BeanUtils.populate获取from数据

public String doPost(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {

Users user = new Users();
Map map = req.getParameterMap();

try {
//把前台传过来的数据封装进JavaBean
BeanUtils.populate(user, map);
} catch (Exception e) {
e.printStackTrace();
}

if(StringUtils.isBlank(user.password)){
user.setPassword(new MD5().getkeyBeanofStr("11111111111"));
}else{
user.setPassword(new MD5().getkeyBeanofStr(user.getPassword()));
}
//当插入数据成功后,以输出流的形式给前台写出数据,经过前台验证是否保存数据成功
resp.setContentType("text/html;charset=GBK");
PrintWriter out = resp.getWriter();
out.write("inserUserSuccess");

}