使用smartupload.jar实现文件上传
1.将jar包添加到项目中:smartupload.jar
2.准备上传的页面
<form action="toUpload" method="post" enctype="multipart/form-data" >
书名:<input type="text" name="bookName"/><br>
图片:<input type="file" name="自定义名称"/><br>
<input type="submit" value="提交"/>
</form>注:(1)form标签中要添加enctype属性
(2)提交方式必须是post
3.开始获取数据,保存文件
实例代码：
public void upload(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
try {
//上传文件
SmartUpload su=new SmartUpload();
//获得pageContext对象
JspFactory factory=JspFactory.getDefaultFactory();
PageContext pagecontext=
factory.
getPageContext(this, request,response,
null,false,1024,true);
su.initialize(pagecontext);
su.setCharset("utf-8");
//实现文件数据的上传
su.upload();
File file = su.getFiles().getFile(0);
//得到文件的基本信息
String filename=file.getFileName();
String type=file.getContentType();
System.out.println("type="+type);
String url="uploadfile/"+filename;
//将上传文件保存到指定目录
file.saveAs(url, SmartUpload.SAVE_VIRTUAL);
request.setAttribute("filename",filename);
String uname=su.getRequest().getParameter("uname");
System.out.println("uname="+uname);
request.getRequestDispatcher("success.jsp").forward(request, response);
} catch (SmartUploadException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}注：(1)此时如果表单中有其他数据时，不能通过request直接获取，需要通过SmartUpload对象获取
String name=su.getRequest().getParameter("bookName");
并且该代码要在SmartUpload操作完成后添加
(2)解决乱码:
new String(name.getBytes("GBK"),"utf-8")
注:斜杠方向:/
注意:
smartupload常用方法：
