spring(java,js,html) 截图上传

html

 <#-- 上传头像 测试页 使用imgareaselect 插件    -->

最后 上传了这个插件 共学习参考

<link rel="stylesheet" type="text/css" href="${frontRes}/imgareaselect/css/imgareaselect-animated.css" /><link rel="stylesheet" type="text/css" href="${frontRes}/imgareaselect/css/index.css" />
<script type="text/javascript" src="${frontRes}/imgareaselect/jquery-1.4.2.min.js"></script>
<script type="text/javascript" src="${frontRes}/imgareaselect/jquery.imgareaselect.pack.js"></script>
<script type="text/javascript" src="${frontRes}/imgareaselect/ajaxfileupload.js"></script><script>
function addFile(obj){//document.getElementById('img').src = path;$.ajaxFileUpload({url:'${huluUrl}/trainer/upload/ajaxUpload', //用于文件上传的服务器端请求地址secureuri: false, //是否需要安全协议，一般设置为falsefileElementId: 'photoFile', //文件上传域的IDdataType: 'json', //返回值类型 一般设置为jsonsuccess: function (data){//服务器成功响应处理函数var infoArray = eval("("+data+")"); //包数据解析为json格式var arr = infoArray.data;$("#img").attr("src","/images/"+arr.photo);},error: function (){//服务器响应失败处理函数alert('与服务器通信失败，请稍后再试！');parent.location.reload();}});
}function preview(img, selection) {if (!selection.width || !selection.height)return;//预览var scaleX = 100 / selection.width;var scaleY = 100 / selection.height;//var imgx = document.getElementById("photo").style.width;var imgx = parseInt($("#photo").css("width").split("px")[0]);var imgy = parseInt($("#photo").css("height").split("px")[0]);console.debug(imgx+"===="+imgy);$('#preview img').css({width : Math.round(scaleX * imgx),height : Math.round(scaleY * imgy),marginLeft : -Math.round(scaleX * selection.x1),marginTop : -Math.round(scaleY * selection.y1)});$('#x1').val(selection.x1);$('#y1').val(selection.y1);$('#x2').val(selection.x2);$('#y2').val(selection.y2);$('#w').val(selection.width);$('#h').val(selection.height);//后台数据$('#x1s').val(selection.x1);$('#y1s').val(selection.y1);$('#x2s').val(selection.x2);$('#y2s').val(selection.y2);$('#imgx').val(parseInt(imgx));//原图width宽度$('#imgy').val(parseInt(imgy));//原图高度height}$(function(selection) {var imgx = $("#photo").css("width").split("px")[0];var imgy = $("#photo").css("height").split("px")[0];var ares = 0;console.debug(imgx+"===="+imgy);if(imgx>imgy){ares = imgy;}else{ares = imgx;}var ias = $('#photo').imgAreaSelect({aspectRatio : '1:1',handles : true,fadeSpeed : 200,onSelectChange : preview,instance : true});ias.setSelection(0, 0, ares-1, ares-1);//初始化选择区域ias.setOptions({show : true});ias.update();$(".imgareaselect-outer").css("cursor","Crosshair");$(".imgareaselect-outer").css("background-color","rgba(255,255,255,0.9)");//预览var scaleX = 100 / ares;var scaleY = 100 / ares;$('#preview img').css({width : Math.round(scaleX * imgx),height : Math.round(scaleY * imgy),marginLeft : -Math.round(scaleX * 0),marginTop : -Math.round(scaleY * 0)});//后台数据$('#x1s').val(0);$('#y1s').val(0);$('#x2s').val(ares-1);$('#y2s').val(ares-1);$('#imgx').val(imgx);//原图width宽度$('#imgy').val(imgy);//原图高度height});
</script>
