参考文章：
http://www.cnblogs.com/interdrp/p/6734033.html
方法一：
1）没有配置org.springframework.web.multipart.commons.CommonsMultipartResolver
2）MultipartFile转化为File的方式为：
MultipartFile file = multiRequest.getFile("imgFile");
CommonsMultipartFile cf= (CommonsMultipartFile) file;
DiskFileItem fi = (DiskFileItem ) cf.getFileItem();
File fs = fi.getStoreLocation();
代码例子1：保存用户信息，用户有照片
//增加用户
@RequestMapping("/addUser")
@ResponseBody
public String addUser(HttpServletRequest request, HttpServletResponse response){
String username = "";
int age = 0;
String photoName = "";
byte[] photo = null; //创建一个通用的多部分解析器.
CommonsMultipartResolver multipartResolver = new CommonsMultipartResolver(request.getSession().getServletContext()); //判断 request 是否有文件上传,即多部分请求...
if(multipartResolver.isMultipart(request)){
//转换成多部分request
MultipartHttpServletRequest multiRequest = multipartResolver.resolveMultipart(request); //获取普通表单的属性
username = multiRequest.getParameter("username");
String ageStr = multiRequest.getParameter("age");
if(ageStr!=null){
try{
age = Integer.parseInt(ageStr);
}catch(Exception e){
e.printStackTrace();
}
} //取得request中的所有文件名
Iterator<String> iter = multiRequest.getFileNames();
while(iter.hasNext()){
//取得上传文件
MultipartFile file = multiRequest.getFile(iter.next());
if(file != null){
//取得当前上传文件的文件名称
photoName = file.getOriginalFilename();
try {
InputStream inputStream = file.getInputStream();
photo = new byte[inputStream.available()];
inputStream.read(photo);
inputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
} User user = new User(username, age, photoName, photo); int count = userService.insertUser(user); if(count > 0){
return "success";
}else{
return "failed";
} }
代码例子2：上传压缩包zip或者rar；这里是单包上传（single），每个zip/rar下面直接是一个一个的jpg图片；
//上传图片zip/rar文件 --
@RequestMapping("/uploadImageFile")
@ResponseBody
public String uploadImageFile(HttpServletRequest request, HttpServletResponse response){
CommonsMultipartResolver multipartResolver = new CommonsMultipartResolver(request.getSession().getServletContext());
if(multipartResolver.isMultipart(request)){
MultipartHttpServletRequest multiRequest = multipartResolver.resolveMultipart(request);
String packageType = multiRequest.getParameter("packageType"); if(packageType.equals("single")){ //单包
MultipartFile file = multiRequest.getFile("imgFile");
if(file != null){
String packageName = file.getOriginalFilename(); //上传的包名
String iconName = productService.getIconNameByPackage(packageName); //获取该包下面的缩略图名称 if(packageName.matches(".*\\.zip")){ //是zip压缩文件
try{
ZipInputStream zs = new ZipInputStream(file.getInputStream());
BufferedInputStream bs = new BufferedInputStream(zs);
ZipEntry ze;
byte[] picture = null;
while((ze = zs.getNextEntry()) != null){ //获取zip包中的每一个zip file entry
String fileName = ze.getName(); //pictureName
picture = new byte[(int) ze.getSize()]; //读一个文件大小
bs.read(picture, 0, (int) ze.getSize());
ImageFile image = new ImageFile(packageName, "N", fileName, picture); //保存image，非缩略图
productService.insertImage(image); if(fileName.equals(iconName)){ //这个picture要作为缩略图,进行裁剪、保存
String thumbName = ImageUtil.createThumbFileName(fileName); //生成缩略图名称
InputStream is = new ByteArrayInputStream(picture);
byte[] thumbPic = ImageUtil.clipImage(is, 100, 100, "jpg"); //进行裁剪
ImageFile thumbImage = new ImageFile(packageName, "Y", thumbName, thumbPic);
productService.insertImage(thumbImage);
}
}
bs.close();
zs.close();
return "success";
}catch(IOException e){
e.printStackTrace();
}
}else if(packageName.matches(".*\\.rar")){ //是rar压缩文件
try {
//MultipartFile file 转化为File 有临时文件产生：
CommonsMultipartFile cf= (CommonsMultipartFile) file;
DiskFileItem fi = (DiskFileItem ) cf.getFileItem();
File fs = fi.getStoreLocation();
Archive archive = new Archive(fs);
