Spring 3.2.* MVC通过Ajax获取JSON数据报406错误
2017-06-19 18:47
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来源:http://blog.csdn.net/gbtyy/article/details/17165605
spring 3.2.x通过@ResponseBody标签返回JSON数据的方法都报406错: Failed
to load resource: the server responded with a status of 406 (Not Acceptable) 以及报错描述: The resource identified by this request is only capable
of generating responses with characteristics not acceptable according to the request "accept" headers () 于是,百度、Google了半天,发现遇到此问题的人挺多的,但是都是说什么添加Jackson什么的,我是采用的fastjson,换成Jackson尝试了半天均还是406。 后来在stackoverflow有人说是Spring
3.2的BUG,于是退回到3.1.*,不再报406了, 虽然换回3.1不报错了,但还是想看看在处理ajax返回json数据的方式上两个版本到底有何区别,debug之。 debug到org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodProcessor.writeWithMessageConverters(T returnValue,MethodParameter
returnType,ServletServerHttpRequest inputMessage,ServletServerHttpResponse outputMessage),在以下代码处抛出了异常:
[java] view
plain copy
if (compatibleMediaTypes.isEmpty()) {
throw new HttpMediaTypeNotAcceptableException(allSupportedMediaTypes);
}
看来是compatibleMediaTypes为空导致。看debug信息,经过比较发现3.1的requestedMediaTypes为[*/*],而3.2的requestedMediaTypes却为[text/html],producibleMediaTypes都是[application/json],继而发现获取acceptableMediaTypes的方式3.1与3.2不同
3.1的
3.1的
[java] view
plain copy
private List<MediaType> getAcceptableMediaTypes(HttpInputMessage inputMessage) {
try {
List<MediaType> result = inputMessage.getHeaders().getAccept();
return result.isEmpty() ? Collections.singletonList(MediaType.ALL) : result;
} catch (IllegalArgumentException ex) {
if (logger.isDebugEnabled()) {
logger.debug("Could not parse Accept header: " + ex.getMessage());
}
return Collections.emptyList();
}
}
3.2的
[java] view
plain copy
private List<MediaType> getAcceptableMediaTypes(HttpServletRequest request) throws HttpMediaTypeNotAcceptableException {
List<MediaType> mediaTypes = this.contentNegotiationManager.resolveMediaTypes(new ServletWebRequest(request));
return mediaTypes.isEmpty() ? Collections.singletonList(MediaType.ALL) : mediaTypes;
}
看来问题就是出在这里了。不知Spring为何改变该实现方式??!!
解决方法如下:
一、第一种 继续用Spring 3.1.4。
二、第二种
[html] view
plain copy
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">
把spring-mvc-3.0.xsd 升级到 spring-mvc-3.2.xsd
[html] view
plain copy
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd">
然后把<mvc:annotation-driven>修改成如下格式
[html] view
plain copy
<mvc:annotation-driven content-negotiation-manager="contentNegotiationManager" />
<bean id="contentNegotiationManager" class="org.springframework.web.accept.ContentNegotiationManagerFactoryBean">
<property name="favorPathExtension" value="false" />
<property name="favorParameter" value="false" />
<property name="ignoreAcceptHeader" value="false" />
<property name="mediaTypes" >
<value>
atom=application/atom+xml
html=text/html
json=application/json
*=*/*
</value>
</property>
</bean>
三、第三种
详情见下面的地址点击打开链接
四、第四种
spring 3.2时requestedMediaTypes却为[text/html]的情况报406错误,还有一个原因可能是由于采用的后缀有关,如果使用*.htm,*.html等,默认就会采用[text/html]编码,若改成*.json,*.shtml等就OK
spring 3.2.x通过@ResponseBody标签返回JSON数据的方法都报406错: Failed
to load resource: the server responded with a status of 406 (Not Acceptable) 以及报错描述: The resource identified by this request is only capable
of generating responses with characteristics not acceptable according to the request "accept" headers () 于是,百度、Google了半天,发现遇到此问题的人挺多的,但是都是说什么添加Jackson什么的,我是采用的fastjson,换成Jackson尝试了半天均还是406。 后来在stackoverflow有人说是Spring
3.2的BUG,于是退回到3.1.*,不再报406了, 虽然换回3.1不报错了,但还是想看看在处理ajax返回json数据的方式上两个版本到底有何区别,debug之。 debug到org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodProcessor.writeWithMessageConverters(T returnValue,MethodParameter
returnType,ServletServerHttpRequest inputMessage,ServletServerHttpResponse outputMessage),在以下代码处抛出了异常:
[java] view
plain copy
if (compatibleMediaTypes.isEmpty()) {
throw new HttpMediaTypeNotAcceptableException(allSupportedMediaTypes);
}
看来是compatibleMediaTypes为空导致。看debug信息,经过比较发现3.1的requestedMediaTypes为[*/*],而3.2的requestedMediaTypes却为[text/html],producibleMediaTypes都是[application/json],继而发现获取acceptableMediaTypes的方式3.1与3.2不同
3.1的
3.1的
[java] view
plain copy
private List<MediaType> getAcceptableMediaTypes(HttpInputMessage inputMessage) {
try {
List<MediaType> result = inputMessage.getHeaders().getAccept();
return result.isEmpty() ? Collections.singletonList(MediaType.ALL) : result;
} catch (IllegalArgumentException ex) {
if (logger.isDebugEnabled()) {
logger.debug("Could not parse Accept header: " + ex.getMessage());
}
return Collections.emptyList();
}
}
3.2的
[java] view
plain copy
private List<MediaType> getAcceptableMediaTypes(HttpServletRequest request) throws HttpMediaTypeNotAcceptableException {
List<MediaType> mediaTypes = this.contentNegotiationManager.resolveMediaTypes(new ServletWebRequest(request));
return mediaTypes.isEmpty() ? Collections.singletonList(MediaType.ALL) : mediaTypes;
}
看来问题就是出在这里了。不知Spring为何改变该实现方式??!!
解决方法如下:
一、第一种 继续用Spring 3.1.4。
二、第二种
[html] view
plain copy
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">
把spring-mvc-3.0.xsd 升级到 spring-mvc-3.2.xsd
[html] view
plain copy
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd">
然后把<mvc:annotation-driven>修改成如下格式
[html] view
plain copy
<mvc:annotation-driven content-negotiation-manager="contentNegotiationManager" />
<bean id="contentNegotiationManager" class="org.springframework.web.accept.ContentNegotiationManagerFactoryBean">
<property name="favorPathExtension" value="false" />
<property name="favorParameter" value="false" />
<property name="ignoreAcceptHeader" value="false" />
<property name="mediaTypes" >
<value>
atom=application/atom+xml
html=text/html
json=application/json
*=*/*
</value>
</property>
</bean>
三、第三种
详情见下面的地址点击打开链接
四、第四种
spring 3.2时requestedMediaTypes却为[text/html]的情况报406错误,还有一个原因可能是由于采用的后缀有关,如果使用*.htm,*.html等,默认就会采用[text/html]编码,若改成*.json,*.shtml等就OK
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