{"id":1819,"date":"2016-12-20T11:43:03","date_gmt":"2016-12-20T03:43:03","guid":{"rendered":"https:\/\/ai.zhousir.top\/?p=1819"},"modified":"2016-12-20T11:46:38","modified_gmt":"2016-12-20T03:46:38","slug":"%e8%a1%a8%e5%8d%95%e6%8f%90%e4%ba%a4%e4%b8%8e%e5%a4%b4%e5%83%8f%e4%b8%8a%e4%bc%a0","status":"publish","type":"post","link":"https:\/\/ai.zhousir.top\/?p=1819","title":{"rendered":"\u8868\u5355\u63d0\u4ea4\u4e0e\u5934\u50cf\u4e0a\u4f20"},"content":{"rendered":"

Web\u540e\u53f0\u7ba1\u7406\u7cfb\u7edf\u4e2d\u6570\u636e\u7684\u6dfb\u52a0\u3001\u5220\u9664\u3001\u4fee\u6539\u64cd\u4f5c\u662f\u5fc5\u4e0d\u53ef\u5c11\u7684\uff0c\u4e00\u822c\u662f\u9488\u5bf9\u6570\u636e\u5e93\u8868\u8bb0\u5f55\u7684\u589e\u5220\u6539\uff0c\u5982\u679c\u64cd\u4f5c\u6570\u636e\u5305\u542b\u5934\u50cf\u56fe\u7247\uff0c\u5c31\u9700\u8981\u6d89\u53ca\u6587\u4ef6\u4e0a\u4f20\u64cd\u4f5c\u3002<\/p>\n

\u4e00\u3001\u6587\u4ef6\u4e0a\u4f20\u5b9e\u73b0\u65b9\u5f0f<\/h2>\n

1.\u81ea\u5df1\u89e3\u6790\u5b9e\u73b0<\/h3>\n

\u7528\u5230\u77e5\u8bc6:
\n1.http\u534f\u8bae
\n\u5f53\u5411\u670d\u52a1\u5668\u53d1\u9001\u4e00\u6b21\u8bf7\u6c42\u65f6,\u5176\u5b9e\u8d28\u4e3a\u5411\u670d\u52a1\u5668\u53d1\u9001\u4e00\u4e2a\u6587\u672c\u6570\u636e\uff0c\u8fd9\u4e2a\u6587\u672c\u6570\u636e\u662f\u6309http\u8bf7\u6c42\u683c\u5f0f\u8fdb\u884c\u7ec4\u88c5\uff0c\u683c\u5f0f\u5982\u4e0b\u56fe:<\/p>\n

\"requesthttp\"<\/a><\/p>\n

2. io\u6d41
\n\u6309\u7167http\u534f\u8bae\u683c\u5f0f\u8bfb\u53d6\u6587\u672c\u6570\u636e,\u4e0a\u4f20\u6709\u5934\u50cf\u56fe\u7247\uff0c\u8fdb\u884c\u5199\u6587\u4ef6\u64cd\u4f5c.<\/p>\n

2.smartupload\u4e0a\u4f20\u5e93\u5b9e\u73b0<\/h3>\n

[java] SmartUpload su = new SmartUpload();
\n su.initialize(getServletConfig(), req, resp);\/\/ \u521d\u59cb\u5316\u5bf9\u8c61
\n su.upload();\/\/ \u4e0a\u4f20\u6587\u4ef6
\n su.save(file) \/\/\u4fdd\u5b58\u6587\u4ef6[\/java]<\/p>\n

3.commons-fileupload\u4e0a\u4f20\u5e93\u5b9e\u73b0<\/h3>\n

\u9996\u5148\uff1a\u4e0b\u8f7dcommons-fileupload-1.3.2.jar\u548ccommons-io-2.4.jar
\n\u5730\u5740:http:\/\/commons.apache.org\/proper\/commons-fileupload\/download_fileupload.cgi<\/p>\n

commons-fileupload\u6838\u5fc3\u7c7b\u4ecb\u7ecd:<\/strong><\/p>\n

1.\u521b\u5efa\u4e00\u4e2a\u6587\u4ef6\u9879\u76ee\u5de5\u5382\u7c7bDiskFileItemFactory\u3002<\/p>\n

