SpringBoot项目前端Vue访问后端(图片静态资源) 配置

静态资源配置

@Configuration public class WebMvcConfig extends WebMvcConfigurationSupport {      @Value("${file.save-path}")     private String fileSavePath;       @Override     protected void addResourceHandlers(ResourceHandlerRegistry registry) {          //映射本地文件夹         registry.addResourceHandler("/images/**").addResourceLocations("file:" + fileSavePath);         super.addResourceHandlers(registry);     } }

 application.yml

file:    save-path: D:\qr_code_duct\qr_code_back\images\

详细说明 

由于要展示的图片可能比较大，从后端数据库中获取base64编码明显不可能（base64大部分适用于KB级别的），数据库正常来说也只存放图片的地址，而不是图片的内容。

CREATE TABLE `card_record_image` (   `id` int(11) NOT NULL AUTO_INCREMENT,   `card_record_id` int(11) DEFAULT NULL,   `create_time` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,   `operator_id` int(11) DEFAULT NULL,   `image_url` varchar(255) DEFAULT NULL,   PRIMARY KEY (`id`),   KEY `card_record_id` (`card_record_id`),   CONSTRAINT `card_record_image_ibfk_1` FOREIGN KEY (`card_record_id`) REFERENCES `card_record` (`id`) ) ENGINE=InnoDB AUTO_INCREMENT=32 DEFAULT CHARSET=utf8mb4;

    public RespondDto saveCardRecord(RequestData requestData) {         // 解析前端传递的数据, 创建CardRecord对象并保存到数据库         CardRecord cardRecord = new CardRecord();         cardRecord.setProductId(requestData.getProductId());         cardRecord.setCurrentLocation(requestData.getCurrentLocation());         cardRecord.setDescription(requestData.getDesc());         cardRecord.setCreateTime(new Date());         cardRecordMapper.insert(cardRecord);          // 保存卡记录图片         List<String> imageList = requestData.getImageList();         List<String> imageUrlList = new ArrayList<>();          for (String base64Image : imageList) {             // 移除可能的前缀信息（如"data:image/jpeg;base64,"），只保留base64编码部分             String base64Data = base64Image.replaceAll("data:image/.*;base64,", "");             // 从 base64 解码成二进制数据             byte[] imageBytes = Base64.getDecoder().decode(base64Data);             // 生成文件名，这里可以根据需要生成唯一的文件名             String fileName = "image_" + UUID.randomUUID() + ".png";              // 构建文件保存路径 //            String fileSavePath = "D:" + File.separator + "qr_code_duct" + File.separator + "qr_code_back" + File.separator +"images" +File.separator +fileName;              String fileSavePath = fileProperties.getSavePath() + fileName;              try (FileOutputStream fos = new FileOutputStream(fileSavePath)) {                 fos.write(imageBytes);                 // 替换为实际的域名和路径                 imageUrlList.add("/images/" + fileName);             } catch (IOException e) {                 throw new RuntimeException(e);             }              // 保存图片信息到数据库             CardRecordImage cardRecordImage = new CardRecordImage();             cardRecordImage.setCardRecordId(Math.toIntExact(cardRecord.getId()));             // 替换为实际的域名和路径             cardRecordImage.setImageUrl("/images/" + fileName);             cardRecordImage.setCreateTime(new Date());             cardRecordImageMapper.insert(cardRecordImage);         }         return new RespondDto(ResultCode.OK, "保存成功！！");     }

<template>   <div>     <div class="return-button-container">       <el-button size="small"  @click="goBack">返回</el-button>     </div>     <el-table :data="cardRecords" style="width: 100%">       <el-table-column prop="productId" label="板卡编号"></el-table-column>       <el-table-column prop="currentLocation" label="记录人"></el-table-column>       <el-table-column label="图片">         <template slot-scope="scope">           <div v-if="Array.isArray(scope.row.images)">             <div v-for="(image, index) in scope.row.images" :key="index">               <img :src="getImageUrl(image.imageUrl)" style="max-width: 100px; max-height: 100px">             </div>           </div>         </template>       </el-table-column>       <el-table-column prop="description" label="说明备注"></el-table-column>     </el-table>   </div> </template>  <script> export default {   data() {     return {       cardRecords: []     };   },   created() {     this.getAllCardRecordsWithImages();   },   methods: {     goBack() {       window.location.href = 'http://localhost:8889/login'     },     getImageUrl(imageUrl) {       return 'http://192.168.**.**:9999' + imageUrl;     },     getAllCardRecordsWithImages() {       this.$request.get('/cardRecord/allWithImages')           .then(res => {             console.log('Response data:', res.data);             if (Array.isArray(res.data) && res.data.length > 0) {               this.cardRecords = res.data.map(item => this.parseData(item));             } else {               console.error('Error fetching card records: Data is empty');             }           })           .catch(error => {             console.error('Error fetching card records:', error);           });     },     parseData(data) {       return {         productId: data.productId,         currentLocation: data.currentLocation,         images: Array.isArray(data.images) ? data.images.map(image => ({           id: image.id,           imageUrl: image.imageUrl         })) : [],         description: data.description       };     }   } }; </script> <style scoped> .return-button-container {   position: absolute;   top: 16px;   right: 16px; } </style>

注意事项

1、D:\qr_code_duct\qr_code_back\images\ 这个路径一定要是项目下的路径，不然静态资源配置将会找不到。

2、D:\qr_code_duct\qr_code_back\images\这个路径最后结束一定要加\ ，不然资源也会找不到。