SpringBoot@RequestBody报错('application/xwwwformurlencoded;charset=UTF8'notsupported)
第一种:转https://blog.csdn.net/chenfei2341/article/details/83652586
在Spring boot 中使用 @RequestBody 会报错,提示错误 Content type 'application/x-www-form-urlencoded;charset=UTF-8' not supported
,代码如下:
@RequestMapping(value = "/act/service/model/{modelId}/save", method = RequestMethod.POST)publicvoid saveModel(@PathVariable String modelId, @RequestBody MultiValueMap<String, String> values) {// 具体代码 }
这个在传统 spring MVC 中是有效的,但是在 Spring boot 中会报错。
传统是 Spring MVC 有效,是因为有 <mvc:annotation-driven> 注解,查资料,<mvc:annotation-driven> 注解配置了如下的内容
spring 3.1 版本:
<!-- 注解请求映射 --> <bean class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping">
<property name="interceptors">
<list>
<ref bean="logNDCInteceptor"/> <!-- 日志拦截器,这是你自定义的拦截器 -->
</list>
</property>
</bean>
<bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
<property name="messageConverters">
<list>
<ref bean="byteArray_hmc" />
<ref bean="string_hmc" />
<ref bean="resource_hmc" />
<ref bean="source_hmc" />
<ref bean="xmlAwareForm_hmc" />
<ref bean="jaxb2RootElement_hmc" />
<ref bean="jackson_hmc" />
</list>
</property>
</bean>
<bean id="byteArray_hmc" class="org.springframework.http.converter.ByteArrayHttpMessageConverter" /><!-- 处理.. -->
<bean id="string_hmc" class="org.springframework.http.converter.StringHttpMessageConverter" /><!-- 处理.. -->
<bean id="resource_hmc" class="org.springframework.http.converter.ResourceHttpMessageConverter" /><!-- 处理.. -->
<bean id="source_hmc" class="org.springframework.http.converter.xml.SourceHttpMessageConverter" /><!-- 处理.. -->
<bean id="xmlAwareForm_hmc" class="org.springframework.http.converter.xml.XmlAwareFormHttpMessageConverter" /><!-- 处理.. -->
<bean id="jaxb2RootElement_hmc" class="org.springframework.http.converter.xml.Jaxb2RootElementHttpMessageConverter" /><!-- 处理.. -->
<bean id="jackson_hmc" class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter" /><!-- 处理json-->
转载:http://elf8848.iteye.com/blog/875830
这个找到的资料是 3.1 的,但是women可以看到,最后一个配置了 Jackson 的 json 处理程序,在更新的版本中,AnnotationMethodHandlerAdapter 已经废弃,使用的是 RequestMappingHandlerAdapter,看下 RequestMappingHandlerAdapter 的源码。
public RequestMappingHandlerAdapter() { StringHttpMessageConverter stringHttpMessageConverter
= new StringHttpMessageConverter(); stringHttpMessageConverter.setWriteAcceptCharset(
false); // see SPR-7316this.messageConverters = new ArrayList<HttpMessageConverter<?>>(4);
this.messageConverters.add(new ByteArrayHttpMessageConverter());
this.messageConverters.add(stringHttpMessageConverter);
this.messageConverters.add(new SourceHttpMessageConverter<Source>());
this.messageConverters.add(new AllEncompassingFormHttpMessageConverter());
}
这里面没有了 json 的处理过程,我们把它加上
@EnableWebMvc@Configuration
publicclass WebMvcConfig extends WebMvcConfigurerAdapter { @Bean
public RequestMappingHandlerAdapter requestMappingHandlerAdapter() { RequestMappingHandlerAdapter adapter
= new RequestMappingHandlerAdapter(); List
<HttpMessageConverter<?>> converters = adapter.getMessageConverters(); MappingJackson2HttpMessageConverter jsonConverter
= new MappingJackson2HttpMessageConverter(); List
<MediaType> supportedMediaTypes = new ArrayList<MediaType>(); MediaType textMedia
= new MediaType(MediaType.TEXT_PLAIN, Charset.forName("UTF-8")); supportedMediaTypes.add(textMedia);
MediaType jsonMedia
= new MediaType(MediaType.APPLICATION_JSON, Charset.forName("UTF-8")); supportedMediaTypes.add(jsonMedia);jsonConverter.setSupportedMediaTypes(supportedMediaTypes);
converters.add(jsonConverter);
adapter.setMessageConverters(converters);
return adapter; }
}
成功,报错消除,正确获取到了参数
第二种 转自https://blog.csdn.net/justry_deng/article/details/99875548
SpringBoot自定义参数解析器,使被@RequestBody标注的参数能额外接收Content-Type为application/x-www-form-urlencoded的请求
