用jsonp解决easyui 跨域问题

服务端servlet代码片段：

/**
 * 处理请求
 * @throws IOException 
 */
private void requestManage(HttpServletRequest req,HttpServletResponse res) throws IOException{
	//配置编码类型
	res.setContentType("text/html;charset=UTF-8;pageEncoding=UTF-8");  //控制浏览器的编码行为
	res.setCharacterEncoding("UTF-8");//目的是用于response.getWriter()输出的字符流的乱码问题，如果是response.getOutputStream()是不需要此种解决方案的；因为这句话的意思是为了将response对象中的数据以UTF-8解码后发向浏览器；
	res.setHeader("content-type","text/html;charset=UTF-8");	
	req.setCharacterEncoding("UTF-8");	
	String jason="{"currentNumber":10,"pageNo":1,"pageSize":10,"rows":[{"email":"zhubj1@gmail.com","firstname":"fname1","id":3,"lastname":"lname1","phone":"(000)000-0000","valid":true},{"email":"name2@gmail.com","firstname":"fname2","id":4,"lastname":"lname2",{"email":"name3@gmail.com","firstname":"fname3","id":5,"lastname":"lname3",{"email":"name4@gmail.com","firstname":"fname4","id":7,"lastname":"lname4",{"email":"name5@gmail.com","firstname":"fname5","id":8,"lastname":"lname5",{"email":"name6@gmail.com","firstname":"fname6","id":9,"lastname":"lname6",{"email":"name7@gmail.com","firstname":"fname7","id":10,"lastname":"lname7",{"email":"name8@gmail.com","firstname":"fname8","id":11,"lastname":"lname8",{"email":"name9@gmail.com","firstname":"fname9","id":12,"lastname":"lname9",{"email":"name10@gmail.com","firstname":"fname10","id":13,"lastname":"lname10","valid":true}],"total":11,"totalPages":2}";
	String callback=req.getParameter("callback");//得到回调函数名  
	System.out.println(callback);
	res.getWriter().write(callback+"("+jason+")");//封装成 回调函数名（data）形式  
}

前端：

url="http://localhost:8888/study/test"  为跨域调用

<table id="dg1" title="用户管理" class="easyui-datagrid" style="width:100%;height:100%px"
			url="http://localhost:8888/study/test"  
			toolbar="#toolbar" pagination="true"
			rownumbers="true" fitColumns="true" singleSelect="true">
		<thead>
			<tr>
				<th field="firstname" width="50">姓</th>
				<th field="lastname" width="50">名</th>
				<th field="phone" width="50">电话</th>
				<th field="email" width="50">Email</th>
				<th field="classno" width="50">班级</th>
				
			</tr>
		</thead>
	</table>

js代码片段：

在jquery.easyui.min.js中增加一个跨域调用的js函数

$.ajax({type:opts.method,url:opts.url,data:_7ff,dataType:"jsonp",success:function(data){

（编辑：李大同）

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