小编use*_*507的帖子

我有以下代码:

public class StudentController extends BaseController {

@RequestMapping(value = "/student/edit", method = RequestMethod.POST)
    public String submitForm(@Valid @ModelAttribute(MODEL_ATTRIBUTE_STUDENT) StudentDTO edited,
                                         BindingResult bindingResult, RedirectAttributes attributes) {
        if (bindingResult.hasErrors()) {
            return STUDENT_EDIT_FORM_VIEW;
        }

        //some logic...
    }

@InitBinder
public void initBinder(WebDataBinder binder) {
    SimpleDateFormat dateFormat = new SimpleDateFormat("MM/dd/yyyy");
    dateFormat.setLenient(false);

    // true passed to CustomDateEditor constructor means convert empty String to null
    binder.registerCustomEditor(Date.class, new CustomDateEditor(dateFormat, true));
}
}

public class BaseController {
    @ExceptionHandler(Exception.class)
    protected ModelAndView handleAllException(Exception ex) {
        Long errorId = System.currentTimeMillis() + RandomInteger.generate(1, Integer.MAX_VALUE); …

当我在选择字段中使用@Query注释时,我没有得到实体对象.我怎样才能获得实体对象？

public interface CreditCenterRepository extends JpaRepository<CreditCenter, Long> {
    @Query("SELECT CC.id, CC.loanId, CC.clientId FROM CreditCenter CC")
    List<CreditCenter> findAllIds();
}

当我从我的控制器调用此方法时,它不会抛出任何错误,但是,当我尝试迭代它时抛出classcastexception

List<CreditCenter> objects = findAllIds();
for (CreditCenter cc : objects) { //This line throws ClassCastException
    //some logic
}

我在模式中定义了以下字段。当我使用 avro 插件生成 java 对象时，我得到定义为“java.util.List”的同义词。在某些情况下我是否可以强制插件生成“java.util.Set”？

               {
                "name" : "synonyms",
                "type" : {
                  "type" : "array",
                  "items" : "string",
                  "java-class" : "java.util.Set"
                }

这是生成的类的相关部分。不知道为什么会生成 @deprecated 注释..！

@Deprecated public java.util.List<java.lang.CharSequence> synonyms;

撞..