@RequestBody接收json对象报415的解决办法

前端请求：

$.ajax({             url: basePath() + "/index/login.do",             type : "post",             data: JSON.stringify(form),             dataType : "json",             contentType : "application/json;charset=utf8",             success: function (data) {                 console.log(data);             },             error: function () {              }         });

后端接收：

@ResponseBody 	@RequestMapping(value = "/login",method = RequestMethod.POST,produces = "application/json;charset=utf8") 	public JSONObject login(@RequestBody LoginVo loginVo){  		JSONObject result = new JSONObject(); 		UsernamePasswordToken token = new UsernamePasswordToken(loginVo.getUsername(),loginVo.getPassword()); 		System.out.println(loginVo.isRememberMe()); 		Subject subject = SecurityUtils.getSubject(); 		subject.login(token); 		if (subject.isAuthenticated()){ 			result.put("result",true); 		}else{ 			result.put("result",false); 		} 		return result; 	}

前端ajax请求，后端使用@RequestBody接收，报出415请求数据格式错误

错误原因：springMVC无法读取ajax设置好的dataType并以对应的方式处理请求头，进而无法处理json数据

解决办法：在maven中引入Jackson相关jar包，并在springMVC的xml中引入相关配置，maven和springMVC的相关代码如下：

maven：

<dependency>             <groupId>com.fasterxml.jackson.core</groupId>             <artifactId>jackson-databind</artifactId>             <version>2.9.6</version>         </dependency>          <dependency>             <groupId>com.fasterxml.jackson.core</groupId>             <artifactId>jackson-core</artifactId>             <version>2.9.6</version>         </dependency>          <dependency>             <groupId>com.fasterxml.jackson.core</groupId>             <artifactId>jackson-annotations</artifactId>             <version>2.9.6</version>         </dependency>

springMVC：

<bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping" />     <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter">         <property name="messageConverters">             <list>                 <!-- 设置返回字符串编码 -->                 <bean class="org.springframework.http.converter.StringHttpMessageConverter">                     <property name = "supportedMediaTypes">                         <list>                             <value>text/html;charset=UTF-8</value>                             <value>application/json;charset=UTF-8</value>                         </list>                     </property>                 </bean>                 <!-- json转换器 -->                 <bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">                     <property name="supportedMediaTypes">                         <list>                             <value>text/html;charset=UTF-8</value>                             <value>application/json;charset=UTF-8</value>                         </list>                     </property>                 </bean>             </list>         </property>     </bean>