[java]DiskFileItemFactory\u6709\u4fe9\u4e2a\u6784\u9020\u65b9\u6cd5\uff1a<\/p>\n

DiskFileItemFactory() \u5176\u4e2dsizeThreshold\u662f\u9ed8\u8ba4\u503c10kB, \u6587\u4ef6\u5927\u5c0f\u4e0d\u8d85\u8fc7\u8fd9\u4e2a\u503c\u5c06\u5185\u5bb9\u4fdd\u5b58\u5728\u5185\u5b58\uff0c\u8d85\u8fc7\u8fd9\u4e2a\u503c\u4f1a\u628a\u6587\u4ef6\u4fdd\u5b58\u5230\u4e34\u65f6\u76ee\u5f55\u4e0b\uff0c\u53ef\u7528System.getProperty("java.io.tmpdir")\u83b7\u53d6\uff1b
\n DiskFileItemFactory(int sizeThreshold, File repository) \u53ef\u4ee5\u6307\u5b9asizeThreshold, \u548c\u6587\u4ef6\u4fdd\u5b58\u5230\u78c1\u76d8\u7684\u8def\u5f84\u3002[\/java]<\/p>\n

2.\u521b\u5efa\u4e00\u4e2a\u6587\u4ef6\u5904\u7406\u7c7bServletFileUpload\u3002<\/p>\n

ServletFileUpload\u89e3\u6790\u4e0a\u4f20\u8bf7\u6c42request\u7684\u4fe1\u606f\uff0c\u5c01\u88c5\u5230FileItem\u7c7b\u4e2d\uff0c\u6211\u4eec\u901a\u8fc7FileItem\u53ef\u4ee5\u83b7\u53d6\u6587\u4ef6\u7684\u540d\u79f0\u3001\u5927\u5c0f\u3001\u6587\u4ef6\u6d41\u7b49\u4fe1\u606f\u3002<\/p>\n

[java] ServletFileUpload sfu = new ServletFileUpload(factory);
\n \u3000\u3000ServletFileUpload\u53ef\u4ee5\u8bbe\u7f6e\uff1a
\n \u3000\u3000\u3000\u3000headerEncoding \u8bfb\u53d6\u8bf7\u6c42\u5934\u4fe1\u606f\u65f6\u4f7f\u7528\u7684\u7f16\u7801
\n \u3000\u3000\u3000\u3000sizeMax \u5355\u6b21\u8bf7\u6c42\u6240\u80fd\u4e0a\u4f20\u7684\u6587\u4ef6\u603b\u5927\u5c0f\u7684\u6700\u5927size\uff0c\u9ed8\u8ba4\u662f-1\uff0c\u4e0d\u9650\u5236\u5927\u5c0f
\n \u3000\u3000\u3000\u3000fileSizeMax \u5355\u6b21\u8bf7\u6c42\u6240\u80fd\u4e0a\u4f20\u7684\u5355\u4e2a\u6587\u4ef6\u6700\u5927size\uff0c\u9ed8\u8ba4\u662f-1\uff0c\u4e0d\u9650\u5236\u5927\u5c0f
\n6List<FileItem> items = sfu.parseRequest(req);[\/java]<\/p>\n

\u4e8c\u3001\u5b66\u751f\u5934\u50cf\u4e0a\u4f20\u5b9e\u4f8b<\/h2>\n

1.\u6dfb\u52a0\u5b66\u751f<\/h3>\n

addstudent.jsp<\/p>\n

[java] <div class="login-form"><\/p>\n

\t\t<form action=".\/addStudentservlet.do" method="post" enctype="multipart\/form-data">
\n\t\t\t<input type="text" name="userName" placeholder="\u8bf7\u8f93\u5165\u5b66\u751f\u59d3\u540d"><\/p>\n

\t\t\t<input type="text" name="number" placeholder="\u8bf7\u8f93\u5165\u5b66\u751f\u5b66\u53f7"><br><br><\/p>\n

\u5934\u50cf :<input type="file" name="headerImg"\/><\/p>\n

\t\t\t<input type="submit" value="\u6dfb\u52a0"><\/p>\n

\t\t<\/form><\/p>\n

\t<\/div>[\/java]<\/p>\n

addStudentservlet.do<\/p>\n

[java] protected void doPost(HttpServletRequest request, HttpServletResponse response)
\n\t\t\tthrows ServletException, IOException {<\/p>\n

\t\t\/\/ \u5b9a\u4e49\u4e00\u4e2aHashMap\uff0c\u5b58\u653e\u8bf7\u6c42\u53c2\u6570
\n\t\tHashMap<String, String> parameterMap = new HashMap<String, String>();
\n\t\t\/\/ —–\u4e0a\u4f20\u5934\u50cf\u5e76\u4fdd\u5b58\u53c2\u6570\u5230hashMap—–
\n\t\tuploadHeader(request, parameterMap);<\/p>\n