基础知识介绍:
在SpringBoot里,若Controller层里方法的形参前使用了@RequestBody注解,那么该参数将会被RequestResponseBodyMethodProcessor解析器进行解析,若此时Content-Type为application/x-www-form-urlencoded,那么会报Unsupported Media Type错误,这就要求:请求的Content-Type必须为application/json了。
一般的,若Controller层里方法的形参前(不管有没有其它注解,只要)没使用@RequestBody注解,那么该参数几乎都是符合ServletModelAttributeMethodProcessor解析器要求的,进而会使用ServletModelAttributeMethodProcessor解析器进行解析;当请求的Content-Type为application/x-www-form-urlencoded时,几乎用的都是ServletModelAttributeMethodProcessor解析器。
注:参数符合RequestResponseBodyMethodProcessor解析器要求的条件是
parameter.hasParameterAnnotation(RequestBody.class)。可详见
RequestResponseBodyMethodProcessor类源码。
注:参数符合ServletModelAttributeMethodProcessor解析器要求的条件是
parameter.hasParameterAnnotation(ModelAttribute.class) ||
this.annotationNotRequired && !BeanUtils.isSimpleProperty(parameter.getParameterType())。
可详见ModelAttributeMethodProcessor类源码。
需求介绍及实现方式说明:
声明:本文通过实现下述需求,进行示例。
需求介绍:
实现被@RequestBody注解的参数,既能接收Content-Type为application/json的请求的参数值,又能接收Content-Type为application/x-www-form-urlencoded的请求的参数值。
实现方式概述:
自定义参数解析器,当参数前有@RequestBody时,使用该解析器;在该解析器的内部,判断Content-Type,若Content-Type为application/x-www-form-urlencoded,那么采用ServletModelAttributeMethodProcessor解析器;否者采用RequestResponseBodyMethodProcessor解析器。
注:即相当于对RequestResponseBodyMethodProcessor解析器进行了简单的封装。
具体实现代码示例:
自定义参数解析器:
import org.springframework.core.MethodParameter;import org.springframework.web.bind.annotation.RequestBody;import org.springframework.web.bind.support.WebDataBinderFactory;import org.springframework.web.context.request.NativeWebRequest;import org.springframework.web.method.support.HandlerMethodArgumentResolver;import org.springframework.web.method.support.ModelAndViewContainer;import org.springframework.web.servlet.mvc.method.annotation.RequestResponseBodyMethodProcessor;import org.springframework.web.servlet.mvc.method.annotation.ServletModelAttributeMethodProcessor;import javax.servlet.http.HttpServletRequest;/** * 自定义参数解析器
*
* 注: 自定义参数解析器, 实现对RequestResponseBodyMethodProcessor的扩展
*
* 提示: 此解析器要实现的功能是: 若controller方法的参数前, 使用了@RequestBody注解, 那么解析此参数时,
* 1、若Content-Type为application/x-www-form-urlencoded,
* 那么走ServletModelAttributeMethodProcessor解析器
* 2、若Content-Type不为application/x-www-form-urlencoded,
* 那么走本应该走的RequestResponseBodyMethodProcessor解析器
*
*
@author JustryDeng * @date 2019/8/19 19:47
*/publicclass MyHandlerMethodArgumentResolver implements HandlerMethodArgumentResolver {
/**
* 解析Content-Type为application/json的默认解析器是RequestResponseBodyMethodProcessor
*/
private RequestResponseBodyMethodProcessor requestResponseBodyMethodProcessor;
/**
* 解析Content-Type为application/x-www-form-urlencoded的默认解析器是ServletModelAttributeMethodProcessor
*/
private ServletModelAttributeMethodProcessor servletModelAttributeMethodProcessor;
/**
* 全参构造
*/
public MyHandlerMethodArgumentResolver(RequestResponseBodyMethodProcessor requestResponseBodyMethodProcessor,
ServletModelAttributeMethodProcessor servletModelAttributeMethodProcessor) {
this.requestResponseBodyMethodProcessor = requestResponseBodyMethodProcessor;
this.servletModelAttributeMethodProcessor = servletModelAttributeMethodProcessor;
}
/**
* 当参数前有@RequestBody注解时, 解析该参数 会使用此 解析器
*
* 注:此方法的返回值将决定:是否使用此解析器解析该参数
*/
@Override
publicboolean supportsParameter(MethodParameter methodParameter) {
return methodParameter.hasParameterAnnotation(RequestBody.class);
}
/**
* 解析参数
*/
@Override
public Object resolveArgument(MethodParameter methodParameter, ModelAndViewContainer modelAndViewContainer,
NativeWebRequest nativeWebRequest, WebDataBinderFactory webDataBinderFactory)
throws Exception {
final String applicationXwwwFormUrlencoded = "application/x-www-form-urlencoded";
HttpServletRequest request = nativeWebRequest.getNativeRequest(HttpServletRequest.class);