<div class="container" style="margin-top:20px;"><div class="row"><div class="col-xs-9 pull-right"><div class="media media-heading"><h4 style="font-weight: 600;float: left">上传照片</h4></div><div class="row" style="margin-top: 15px"><div class="col-lg-12"><div class="btn-group" style="float: left"><div class="btn btn-default" role="button" style="position: relative; overflow: hidden;background-color: #8DC21F;color: #ffffff;"><span>+添加照片</span><input id="photoFile"  type="file" name="photoFile" οnchange="addFile(this);" style="height:34px;position: absolute; right: 0px; top: 0px; margin: 0px; padding: 0px; cursor: pointer; opacity: 0;"></div></div><span style="float: left; margin-left: 15px; color: #888888"><ul><li>建议本人照片</li><li>只支持JPG、PNG、GIF，大小不超过5M</li></ul></span></div></div><div class="row"><div class="col-lg-12"><div class="shangchuantouxiang"><img src="/images/${(trainer.photo)!""}" alt="..." id ="img" class="img-circle" style="width: 320px; height: 320px"></div></div></div><form action ="${huluUrl}/trainer/upload/uploadPhotoTest" method="post" enctype="multipart/form-data" ><input type="text" id="x1s" name = "x1s" value="-" /><input type="text" id="y1s" name = "y1s" value="-" /><input type="text" id="x2s" name = "x2s" value="-" /><input type="text" id="y2s" name = "y2s" value="-" /><input type="text" id="imgx" name = "imgx" value="-" /><input type="text" id="imgy" name = "imgy" value="-" /><div class="row" style="margin-top: 15px; margin-left: 80px"><div class="col-lg-5"><div class="btn-group"><button type="button" class="btn btn-default"id="chongxinshangchuan">重新上传</button></div><div class="btn-group"><button type="submit" class="btn btn-default" id="baocun">　保存　</button></div></div></div></form></div></div>
</div><div id="root"><div id="main"><div class="container demo"><div style="float: left; width: 50%;"><p class="instructions">Click and drag on the image to select an area.</p><div style="width: 302px;height: 302px;"><div style="width: 302px;height:302px;border: 1px solid #aaa;"><div style="line-height: 300px; text-align: center; overflow: hidden; z-index: 1001; width: 300px; height: 300px; position: relative; left: 50%; top: 50%; margin-left: -150px; margin-top: -150px; "><img id="photo" src="/images/${(trainer.photo)!""}" style="max-height:300px;max-width: 300px;" /></div></div></div></div><div style="float: left; width: 50%;"><p style="font-size: 110%; font-weight: bold; padding-left: 0.1em;">Selection Preview</p><div style="width: 100px; height: 100px;"><div id="preview" style="width: 100px; height: 100px; overflow: hidden;"><img src="/images/${trainer.photo!}" style="width: 100px; height: 100px;" /></div></div><table><thead><tr><th colspan="2"	style="font-size: 110%; font-weight: bold; text-align: left; padding-left: 0.1em;">Coordinates</th><th colspan="2"	style="font-size: 110%; font-weight: bold; text-align: left; padding-left: 0.1em;">Dimensions</th></tr></thead><tbody><tr><td style="width: 10%;"><b>X<sub>1</sub>:</b></td><td style="width: 30%;"><input type="text" id="x1" value="-" /></td><td style="width: 20%;"><b>Width:</b></td><td><input type="text" value="-" id="w" /></td></tr><tr><td><b>Y<sub>1</sub>:</b></td><td><input type="text" id="y1" value="-" /></td><td><b>Height:</b></td><td><input type="text" id="h" value="-" /></td></tr><tr><td><b>X<sub>2</sub>:</b></td><td><input type="text" id="x2" value="-" /></td><td></td><td></td></tr><tr><td><b>Y<sub>2</sub>:</b></td><td><input type="text" id="y2" value="-" /></td><td></td><td></td></tr></tbody></table></div></div></div>
</div>

