jQuery 如果使用 PUT，SpringMVC 无法识别请求正文参数
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SpringMVC is not recognizing request body parameters if using PUT
提问by Sven Haiges
Maybe this is supposed to not work, but at least I'd like to understand why then. I am passing a simple val=somevalue in the PUTbody but spring sends back a 400 Bad Requestas it does not seem to recognise the val parameter.
也许这应该行不通，但至少我想了解为什么。我在PUT正文中传递了一个简单的 val=somevalue但 spring 发回了 a，400 Bad Request因为它似乎无法识别 val 参数。
Similar request works with POST. Could it be SpringMVCis not recognizing the PUTrequest body as source for parameters?
类似的请求适用于POST. 可能是SpringMVC没有将PUT请求正文识别为参数源吗？
Content=-Typeis set correctly to application/x-www-form-urlencoded in both cases.
Content=-Type在这两种情况下都正确设置为 application/x-www-form-urlencoded。
The method that spring refuses to call is this:
spring拒绝调用的方法是这样的：
@RequestMapping(value = "config/{key}", method = RequestMethod.PUT)
@ResponseBody
public void configUpdateCreate(final Model model, @PathVariable final String key, @RequestParam final String val,
final HttpServletResponse response) throws IOException
{
//...
}
For completeness, here is the jquery ajax call. I cannot see anything wrong with that. Client is Firefox 4 or Chrome, both show the same result.
为了完整起见，这里是 jquery ajax 调用。我看不出有什么问题。客户端是 Firefox 4 或 Chrome，两者显示相同的结果。
$.ajax({
url:url,
type:'PUT',
data:'val=' + encodeURIComponent(configValue),
success: function(data) {...}
});
Any ideas?
有任何想法吗？
回答by mrmanly
I don't know of a work around at this point, but here is the bug report that is a "Won't Fix." I've been fighting the same issue
我目前不知道有什么解决办法，但这里有一个“无法修复”的错误报告。我一直在与同样的问题作斗争
https://jira.springsource.org/browse/SPR-7414
https://jira.springsource.org/browse/SPR-7414
Update: Here is my fix. I'm using RequestBody annotation. Then using MultiValueMap.
更新：这是我的修复。我正在使用 RequestBody 注释。然后使用 MultiValueMap。
http://static.springsource.org/spring/docs/3.0.5.RELEASE/reference/mvc.html#mvc-ann-requestbody
http://static.springsource.org/spring/docs/3.0.5.RELEASE/reference/mvc.html#mvc-ann-requestbody
@RequestMapping(value = "/{tc}", method = RequestMethod.PUT)
public void update(@PathVariable("tc") final String tc,
@RequestBody MultiValueMap<String,String> body, HttpServletResponse response) {
String name = body.getFirst("name");
// more code
}
回答by K. Siva Prasad Reddy
SinceSpring 3.1, this is resolved using org.springframework.web.filter.HttpPutFormContentFilter.
从Spring 3.1 开始，这是使用org.springframework.web.filter.HttpPutFormContentFilter解决的。
<filter>
<filter-name>httpPutFormContentFilter</filter-name>
<filter-class>org.springframework.web.filter.HttpPutFormContentFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>httpPutFormContentFilter</filter-name>
<servlet-name>rest</servlet-name>
</filter-mapping>
回答by Slava Semushin
I don't have right solution for you, but in your case I try following:
我没有适合您的解决方案，但在您的情况下，我尝试以下操作：
- create page with
form:form method="PUT" - declare
HiddenHttpMethodFilterinweb.xml
- 创建页面
form:form method="PUT" - 声明
HiddenHttpMethodFilter中web.xml
If this will works, then
如果这行得通，那么
- change
typefromPUTtoPOSTin ajax call - add needed params which client has with
form:formtag (something like_method)
- 改变
type来自PUT于POST在Ajax调用 - 添加客户端具有
form:form标记的所需参数（类似于_method）
In other words, as I understand Spring emulates PUTbased on simple POSTwith special parameter. Just send to him what he wants.
换句话说，据我所知，SpringPUT基于POST带有特殊参数的simple进行模拟。把他想要的东西发给他就行了。
See also: http://stsmedia.net/spring-finance-part-2-spring-mvc-spring-30-rest-integration/and related code examples there: http://code.google.com/p/spring-finance-manager/source/browse
另请参阅：http: //stsmedia.net/spring-finance-part-2-spring-mvc-spring-30-rest-integration/和相关代码示例：http: //code.google.com/p/spring -财务经理/来源/浏览
HTH
HTH
回答by Ravi Bhatt
This, as suggest above, seems to be a bug in spring/servlet API. In reality PUTrequests are supposed to work on Request Body (or payload)and not on Request Parameters. In that sense, servlet API & spring's handling is correct.
如上所述，这似乎是spring/servlet API. 实际上，PUT请求应该Request Body (or payload)对请求参数起作用而不是对请求参数起作用。从这个意义上说，servlet API & spring 的处理是正确的。
Having said that, a better and much easier workaround is to pass no data element from your javascript/jQuerycall and pass your parameters as part of the url itself. meaning, set parameters in the url field the way you would do in a GETcall.
话虽如此，更好且更简单的解决方法是不从您的javascript/jQuery调用中传递任何数据元素，并将您的参数作为 url 本身的一部分传递。意思是，在 url 字段中设置参数，就像您在GET通话中所做的那样。
$.ajax({
url: "yoururl" + "?param1=param2Val&..",
type: "PUT",
data: "",
success: function(response) {
// ....
}
});
now this works for simple parameters, i guess, will not work for complex JSON types. Hope this helps.
现在这适用于简单的参数，我猜，不适用于复杂的 JSON 类型。希望这可以帮助。
