vue和java图片上传

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所属分类:Web前端
摘要

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前言


1、流程及图

vue和java图片上传

2、前端:

1.表单提交

	                <!-- 企业简称 -->                 <el-dialog :title="dialogTitle" :visible.sync="dialogVisible" width="800px">                     <el-form :model="editEntity" ref="editEntity"                              label-width="80px"  class="demo-ruleForm" >                         <el-row>                             <el-col :span="2">                                 &nbsp;                             </el-col>                             <el-col :span="12">                                 &nbsp;&nbsp;&nbsp;                             <el-button type="danger" disabled>{{editEntity.compayName}}</el-button>                             </el-col>                         </el-row>                         <el-row>                             <el-col :span="12">                                 <el-form-item label="企业名称" prop="name">                                     <el-input type="text" placeholder="请输入企业名称,最多输入十个字"                                               v-model="editEntity.name"></el-input>                                 </el-form-item>                             </el-col>                                                       <el-col :span="12">                                 <el-form-item label="A类单位" prop="invoiceCompanyidA">                                     <el-select size="mini" v-model="editEntity.invoiceCompanyidA" >                                         <el-option v-for="invoiceCompanyItem in invoiceCompanyOptionsA" :key="invoiceCompanyItem.id"                                                    :label="invoiceCompanyItem.name" :value="invoiceCompanyItem.id"></el-option>                                     </el-select>                                 </el-form-item>                             </el-col>                         </el-row>                         <el-row>                                                        <el-col :span="12">                                 <el-form-item label="A类公章" prop="taxImageUrl">                                     <el-upload class="avatar-uploader" :action="uploadImageUrl"                                                :multiple="false" accept="image/*" :limit="1024" :auto-upload="true"                                                :show-file-list="false" :on-success="handleUploadSuccess1">                                         <img v-if="editEntity.taxImageUrl"                                              :src="editEntity.taxImageUrl" class="avatar">                                         <i v-else class="el-icon-plus avatar-uploader-icon"></i>                                     </el-upload>                                 </el-form-item>                             </el-col>                         </el-row>                     </el-form>                     <div slot="footer" class="dialog-footer">                         <el-button type="primary" @click="save()">确定</el-button>                         <el-button @click="dialogVisible = false">取消</el-button>                     </div>                  </el-dialog>  

2.上传图片及相关方法

            handleUploadSuccess: function (res) {// 处理上传成功事件                 if (res.success) {// 成功                     this.editAbbreviationFormEntity.imageUrl = res.data;                 } else {// 失败                     this.$message.error(res.message);                 }             },    

3、配置文件application.xml

	<!-- 本地文件服务 --> 	<bean class="com.cherry.framework.service.impl.LocalFileServiceImpl"> 		<property name="fileServerSavepath" value="${file_server_savepath}" /> 		<property name="fileServerHttppath" value="${file_server_httppath}" /> 	</bean>  

