\u5728GWA2 Java\u4e2d\uff0c\u4e3a\u4e0a\u4f20\u6587\u4ef6\u5f53HTML\u7684\u8868\u5355\u7c7b\u578b\u88ab\u8bbe\u7f6e\u6210 enctype \u5c6c\u6027\u70ba\u00a0multipart\/form-data \uff0c request.getParameter \u65b9\u6cd5\u5931\u6548\uff0c\u540c\u6837\u5730\u7c7b\u4f3c\u65b9\u6cd5 request.getParameterValues \u4e5f\u5931\u6548\u4e86\uff0c\u5982\u6b64\u4ee5\u6765\uff0c\u83b7\u53d6\u7c7b\u4f3c \u591a\u4e2a checkbox \u8fd9\u6837\u7684HTML form\u7684\u8f93\u5165\uff0c\u5c31\u6210\u4e86\u95ee\u9898\u3002\u4e3a\u6b64\uff0c\u6211\u4eec\u9700\u8981\u518d\u6269\u5c55\u4e00\u4e0b\u4e4b\u524d\u4f7f\u7528 FormItems \u6765\u63a5\u7ba1 request\u7684\u76f8\u5173\u5c5e\u6027\u7684\u65b9\u6cd5\u3002<\/p>\n
ServletFileUpload sfileupld = new ServletFileUpload((new DiskFileItemFactory()));
formItems = sfileupld.parseRequest(request); \/\/ can only be parsed once!
if (formItems != null && formItems.size() > 0){
String iname, ivalue; byte[] bytes; Object lastVal;
for (FileItem item : formItems){
\/\/ processes only fields that are common form fields
if (item.isFormField()){
bytes = item.getFieldName().getBytes(“ISO-8859-1”); \/\/ why 8859?
iname = new String(bytes, “UTF-8”);
bytes = item.getString().getBytes(“ISO-8859-1”);
ivalue = new String(bytes, “UTF-8”);
lastVal = request.getAttribute(iname);
if(lastVal != null){
\/\/ checkbox or multiple select
if(lastVal instanceof String[]){
String[] tmpArr = (String[])lastVal;
String[] tmpArr2 = new String[tmpArr.length+1];
for(int si=0; si<tmpArr.length; si++){
tmpArr2[si] = tmpArr[si];
}
tmpArr2[tmpArr.length] = ivalue;
request.setAttribute(iname, tmpArr2);
}
else{
String[] tmpArr = new String[2];
tmpArr[0] = String.valueOf(lastVal); tmpArr[1] = ivalue;
request.setAttribute(iname, tmpArr);
}
}
else{
request.setAttribute(iname, ivalue);
}
\/\/debug(“ctrl\/user: iname:”+iname+”, ivalue:”+ivalue+” lastVal:”+lastVal);
}
else{
debug(“ctrl\/user: not form field: iname:”+item.getFieldName()+”, ivalue:”+item.getString().length());
}
}
}\u00a0<\/p>\n
\u4f7f\u7528 lastVal\uff0c \u6765\u68c0\u6d4b\u662f\u5426\u540c\u4e00\u4e2akey\u7684\u952e\u503c\u88ab\u8d4b\u4e88\u591a\u4e2a\u8d4b\u503c\uff0c\u5982\u679c\u65f6\uff0c\u5c31\u542f\u7528\u4e00\u4e2a\u6570\u5217\u6765\u5b58\u50a8\u3002\u76f8\u5173\u4ee3\u7801\u5728 github\/wadelau\/GWA2\u00a0 \uff08\u00a0https:\/\/github.com\/wadelau\/GWA2 \uff09\u4e0a\u53ef\u4ee5\u83b7\u53d6\u3002
\u8be5\u5e94\u7528\u7684\u573a\u666f\u662f\u4e00\u4e2aForm\u4e2d\uff0c\u65e2\u6709\u591a\u9009\u6846\uff0c\u4e5f\u6709\u6587\u4ef6\u4e0a\u4f20\u3002<\/p>\n
\u5bf9\u5e94\u5730\uff0c\u6211\u4eec\u4e5f\u5728\u76f8\u5173GWA2 \u7684\u57fa\u7840\u8bbe\u65bd\u7ec4\u4ef6 comm\/Wht \u4e2d\u589e\u52a0\u4e86\u9488\u5bf9Form \u7684\u6570\u5217\u578b\u6570\u636e\u7684\u63a5\u6536\u5904\u7406\uff0c\u65b9\u6cd5\u540d\u4e3a
Wht.getArray(request, fieldName)
