Java Spring，使用 POST 重定向到外部 url
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Spring, redirect to external url using POST
提问by Accollativo
In the following Spring 3.1 action, I've to do some stuff and add attribute to a POST request, and then redirect it to external URL through POST (I can't use GET).
在下面的 Spring 3.1 操作中，我必须做一些事情并将属性添加到 POST 请求，然后通过 POST 将其重定向到外部 URL（我不能使用 GET）。
@RequestMapping(value = "/selectCUAA", method = RequestMethod.POST)
public ModelAndView selectCUAA(@RequestParam(value="userID", required=true) String cuaa, ModelMap model) {
//query & other...
model.addAttribute(PARAM_NAME_USER, cuaa);
model.addAttribute(... , ...);
return new ModelAndView("redirect:http://www.externalURL.com/", model);
}
But with this code the GET method is used (the attributes are appended to http://www.externalURL.com/). How can I use the POST method? It's mandatory from the external URL.
但是在这段代码中使用了 GET 方法（属性被附加到http://www.externalURL.com/）。如何使用 POST 方法？这是来自外部 URL 的强制性要求。
采纳答案by Accollativo
Like @stepanian said, you can't redirect with POST. But there are few workarounds:
就像@stepanian 说的，你不能用 POST 重定向。但是有几个解决方法：
- Do a simple HttpUrlConnection and use POST. After output the response stream. It works, but I had some problem with CSS.
- Do stuff in your controller and after redirect the result data to a fake page. This page will do automatically the POST through javascript with no user interaction (more details):
- 做一个简单的 HttpUrlConnection 并使用 POST。输出响应流后。它有效，但我在使用 CSS 时遇到了一些问题。
- 在你的控制器中做一些事情，然后将结果数据重定向到一个假页面。此页面将通过 javascript 自动执行 POST，无需用户交互（更多详细信息）：
html:
html：
<form name="myRedirectForm" action="https://processthis.com/process" method="post">
<input name="name" type="hidden" value="xyz" />
<input name="phone" type="hidden" value="9898989898" />
<noscript>
<input type="submit" value="Click here to continue" />
</noscript>
</form>
<script type="text/javascript">
$(document).ready(function() {
document.myRedirectForm.submit();
});
</script>
回答by stepanian
You can't redirect with POST. You can send a POST request using Java code with a class like HttpURLConnectionwithin the action.
你不能用 POST 重定向。您可以使用 Java 代码在操作中使用HttpURLConnection之类的类发送 POST 请求。
