conn = (HttpURLConnection) target.openConnection();
conn.setDoInput(true);
conn.setDoOutput(true);
conn.setUseCaches(false);
conn.setRequestMethod("POST");
conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
conn.setRequestProperty("Connection", "Keep-Alive");
dataOutStream = new DataOutputStream(conn.getOutputStream());
dataOutStream.writeBytes("username=bob&password=232");
dataOutStream.flush();
dataOutStream.close();
conn.setDoInput(true);
conn.setDoOutput(true);
conn.setUseCaches(false);
conn.setRequestMethod("POST");
conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
conn.setRequestProperty("Connection", "Keep-Alive");
dataOutStream = new DataOutputStream(conn.getOutputStream());
dataOutStream.writeBytes("username=bob&password=232");
dataOutStream.flush();
dataOutStream.close();
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System.out.println("doPost!@!!!!!!!!!!!!!!!!!!!!!");
response.setContentType("text/html; charset=UTF-8");
response.setHeader("Cache-Control", "no-cache");
try {
System.out.println(request.getContentType().toString()
+ "---getContentType");
System.out.println(request.getParameter("username") + "---getParameter");
的不到这个username的值,取得是null
问题解决了。
conn.setRequestProperty("Content-Type","application/x-www-form-urlencoded");可以不设置