实现头像的上传

jsp：

上传jsp上的头像

<div class="factoryLogo">  <img <c:if test="${sessionFactory.factoryLogo == null}">src="static/img/factoryHeader.jpg"</c:if>   <c:if test="${sessionFactory.factoryLogo != null}">src="factory/imageShowSimple?seq=${sessionFactory.factoryLogo}"</c:if>    class="img-rounded" id="headerPic"> <a id="portraitUpload" href="#" onclick="return false;">上传企业logo</a> <input id="portraitFile" type="file" name="portraitFile" onchange="portraitFileUpload()"/>  </div>

在js中：

实现portraitFileUpload

function imgCheck(filepath){    var extStart = filepath.lastIndexOf(".");    var ext = filepath.substring(extStart, filepath.length).toUpperCase();    if (ext != ".PNG" && ext != ".JPG") {        showMessage("图片只支持png,jpg格式");        return false;    }    return true;}

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function portraitFileUpload(){if(!imgCheck($("#portraitFile").val())){return false;}$.ajaxFileUpload({type: "POST",url:'factory/uploadPortrait',secureuri:false,fileElementId:'portraitFile',dataType: 'json',success: function(data,status){ if(data.result == "success"){ if(data.imgSeq != null){ $("#headerPic").attr("src","factory/imageShowSimple?seq="+data.imgSeq); } $(window.parent.document).contents().find("#touxiangWelcomeImg").attr("src", "factory/imageShowSimple?seq="+data.imgSeq); showMessage("头像上传成功"); } else { showMessage("头像" + data.result); }$("#portraitFile").replaceWith('<input id="portraitFile" name="portraitFile" type="file" onchange="portraitFileUpload()"/>');},        error: function(data,status,e){        showMessage("头像上传异常");        }});}

controller：

@RequestMapping("uploadPortrait")@ResponseBodypublic Object uploadPortrait(HttpSession httpSession,HttpServletRequest request) throws IOException {logBefore(logger, "factory/uploadPortrait");    MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request;      MultipartFile file = multipartRequest.getFile("portraitFile");// 获取上传文件名          Map<String, Object> map = new HashMap<String, Object>();    byte[] imgWeb = new byte[(int)file.getSize()];    imgWeb = file.getBytes();        int size = file.getInputStream().available() / 1024;        // 大于8M不予受理    if(size > 8 * 1024){    map.put("result", "图片文件不得大于8M");    return JSON.toJSONString(map,true);    }        imgWeb = imgWebCompress(size,request,file,map,imgWeb);        FactoryFactoryInfo factoryInfo = (FactoryFactoryInfo) request.getSession().getAttribute(Const.SESSION_FACTORY);    String factoryId = String.valueOf(factoryInfo.getFactoryId());     //上传图片 调用接口保存头像以及获取头像ID    UploadPictureParam picParam = new UploadPictureParam();    UploadPictureResult picResult = new UploadPictureResult();        picParam.setFactoryId(String.valueOf(factoryId));    picParam.setDifferent(FactoryConsts.STRING_WEB_ONE);//web    picParam.setDiffPicture(FactoryConsts.CHAR_PIC_HEAD);//头像    picParam.setImgWeb(imgWeb);    picParam.setPictureName("portraitFile");        picResult = factoryInfoService.uploadPicture(picParam);    //String imgSeq = null;        if(picResult != null && "0".equals(picResult.getResult())){    //获取企业头像地址    WriteFactoryPictureParam wfpParam = new WriteFactoryPictureParam();wfpParam.setFactoryId(factoryId);wfpParam.setPostfix("JPG");WriteFactoryPictureResult wfpResult = new WriteFactoryPictureResult();wfpResult = jobInfoService.writeFactoryPicture(wfpParam);//企业头像地址String url = "";if(wfpResult != null && "0".equals(wfpResult.getResult())){url = wfpResult.getUrl();}FactorySaveBaseInfoParam UpParam = new FactorySaveBaseInfoParam();FactorySaveBaseInfoResult UpResult = new FactorySaveBaseInfoResult();UpParam.setFactoryId(Long.valueOf(factoryId));UpParam.setFactoryLogoPath(url);UpParam.setUpdateUser(factoryId);UpParam.setKbn("3");UpResult = factoryInfoService.updateFactoryInfo(UpParam);    //获取头像ID    FactoryFactoryInfoParam infoParam = new FactoryFactoryInfoParam();    FactoryFactoryInfoResult infoResult = new FactoryFactoryInfoResult();infoParam.setFactoryId(String.valueOf(factoryId));infoParam.setDifferent(FactoryConsts.STRING_WEB_ONE); //webinfoResult = factoryInfoService.factoryInfo(infoParam);map.put("imgSeq", String.valueOf(infoResult.getFactoryInfoEx().getFactoryLogo()));httpSession.setAttribute(Const.SESSION_FACTORY, infoResult.getFactoryInfoEx());map.put("result", "success");    }else{    map.put("result", "上传图片失败");    }    return JSON.toJSONString(map,true);}

