兼容火狐的AJAX

public String checkKey(){

String str="";

String key=request.getParameter("key");

String id=request.getParameter("id");

str=baseResourceAppManager.getCountByKey(key, id);

response.setContentType("text/html;charset=utf-8");

java.io.PrintWriter pw = null;

try {

pw = response.getWriter();

if (str.equals("1"))

{

pw.write("1");//数据库中已经有了该值

}else

{

pw.write("0");//数据库中还没有该值

}

} catch (java.io.IOException e) {

//异常默认已经存在

e.printStackTrace();

}

return null;

}