jquery动态实现填充下拉框

项目需要实现一个功能 当点下拉框时动态加载后台数据。
这是后台数据

Java代码

 

1. protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {   
2. request.setCharacterEncoding("UTF-8");   
3. response.setCharacterEncoding("UTF-8");   
4. Map<String, String> product_names = DataManager.getGroup_names();   
5. StringBuffer sb = new StringBuffer();   
6. sb.append("{");   
7. Set<String> keys = product_names.keySet();   
8. for(Iterator<String> iter = keys.iterator();iter.hasNext();) {   
9. String key = iter.next();   
10. sb.append(product_names.get(key)+":");   
11. sb.append("['"+key+"'],");   
12. }   
13. sb.deleteCharAt(sb.length()-1);   
14. sb.append("}");   
15. response.getWriter().write(sb.toString());   
16. }  

protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {request.setCharacterEncoding("UTF-8");response.setCharacterEncoding("UTF-8");Map<String, String> product_names = DataManager.getGroup_names();StringBuffer sb = new StringBuffer();sb.append("{");Set<String> keys = product_names.keySet();for(Iterator<String> iter = keys.iterator();iter.hasNext();) {String key = iter.next();sb.append(product_names.get(key)+":");sb.append("['"+key+"'],");}sb.deleteCharAt(sb.length()-1);sb.append("}");response.getWriter().write(sb.toString());}

前台设值

Java代码

 

1. $.ajax({   
2. type:"post",   
3. url:"InitData",   
4. data:"",   
5. success:function(data) {   
6. var map =  eval("("+data+")");   
7. $.each(map,function(key,values){   
8. $("<option value="+values+">"+key+"</option>").appendTo("#p_name");   
9. }   
10. );    
11. }   
12. });