Java如何从HttpServletRequest中读取HTTP请求的body

注意：下面方法已验证通过。

HTTP请求中的是字符串数据：

//字符串读取

void charReader(HttpServletRequest request) {

BufferedReader br = request.getReader();

String str, wholeStr = "";
while((str = br.readLine()) != null){
wholeStr += str;
}
System.out.println(wholeStr);

}

//二进制读取

void binaryReader(HttpServletRequest request) {
int len = request.getContentLength();
ServletInputStream iii = request.getInputStream();
byte[] buffer = new byte[len];
iii.read(buffer, 0, len);
}

注意：

request.getInputStream();
request.getReader();
request.getParameter("key");

这三个函数中任何一个函数执行一次后（可正常读取body数据），之后再执行就无效了。

从HttpServletRequest中得到完整的请求URL

String getFullURL(HttpRequest request) {

StringBuffer url = request.getRequestURL();
if (request.getQueryString() != null) {
url.append(’?’);
url.append(request.getQueryString());
}
return url.toString();
}

转自：http://www.cnblogs.com/zhang-cb/p/6073781.html