简单记录主要是便于自己用，有需要的参考一下...

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附件为比较早的版本，自己修改过

1、实体bean --用multipartFile接收

public class UploadForm {

//上传的图片

private MultipartFile PhotoFile;

public MultipartFile getPhotoFile() {

return PhotoFile;

}

public void setPhotoFile(MultipartFile photoFile) {

PhotoFile = photoFile;

}

}

2、controller

@RequestMapping(value="/uploadImage")

@ResponseBody

public String uploadImage(UploadForm uploadForm,Model model ){

return uploadService.uploadImage(uploadForm,model);

}

3、service

@Transactional

public String uploadImage(UploadForm uploadForm,Model model ){

//图片类型

String imageType = siteForm.getImageType();

MultipartFile uploadFile = siteForm.getPhotoFile();

UploadResult result = PicUploadUtil.picUploadByFileAstrict(uploadFile, 1920, 572, 0, new String[]{"jpg","jpeg","png"}, false);

if(result.result != 0)

return "2";

//将图片信息保存到数据库

CtAttachment attachmentExample = new CtAttachment();

attachmentExample.setUserId(SecurityUserHelper.getCurrentUser().getPersonId());

attachmentExample.setAttCode(imageType);

attachmentExample.setAttName(uploadFile.getOriginalFilename());

attachmentExample.setAttUrl(result.download_url);

this.ctAttachmentDAO.insertNotNull(attachmentExample);

return result.download_url;

}

4、PicUploadUtil

/**

* 图片上传

* @param file

* @param width 宽度限制 <=0表示不校验

* @param height 高度限制 <=0表示不校验

* @param size 大小限制 <=0表示不校验

* @param suffix 后缀限制 null或length<0表示不校验

* @param needCompress 是否需要压缩

* @return

*/

public static UploadResult picUploadByFileAstrict(MultipartFile file,int width,int height,long size,String [] suffix,boolean needCompress) {

UploadResult result = new UploadResult();

try {

String imgName = file.getOriginalFilename();

String imgSuffix = imgName.substring(imgName.lastIndexOf(".") + 1);

//不用添加后缀

String imgNameTemp = UUID.randomUUID().toString();

File fileTemp = new File(picTempDir + imgNameTemp);

//这里只使用路径，而不创建真实文件，所有也不用考虑删除文件的问题

if(fileTemp.exists()){

log.error("target file is exists , create fail !");

result.result = -1;

return result;

}

byte[] advImageBytes = null;

InputStream advImageStream = null;

advImageStream = file.getInputStream();

advImageBytes = FileCopyUtils.copyToByteArray(advImageStream);

FileCopyUtils.copy(advImageBytes, fileTemp);

advImageStream.close();

BufferedImage buff = ImageIO.read(fileTemp);

if((width > 0 ? buff.getWidth() > width : false) || (height > 0 ? buff.getHeight() > height : false) ||

(size > 0 ?file.getSize() > size : false) || ((null != suffix&&suffix.length>0)?!ArrayUtils.contains(suffix, imgSuffix):false)){

//TODO 如果需要压缩，则直接压缩到指定大小，不用校验

/*//返回之前先删除添加的文件,

fileTemp.delete();*/

result.result = 1;

return result;

}

PicCloud pc = new PicCloud(APP_ID, SECRET_ID, SECRET_KEY);

int ret = pc.UploadByFile("", fileTemp, result);

if(ret == 0){

result.result = 0;

}else{

result.result = -1;

}

return result;

} catch (Exception e) {

log.error(e);

}

return null;

}

5、jsp页面

<div id="updateBox" style="display:none;">

<input style="border:0;width:190px;" type="file" id="PhotoFile" name="PhotoFile"/>

<button class="leeer" type="button" οnclick="addPhoto(<c:out value='${model.id }'/>);">上传图片</button>

<!--<button class="leeer" οnclick="updateImg(1);return false;">关闭</button>

--></div>

6、spring-mvc 配置

<!-- SpringMVC上传文件时，需要配置MultipartResolver处理器 -->

<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">

<!-- 指定所上传文件的总大小不能超过200KB。注意maxUploadSize属性的限制不是针对单个文件，而是所有文件的容量之和 -->

<property name="maxUploadSize" value="10000000"/>

</bean>

<!-- SpringMVC在超出上传文件限制时，会抛出org.springframework.web.multipart.MaxUploadSizeExceededException -->

<!-- 该异常是SpringMVC在检查上传的文件信息时抛出来的，而且此时还没有进入到Controller方法中 -->

<bean id="exceptionResolver" class="org.springframework.web.servlet.handler.SimpleMappingExceptionResolver">

<property name="exceptionMappings">

<props>

<!-- 遇到MaxUploadSizeExceededException异常时，自动跳转到error_fileupload.jsp页面 -->

<prop key="org.springframework.web.multipart.MaxUploadSizeExceededException">error_fileupload</prop>

</props>

</property>

</bean>