springboot+spring data jpa实现新增及批量新增方式

@PostMapping(value = "/add")
    @apiOperation(value = "新增功能", notes = "新增功能")
    public ResultVo<?> addInfo(@RequestBody @Valid SysAdminUser adminUser){
        return  demoService.addInfo(adminUser);
    }

public  ResultVo<?> addInfo(SysAdminUser adminUser){
        SysAdminUser sysAdminUser = modelMapper.map(adminUser, SysAdminUser.class);
        demoRepository.save(sysAdminUser);
        return ResultVo.success();
    }

 @PostMapping(value = "/batch/add")
      @ApiOperation(value = "新增功能", notes = "批量新增")
          public Map<String,Object> addListModelParams(@RequestBody List<SysAdminUser> list) {
          int listsize = list.size();
          Map<String,Object> resultMap = new HashMap<>();
          if (listsize == 0) {
              throw new RuntimeException("集合为空！") ;
          } else {
              //批量存储的集合
              List<SysAdminUser> data = new ArrayList<SysAdminUser>();
              //批量存储
              for (SysAdminUser s : list) {
                  if(data.size() == listsize/10) {
                      demoService.save(data);
                      data.clear();
                  }
                  data.add(s);
              }
              //将剩下的数据也导入
              if(!data.isEmpty()) {
                  demoService.save(data);
                  resultMap.put("code", "0000");
                  resultMap.put("message", "批量添加成功");
              }
          }
          return resultMap;
      }

public void   save(List<SysAdminUser> list) {
        demoRepository.saveAll(list);
    }

@OneToMany(targetEntity = Role.class, cascade = CascadeType.ALL, fetch = FetchType.EAGER) 
@JoinTable(name = "sys_user_role", joinColumns = @JoinColumn(name = "user_id", referencedColumnName = "id"), inverseJoinColumns = @JoinColumn(name = "role_id", referencedColumnName = "id", unique = true)) 
private Set<Role> roles = new HashSet<>();