图片上传

public ActionResult TestUpload(ActionContext ac){

ActionResult ar=new ActionResult();

JSONObject args=ac.getArguments();

 

String base64 = JsonUtil.getString(args, "base64").substring(23);

String base64len = JsonUtil.getString(args, "base64len");

 

String basePath = EcpParameter.getAttachmentDirectory();

String storePath = ((DateFormat) formats.get(EcpParameter.getAttachmentStoreType()))

.format(new Date());

UUID name = UUID.randomUUID();

String storeName = name + "."+"jpeg";

String absoluteName = FileUtil.joinPath(new String[] { basePath, storePath, storeName });

 

GenerateImage(base64,absoluteName);

 

PictureModel picture = new PictureModel();

picture.setId(name);

picture.setName(storeName);

picture.setStorePath(storePath);

picture.setStoreName(storeName);

picture.setUploadUserId(ac.getUserId());

picture.setUploadTime(new Date());

//picture.setSize((int) fileItem.getSize());

UUIDpictureId=PictureHome.getDao().insert(picture);

ar.putClientValue("pictureId", pictureId);

if(pictureId!=null){

ar.putClientValue("error", 0);

ar.putClientValue("url", PictureHome.getPictureUrl(pictureId.toString()));

}else{

ar.putClientValue("error", 1);

ar.putClientValue("message", "upload error");

}

if(ac.getResponse()!=null){

ac.getResponse().setContentType("text/html;charset=UTF-8");//application/json

}

ar.putClientValue("success", true);

return ar;

 

}

public static boolean GenerateImage(String imgStr, String imgFilePath) {// 对字节数组字符串进行Base64解码并生成图片

if (imgStr == null) // 图像数据为空

return false;

BASE64Decoder decoder = new BASE64Decoder();

try {

// Base64解码

byte[] bytes = decoder.decodeBuffer(imgStr);

for (int i = 0; i < bytes.length; ++i) {

if (bytes[i] < 0) {// 调整异常数据

bytes[i] += 256;

}

}

// 生成jpeg图片

OutputStream out = new FileOutputStream(imgFilePath);

out.write(bytes);

out.flush();

out.close();

return true;

} catch (Exception e) {

return false;

}

}

 

}