3、后端

1.控制器
 	/** 	 * 文件目录:图片目录 	 */ 	public static final String FILE_DIR_CACHET = "cachet";  	/** 	 * 上传图片 	 * @param file 	 * @return 	 */ 	@RequestMapping("/uploadImage") 	@ResponseBody 	public Result uploadImage(MultipartFile file){ 		return  fileService.uploadFile(file, Constants.FILE_DIR_CACHET); 	}  
2.上传接口
 	private String fileServerSavepath;  	private String fileServerHttppath;  	public String getFileServerSavepath() { 		return fileServerSavepath; 	}  	public void setFileServerSavepath(String fileServerSavepath) { 		this.fileServerSavepath = fileServerSavepath; 	}  	public String getFileServerHttppath() { 		return fileServerHttppath; 	}  	public void setFileServerHttppath(String fileServerHttppath) { 		this.fileServerHttppath = fileServerHttppath; 	}  	/** 	 * 上传到本地服务器 	 */ 	public Result uploadFile(MultipartFile file, String dirName) { 		String filePath = dirName + "/" + UUID.randomUUID().toString(); 		try { 			File dest = new File(fileServerSavepath, filePath); 			if (!dest.getParentFile().exists()) { 				dest.getParentFile().mkdirs(); 			} 			file.transferTo(dest); 		} catch (IllegalStateException | IOException e) { 			String errorMsg = "上传文件[" + file.getOriginalFilename() + "]失败!"; 			logger.error(errorMsg, e); 			return Results.uploadError(); 		} 		return Results.uploadOk(fileServerHttppath + filePath); 	}  	/** 	 * 上传到七牛云 	 */ 	public Result uploadFileQiniu(MultipartFile file) { 	String uuid = UUID.randomUUID().toString(); 	InputStream is = null; 	try { 		is = file.getInputStream(); 		String imgUrl = QiniuUpload.uploadFile(is , uuid); 		return Results.uploadOk(imgUrl); 	}catch (Exception e){ 		e.printStackTrace(); 	}finally { 		try { 			if (is != null) { 				is.close(); 			} 		}catch (Exception e) { 			e.printStackTrace(); 		} 	} 	return Results.error(); }  	/** 	 * 按指定大小压缩后上传到七牛云 	 */ 	public Result uploadImageResize(MultipartFile file, String dirName, double destFileSize) { 		String uuid = UUID.randomUUID().toString(); 		String filePath = dirName + "/" + uuid; 		try { 			File dest = new File(fileServerSavepath, filePath); 			if (!dest.getParentFile().exists()) { 				dest.getParentFile().mkdirs(); 			} 			file.transferTo(dest); 			if((Double.isNaN(destFileSize)) || "".equals(destFileSize)){ 				destFileSize = 15.0; 			} 			String imgUrl = QiniuUpload.uploadFile(ImageUtil.commpressImageRatio(dest,destFileSize), uuid); 			return Results.uploadOk(imgUrl); 		} catch (IllegalStateException | IOException e) { 			String errorMsg = "上传文件[" + file.getOriginalFilename() + "]失败!"; 			logger.error(errorMsg, e); 			return Results.uploadError(); 		} 	}  
3.七牛云上传
   /**      * 上传文件到七牛云(文件流)      * @param is 文件流      * @param key 文件名称      * @return 云文件访问路径      */     public static String uploadFile(InputStream is, String key){         //构造一个带指定 Region 对象的配置类         Configuration cfg = new Configuration(qiniuConfig.getRegion());         UploadManager uploadManager = new UploadManager(cfg);         try {             Response response = uploadManager.put(is, key, getAccessToken(), null, null);             //解析上传成功的结果             DefaultPutRet putRet = new Gson().fromJson(response.bodyString(), DefaultPutRet.class);             return qiniuConfig.getCdnPath() + putRet.key;         } catch (QiniuException ex) {             ex.printStackTrace();         }         return null;     } 
4.递归压缩图片
     /**      * 按尺寸、精度及其他条件比例缩放      * @param file      * @param destFileSize 指定图片大小(单位:kb)      * @throws IOException      */     public static InputStream commpressImageRatio(File file,double destFileSize) throws IOException {         final int byteLenght = 1024; // 字节长度         final double minRatio = 0.9; // 压缩比率         double ratio = destFileSize/((double) file.length()/byteLenght);         if(ratio >= minRatio){             return new FileInputStream(file);         }else {             Thumbnails.of(file).scale(0.9).outputQuality(0.9).outputFormat("jpg").toFile(file);             String path = file.getAbsolutePath();             int i = path.lastIndexOf(".")+1;             String suffix  = path.substring(i);             if(!suffix.equals("jpg")){                 file = new File(file.getAbsolutePath()+".jpg");                 File file1 = new File(path);                 file1.delete();             }             double ratio1 =  destFileSize/((double) file.length()/byteLenght);             if(ratio1 < minRatio){                 commpressImageRatio(file,destFileSize);             }             return new FileInputStream(file);         }     } 

4、上传如图

vue和java图片上传
vue和java图片上传


随心所往,看见未来。Follow your heart,see night!

欢迎点赞、关注、留言,一起学习、交流!