jsonp

http://www.cnblogs.com/chopper/archive/2012/03/24/2403945.html

项目测试 可用
//jsonP
//添加<script>标签的方法 src 为 servlet url  在servlet中返回中         fc.getResponse().getWriter().print("result");
     this.addScriptTag=function (src){
         var script = document.createElement('script');
         script.setAttribute("type","text/javascript");
         script.src = src;
         document.body.appendChild(script);
     }


java端:


	response.setContentType("text/html;charset=UTF-8");
	response.getWriter().print( result );