/** * 图片压缩 *  * @param  * @return * @throws IOException  * @throws Exception  */private byte[] imgWebCompress(int size,HttpServletRequest request,MultipartFile file,Map<String, Object> map,byte[] imgWeb) throws IOException{        // 大于100K压缩    if(size > FactoryConsts.INT_100){        CommonsMultipartFile cf= (CommonsMultipartFile)file;         DiskFileItem fi = (DiskFileItem)cf.getFileItem();             File oldFile = fi.getStoreLocation();    // 创建新的文件    String path = request.getSession().getServletContext().getRealPath("/") + "files" + File.separator + "temp" + File.separator;        File newZipFile = new File(path + String.valueOf(System.currentTimeMillis()) + ".jpg");           if (!newZipFile.exists()) {newZipFile.createNewFile();    }        FactoryImageZipService.zipImageFile(oldFile, newZipFile, 600, 600);        imgWeb = getImageFileByte(newZipFile);    }else{        imgWeb = new byte[(int)file.getSize()];        imgWeb = file.getBytes();    }    return imgWeb;}/** * 获取图片文件的数组 *  * @param filePath * @return */@SuppressWarnings("finally")private byte[] getImageFileByte(File file){FileInputStream fin = null;byte[] content = null;try {fin = new FileInputStream(file);ByteBuffer nbf = ByteBuffer.allocate((int) file.length());        byte[] array = new byte[1024];        int length = 0;while ((length = fin.read(array)) > 0) {if (length != 1024) {nbf.put(array, 0, length);} else {nbf.put(array);}}// 图片数组content = nbf.array();} catch (FileNotFoundException e) {logger.info("文件不存在");e.printStackTrace();} catch (IOException e) {logger.info("文件读写异常");e.printStackTrace();} finally {// 关闭流try {if (fin != null) {fin.close();}} catch (IOException e) {logger.info("文件关闭异常");e.printStackTrace();} finally{// 删除临时文件if(file.exists()){file.delete();}return content;}}}

