Java 一个servlet通过http post将字符串传递给另一个servlet
我正在通过http url连接将字符串从一个servlet发送到另一个servlet:Java 一个servlet通过http post将字符串传递给另一个servlet,java,servlets,Java,Servlets,我正在通过http url连接将字符串从一个servlet发送到另一个servlet: final HttpURLConnection http = (HttpURLConnection) url.openConnection(); // here url is the url of the second servlet http.setRequestMethod("POST"); http.setDoOutput(true); http.setDoInput(true); http.s
final HttpURLConnection http = (HttpURLConnection) url.openConnection(); // here url is the url of the second servlet
http.setRequestMethod("POST");
http.setDoOutput(true);
http.setDoInput(true);
http.setUseCaches(false);
final OutputStream outstr = http.getOutputStream();
outstr.write(sb.toString().getBytes());
outstr.flush();
outstr.close();
我面临的问题是将此作为来自另一个servlet的请求来读取。我尝试在第二个servlet的getPost方法中编写以下代码,但这不起作用:
try {
int len = req.getContentLength();
byte[] input = new byte[len];
ServletInputStream sin = req.getInputStream();
int c, count = 0;
while ((c = sin.read(input, count, input.length - count)) != -1) {
count += c;
}
sin.close();
String inString = new String(input);
String decodedString = URLDecoder.decode(inString, "UTF-8");
log.info("Response received - ");
log.info(decodedString);
resp.getWriter().write(decodedString);
resp.getWriter().flush();
resp.getWriter().close();
} catch (IOException e) {
}
有人能帮助您找到获取第一个servlet发送的字符串并显示它的正确方法吗?您可以将字符串作为参数写入发布的servlet中,并在作为参数接收的servlet中读取它 在那篇文章中:
outstr.write(("your_param=" + sb.toString()).getBytes());
接收以下内容的Servlet:
String yourParamValue = request.getParameter("your_param");
试试这个代码,它应该能解决这个问题
try {
BufferedReader reader = request.getReader();
StringBuilder inputStringBuilder = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
inputStringBuilder.append(line).append("\n");
}
String requestData = inputStringBuilder.toString();
reader.close();
resp.getWriter().write(requestData);
resp.getWriter().flush();
resp.getWriter().close();
} catch (IOException e) {
e.printStacktrace();
}
定义“这不起作用”。你到底得到了什么?会发生什么?