\u4ee5\u6b64\u6765\u63a5\u6536\u548c\u5904\u7406\u7c7b\u4f3c multi select\u548ccheck box\u7c7b\u578b\u7684\u8f93\u5165\u3002<\/p>\n
9. \u591a\u6587\u4ef6\u540c\u65f6\u4e0a\u4f20\u7684\u4f18\u5316\u5904\u7406<\/strong><\/p>\n \u9488\u5bf9\u670d\u52a1\u5668\u7aef\u63a5\u6536\u5904\u7406\u6587\u4ef6\u4e0a\u4f20\u7684\u76f8\u5173\u7ec4\u4ef6\uff0c\u5df2\u7ecf\u975e\u5e38\u6210\u719f\uff0c\u62ff\u6765\u7528\u5373\u53ef\u3002\u5982\u524d\u6240\u8ff0\uff0c\u6211\u4eec\u5728GWA2 Java\u4e2d\u5904\u7406\u6587\u4ef6\u7684\u6a21\u5757\u4e3b\u8981\u6765\u81ea Apache commons-fileupload-1.4.jar , \u4e00\u5e76\u7684\u4e5f\u8981\u5f15\u5165 Apache\u00a0commons-io-2.7.jar\u3002<\/p>\n \u5728\u4e00\u4e9b\u7ec6\u8282\u4e0a\uff0c\u8fd8\u662f\u6709\u53ef\u6df1\u7a76\u7684\u5730\u65b9\u3002\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u6211\u4eec\u901a\u8fc7 inc\/FileSystem \u4e2d\u7684\u4e00\u4e2a upload \u65b9\u6cd5\u6765\u5904\u7406\u8fd9\u4e9b\u7ec6\u8282\u3002\u9488\u5bf9 upload\u8fd9\u4e2a\u65b9\u6cd5\uff0c\u9884\u671f\u7684\u6548\u679c\u662f\u7ed9\u5b9a\u4e00\u4e2a\u4e0a\u4f20\u7684 form\u5b57\u6bb5\u540d\u79f0\uff0c\u7136\u540e\u8fd4\u56de\u4e00\u4e2a\u4fdd\u5b58\u540e\u7684\u6587\u4ef6\u8def\u5f84\uff0c\u5f62\u5f0f\u5982\uff1a \u5982\u679c\u662f\u591a\u4e2a\u6587\u4ef6\u5462\uff1f\u4e4b\u524d\u7684\u65b9\u6cd5\u662f upload \u8fd4\u56de\u4e00\u4e2a\u6570\u7ec4\uff0c\u5305\u62ec\u591a\u4e2a\u5730\u5740\uff0c\u76f8\u5f53\u4e8e\uff1a \u6b64\u65f6\u5904\u7406\u4e24\u4e2a\u4ee5\u4e0a\u7684\u6587\u4ef6\u4e0a\u4f20\u65f6\uff0c\u5b83\u662f\u80fd\u591f\u5b8c\u6210\u9884\u671f\u76ee\u6807\u7684\uff0c\u53ef\u662f\uff0c\u5982\u679c\u8981\u66f4\u65b0\u5176\u4e2d\u4e00\u4e2a\u6587\u4ef6\u65f6\uff0c\u5c31\u4f1a\u51fa\u9519\u3002\u7531\u4e8eForm\u5b57\u6bb5\u540d\u79f0\u5bf9\u5e94\u7684\u78c1\u76d8\u6587\u4ef6\u8def\u5f84\uff0c\u53ea\u6709\u987a\u5e8f\uff0c\u800c\u6ca1\u6709\u6700\u7ec8\u9884\u671f\u7684key\/value \u5f62\u5f0f\uff0c\u5f53\u4fee\u6539\u6216\u66f4\u65b0\u5176\u4e2d\u4e00\u4e2a\u6587\u4ef6\u65f6\uff0c\u603b\u662f\u8fd4\u56de\u5f62\u5f0f\u4e3a\uff1a \u8fd9\u4e0e\u53ea\u4e0a\u4f20\u4e00\u4e2a\u6587\u4ef6\u7684\u60c5\u5f62\u662f\u6ca1\u6cd5\u533a\u5206\u7684\u3002\u9700\u8981\u6539\u6b63\u3001\u4f18\u5316\u3002\u9884\u671f\u7684\u662f\u8fd4\u56de\u4e00\u4e2akey\/value\u5f62\u5f0f\u7684 formField\/diskFilePath \u3002<\/p>\n \/\/ parses the request’s content to extract file data \u65b0\u589e\u4e86 fieldName \u5b57\u6bb5\uff0c\u5728\u8fd4\u56de\u65f6\uff0c\u5c06 Form fieldName \u4e0e diskFilePath \u4ee5 key\/value \u5f62\u5f0f\u4e25\u683c\u5bf9\u5e94\u8d77\u6765\uff0c\u7531\u8fd4\u56de String \u540e\u8005 String\u6570\u7ec4\uff0c\u6539\u4e3a\u8fd4\u56de