多图片上传存储到数据库（vue+springboot+elementUI）

在Vue.js前端，使用Element UI的<el-upload>组件来上传图片，然后将图片转换为Base64字符串发送到后端。后端使用Spring Boot接收Base64字符串，并将其存储到数据库中。

前端代码（Vue + Element UI）:

<template>
  <el-upload
    action="#"
    list-type="picture-card"
    :on-change="handleChange"
    :on-remove="handleRemove"
    :file-list="fileList"
    multiple>
    <i class="el-icon-plus"></i>
  </el-upload>
  <el-button @click="uploadImages">上传图片</el-button>
</template>
 
<script>
export default {
  data() {
    return {
      fileList: [],
    };
  },
  methods: {
    handleChange(file, fileList) {
      this.fileList = fileList;
    },
    handleRemove(file, fileList) {
      this.fileList = fileList;
    },
    uploadImages() {
      const images = this.fileList.map(file => {
        return this.getBase64(file.raw);
      });
      Promise.all(images).then(base64Images => {
        // 发送base64Images到后端
        axios.post('/upload', { images: base64Images }).then(response => {
          console.log(response.data);
        });
      });
    },
    getBase64(file) {
      return new Promise((resolve, reject) => {
        const reader = new FileReader();
        reader.onload = e => resolve(e.target.result);
        reader.onerror = e => reject(e);
        reader.readAsDataURL(file);
      });
    },
  },
};
</script>

后端代码（Spring Boot）:

import org.springframework.web.bind.annotation.*;
import org.springframework.http.ResponseEntity;
import org.springframework.jdbc.core.JdbcTemplate;
import java.util.List;
 
@RestController
public class ImageUploadController {
 
    private final JdbcTemplate jdbcTemplate;
 
    public ImageUploadController(JdbcTemplate jdbcTemplate) {
        this.jdbcTemplate = jdbcTemplate;
    }
 
    @PostMapping("/upload")
    public ResponseEntity<?> uploadImages(@RequestBody List<String> images) {
        // 存储Base64字符串到数据库
        for (String image : images) {
            String sql = "INSERT INTO images (image) VALUES (?)";
            jdbcTemplate.update(sql, image);
        }
        return ResponseEntity.ok("Images uploaded successfull