java

//显示图片需要在服务端配置一个虚拟路径

(tomcat) server.xml

回显一下数据

/*** 跳到上传头像2(可截取图片)* * @return*/@RequestMapping(value = "toUploadPhoto", method = RequestMethod.GET)public ModelAndView toUploadTest() {ModelAndView mav = leftMenu("/trainer/upload/uploadPhoto");// Trainer trainer = null;try {Long userId = FrontShiroUtil.getUserId();if (null != userId) {trainer = trainerRepo.findOne(userId);trainerDbSvc.updateLastLoginTime(userId);}} catch (Exception e) {e.printStackTrace();}mav.addObject("trainer", trainer);return mav;}

// 局部刷新上传图片@RequestMapping("/ajaxUpload")public @ResponseBody AjaxResult ajaxUpload(MultipartHttpServletRequest request) {Trainer trainer = new Trainer();// 获得第1张图片（根据前台的name名称得到上传的文件）MultipartFile file = request.getFile("photoFile");if (file.getSize() != 0) {// 获得文件名：String filename = file.getOriginalFilename();String timeType = null;if (null != filename && !filename.equals("")) {String imgtype = filename.substring(filename.lastIndexOf("."));// 获取路径String ctxPath = "E:/rudongImage/photo/";// 创建文件File dirPath = new File(ctxPath);if (!dirPath.exists()) {dirPath.mkdirs();}// 以时间为文件名Date date = new Date();SimpleDateFormat sdformat = new SimpleDateFormat("yyyyMMddHHmmss");// 24小时制String LgTime = sdformat.format(date);timeType = LgTime + imgtype;File uploadFile = new File(ctxPath + timeType);try {FileCopyUtils.copy(file.getBytes(), uploadFile);} catch (IOException e) {e.printStackTrace();}}String headPhotoPath = "photo/" + timeType;trainer.setPhoto(headPhotoPath);}try {// 根据UserId查询培训师Long userId = FrontShiroUtil.getUserId();if (null != userId) {trainer.setUserId(userId);// 更新培训师头像trainerDbSvc.updateTrainerPhoto(trainer);}} catch (Exception e) {e.printStackTrace();}return AjaxResult.createSuccess(trainer);//<span style="font-family: Arial, Helvetica, sans-serif;">AjaxResult 可修改</span>
}

/*** 截取区域上传图片测试* * @return*/@RequestMapping(value = "uploadPhotoTest", method = RequestMethod.POST)public ModelAndView uploadPhotoTest(MultipartHttpServletRequest request, @RequestParam("x1s") Integer x1,@RequestParam("y1s") Integer y1, @RequestParam("x2s") Integer x2, @RequestParam("y2s") Integer y2,@RequestParam("imgx") Integer imgWidth, @RequestParam("imgy") Integer imgHeight) {ModelAndView mav = leftMenu("redirect:/trainer/upload/toUploadPhoto");Trainer trainer = null;try {// 根据UserId查询培训师Long userId = FrontShiroUtil.getUserId();if (null != userId) {trainer = trainerRepo.findOne(userId);}} catch (Exception e) {e.printStackTrace();}File uploadFile = new File("E:/rudongImage/" + trainer.getPhoto());InputStream is = null;BufferedImage src = null;int w = -1;int h = -1;try {is = new FileInputStream(uploadFile);src = javax.imageio.ImageIO.read(is);w = src.getWidth(null); // 得到源图宽h = src.getHeight(null); // 得到源图高is.close();} catch (Exception e) {e.printStackTrace();}Integer l = 0;// 以小边为准(原图尺寸)if (w < h) {l = w;} else {l = h;}// 以小边为准(缩略图尺寸)Integer l2 = 0;if (imgWidth < imgHeight) {l2 = imgWidth;} else {l2 = imgHeight;}Integer x = (x1 * l) / l2;// 起点xInteger y = (y1 * l) / l2;// 起点yInteger xs = (x2 * l) / l2;// 终点x 对角线位置Integer ys = (y2 * l) / l2;// 终点y 对角线位置ImageUtil imageUtil = new ImageUtil();// 返回截取后的文件名String photoName = "";imageUtil.cutImage(uploadFile, "E:/rudongImage/photo/", x, y, xs - x, ys - y);String headPhotoPath = "photo/" + photoName;trainer.setPhoto(headPhotoPath);// 更新培训师头像trainerDbSvc.updateTrainerPhoto(trainer);return mav;}

