AJAX的跨域访问-两种有效的解决方法介绍

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protected void service(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, java.io.IOException {

Object obj = "test";
ServletOutputStream sos = resp.getOutputStream();
StringBuffer sb = new StringBuffer();
resp.setCharacterEncoding("GBK");

resp.setHeader("Charset","GBK");
resp.setContentType("");
//下面那句表明是javascript脚本文件
resp.setContentType("text/javascript");

sb.append("eval(/""+paramMap.get("success")+"(/'"+obj.toString()+"/')/")");
try {
    sos.write(sb.toString().getBytes(this.character_encoding));
} catch (Exception e) {
    System.out.println(e.toString());
} finally {
     try {
   sos.close();
} catch (Exception e) {
   System.out.println(e.toString());
}
}
}