java中上传图片

1. ActionForm中添加属性，FormFile类型对象。
private FormFile upLoadFile;
public FormFile getUpLoadFile() {
return upLoadFile;
}
public void setUpLoadFile(FormFile upLoadFile) {
this.upLoadFile = upLoadFile;
}
2. Action 中增加修改方法。
public ActionForward save(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws Exception {
PayDirMenuForm myForm = (PayDirMenuForm) form;
PayDirMenu myObj = new PayDirMenu();
BeanUtils.copyProperties(myObj, myForm);
PayDirMenuManager mgr = (PayDirMenuManager)
getBean("PayDirMenuManager");
// 获得文件
FormFile file = myForm.getUpLoadFile();//form中增加的属性
// 获得Tomcate的路径
String objpath = request.getRealPath("plan");
// 获得上传的文件的名字
String fileName = file.getFileName();//获取上传图片的文件名
// 截取字符串，获得后缀名 
    StringsuffixFileName =
fileName.substring(fileName.lastIndexOf("."));
//判断上传文件的类型
if(!".txt".equals(suffixFileName)&&!".doc".equals(suffixFileName)&&!".xls".equals(suffixFileName)&&!".jpg".equals(suffixFileName)&&!".gif".equals(suffixFileName)&&!".ppt".equals(suffixFileName))
{
request.getSession().setAttribute("msg1", "<font
color='red'>上传的文件格式不正确！</font>");
return null;
}
// 获得内容
byte[] fileData = file.getFileData();
if (myObj.getMenuOid() != null && myObj.getMenuOid().intValue() ==
0){  //增加
//写入到流中
FileOutputStream out = new FileOutputStream(new File(objpath + "\\"
+ fileName));
String filePath = objpath + "\\"+ fileName;
out.write(fileData);
out.close();
out.flush();
//写入数据库
myObj.setMenuImage(filePath);
mgr.saveObj(myObj);
}
else