出现以下告警信息

 Statement lambda can be replaced with expression lambda less... (Ctrl+F1) 
This inspection reports lambda expressions with code block bodies when expression-style bodies can be used

将

 List<StudentDetailDto> studentDetailDtoList = linkedHashMapList.stream().map(map -> {
             return JSONObject.parseObject(JSONObject.toJSONString(map), StudentDetailDto.class);
        }).collect(Collectors.toList());

改为以下

 List<StudentDetailDto> studentDetailDtoList = linkedHashMapList.stream().map(map -> 
             JSONObject.parseObject(JSONObject.toJSONString(map), StudentDetailDto.class)
        ).collect(Collectors.toList());

即将 

stream().map(map -> {
             return express;
        })

改为

stream().map(map -> 
              express
        )