if (request == null) {
thrownew RuntimeException(" request must not be null!");
}
String contentType = request.getContentType();
/*
* 如果ContentType是application/x-www-form-urlencoded,那么使用ServletModelAttributeMethodProcessor解析器
*
* 注:其实默认的,当系统识别到参数前有@RequestBody注解时,就会走RequestResponseBodyMethodProcessor解析器;这里就
* 相当于在走默认的解析器前走了个判断而已。
*/
if (applicationXwwwFormUrlencoded.equals(contentType)) {
return servletModelAttributeMethodProcessor.resolveArgument(methodParameter,
modelAndViewContainer, nativeWebRequest, webDataBinderFactory);
}
return requestResponseBodyMethodProcessor.resolveArgument(methodParameter,
modelAndViewContainer, nativeWebRequest, webDataBinderFactory);
}
}
注册该参数解析器:
import org.springframework.context.annotation.Configuration;import org.springframework.web.method.support.HandlerMethodArgumentResolver;import org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter;import org.springframework.web.servlet.mvc.method.annotation.RequestResponseBodyMethodProcessor;import org.springframework.web.servlet.mvc.method.annotation.ServletModelAttributeMethodProcessor;import javax.annotation.PostConstruct;import java.util.ArrayList;import java.util.List;/** * 配置注册参数解析器
*
*
@author JustryDeng * @date 2019/8/20 10:13
*/@Configuration
publicclass ConfigArgumentResolvers {privatefinal RequestMappingHandlerAdapter requestMappingHandlerAdapter;public ConfigArgumentResolvers(RequestMappingHandlerAdapter requestMappingHandlerAdapter) {this.requestMappingHandlerAdapter = requestMappingHandlerAdapter; }
@PostConstruct
privatevoid addArgumentResolvers() {// 获取到的是不可变的集合 List<HandlerMethodArgumentResolver> argumentResolvers =
requestMappingHandlerAdapter.getArgumentResolvers();
MyHandlerMethodArgumentResolver myHandlerMethodArgumentResolver =
getMyHandlerMethodArgumentResolver(argumentResolvers);
// ha.getArgumentResolvers()获取到的是不可变的集合,所以我们需要新建一个集合来放置参数解析器
List<HandlerMethodArgumentResolver> myArgumentResolvers =
new ArrayList<>(argumentResolvers.size() + 1);
// 将自定义的解析器,放置在第一个; 并保留原来的解析器
myArgumentResolvers.add(myHandlerMethodArgumentResolver);
myArgumentResolvers.addAll(argumentResolvers);
requestMappingHandlerAdapter.setArgumentResolvers(myArgumentResolvers);
}
/**
* 获取MyHandlerMethodArgumentResolver实例
*/
private MyHandlerMethodArgumentResolver getMyHandlerMethodArgumentResolver(
List<HandlerMethodArgumentResolver> argumentResolversList) {
// 解析Content-Type为application/json的默认解析器
RequestResponseBodyMethodProcessor requestResponseBodyMethodProcessor = null;
// 解析Content-Type为application/x-www-form-urlencoded的默认解析器
ServletModelAttributeMethodProcessor servletModelAttributeMethodProcessor = null;
if (argumentResolversList == null) {
thrownew RuntimeException("argumentResolverList must not be null!");
}
for (HandlerMethodArgumentResolver argumentResolver : argumentResolversList) {
if (requestResponseBodyMethodProcessor != null && servletModelAttributeMethodProcessor != null) {
break;
}
if (argumentResolver instanceof RequestResponseBodyMethodProcessor) {
requestResponseBodyMethodProcessor = (RequestResponseBodyMethodProcessor)argumentResolver;
continue;
}
if (argumentResolver instanceof ServletModelAttributeMethodProcessor) {
servletModelAttributeMethodProcessor = (ServletModelAttributeMethodProcessor)argumentResolver;
}
}
if (requestResponseBodyMethodProcessor == null || servletModelAttributeMethodProcessor == null) {
thrownew RuntimeException("requestResponseBodyMethodProcessor and "
+ " servletModelAttributeMethodProcessor must not be null!");
}
returnnew MyHandlerMethodArgumentResolver(requestResponseBodyMethodProcessor,
servletModelAttributeMethodProcessor);
}
以上是 SpringBoot@RequestBody报错('application/xwwwformurlencoded;charset=UTF8'notsupported) 的全部内容, 来源链接: utcz.com/z/509128.html