HashMap\u3002\u5982\u6b64\u4ee5\u6765\uff0c\u5219\u53ef\u4ee5\u89e3\u51b3\u540c\u65f6\u4e0a\u4f20\u591a\u4e2a\u6587\u4ef6\uff0c\u800c\u4e0d\u4f9d\u8d56\u987a\u5e8f\u6765\u5bf9\u5e94\u6240\u4e0a\u4f20\u7684\u6587\u4ef6\uff0c\u540c\u65f6\uff0c\u5f53\u4fee\u6539\u65f6\uff0c\u4e5f\u53ef\u4ee5\u907f\u514d\u6240\u8df3\u8fc7\u7684\u6587\u4ef6\u4ea7\u751f\u7684\u987a\u5e8f\u5f02\u5e38\u3002\u5b8c\u6574\u529f\u80fd\u7684\u76f8\u5173\u4ee3\u7801\u5728 github\/wadelau\/GWA2\u00a0 \uff08\u00a0https:\/\/github.com\/wadelau\/GWA2 \uff09\u4e0a\u53ef\u4ee5\u83b7\u53d6\u3002<\/p>\n \u7531\u4e8e\u65b9\u6cd5\u8fd4\u56de\u503c\u7684\u4fee\u6539\uff0c\u4e0d\u517c\u5bb9\u6b64\u524d\u7248\u672c\uff0c\u5efa\u8bae\u8001\u7248\u672c\u7684\u7528\u6237\u5347\u7ea7\u65f6\uff0c\u4f7f\u7528\u65b9\u6cd5\u91cd\u8f7d\u540e\u8005\u547d\u540d\u65b0\u65b9\u6cd5\u7684\u5f62\u5f0f\u5f15\u5165\u65b0\u529f\u80fd\u3002\u6bd4\u5982\uff0c\u5728\u6700\u8fd1\u7684\u9879\u76ee Boss\u9009\u5740 \uff08 bossxuanzhi.com ) \u4e2d\uff0c\u6211\u4eec\u5c31\u9762\u4e34\u8981\u4f7f\u7528\u547d\u540d\u65b0\u65b9\u6cd5\u6765\u517c\u5bb9\u524d\u671f\u4f7f\u7528\u65e7\u65b9\u6cd5\u7684 upload \u548c\u540e\u671f\u91c7\u7528\u65b0\u65b9\u6cd5\u7684 uploadMultiple \u3002 <\/p>\n -GWA2 \u5409\u5a03\u5154<\/a>\u00a0\u662f\u201d\u901a\u7528\u7f51\u7edc\u5e94\u7528\u67b6\u6784( General Web Application Architeture,\u00a0https:\/\/ufqi.com\/dev\/gwa2\/ )\u201d\uff0c\u57fa\u4e8e -GWA2 \u53ef\u4ee5\u8f7b\u4fbf\u6784\u5efa\u5404\u79cd\u7f51\u7edc\u5e94\u7528\u7a0b\u5e8f, -GWA2 is a \u201cGeneral Web Application Architecture\u201d and based on -GWA2 developers can easily build a variety of network applications, -GWA2 is E.A.S.Y\u00a0<\/strong> <\/p>\n <\/p>\n Boss\u9009\u5740<\/a>\uff08 bossxuanzhi.com \uff09\u662f\u6c47\u6210\u4ea7\u4e1a\u670d\u52a1\uff08\u6c47\u6210\u4ea7\u670d\uff09\u63d0\u4f9b\u7684\u5728\u7ebf\u670d\u52a1\uff0c\u662f\u670d\u52a1\u653f\u5e9c\u6295\u878d\u8d44\u3001\u62db\u5546\u3001\u8fd0\u8425\u7684\u5e73\u53f0\u578b\u516c\u53f8. \u6c47\u6210\u4ea7\u670d\u516c\u53f8\u5b9a\u4f4d\uff1a\u4e00\u3001\u4e13\u4e1a\u7684\u653f\u5e9c\u62db\u5546\u4ee3\u7406\u670d\u52a1\u673a\u6784\uff0c\u4e8c\u3001\u4f01\u4e1a\u9009\u5740\u670d\u52a1\u673a\u6784\uff0c\u4e09\u3001\u4f01\u4e1a\u54a8\u8be2\u7ba1\u7406\u670d\u52a1\u5e73\u53f0\u3002<\/p>\n <\/p>\n ( https:\/\/ufqi.com\/blog\/gwa2-java-file-upload-issues-2nd\/ )<\/p>\n <\/p>\n","protected":false},"excerpt":{"rendered":" \u53bb\u5e74\uff082020\u5e74\uff09\u79cb\u5929\u5199\u4e86\u4e0a\u4e00\u7bc7\uff1aGWA2\u5409\u5a03\u5154\ud83d\udc07Java\u4e2d\u7684\u6587\u4ef6\u4e0a\u50b3\u8868\u55ae\u8655\u7406\u82e5 … \u7ee7\u7eed\u9605\u8bfb
formFieldA -> filePathInDisk<\/p>\n
[formFieldA, formFieldB] -> [filePathInDisk, filePathInDisk]<\/p>\n
formFieldA -> filePathInDisk<\/p>\n
@SuppressWarnings(“unchecked”)
List<FileItem> formItems = preFormItems;
if(formItems == null || formItems.size() ==0){
formItems = upload.parseRequest(request);
}
if (formItems != null && formItems.size() > 0){
\/\/ iterates over form’s fields
String fieldName, itemName, fileName, suffix, filePath;
