jsp前台代码：
<form id="formid" action="uploadpictrue.do"enctype="multipart/form-data" method="post">
<input id="file-0b" type="file" name="file"/>
<input type="submit" value="上传" name="submit">
</form
controller中的代码：
public class UploadpictureContrnller {
/**
* 字节流上传图片
* @param request
* @param response
*/
@RequestMapping(value="uploadpictrue.do",method=RequestMethod.POST)
@ResponseBody
public void uploadpictrue(HttpServletRequest request,HttpServletResponse response) {
MultipartHttpServletRequest multipart = (MultipartHttpServletRequest) request;
MultipartFile file = multipart.getFile("file");
// // 获得文件名：
// //获得保存路径
String path = request.getSession().getServletContext().getRealPath("down\\uploadpictrue");
SimpleDateFormat fmt = new SimpleDateFormat("yyyy-MM-dd");
Date day = new Date();
String folder = fmt.format(day);
String savepath = path+"\\"+folder;
File savefile = new File(savepath);
//判断文件夹是否存在不存在则创建
if(!savefile.exists()&& !savefile.isDirectory()){
savefile.mkdir();
}
String filename = file.getOriginalFilename();
//获得出流
FileOutputStream fos = null;
ServletInputStream inps = null;
//保存文件
try {
fos = new FileOutputStream(savepath+"\\"+filename);
inps = multipart.getInputStream();
byte[] b = new byte[1024];
int i =0;
inps.readLine(b, 0, b.length);
while((i=inps.readLine(b, 0, b.length))!=-1){
fos.write(b, 0, i);
fos.flush();
}
String[] suffixs = filename.split("[.]");
String suffix = suffixs[suffixs.length-1];
UUID uuid = UUID.randomUUID();
String uu = uuid.toString().replace("-","");
String newname = uu+"."+suffix;
if(fos!=null){
fos.close();
}
File f = new File(savepath+"\\"+filename);
if(f.exists()&&f.isFile()){
File f2 =new File(savepath+"\\"+newname);
boolean falg = f.renameTo(f2);
}
} catch (IOException e) {
e.printStackTrace();
}finally{
if(inps!=null){
try {
inps.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
/**
* 字符流上传图片
* @param request
* @param response
*/
@RequestMapping(value="uploadpictrue.do",method=RequestMethod.POST)
@ResponseBody
public void uploadpictrue2(HttpServletRequest request,HttpServletResponse response) {
MultipartHttpServletRequest multipart = (MultipartHttpServletRequest) request;
MultipartFile file = multipart.getFile("file");
// // 获得文件名：
// //获得保存路径
String path = request.getSession().getServletContext().getRealPath("down\\uploadpictrue");
SimpleDateFormat fmt = new SimpleDateFormat("yyyy-MM-dd");
Date day = new Date();
String folder = fmt.format(day);
String savepath = path+"\\"+folder;
File savefile = new File(savepath);
//判断文件夹是否存在不存在则创建
if(!savefile.exists()&& !savefile.isDirectory()){
savefile.mkdir();
}
String filename = file.getOriginalFilename();
//获得出流
BufferedReader bu =null;
OutputStream os = null;
PrintWriter pw;
//保存文件
try {
bu = new BufferedReader(new InputStreamReader(multipart.getInputStream()));
os = new FileOutputStream(savepath+"\\"+filename);
pw = new PrintWriter(os);
String str ="";
while((str=bu.readLine())!=null){
pw.write(str);
pw.flush();
}
String[] suffixs = filename.split("[.]");
String suffix = suffixs[suffixs.length-1];
UUID uuid = UUID.randomUUID();
String uu = uuid.toString().replace("-","");
String newname = uu+"."+suffix;
if(os!=null){
os.close();
os=null;
}if(pw!=null){
pw.close();
pw=null;
}
File f = new File(savepath+"\\"+filename);
if(f.exists()&&f.isFile()){
File f2 =new File(savepath+"\\"+newname);
boolean falg = f.renameTo(f2);
}
} catch (IOException e) {
e.printStackTrace();
}finally{
if(bu!=null){
try {
bu.close();
bu=null;
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
}
Spring-mvc.xml中配置：
<!--MultipartResolver 文件上传 -->
<!-- 文件上传通用的多部分解析器 -->
<bean id="multipartResolver"
class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<property name="defaultEncoding" value="utf-8"></property>
<property name="maxUploadSize" value="10485760000"></property>
<property name="maxInMemorySize" value="40960"></property>
</bean>