FactoryImageZipService文件调用

package service.factory;import java.awt.Color;import java.awt.Graphics2D;import java.awt.Image;import java.awt.Transparency;import java.awt.image.BufferedImage;import java.awt.image.ColorModel;import java.io.File;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import javax.imageio.IIOImage;import javax.imageio.ImageIO;import javax.imageio.ImageWriteParam;import javax.imageio.ImageWriter;import org.springframework.web.multipart.MultipartFile;public class FactoryImageZipService {        /**     * 等比例压缩图片文件<br> 先保存原文件，再压缩、上传     * @param oldFile  要进行压缩的文件     * @param newFile  新文件     * @param width  宽度 //设置宽度时（高度传入0，等比例缩放）     * @param height 高度 //设置高度时（宽度传入0，等比例缩放）     * @param quality 质量     * @return 返回压缩后的文件的全路径     */     public static String zipImageFile(File oldFile, File newFile, int width, int height) {         if (oldFile == null) {             return null;        }         try {             /** 对服务器上的临时文件进行处理 */             BufferedImage srcFile = ImageIO.read(oldFile);                        // 判断图片背景是否为透明if (srcFile.getTransparency() == Transparency.TRANSLUCENT) {// 去掉透明背景，设置为白色srcFile = get24BitImage(srcFile, Color.WHITE);}            // 原图片宽            int oldImageWidth = srcFile.getWidth(null);            // 原图片高            int olgImageHight = srcFile.getHeight(null);            // 图片比率            double imageRate;            if (width > 0) {imageRate = width / (double) oldImageWidth;height = (int) (olgImageHight * imageRate);} else {if (height > 0) {imageRate = height / (double) olgImageHight;width = (int) (oldImageWidth * imageRate);}}            /** 宽,高设定 */ BufferedImage tag = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);            tag.getGraphics().drawImage(srcFile.getScaledInstance(width, height, Image.SCALE_SMOOTH), 0, 0, null);                        /** 压缩之后临时存放位置 */             FileOutputStream out = new FileOutputStream(newFile);               ImageIO.write(tag,  "jpeg" , new File(newFile.getPath()));                        out.flush();            out.close();           } catch (FileNotFoundException e) {             e.printStackTrace();        } catch (IOException e) {             e.printStackTrace();        }         return newFile.getAbsolutePath();    }        /**     * 按宽度高度压缩图片文件<br> 先保存原文件，再压缩、上传     * @param oldFile  要进行压缩的文件全路径     * @param newFile  新文件     * @param width  宽度     * @param height 高度     * @param quality 质量     * @return 返回压缩后的文件的全路径     */     public static void zipWidthHeightImageFile(Image image,File newFile, int width, int height) {         if (image == null) {            return;        }         try {             /** 宽,高设定 */             BufferedImage tag = new BufferedImage(width, height,BufferedImage.TYPE_INT_RGB);            tag.getGraphics().drawImage(image, 0, 0, width, height, null);               /** 压缩之后临时存放位置 */             FileOutputStream out = new FileOutputStream(newFile);               ImageIO.write(tag, "jpg", out);                                    out.close();    } catch (FileNotFoundException e) {             e.printStackTrace();    } catch (IOException e) {             e.printStackTrace();    }     }        /**     * 根据质量和宽高压缩图片     *      * @param file     * @param newFile     */    public static void zipQualityImageFile(MultipartFile file, File newFile) {     // 如果文件为NULL返回    if (file == null) {    return;    }    try {     Image image = ImageIO.read(file.getInputStream());    int w = image.getWidth(null);    int h = image.getHeight(null);    int width = (int)(0.3 * w);    int height = (int)(0.3 * h);        /** 宽,高设定 */         double rate1 = ((double) image.getWidth(null)) / (double) width + 0.1;               double rate2 = ((double) image.getHeight(null)) / (double) height + 0.1;               // 根据缩放比率大的进行缩放控制               double rate = rate1 > rate2 ? rate1 : rate2;               int newWidth = (int) (((double) image.getWidth(null)) / rate);               int newHeight = (int) (((double) image.getHeight(null)) / rate);         BufferedImage tag = new BufferedImage(newWidth, newHeight,BufferedImage.TYPE_4BYTE_ABGR);    for (int i = 0; i < newWidth; i++) {for (int j = 0; j < newHeight; j++) {int rgb = tag.getRGB(i, j);if (isBackPixel(rgb)) {tag.setRGB(i, j, 0);}}}        tag.getGraphics().drawImage(image, 0, 0, newWidth, newHeight, null);     /** 压缩之后临时存放位置 */     FileOutputStream out = new FileOutputStream(newFile);    // 指定写图片的方式为 jpg      ImageWriter imgWrier = ImageIO.getImageWritersByFormatName("png").next();          ImageWriteParam imgWriteParams = new javax.imageio.plugins.jpeg.JPEGImageWriteParam(null);              // 要使用压缩，必须指定压缩方式为MODE_EXPLICIT              imgWriteParams.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);              // 将压缩质量设置为 0 和 1 之间的某个值。              imgWriteParams.setCompressionQuality((float)0.1);              // 指定 writer 使用逐步模式写出图像，从而输出流将包含一系列质量递增的扫描。            imgWriteParams.setProgressiveMode(ImageWriteParam.MODE_DISABLED);             ColorModel colorModel = ColorModel.getRGBdefault();              // 指定压缩时使用的色彩模式              imgWriteParams.setDestinationType(new javax.imageio.ImageTypeSpecifier(colorModel, colorModel                      .createCompatibleSampleModel(width, height)));              imgWrier.reset();              // 必须先指定 out值，才能调用write方法, ImageOutputStream可以通过任何 OutputStream构造              imgWrier.setOutput(ImageIO.createImageOutputStream(out));              // 调用write方法，就可以向输入流写图片              imgWrier.write(null, new IIOImage(tag, null, null), imgWriteParams);          out.close();    } catch (FileNotFoundException e) {     e.printStackTrace();    } catch (IOException e) {     e.printStackTrace();    }     }        /**     * 判断当前像素是否为黑色不透明的像素（-16777216）     * @param pixel 要判断的像素     * @return 是背景像素返回true，否则返回false     */private static boolean isBackPixel(int pixel) {int back[] = { -16777216 };for (int i = 0; i < back.length; i++) {if (back[i] == pixel){return true;}}return false;}/** * 去掉PNG的透明背景设置为白色 *  * @param image * @param bgColor * @return */    private static BufferedImage get24BitImage(BufferedImage image, Color bgColor) {            int width = image.getWidth();                int height = image.getHeight();                BufferedImage newImage = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);                Graphics2D graphic = newImage.createGraphics();                graphic.setColor(bgColor);        graphic.fillRect(0, 0, width, height);        graphic.drawRenderedImage(image, null);                graphic.dispose();                return newImage;     }}

文件图片的上传就OK了，接下来是图片的显示

jsp页面中的  src="factory/imageShowSimple?seq=${sessionFactory.factoryLogo}

package controller.factory;import java.io.IOException;import javax.annotation.Resource;import javax.servlet.ServletOutputStream;import javax.servlet.http.HttpServletResponse;import model.factory.base.FactoryImageInfo;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping;import service.factory.FactoryImageInfoService;import controller.base.BaseController;@Controllerpublic class FactoryImageDisplayControll extends BaseController{@Resourceprivate FactoryImageInfoService factoryImageInfoService;@RequestMapping("factory/imageShowSimple")public void imageShowSimple(HttpServletResponse response, String seq){FactoryImageInfo imageInfo = null;ServletOutputStream output = null;try {// 查询图片信息表if(seq != null && !"".equals(seq)){imageInfo = factoryImageInfoService.selectByPrimaryKey(Integer.parseInt(seq));}// 将图片写入画面if(imageInfo != null){output=response.getOutputStream();byte[] imageBytes = imageInfo.getImageBlob();output.write(imageBytes);}} catch (IOException e) {logger.info("操作失败");e.printStackTrace();} catch (Exception e) {logger.info("转化失败");e.printStackTrace();} finally{try {if(output != null){output.close();}} catch (IOException e) {logger.info("数据流关闭异常");e.printStackTrace();}}}}

结束~