Блог

Класс контроллера

 @RestController
@RequestMapping("/api")
public class BeanValidationController {

    public static final Logger LOGGER = LoggerFactory.getLogger(BeanValidationController.class);

    @PostMapping("/arrayTest")
    public void testArray(@RequestBody List<String> testArray) {
        LOGGER.info("Array Data {}", testArray);
    }
}
  

Тело запроса сведений

 {
    "testArray" : ["1234", "1235"]
}
  

URL-АДРЕС ПУБЛИКАЦИИ

 http://localhost:8080/api/arrayTest
  

Но получаю ошибку ниже

 {
    "timestamp": "2020-09-21T15:34:41.367 00:00",
    "status": 400,
    "error": "Bad Request",
    "trace": "org.springframework.http.converter.HttpMessageNotReadableException: JSON parse error: Cannot deserialize instance of `[Ljava.lang.String;` out of START_OBJECT token; nested exception is com.fasterxml.jackson.databind.exc.MismatchedInputException: Cannot deserialize instance of `[Ljava.lang.String;` out of START_OBJECT tokenn at [Source: (PushbackInputStream); line: 1, column: 1]rntat org.springframework.http.converter.json.AbstractJackson2HttpMessageConverter.readJavaType(AbstractJackson2HttpMessageConverter.java:275)rntat org.springframework.http.converter.json.AbstractJackson2HttpMessageConverter.read(AbstractJackson2HttpMessageConverter.java:257)rntat org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodArgumentResolver.readWithMessageConverters(AbstractMessageConverterMethodArgumentResolver.java:205)rntat org.springframework.web.servlet.mvc.method.annotation.RequestResponseBodyMethodProcessor.readWithMessageConverters(RequestResponseBodyMethodProcessor.java:158)rntat org.springframework.web.servlet.mvc.method.annotation.RequestResponseBodyMethodProcessor.resolveArgument(RequestResponseBodyMethodProcessor.java:131)rntat org.springframework.web.method.support.HandlerMethodArgumentResolverComposite.resolveArgument(HandlerMethodArgumentResolverComposite.java:121)rntat org.springframework.web.method.support.InvocableHandlerMethod.getMethodArgumentValues(InvocableHandlerMethod.java:167)rntat org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:134)rntat org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:105)rntat org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:879)rntat org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:793)rntat org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)rntat org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1040)rntat org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943)rntat org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006)rntat org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909)rntat javax.servlet.http.HttpServlet.service(HttpServlet.java:660)rntat org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883)rntat javax.servlet.http.HttpServlet.service(HttpServlet.java:741)rntat org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)rntat org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)rntat org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)rntat org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)rntat org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)rntat org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100)rntat org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)rntat org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)rntat org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)rntat org.spri
  

Тело вашего запроса представляет собой объект JSON, содержащий массив строк, а не массив строк.

Ваш код будет работать, если вы измените тело запроса на простое ["1234", "1235"] .