getjson跨域

[lw_881020]

请求地址（在浏览器中直接请求的）

http://server.llkk.com:8181/Server.do?gid=100000&utype=1&callback=?

返回字符串

?({server:[{stype:'server',serverinfo:[{sid:10010001,sname:'封测1服'}]})

$.getJSON("http://server.llkk.com:8181/Rank.do?sid=1&gid=1&type=level", function (data) {
        alert("s");//不会执行...
    });

public class Server extends HttpServlet {

	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		response.setHeader("P3P", "CP=CAO PSA OUR");
		response.setContentType("text/javascript");
		response.setCharacterEncoding("utf-8");

		HashMap serverMap = null;
		List<Object[]> serverList = (List<Object[]>) null;
		String callback = request.getParameter("callback");
		String gid = request.getParameter("gid");
		int utype = Integer.parseInt(request.getParameter("utype"));
		StringBuffer str = new StringBuffer();
		str.append("{server:[");

		serverMap = Constant.serverList;
		if (serverMap.size() != 0) {
			serverList = (List<Object[]>) serverMap.get(gid);
			if (serverList != null && serverList.size() > 0) {
				Iterator i = serverList.iterator();
				int index = 0;
				while (i.hasNext()) {
					index++;
					Object[] sInfo = (Object[]) i.next();
					if (utype == 0) {
						if (sInfo[4].equals("A")) {
							if (sInfo[3] == null) {
								str.append("{stype:'server',serverinfo:[{sid:" + sInfo[1] + ",sname:'" + sInfo[2] + "'}");
							} else {
								if (sInfo[3].equals(1)) {
									str.append("{stype:'newserver',serverinfo:[{sid:" + sInfo[1] + ",sname:'" + sInfo[2] + "'}");
								} else if (sInfo[3].equals(0)) {
									str.append("{stype:'server',serverinfo:[{sid:" + sInfo[1] + ",sname:'" + sInfo[2]+ "'}");
								}
							}
						}
					} else if (utype == 1) {
						if (sInfo[3] == null) {
							str.append("{stype:'server',serverinfo:[{sid:" + sInfo[1] + ",sname:'" + sInfo[2] + "'}");
						} else {
							if (sInfo[3].equals(1)) {
								str.append("{stype:'newserver',serverinfo:[{sid:" + sInfo[1] + ",sname:'" + sInfo[2] + "'}");
							} else if (sInfo[3].equals(0)) {
								str.append("{stype:'server',serverinfo:[{sid:" + sInfo[1] + ",sname:'" + sInfo[2]+ "'}");
							}
						}
					}
					if (index < serverList.size()) {
						str.append(",");
					}
				}
			}
		}
		str.append("]}");

		PrintWriter out = response.getWriter();
		out.print(callback+"("+str.toString()+")");
		out.flush();
		out.close();
	}
}

[lw_881020]

我想问的是：为什么getJSON里不执行，java代码出问题吗

[lw_881020]

第三段错了，应该是：

$.getJSON("http://server.llkk.com:8181/Server.do?gid=100000&utype=1&callback=?", function (data) {
alert("s")//不执行
});

[key2value]

因为你现在写的还是ajax，而不是JSONP协议

[LoveMuChen]

返回json格式 有问题吧...木有看到转义的地方!

[tony4geek]

跨域了。可以在后台url请求地址获取数据，然后前台通过ajax调用后台方法。

[lw_881020]

是JSON格式的问题，不用转义，

?({server:[{stype:'server',serverinfo:[{sid:10010001,sname:'封测1服'}]})
//格式错了，右边少了“]}”

引用 4 楼 LoveMuChen 的回复:

返回json格式 有问题吧...木有看到转义的地方!

[tianziren]

用.ajax吧 这个方法使用时好像问题