你好，可以参考下这个https://developers.weixin.qq.com/community/develop/article/doc/00008ecf79c44895b379cbd145b013

@PostMapping("/imgSecCheck2")
@ApiOperation(value = "图片内容判断", notes = "")
public CommonResponse<OpenIdVO> imgSecCheck2(
        @ApiParam(name = "file", value = "file", required = true) @RequestParam("file") MultipartFile file,
        @ApiParam(name = "access_token", value = "access_token", required = true) @RequestParam String access_token
) throws IOException {
    String url = "https://api.weixin.qq.com/wxa/img_sec_check?access_token=" + access_token;
    log.info("检验图片安全入参：{}", access_token);
    byte[] bytes = file.getBytes();

    HttpHeaders headers2 = new HttpHeaders();
    headers2.set(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_OCTET_STREAM_VALUE);
    ResponseEntity<String> responseEntity = restTemplateHttps.postForEntity(url, new HttpEntity<>(bytes, headers2), String.class);

    log.info("检验图片安全出参：{}", responseEntity);
    HttpStatus statusCode = responseEntity.getStatusCode();
    CommonResponse<OpenIdVO> resp = new CommonResponse<>();
    if (statusCode.value() == 200) {
        String bodyString = responseEntity.getBody();
        JSONObject body = JSONObject.parseObject(bodyString);
        Integer errcode = body.getInteger("errcode");
        String errmsg = body.getString("errmsg");
        if (errcode == 0) {
            resp.setMsg(errmsg);
        } else {
            resp.error(errcode, errmsg);
        }
    } else {
        resp.error(RespErrorCode.SERVICE_ERROR, "图片内容判断失败");
    }
    return resp;
}

解决了就是涉黄图片不好找