============问题描述============
if (sqlConn.executeQuery("select * from user_test where name =‘"
+ username + "‘and password =‘" + password + "‘") != null) {
resp.setContentType("text/xml; charset=UTF-8");
PrintWriter out = resp.getWriter();
out.print("用户" + username + "登陆成功");
out.flush();
out.close();
} else {
resp.setContentType("text/xml; charset=UTF-8");
PrintWriter out = resp.getWriter();
out.print("用户名或密码不正确");
out.flush();
out.close();
}
============解决方案1============
原文:http://www.cnblogs.com/yiguobei99/p/4041845.html