uploadimage.jsp

上学期软件工程作业,是一个自行车销售管理网站系统.

<%@ page contentType="text/html;charset=gb2312" language="java" 
import="com.jspsmart.upload.*,java.util.*"%>
<%
SmartUpload mySmartUpload =new SmartUpload();
long file_size_max=4000000;
String ext="";
String url="images\\"; //应保证在根目录中有此目录的存在
//初始化
mySmartUpload.initialize(pageContext);
//只允许上载此类文件
try {
mySmartUpload.setAllowedFilesList("jpg,gif");
//上载文件 
mySmartUpload.upload();
} catch (Exception e){
%>
<SCRIPT language=javascript>
alert("只允许上传.jpg和.gif类型图片文件");
window.location='upload.htm';
</script>
<%
}
try{ 
com.jspsmart.upload.File myFile = mySmartUpload.getFiles().getFile(0);
if (myFile.isMissing()){%>
<SCRIPT language=javascript>
alert("请先选择要上传的文件");
window.location='upload.htm';
</script>
<%}
else{
//String myFileName=myFile.getFileName(); //取得上载的文件的文件名
ext= myFile.getFileExt(); //取得后缀名
int file_size=myFile.getSize(); //取得文件的大小 
String saveurl="";
if(file_size<file_size_max){
//更改文件名，取得当前上传时间的毫秒数值
Calendar calendar = Calendar.getInstance();
String filename = String.valueOf(calendar.getTimeInMillis()); 
saveurl=application.getRealPath("/")+url;
saveurl+=filename+"."+ext; //保存路径
System.out.println(saveurl);
myFile.saveAs(saveurl,SmartUpload.SAVE_PHYSICAL);
out.print(saveurl);

String ret = "";
ret += "<img src=\"../images/" + filename + "." + ext + "\"/>');" ;

out.print( ret );

}
}
}catch (Exception e){ 
out.print(e.toString()); 
}
%>