在Spring MVC中写入文件请求 [英] Write request to file in Spring MVC
本文介绍了在Spring MVC中写入文件请求的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我希望能够将整个请求写入Spring MVC控制器中的文件。
I'd like to be able to write an entire request to a file within a Spring MVC controller.
我尝试过以下操作,但文件是即使我正在使用大量参数发出POST请求,也总是空的:
I've tried the following, but the file is always empty even though I'm making a POST request with loads of parameters:
@RequestMapping(method = RequestMethod.POST, value = "/payments/confirm")
public void receiveCallback(ServletInputStream inputStream)
{
try
{
inputStream.reset();
byte[] data = IOUtils.toByteArray(inputStream);
File file = new File(System.getProperty("java.io.tmpdir") + "test" + System.currentTimeMillis() + ".txt");
FileOutputStream fos = new FileOutputStream(file);
fos.write(data);
fos.close();
}
catch (Exception e)
{
logger.error("Error writing request", e);
}
}
我也尝试过使用HttpServletRequest.getInputStream() ,但结果相同。
I've also tried using HttpServletRequest.getInputStream(), but the same results.
推荐答案
使用InputStream不起作用(参见BalusC的回答)。下面是一个如何使用HTTPServletRequest对象来编写标题和参数的示例:
Using the InputStream won't work (see BalusC's answer). Here's a sample of how you could use a HTTPServletRequest object instead to write headers and parameters:
@RequestMapping(method = RequestMethod.POST, value = "/payments/confirm")
public void receiveCallback(HttpServletRequest request) {
try {
StringBuilder sb = new StringBuilder();
sb.append("Headers:\n");
Enumeration<String> headerNames = request.getHeaderNames();
while (headerNames.hasMoreElements()) {
String headerName = headerNames.nextElement();
Enumeration<String> headers = request.getHeaders(headerName);
while (headers.hasMoreElements()) {
String headerValue = headers.nextElement();
sb.append(headerName).append(':').append(headerValue).append('\n');
}
}
sb.append("\nParameters:\n");
for(Entry entry: (Set<Entry>) request.getParameterMap().entrySet(){
sb.append(entry.getKey()).append(':').append(entry.getValue()).append('\n');
}
byte[] data = sb.toString().getBytes();
File file = new File(System.getProperty("java.io.tmpdir") + "test"
+ System.currentTimeMillis() + ".txt");
FileOutputStream fos = new FileOutputStream(file);
fos.write(data);
fos.close();
} catch (Exception e) {
logger.error("Error writing request", e);
}
}
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