工具类

import java.awt.Color;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.Rectangle;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Arrays;
import java.util.Iterator;import javax.imageio.ImageIO;
import javax.imageio.ImageReadParam;
import javax.imageio.ImageReader;
import javax.imageio.stream.ImageInputStream;import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/*** 图片截取工具类*/
public class ImageUtil {private Logger log = LoggerFactory.getLogger(getClass());private static String DEFAULT_THUMB_PREVFIX = "thumb_";private static String DEFAULT_CUT_PREVFIX = "cut_";private static Boolean DEFAULT_FORCE = false;/*** <p>Title: cutImage</p>* <p>Description:  根据原图与裁切size截取局部图片</p>* @param srcImg    源图片* @param output    图片输出流* @param rect        需要截取部分的坐标和大小*/public void cutImage(File srcImg, OutputStream output, java.awt.Rectangle rect){if(srcImg.exists()){java.io.FileInputStream fis = null;ImageInputStream iis = null;try {fis = new FileInputStream(srcImg);// ImageIO 支持的图片类型 : [BMP, bmp, jpg, JPG, wbmp, jpeg, png, PNG, JPEG, WBMP, GIF, gif]String types = Arrays.toString(ImageIO.getReaderFormatNames()).replace("]", ",");String suffix = null;// 获取图片后缀if(srcImg.getName().indexOf(".") > -1) {suffix = srcImg.getName().substring(srcImg.getName().lastIndexOf(".") + 1);}// 类型和图片后缀全部小写，然后判断后缀是否合法if(suffix == null || types.toLowerCase().indexOf(suffix.toLowerCase()+",") < 0){log.info("Sorry, the image suffix is illegal. the standard image suffix is {}." + types);return ;}// 将FileInputStream 转换为ImageInputStreamiis = ImageIO.createImageInputStream(fis);// 根据图片类型获取该种类型的ImageReaderImageReader reader = ImageIO.getImageReadersBySuffix(suffix).next();reader.setInput(iis,true);ImageReadParam param = reader.getDefaultReadParam();param.setSourceRegion(rect);BufferedImage bi = reader.read(0, param);ImageIO.write(bi, suffix, output);} catch (FileNotFoundException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();} finally {try {if(fis != null) fis.close();if(iis != null) iis.close();if(output != null) output.close();} catch (IOException e) {e.printStackTrace();}}}else {log.info("the src image is not exist.");}}public void cutImage(File srcImg, OutputStream output, int x, int y, int width, int height){cutImage(srcImg, output, new java.awt.Rectangle(x, y, width, height));}public void cutImage(File srcImg, String destImgPath, java.awt.Rectangle rect){File destImg = new File(destImgPath);if(destImg.exists()){String p = destImg.getPath();try {if(!destImg.isDirectory()) p = destImg.getParent();if(!p.endsWith(File.separator)) p = p + File.separator;cutImage(srcImg, new java.io.FileOutputStream(p + DEFAULT_CUT_PREVFIX + "_" + new java.util.Date().getTime() + "_" + srcImg.getName()), rect);} catch (FileNotFoundException e) {log.info("the dest image is not exist.");}}else log.info("the dest image folder is not exist.");}public void cutImage(File srcImg, String destImg, int x, int y, int width, int height){cutImage(srcImg, destImg, new java.awt.Rectangle(x, y, width, height));}public void cutImage(String srcImg, String destImg, int x, int y, int width, int height){cutImage(new File(srcImg), destImg, new java.awt.Rectangle(x, y, width, height));}/*** <p>Title: thumbnailImage</p>* <p>Description: 根据图片路径生成缩略图 </p>* @param imagePath    原图片路径* @param w            缩略图宽* @param h            缩略图高* @param prevfix    生成缩略图的前缀* @param force        是否强制按照宽高生成缩略图(如果为false，则生成最佳比例缩略图)*/public void thumbnailImage(File srcImg, OutputStream output, int w, int h, String prevfix, boolean force){if(srcImg.exists()){try {// ImageIO 支持的图片类型 : [BMP, bmp, jpg, JPG, wbmp, jpeg, png, PNG, JPEG, WBMP, GIF, gif]String types = Arrays.toString(ImageIO.getReaderFormatNames()).replace("]", ",");String suffix = null;// 获取图片后缀if(srcImg.getName().indexOf(".") > -1) {suffix = srcImg.getName().substring(srcImg.getName().lastIndexOf(".") + 1);}// 类型和图片后缀全部小写，然后判断后缀是否合法if(suffix == null || types.toLowerCase().indexOf(suffix.toLowerCase()+",") < 0){log.info("Sorry, the image suffix is illegal. the standard image suffix is {}." + types);return ;}log.info("target image's size, width:{}, height:{}.",w,h);Image img = ImageIO.read(srcImg);// 根据原图与要求的缩略图比例，找到最合适的缩略图比例if(!force){int width = img.getWidth(null);int height = img.getHeight(null);if((width*1.0)/w < (height*1.0)/h){if(width > w){h = Integer.parseInt(new java.text.DecimalFormat("0").format(height * w/(width*1.0)));log.info("change image's height, width:{}, height:{}.",w,h);}} else {if(height > h){w = Integer.parseInt(new java.text.DecimalFormat("0").format(width * h/(height*1.0)));log.info("change image's width, width:{}, height:{}.",w,h);}}}BufferedImage bi = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);Graphics g = bi.getGraphics();g.drawImage(img, 0, 0, w, h, Color.LIGHT_GRAY, null);g.dispose();// 将图片保存在原目录并加上前缀ImageIO.write(bi, suffix, output);output.close();} catch (IOException e) {System.out.println("generate thumbnail image failed."+e);}}else{System.out.println("the src image is not exist.");}}public void thumbnailImage(File srcImg, int w, int h, String prevfix, boolean force){String p = srcImg.getAbsolutePath();try {if(!srcImg.isDirectory()) p = srcImg.getParent();if(!p.endsWith(File.separator)) p = p + File.separator;thumbnailImage(srcImg, new java.io.FileOutputStream(p + prevfix +srcImg.getName()), w, h, prevfix, force);} catch (FileNotFoundException e) {log.info("the dest image is not exist."+e);}}public void thumbnailImage(String imagePath, int w, int h, String prevfix, boolean force){File srcImg = new File(imagePath);thumbnailImage(srcImg, w, h, prevfix, force);}public void thumbnailImage(String imagePath, int w, int h, boolean force){thumbnailImage(imagePath, w, h, DEFAULT_THUMB_PREVFIX, DEFAULT_FORCE);}public void thumbnailImage(String imagePath, int w, int h){thumbnailImage(imagePath, w, h, DEFAULT_FORCE);}public void readUsingImageReader(String src, String dest, int w, int h)throws Exception {// 取得图片读入器Iterator readers = ImageIO.getImageReadersByFormatName("png");ImageReader reader = (ImageReader) readers.next();// 取得图片读入流InputStream source = new FileInputStream(src);ImageInputStream iis = ImageIO.createImageInputStream(source);reader.setInput(iis, true);// 图片参数ImageReadParam param = reader.getDefaultReadParam();// 100，200是左上起始位置，300就是取宽度为300的，就是从100开始取300宽，就是横向100~400，同理纵向200~350的区域就取高度150// Rectangle rect = new Rectangle(100, 200, 300, 150);//int hh = 0;if (h > 100)hh = (h - 100) / 3;Rectangle rect = new Rectangle(0, hh, 227, 100);param.setSourceRegion(rect);BufferedImage bi = reader.read(0, param);ImageIO.write(bi,"jpg", new File(dest));}public static void main(String[] args) throws Exception {//new ImageUtil().thumbnailImage("imgs/Tulips.jpg", 150, 100);//new ImageUtil().cutImage("imgs/Tulips.jpg","imgs", 250, 70, 300, 400);//new ImageUtil().readUsingImageReader("e://rudongImage/photo/20160302090226.png", "e://rudongImage/photo/2.png", 227, 163);}}

xml配置

<bean id="multipartResolver"
class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<!-- one of the properties available; the maximum file size in bytes

-->

</bean>

插件连接

http://download.csdn.net/download/u014596302/9572377

样式没调有点丑功能都有