DiskFileItemFactory();\r\n \/\/ \u521b\u5efa\u7528\u4e8e\u89e3\u6790\u4e0a\u4f20\u6570\u636e\u7684\u5de5\u5177\u7c7bServletFileUpload\u7c7b\r\n ServletFileUpload servletFileUpload = new ServletFileUpload(fileItemFactory);\r\n \/\/ \u89e3\u6790\u4e0a\u4f20\u7684\u6570\u636e\uff0c\u5f97\u5230\u6bcf\u4e00\u4e2a\u8868\u5355\u9879FileItem\r\n try {\r\n List<FileItem> list = servletFileUpload.parseRequest((RequestContext) req);\r\n \/\/ \u5faa\u73af\u5224\u65ad\uff0c\u6bcf\u4e00\u4e2a\u8868\u5355\u9879\uff0c\u662f\u666e\u901a\u7c7b\u578b\uff0c\u8fd8\u662f\u4e0a\u4f20\u7684\u6587\u4ef6\r\n for (FileItem fileItem : list) {\r\n if (fileItem.isFormField()) {\r\n \/\/ \u666e\u901a\u8868\u5355\u9879\r\n System.out.println(\"\u8868\u5355\u9879\u7684name\u5c5e\u6027\u503c\uff1a\" + fileItem.getFieldName());\r\n \/\/ \u53c2\u6570UTF-8 \u89e3\u51b3\u4e71\u7801\u95ee\u9898\r\n System.out.println(\"\u8868\u5355\u9879\u7684value\u5c5e\u6027\u503c\uff1a\" + fileItem.getString(\"UTF-8\"));\r\n } else {\r\n \/\/ \u4e0a\u4f20\u7684\u6587\u4ef6\r\n System.out.println(\"\u8868\u5355\u9879\u7684name\u5c5e\u6027\u503c\uff1a\" + fileItem.getFieldName());\r\n System.out.println(\"\u4e0a\u4f20\u7684\u6587\u4ef6\u540d\uff1a\" + fileItem.getName());\r\n\r\n fileItem.write(new File(\"C:\\\\\" + fileItem.getName()));\r\n }\r\n }\r\n\r\n } catch (FileUploadException e) {\r\n e.printStackTrace();\r\n } catch (Exception e) {\r\n e.printStackTrace();\r\n }\r\n }\r\n }\r\n}\r\n<\/code><\/pre>\n\n\n\n<%--\r\n Created by IntelliJ IDEA.\r\n User: ZRich\r\n Date: 2022\/12\/8\r\n Time: \u4e0b\u5348 9:03\r\n To change this template use File | Settings | File Templates.\r\n--%>\r\n<%@ page contentType=\"text\/html;charset=UTF-8\" language=\"java\" %>\r\n<html>\r\n<head>\r\n <title>Title<\/title>\r\n<\/head>\r\n<body>\r\n <form action=\"http:\/\/localhost:8080\/JavaWeb_Code_IO\/uploadServlet\" method=\"post\" enctype=\"multipart\/form-data\">\r\n \u7528\u6237\u540d\uff1a<input type=\"text\" name=\"username\" \/> <br\/>\r\n \u5934\u50cf\uff1a<input type=\"file\" name=\"photo\" \/> <br\/>\r\n <input type=\"submit\" value=\"\u4e0a\u4f20\">\r\n <\/form>\r\n\r\n<\/body>\r\n<\/html>\r\n<\/code><\/pre>\n\n\n\n <servlet>\r\n <servlet-name>UploadServlet1<\/servlet-name>\r\n <servlet-class>top.qaqaq.P215.UploadServlet<\/servlet-class>\r\n <\/servlet>\r\n <servlet-mapping>\r\n <servlet-name>UploadServlet1<\/servlet-name>\r\n <url-pattern>\/uploadServlet1<\/url-pattern>\r\n <\/servlet-mapping><\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"\u6587\u4ef6\u4e0a\u4f20-\u6587\u4ef6\u4e0a\u4f20\u7684\u4ecb\u7ecd \u6587\u4ef6\u4e0a\u4f20-\u4e0a\u4f20\u7684http\u534f\u8bae\u5185\u5bb9\u4ecb\u7ecd \u6587\u4ef6\u4e0a\u4f20-\u4e0a\u4f20\u5408\u7528\u5230\u7684\u7c7b\u548c\u65b9\u6cd5\u7684\u4ecb\u7ecd\u3001\u6587\u4ef6\u4e0a\u4f20 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[59],"tags":[61],"class_list":["post-2301","post","type-post","status-publish","format-standard","hentry","category-javaweb-code","tag-javaweb"],"_links":{"self":[{"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts\/2301"}],"collection":[{"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2301"}],"version-history":[{"count":1,"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts\/2301\/revisions"}],"predecessor-version":[{"id":2303,"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts\/2301\/revisions\/2303"}],"wp:attachment":[{"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2301"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2301"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2301"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
![\"\"](\"https:\/\/qaqaq.top\/wp-content\/uploads\/2022\/12\/image-129-1024x451.png\")
<\/div><\/figure>\n\n\n\n