Example of sever receiving from form-data sent by Tauri:

package com.qx.project.system.controller;

import com.qx.common.utils.StringUtils;
import com.qx.common.utils.poi.ExcelUtil;
import com.qx.framework.web.controller.BaseController;
import com.qx.framework.web.domain.AjaxResult;
import com.qx.project.api.BaseFileController;
import com.qx.project.system.domain.Demo;
import com.qx.project.system.service.IDemoService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;

import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
* @program: Project
* @description
* @author: kerr
* @create: 2020-08-11 10:45
**/
@RestController
@RequestMapping("/system/demo")
public class DemoController
extends BaseController {
protected final Logger logger = LoggerFactory.getLogger(DemoController.class);
@Autowired
private IDemoService demoService;

@GetMapping("/list")
public Map<String, Object> list(Demo demo) {

Map<String, Object> resultMap = new HashMap();
Integer count = this.demoService.queryCount();
resultMap.put("num" , count);
List<Demo> list = this.demoService.selectDemoList(demo);
if ((list != null) && (list.size() > 0)) {
resultMap.put("demo" , list.get(0));
}
return resultMap;
}

@GetMapping("/export")
public AjaxResult export(Demo demo) {
List<Demo> list = this.demoService.selectDemoList(demo);
ExcelUtil<Demo> util = new ExcelUtil(Demo.class);
return util.exportExcel(list, "demo");
}

@GetMapping("/{id}")
public AjaxResult getInfo(@PathVariable("id") Long id) {
return AjaxResult.success(this.demoService.selectDemoById(id));
}

@PostMapping
public AjaxResult add(Demo demo,@RequestParam("file") MultipartFile file) {
if(file != null){
//需要存储图片
String s = BaseFileController.saveFile(file, 11);
if(StringUtils.isNotBlank(s)){
demo.setImgPath(s);
}
}

demo.setIsQuery("0");
return toAjax(this.demoService.insertDemo(demo));
}

@PutMapping
public AjaxResult edit(@RequestBody Demo demo) {
return toAjax(this.demoService.updateDemo(demo));
}

@DeleteMapping("/{ids}")
public AjaxResult remove(@PathVariable Long[] ids) {
return toAjax(this.demoService.deleteDemoByIds(ids));
}
}