File storeFile = null;
String showPath = UPLOAD_DIRECTORY + File.separator + relativePath;
if(!relativePath.endsWith(File.separator)){ showPath += File.separator; }
for (FileItem item : formItems){
\/\/ processes only fields that are not common form fields
if (!item.isFormField()){
fileName = “”;
fieldName = item.getFieldName(); itemName = item.getName();
if(itemName != null && !itemName.equals(“”)){
suffix = “”;
if(itemName.lastIndexOf(“.”)>0){
suffix = itemName.substring(itemName.lastIndexOf(“.”), itemName.length());
}
fileName = UUID.randomUUID().toString().replaceAll(“-“,””) + suffix;
filePath = uploadPath + File.separator + fileName;
debug(Log_Tag+” upload: filePath:”+filePath+” itemName:”+itemName);
\/\/ saves the file on disk
storeFile = new File(filePath);
item.write(storeFile);
fileName = showPath + fileName;
}
else{
fileName = “”;
debug(Log_Tag+”upload: skip empty itemName.”+itemName);
}
hmResult.put(fieldName, fileName);
}
else{
\/\/debug(Log_Tag+” upload: form field item:”+item);
}
}
}
else{
debug(Log_Tag+” upload: formItems:”+formItems);
}<\/p>\n
\u5982\u679c\u662f\u5728\u65b0\u9879\u76ee\u4e2d\uff0c\u5efa\u8bae\u76f4\u63a5\u4f7f\u7528\u5373\u53ef\uff0c\u6ca1\u6709\u5411\u524d\u517c\u5bb9\u7684\u9700\u6c42\u3002<\/p>\n
\n![](\"https:\/\/ufqi.com\/blog\/wp-content\/uploads\/2020\/08\/gwa2-logo-202005.v3.png\"){kind=logo}
<\/p>\n
\u5305\u62ec\u590d\u6742\u7684\u5728\u7ebf\u8d2d\u7269\u5546\u57ce\u3001\u5728\u7ebf\u533b\u7597\u3001\u5728\u7ebf\u6559\u80b2\u3001 \u65c5\u6e38\u4ea4\u6613\u5e73\u53f0\u3001\u793e\u7fa4\u6216\u8005\u793e\u4ea4\u7f51\u7ad9\u548c\u65b0\u95fb\u8d44\u8baf\u7f51\u7ad9\u7b49\uff0c
\u4e5f\u5305\u62ec\u5404\u79cd\u4f01\u4e8b\u4e1a\u5355\u4f4d\u7f51\u4e0a\u95e8\u6237\uff0c\u5728\u7ebf\u4ea4\u4e92\u53ca\u670d\u52a1\u4f5c\u4e1a\u7cfb\u7edf\u7b49.
\u8fd8\u53ef\u4ee5\u5305\u62ec\u4e3aNativeApp\u505a\u670d\u52a1\u5668\u7aef\u652f\u6301, \u751a\u81f3\u662fWebApp\u7684\u5168\u90e8.
-GWA2 \u662f\u4e3a\u6570\u4e0d\u591a\u7684\u652f\u6301\u8de8\u5f00\u53d1\u8bed\u8a00\u7684\u5e94\u7528\u6846\u67b6\uff0c\u76ee\u524d\u652f\u6301 -Java, -PHP, -Perl, -Aspx and -Python .<\/p>\n
including complex online shopping malls, online medical services, online teaching, travel trading platforms, community or social networking sites and news information sites, etc.
Also the applications include various online portals of enterprises and institutions, online interaction and service operations systems.
Moreover it contains server-side support for Native App, or even all of the WebApp.
-GWA2 is one of the web frameworks which provide cross-language support for -Java, -PHP, -Perl, -Aspx and -Python at present.<\/p>\n
Easy Along, Swift Yield
<\/b>\u8f7b\u677e\u542f\u52a8, \u5feb\u901f\u4ea7\u51fa.<\/p>\n
\n![](\"https:\/\/ufqi.com\/blog\/wp-content\/uploads\/2021\/10\/logo.png\"){kind=logo}
<\/p>\n