Detailed introduction to Json data format conversion in SpringMVC

This article mainly introduces the relevant knowledge of data format conversion in Json in SpringMVC. Has very good reference value. Let’s take a look with the editor below

1 @RequestBody

##Function:

String), and convert the read content into json and xml through the HttpMessageConverter interface provided by springmvc. Data in other formats and bound to the parameters of the controller method.

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This example application ：@RequestBody annotation implements receiving json data of http request and converting json data into java

Function: This annotation is used to convert the object returned by the Controller method into data in the specified format through the HttpMessageConverter interface, such as : json, xml, etc., respond to the client through Response

This example applies:@ResponseBody annotation realizes the object conversion returned by the controller method Respond to json to the client

Springmvc By default, Map

1) If the annotation driver

　　<!--注解适配器 -->
  <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter">
    <property name="messageConverters">
    <list>
    <bean class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter"></bean>
    </list>
    </property>
  </bean>

 @RequestMapping("/testJson.action")
  @ResponseBody
  public Items testJson (@RequestBody Items items) {
    return items;
  }

function jsonTest () {
      $.ajax({
        type:"post",
url:"${pageContext.request.contextPath}/item/testJson.action",
contentType:"application/json;charset=utf-8",
        data:'{"name":"测试商品","price":99.9}',
        success:function (data) {
          alert(data.name);
        }
      });
    }