$.ajax({
       type: "get",
       async:false,
url: "http://192.168.1.102:8080/carop/jsonp",
       dataType: "jsonp",
jsonpCallback:"jsonpCallback",       
       success: function(data){
       alert(data.name+"\n "+data.tel);
       }
     }); 

import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
@WebServlet("/jsonp")
public class jsonp extends HttpServlet{
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp)
 throws ServletException, IOException {
 resp.setCharacterEncoding("UTF-8");
 //System.out.println("进入jsonp");
 resp.setContentType("text/json;charset=utf-8");
 String json="{\"name\":\"刘德华\",\"tel\":\"17688888888\"}";
 String jsonp="jsonpCallback("+json+")";
 PrintWriter pw=resp.getWriter();
 System.out.println(jsonp);
 pw.print(jsonp);
}
@Override
 protected void doPost(HttpServletRequest req, HttpServletResponse resp)
  throws ServletException, IOException {
 // TODO Auto-generated method stub
 doGet(req, resp);
 }
}