Java-使用commons-fileupload做文件上传
方法一
1.在spring-mvc项目中引入commons-fileupload.jar包和commons-io.jar包还有jspSmartUpload.jar包，并在webmvc-config.xml配置文件中添加，如下代码(主要解决上传文件乱码问题)：
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:p="http://www.springframework.org/schema/p"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
">
…………
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver" p:defaultEncoding="utf-8"/>
…………
2.jsp页面form表单，设置如下：
<form name="form1" id="form1" enctype="multipart/form-data" method="post"
action="${ctx }/manage/manageInfo/phone/new.do">
</form>
3.编写上传文件代码：
/**
* 新增机型
* @author luowei
* @createTime 2012-1-12
* @param phone
* @param request
* @param result
* @return
*/
@RequestMapping(value = "/new")
public String newPhone(Phone phone,DefaultMultipartHttpServletRequest request,
HttpServletResponse response) {
MultipartFile file=request.getFile("phoneimage1");
String fileName = file.getOriginalFilename();
String path = request.getRealPath("images/phone");
File targetFile = new File(path, fileName);
if(!targetFile.exists()){
targetFile.mkdirs();
}
try {
file.transferTo(targetFile); //上传目标文件
} catch (Exception e) {
e.printStackTrace();
}
phone.setPhoneImage("/ttpod/images/phone/"+fileName);
phone.setPhonebrand(new Phonebrand(Integer.parseInt((String)request.getParameter("brandName"))));
phone.setPlatform(new Platform(Integer.parseInt((String)request.getParameter("platformName"))));
phone.setPhoneAddDate(DateUtil.datetimeToDate());
this.phoneManageService.save(phone);
//处理其它异外情况，。。。。。。。
String currentPage = (String) this.getSessionAttribute(request,"currentPage");
this.sendRedirect(response, currentPage);
return null;
}
方法二
直接解析HttpServletRequest,示例代码如下，(表单格式仍然为：enctype=”multipart/form-data”)：
/**
* 新增机型
*
* @param phone
* @param request
* @param result
* @return
* @author luowei
* @createTime 2012-1-12
*/
@RequestMapping(value = "/new")
public String newPhone(Phone phone, HttpServletRequest request, HttpServletResponse response) {
Phone phone = new Phone();
FileItemFactory factory = new DiskFileItemFactory();
ServletFileUpload upload = new ServletFileUpload(factory);
try {
request.setCharacterEncoding("utf-8");
List items = upload.parseRequest(request); //解析HttpServletRequest
Iterator iter = items.iterator();
while (iter.hasNext()) {
FileItem item = (FileItem) iter.next();
if (item.isFormField()) //如果是普通表单字段
{
String name = item.getFieldName(); //取得表单中字段的名
String value = item.getString("utf-8"); //取得表单中字段的值
if (name.equals("phoneName")) {
phone.setPhoneName(value);
}
if (name.equalsIgnoreCase("brandName")) {
phone.setPhonebrand(new Phonebrand(Integer.parseInt(value))); //将指定的手机品牌关联到机型
}
if (name.equals("platformName")) {
phone.setPlatform(new Platform(Integer.parseInt(value))); //将指定的手机平台关联到机型
}
if (name.equals("phoneHeadName")) {
phone.setPhoneName(value);
}
if (name.equals("phoneResolution")) {
phone.setPhoneName(value);
}
if (name.equals("phoneStatus")) {
phone.setPhoneStatus(Integer.parseInt(value));
}
if (name.equals("phoneDesc")) {
phone.setPhoneDesc(Integer.parseInt(value));
}
} else if (!item.isFormField()) //如果不是普通表单字段，即文件字段
{
String fieldName = item.getFieldName();
String fileName = item.getName();
String contentType = item.getContentType();
boolean isInMemory = item.isInMemory();
long sizeInBytes = item.getSize();
//System.out.println(fieldName+":"+fileName+":"+contentType+":"+sizeInBytes);
String path = request.getRealPath("images/phone");
File uploadedFile = new File(path, GetId.getNewId() + fileName); //创建一个上传文件对象
try {
item.write(uploadedFile); //将要上传的文件对象写到item
phone.setPhoneImage("/ttpod/images/phone/" + uploadedFile.getName());
} catch (Exception e) {
e.printStackTrace();
phone.setPhoneImage("");
}
System.out.println(path);
}
}
} catch (FileUploadException e) {
e.printStackTrace();
} catch (UnsupportedEncodingException e1) {
e1.printStackTrace();
}
phone.setPhoneAddDate(DateUtil.datetimeToDate()); //给phone对象的添加日期字段设置值
this.phoneManageService.save(phone); //执行保存
String currentPage = (String) this.getSessionAttribute(request, "currentPage");
this.sendRedirect(response, currentPage);
return null;
}