\t\taddStudent(parameterMap,request,response);
\n\t}
\n[\/java]
\n[java]
\n\/**
\n\t * \u4e0a\u4f20\u4fee\u6539\u540e\u5934\u50cf\u5e76\u4fdd\u5b58\u8868\u5355\u6570\u636e\u5230hashmap
\n\t *
\n\t * @param request
\n\t * @throws UnsupportedEncodingException
\n\t *\/
\n\tpublic void uploadHeader(HttpServletRequest request, HashMap<String, String> parameterMap)
\n\t\t\tthrows UnsupportedEncodingException {
\n\t\tServletFileUpload servletFileUpload = new ServletFileUpload(new DiskFileItemFactory());
\n\t\tservletFileUpload.setHeaderEncoding("UTF-8");
\n\t\tList<FileItem> fileItemLists = null;
\n\t\ttry {
\n\t\t\tfileItemLists = servletFileUpload.parseRequest(request);
\n\t\t} catch (FileUploadException e) {
\n\t\t\te.printStackTrace();
\n\t\t}
\n\t\tIterator<FileItem> iterator = fileItemLists.iterator();
\n\t\twhile (iterator.hasNext()) {
\n\t\t\tFileItem fileItem = iterator.next();
\n\t\t\t\/\/ \u5982\u679c\u662f\u8868\u5355\u6570
\n\t\t\tif (fileItem.isFormField()) {
\n\t\t\t\tString filedName = fileItem.getFieldName();
\n\t\t\t\tString fileValue = fileItem.getString("UTF-8");
\n\t\t\t\tparameterMap.put(filedName, fileValue);
\n\t\t\t} else {\/\/ \u6587\u4ef6\u64cd\u4f5c
\n\t\t\t\tString rootDir = getServletContext().getRealPath("\/");
\n\t\t\t\tString fileDir = "upload\/" + fileItem.getName();
\n\t\t\t\tFile file = new File(rootDir + fileDir);
\n\t\t\t\tFileUtil.createFile(file);
\n\t\t\t\tSystem.out.println(file);<\/p>\n

\t\t\t\ttry {
\n\t\t\t\t\tfileItem.write(file);
\n\t\t\t\t} catch (Exception e) {
\n\t\t\t\t\te.printStackTrace();
\n\t\t\t\t}<\/p>\n

\t\t\t\tparameterMap.put(fileItem.getFieldName(), fileDir);
\n\t\t\t}
\n\t\t}
\n\t}[\/java]<\/p>\n

[java]private void addStudent(HashMap<String,String> parameters,HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException{
\n\t\tString userName = parameters.get("userName");
\n\t\tString number = parameters.get("number");
\n\t\tint numbers = Integer.parseInt(number);
\n\t\tint ages = 23;
\n\t\tString fileUrl = parameters.get("header_img");
\n\t\tSystem.out.println("userName:"+userName+", number :"+number+" ,fileUrl :"+fileUrl);
\n \/\/\u6dfb\u52a0\u6570\u636e\u5e93
\n}[\/java]<\/p>\n

2.\u4fee\u6539\u5b66\u751f\u64cd\u4f5c\uff1a<\/h3>\n

[java]
\n\tprotected void doPost(HttpServletRequest request, HttpServletResponse response)
\n\t\t\tthrows ServletException, IOException {
\n\t\tHashMap<String, String> parameterMap = new HashMap<>();
\n\t\t\/\/ —–\u4fdd\u5b58\u53c2\u6570\u5230hashMap\u5e76\u4e0a\u4f20\u65b0\u5934\u50cf—–
\n\t\tuploadHeader(request, parameterMap);
\n\t\t\/\/ —–\u5220\u9664\u539f\u5934\u50cf—–
\n\t\tdeleteHeaderImg(parameterMap);
\n\t\t\/\/ —–\u4fee\u6539\u6570\u636e\u5e93\u5b57\u6bb5—-
\n\t\tupdateStudent(parameterMap);<\/p>\n

\t\tresponse.sendRedirect(request.getContextPath() + "\/student_list.jsp");
\n\t}
\n[\/java]<\/p>\n","protected":false},"excerpt":{"rendered":"

Web\u540e\u53f0\u7ba1\u7406\u7cfb\u7edf\u4e2d\u6570\u636e\u7684\u6dfb\u52a0\u3001\u5220\u9664\u3001\u4fee\u6539\u64cd\u4f5c\u662f\u5fc5\u4e0d\u53ef\u5c11\u7684\uff0c\u4e00\u822c\u662f\u9488\u5bf9\u6570\u636e\u5e93\u8868\u8bb0\u5f55\u7684\u589e\u5220\u6539\uff0c\u5982\u679c\u64cd\u4f5c\u6570\u636e\u5305\u542b\u5934 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[60],"tags":[],"_links":{"self":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/1819"}],"collection":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1819"}],"version-history":[{"count":7,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/1819\/revisions"}],"predecessor-version":[{"id":1827,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/1819\/revisions\/1827"}],"wp:attachment":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1819"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1819"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1819"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}