java - 不匹配预期类型 spring 框架错误

Question

我有一个基于 spring 框架的服务我想知道为什么我在向我的服务发送整数时出现此异常

ERROR [io.undertow.request] (default task-13) UT005023: Exception handling request to /updateUserAnswer/11: org.lightadmin.core.view.exceptions.BadRequestException: org.springframework.web.util.NestedServletException: Request processing failed; nested exception is java.lang.IllegalArgumentException: Parameter value [11] did not match expected type [java.lang.Integer (n/a)]

这是我的 Controller

@RequestMapping(value = "/updateUserAnswers/{userId}", method = RequestMethod.PUT)
    public Response updateUserAnswer(@PathVariable("userId") Long userId,
            @RequestBody @Valid UserAnswer userAnswer) {

        userAnswerService.updateUserAnswer(userId, userAnswer);

        HashMap<String, Object> response = new HashMap<>();
        response.put("messages", null);
        response.put("success", Boolean.valueOf(true));
        return Response.instance().friendlyName("user-answer-updated").object(response).statusCode(HttpStatus.OK);
    }

这是我的服务:

public void updateUserAnswer(Long userId,UserAnswer userAnswer) {

    List<UserAnswer> currentUserAnswer = userAnswerRepo.getUserAnswers(userId, userAnswer.getAnswerId().longValue(),null);
    currentUserAnswer.get(0).setLabel(userAnswer.getLabel());       

    List<UserAnswerField> fieldsList =  new ArrayList<UserAnswerField>();


    for (UserAnswerField userAnswerField : userAnswer.getAnswerFields()) {
        UserAnswerField currentUserAnswerField = userAnswerFieldRepo.getUserAnswerField(userAnswerField.getfieldId());
        if (currentUserAnswerField != null) {
            currentUserAnswerField.setfield(userAnswerField.getfield());
            currentUserAnswerField.setTypeId(userAnswerField.getTypeId());
            fieldsList.add(currentUserAnswerField);
            //userAnswerFieldRepo.save(currentUserAnswerField);
        }           
    }   
    currentUserAnswer.get(0).setAnswerFields(fieldsList);

    userAnswerRepo.save(currentUserAnswer.get(0));
}   

存储库:

public List<UserAnswer> getUserAnswers(Long userId,Long answerId ,String pageType) {
    try {
        String qlString = ""
                + " Select sf from UserAnswer sf "
                + " where "
                + " sf.userId = :userId ";
        if(pageType != null){
            qlString+= " and  sf.type=:type ";
        }
        if(answerId != null){
            qlString+= " and sf.answerId=:answerId ";
        }
        qlString+=" order by sf.insertionDate";

        Query query = getEntityManagerFactory().createQuery(qlString);
        query.setParameter("userId", userId);
        if(pageType != null){
            query.setParameter("type", pageType);
        }
        if(answerId != null){
            query.setParameter("answerId", answerId);
        }
        return (List<UserAnswer>) query.getResultList();
    } catch (javax.persistence.NoResultException e) {
        return null;
    }
}

你能帮帮我吗？提前致谢

Answer 1

错误发生在 query.setParameter("userId", userId);，因为当 hqlQuery 需要 Integer 时，您试图设置 Long。

解决方案:

• 将类型 Long -> Integer 从 controller 更改为 Repository

• 使用 .intValue()(与其说是解决方案，不如说是快速修复)

• 将实体中的 ID 更改为 Long 类型。