RestTemplate的postForEntity方法传递数组，将集合转换成json字符串

public Object blackList(List<SerSpecialtyLine> serSpecialtyLine) {
    HttpHeaders blackHeaders = new HttpHeaders();
    String token = getTokenId();
    blackHeaders.add("Content-Type", BLOGIC_CONTENT_TYPE);
    blackHeaders.add("x-auth-token", token);
    httpentity<String> blackEntity = new httpentity<>(JSON.toJSONString(serSpecialtyLine), blackHeaders);
    ResponseEntity<Object> tokenResponse = restTemplate.postForEntity("", blackEntity, Object.class);
    return tokenResponse.getBody();
}