ByteArrayOutputStream bos = null;
byte[] picture = null;
FileHeader fh = archive.nextFileHeader();
while(fh!=null){
String fileName = fh.getFileNameString();
bos = new ByteArrayOutputStream();
archive.extractFile(fh, bos);
picture = bos.toByteArray();
ImageFile image = new ImageFile(packageName, "N", fileName, picture); //保存image，非缩略图
productService.insertImage(image);
fh = archive.nextFileHeader();
} bos.close();
archive.close();
return "success";
} catch (RarException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} }
}
}
} return "failed";
}
方法二：配置org.springframework.web.multipart.commons.CommonsMultipartResolver
<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>
代码例子：
//上传文件zip/rar 方法二 配置org.springframework.web.multipart.commons.CommonsMultipartResolver
@RequestMapping("/uploadImageFile2")
@ResponseBody
public String uploadImageFile2(HttpServletRequest request, HttpServletResponse response){
MultipartHttpServletRequest multiRequest = (MultipartHttpServletRequest) request;
String packageType = multiRequest.getParameter("packageType");
if(packageType.equals("single")){ //单包
MultipartFile file = multiRequest.getFile("imgFile");
if(file != null){
String packageName = file.getOriginalFilename(); //上传的包名
String iconName = productService.getIconNameByPackage(packageName); //获取该包下面的缩略图名称 if(packageName.matches(".*\\.zip")){ //是zip压缩文件
try{
ZipInputStream zs = new ZipInputStream(file.getInputStream());
BufferedInputStream bs = new BufferedInputStream(zs);
ZipEntry ze;
byte[] picture = null;
while((ze = zs.getNextEntry()) != null){ //获取zip包中的每一个zip file entry
String fileName = ze.getName(); //pictureName
picture = new byte[(int) ze.getSize()]; //读一个文件大小
bs.read(picture, 0, (int) ze.getSize());
ImageFile image = new ImageFile(packageName, "N", fileName, picture); //保存image，非缩略图
productService.insertImage(image); if(fileName.equals(iconName)){ //这个picture要作为缩略图,进行裁剪、保存
String thumbName = ImageUtil.createThumbFileName(fileName); //生成缩略图名称
InputStream is = new ByteArrayInputStream(picture);
byte[] thumbPic = ImageUtil.clipImage(is, 100, 100, "jpg"); //进行裁剪
ImageFile thumbImage = new ImageFile(packageName, "Y", thumbName, thumbPic);
productService.insertImage(thumbImage);
}
}
bs.close();
zs.close();
return "success";
}catch(IOException e){
e.printStackTrace();
}
}else if(packageName.matches(".*\\.rar")){ //是rar压缩文件 //....和上面一样。 }
}
} return "failed";
}
最后补充上面用到的工具类：ImageUtil.java(里面有对图片裁剪的方法)
package com.cy.util; import java.awt.image.BufferedImage;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream; import javax.imageio.ImageIO; public class ImageUtil {
/**
* 判断压缩文件的类型
*/ /**
* 生成缩略图名称
* @param srcFileName
* @return
*/
public static String createThumbFileName(String srcFileName){
StringBuffer thumbFileName = new StringBuffer(); int pos = srcFileName.lastIndexOf(".");
thumbFileName.append(srcFileName.substring(0, pos));
thumbFileName.append("_small");
thumbFileName.append(srcFileName.substring(pos, srcFileName.length()));
return thumbFileName.toString();
} /**
* 对图片进行剪裁
* @param is 图片输入流
* @param width 裁剪图片的宽
* @param height 裁剪图片的高
* @param imageFormat 输出图片的格式
* @return
*/
public static byte[] clipImage(InputStream is,int width, int height, String imageFormat){
ByteArrayOutputStream bos = new ByteArrayOutputStream();
try {
// 构造Image对象
BufferedImage src = javax.imageio.ImageIO.read(is);
// 缩小边长
BufferedImage tag = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
// 绘制 缩小 后的图片
tag.getGraphics().drawImage(src, 0, 0, width, height, null);
ImageIO.write(tag, imageFormat, bos);
} catch (IOException e) {
e.printStackTrace();
}finally{
try {
is.close();
} catch (IOException e) {
e.printStackTrace();
}
} return bos.toByteArray();
}
}
------------