Question

我正在发送以下JSON的AJAX请求：

{"name":"somebody","vehicles":["car","trunk"],"_vehicles":"on"}

注意:( _vehicles属性来自表单：复选框）

它绑定的bean就像这样简单：

public class Person{

    private String name;

    private List<String> vehicles;

在访问Spring Controller之前，抛出以下异常：

org.springframework.http.converter.HttpMessageNotReadableException: Could not read document: Can not deserialize instance of java.lang.String out of START_ARRAY token
 at [Source: java.io.PushbackInputStream@e36df534; line: 1, column: 117] (through reference chain: java.util.LinkedHashMap["vehicles"]); nested exception is com.fasterxml.jackson.databind.JsonMappingException: Can not deserialize instance of java.lang.String out of START_ARRAY token
 at [Source: java.io.PushbackInputStream@e36df534; line: 1, column: 117] (through reference chain: java.util.LinkedHashMap["vehicles"])

控制器：

@RequestMapping(value="/new", method=RequestMethod.POST, consumes="application/json", produces="application/json")
@ResponseBody
public Person saveNewPerson(@RequestBody Person person){

依赖关系：

Spring deps 4.2.4.RELEASE
jackson-annotations / core / databind 2.6.4
......（其他人由Maven解决）

web-mvc-config摘录：

<bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter">
    <property name="messageConverters">
        <list>
            <!-- Default converters -->
            <bean class="org.springframework.http.converter.StringHttpMessageConverter" />
            <bean class="org.springframework.http.converter.FormHttpMessageConverter" />
            <bean class="org.springframework.http.converter.ByteArrayHttpMessageConverter" />
            <bean class="org.springframework.http.converter.xml.SourceHttpMessageConverter" />
            <!-- Jackson 2 -->
            <bean class="org.springframework.http.converter.ResourceHttpMessageConverter" />
            <ref bean="mappingJackson2HttpMessageConverter"/>

        </list>
    </property>
</bean>

<bean id="mappingJackson2HttpMessageConverter" class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter" />

为什么不能反序列化？

注意：如果我没有发送车辆部件，则Person对象的反序列化工作正常。

Spring MVC - JSON反序列化错误 - 无法从START_ARRAY标记

0 个答案: