1、导包 !-- https://mvnrepository.com/artifact/com.alibaba/fastjson -- dependency groupIdcom.alibaba/groupId artifactIdfastjson/artifactId version1.2.58/version /dependency 2、配置文件 mvc:annotation-driven mvc:message-converters re
          1、导包
<!-- https://mvnrepository.com/artifact/com.alibaba/fastjson --> <dependency> <groupId>com.alibaba</groupId> <artifactId>fastjson</artifactId> <version>1.2.58</version> </dependency>
2、配置文件
 <mvc:annotation-driven>
    <mvc:message-converters register-defaults="true">
      <bean class="com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter">
        <property name="supportedMediaTypes">
          <list>
            <value>text/html;charset=UTF-8</value>
            <value>application/json</value>
            <value>application/xml;charset=UTF-8</value>
          </list>
        </property>
      </bean>
    </mvc:message-converters>
  </mvc:annotation-driven>
3、jsp代码
<script>
  $(function () {
    $.ajax({
      url:"${pageContext.servletContext.contextPath}/user/json",
      data:JSON.stringify({username:"tom"}),//JSON.stringify()必须有,否则只会当做表单的格式提交
      dataType:"json",
      type:"post",
      contentType:"application/json;charset=utf-8",//如果想以json格式把数据提交到后台的话,这个必须有,否则只会当做表单提交
      success:function (data) {
        alert(data.username);
      }
    });
  });
</script>
4、控制器代码
@RequestMapping("/json")
  public @ResponseBody User jsonToObject(@RequestBody User user){
    System.out.println("--------");
    System.out.println(user);
    return user;
  }
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持易盾网络。
