spring mvc+localResizeIMG を使用して HTML5 画像圧縮アップロードを実装する

<span style="white-space:pre">    </span><script src="<c:url value="/js/JQuery/jquery-1.10.0.min.js"/>"></script>  
<span style="white-space:pre">    </span><script type="text/javascript" src="<c:url value="/js/lrz/dist/lrz.bundle.js"/>"></script>

function fileChange(that){
		var filepath=$(that).val();
		if(filepath=="")
		{
			return;
		}
		var extStart=filepath.lastIndexOf(".");
		var ext=filepath.substring(extStart,filepath.length).toUpperCase();
		if(".jpg|.png|.bmp|.jpeg".toUpperCase().indexOf(ext.toUpperCase())==-1){
		   alert("只允许上传jpg、png、bmp、jpeg格式的图片");
			return false;
		}
     //以图片宽度为800进行压缩
	lrz(that.files[0], {
	     width: 800
	   })
	.then(function (rst) {
			//压缩后异步上传
	  		$.ajax({
			url : "<%=request.getContextPath()%>/common/fileUploadPicture",
			type: "POST",
			data : {
				imgdata:rst.base64//压缩后的base值
			},
			dataType:"json",
			cache:false,
			async:false,
			success : function(data) {
			if(data.success)
				{
					alert(data.message);///data.message为上传成功后的文件路径
				}else{
					alert(data.message);///data.message为上传失败原因
				}
							
						},
		error : function(){
				alert("上传失败");
						}
					});
	     });
}

import sun.misc.BASE64Decoder;//导入的base64的类  
/** 
     * 文件上传 
     */  
    @ResponseBody  
    @RequestMapping("common/fileUploadPicture")  
    public Object fileUploadPicture(String imgdata, HttpServletRequest request) {  
        LOGGER.info("[文件上传（fileUploadPicture）][params:imgdata=" + imgdata + "]");  
         BASE64Decoder decoder = new BASE64Decoder();  
        try {  
            String basePath = request.getRealPath("/upload_files");  
            string imgPath=basePath+"/test.jpg";  
            // new一个文件对象用来保存图片，默认保存当前工程根目录  
            File imageFile = new File(imgPath);  
            // 创建输出流  
            FileOutputStream outputStream = new FileOutputStream(imageFile);  
            // 获得一个图片文件流，我这里是从flex中传过来的  
            byte[] result = decoder.decodeBuffer(imgdata.split(",")[1]);//解码  
            for (int i = 0; i < result.length; ++i) {  
                if (result[i] < 0) {// 调整异常数据  
                result[i] += 256;  
            }  
        }  
            outputStream.write(result);  
  
            return new Result(true, imgPath);  
        } catch (AppException e1) {  
            LOGGER.error("[文件上传（fileUpload）-fastdfs][errors:" + e1 + "]");  
            return new Result(false, "文件上传失败");  
        } catch (Exception e) {  
            LOGGER.error("[文件上传（fileUpload）][errors:" + e + "]");  
            return new Result(false, "文件上传失败");  
        }finally{  
        outputStream.flush();   
        outputStream.close();  
          
        }  
    }

import java.io.Serializable;  
  
public class Result implements Serializable{  
    private static final long serialVersionUID = 1L;  
    private boolean success;  
    private String message;  
  
    public Result() {  
        success = true;  
    }  
  
    public Result(boolean success, String message) {  
        this.success = success;  
        this.message = message;  
    }  
  
    public boolean isSuccess() {  
        return success;  
    }  
  
    public void setSuccess(boolean success) {  
        this.success = success;  
    }  
  
    public String getMessage() {  
        return message;  
    }  
  
    public void setMessage(String message) {  
        this.message = message;  
    }  
  
    @Override  
    public String toString() {  
        return "Result [success=" + success + ", message=" + message + "]";  
    }  
  
}