HTTP请求中的form data和request payload的区别
2017-09-09 10:37
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原文转载自:http://xiaobaoqiu.github.io/blog/2014/09/04/form-data-vs-request-payload/
HTTP请求中的form data和request payload的区别
AJAX Post请求中常用的两种传参数的形式:form data 和 request payload
get请求的时候,我们的参数直接反映在url里面,形式为key1=value1&key2=value2形式,比如:
如果是post请求,那么表单参数是在请求体中,也是以key1=value1&key2=value2的形式在请求体中。通过chrome的开发者工具可以看到如下:
这里要注意post请求的Content-Type为application/x-www-form-urlencoded(默认的),参数是在请求体中,即上面请求中的Form Data。
前端:
在servlet中,可以通过request.getParameter(name)的形式来获取表单参数。
如果使用原生AJAX POST请求的话,那么请求在chrome的开发者工具的表现如下,主要是参数在
注意请求的Content-Type为application/json;charset=UTF-8,而请求表单参数在Request Payload中。
后端获取(这里使用org.apache.commons.io.):
参考:http://stackoverflow.com/questions/10494574/what-is-the-difference-between-form-data-and-request-payload
if a request (typically POST) has Content-type header set to application/x-www-form-urlencoded the body is expected to be in the form of a standard querystring with url-encoded key=value pairs joined by &. Form data section then shows the key-value parameters
(when viewed parsed). This way was much more common in past because it is a default for HTML forms.
other cases are shown in Request payload section (and nowadays parsed for readability as well for common formats like JSON).
HTTP请求中的form data和request payload的区别
AJAX Post请求中常用的两种传参数的形式:form data 和 request payload
Form data
get请求的时候,我们的参数直接反映在url里面,形式为key1=value1&key2=value2形式,比如:1 | http://news.baidu.com/ns?word=NBA&tn=news&from=news&cl=2&rn=20&ct=1 |
12 | RequestURL:http://127.0.0.1:8080/test/test.do Request Method:POST Status Code:200 OK Request Headers Accept:text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8 Accept-Encoding:gzip,deflate,sdch Accept-Language:zh-CN,zh;q=0.8,en;q=0.6 AlexaToolbar-ALX_NS_PH:AlexaToolbar/alxg-3.2 Cache-Control:max-age=0 Connection:keep-alive Content-Length:25 Content-Type:application/x-www-form-urlencoded Cookie:JSESSIONID=74AC93F9F572980B6FC10474CD8EDD8D Host:127.0.0.1:8080 Origin:http://127.0.0.1:8080 Referer:http://127.0.0.1:8080/test/index.jsp User-Agent:Mozilla/5.0 (Windows NT 6.1)AppleWebKit/537.36 (KHTML, like Gecko) Chrome/33.0.1750.149 Safari/537.36 Form Data name:mikan address:street Response Headers Content-Length:2 Date:Sun, 11 May 2014 11:05:33 GMT Server:Apache-Coyote/1.1 |
前端:
12 | xhr.setRequestHeader("Content-type","application/x-www-form-urlencoded"); xhr.send("name=foo&value=bar"); |
12 | /** * 获取httpRequest的参数 * * @param request * @param name * @return */ protected String getParameterValue(HttpServletRequest request, String name) { return StringUtils.trimToEmpty(request.getParameter(name)); } |
Request payload
如果使用原生AJAX POST请求的话,那么请求在chrome的开发者工具的表现如下,主要是参数在12 | Remote Address:192.168.234.240:80 |
后端获取(这里使用org.apache.commons.io.):
12 | /** * 从 request 获取 payload 数据 * * @param request * @return * @throws IOException */ private String getRequestPayload(HttpServletRequest request) throws IOException { return IOUtils.toString(request.getReader()); } |
二者区别
参考:http://stackoverflow.com/questions/10494574/what-is-the-difference-between-form-data-and-request-payloadif a request (typically POST) has Content-type header set to application/x-www-form-urlencoded the body is expected to be in the form of a standard querystring with url-encoded key=value pairs joined by &. Form data section then shows the key-value parameters
(when viewed parsed). This way was much more common in past because it is a default for HTML forms.
other cases are shown in Request payload section (and nowadays parsed for readability as well for common formats like JSON).
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