Spring MVC @RequestBody不能与jQuery Ajax一起使用？

Question

这是我的ajax请求

var dataModel = {name1:"value1", name2:"value2"};

$.ajax({
              url: "/testURL",
              type: "POST",
              async: false,
              contentType: "application/json",
              data: dataModel,
              success: function(response) {

              }

    })

这是我从Spring XML的相关片段

<annotation-driven>
        <!-- Message converters are added to use custom object mapper in  MappingJackson2HttpMessageConverter.
            StringHttpMessageConverter is required to avoid MappingJackson2HttpMessageConverter from converting a string into json.
        -->
        <message-converters>
            <beans:bean
                class="org.springframework.http.converter.StringHttpMessageConverter">
            </beans:bean>
            <beans:bean
                class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
                <beans:property name="objectMapper" ref="jacksonObjectMapper"/>
            </beans:bean>
        </message-converters>
    </annotation-driven>

这是我的控制器映射

    @RequestMapping(value = "/testURL", method = { RequestMethod.POST })
    public String add(HttpServletRequest request, @RequestBody CustomObject customObject) throws Exception {}

但是我的请求甚至没有到达控制器。 一旦删除@RequestBody CustomObject customObject它就会起作用。 但是我想用@RequestBody将json请求映射到CustomObject，这没有发生。 不知道我在这里想念什么吗？

实际上，当我检查request.getParameterMap()它显示为空，但是一旦删除contentType: "application/json"我看到参数映射已填充，但仍然低于错误

`The server refused this request because the request entity is in a format not supported by the requested resource for the requested method`

这是我的CustomObject定义

public class CustomObject implements Serializable {

private static final long serialVersionUID = 1L;
private String name1;
private String name2;

//getters and setters
}

已经通过JQuery，Spring MVC @RequestBody和JSON-使其可以一起使用但无济于事

Answer 1

实际上，当我检查request.getParameterMap（）时，它显示为空，但是一旦我删除contentType：“ application / json”

没错 原因与contentType: "application/json" jQuery在内部将数据转换为字符串。 因此没有请求参数。 如果没有contentType: "application/json" ，则默认的contentType' is form data . So data sent is converted to request parameters based on delimiters contentType' is form data . So data sent is converted to request parameters based on delimiters ＆ and =` contentType' is form data . So data sent is converted to request parameters based on delimiters

还尝试data: JSON.stringify(dataModel) ，它应该可以工作