ajax 动态级联

@RequestMapping(value="/modifytable")
	public String modifytable(ModelMap model,BzDmb bzDmb,HttpServletRequest request,HttpServletResponse response) { 
		//model.addAttribute("bzDmb",bzDmb); 
		//语境列表
		List<DmYjdmb> dmYjdmbList = dmYjdmbManager.queryDmYjdmbList();
		request.setAttribute("dmYjdmbList",dmYjdmbList); 
	    return "/bzdmb/modify";
	}
	
	/**根据业务分类列出表*/
	@RequestMapping(value="/bmlist/{ywflDm}")
	public void bmListByYwfldm(ModelMap model,@PathVariable java.lang.String ywflDm,HttpServletResponse response) { 
        String theYwflDm = ywflDm==null?"":ywflDm.trim();
		List<BzDmb> bmList = bzDmbManager.queryDmbByYwflDm(theYwflDm);  
		String content = JSONArray.fromObject(bmList).toString(); 
		super.ajaxOut(content,response);  
	    
	}

 
		<TABLE width="100%" align=center>
		   
		  <TR>
		    <TD  >
		      <TABLE align=center>
			        <TBODY>
				        <TR>
				          <TD>业务分类 : </TD>
				          <TD>
					          <select id="ywflDm" name="ywflDm" style="width: 160px">
									<option value="">
										请选择 
									</option>
									<c:forEach items="${dmYjdmbList}" var="obj">
										<option value="${obj.yjDm }" >
											${obj.yjMc}
										</option>
									</c:forEach>
								</select> 
						   </TD>
				         <td></td>
				          <TD>表中文名 ：</TD>
				          <TD>
						          <select id="bzwm" name="bzwm">
										<option value="">
											请选择
										</option>
								 </select> 
				          </TD>
				          
				        </TR> 
			          </TBODY>
		          </TABLE>
		       </TD>
		   </TR> 
		   </TABLE>

<script type="text/javascript">
		$("#ywflDm").change(function() { 
			var ywflDm=$("#ywflDm").val(); 
			$.ajax({
				"url": "${ctx}/bzdmb/bmlist/"+ywflDm,"type":"post",'success': function(content){ 
				 var dmbInfo=eval(content);
				 $("#bzwm").html("");
				 $("#bzwm").append("<option value='' >请选择</option>")
				 for(var i=0;i<dmbInfo.length;i++){
				  //	var bm=dmbInfo[i]["bm"];
				 	var bzwm=dmbInfo[i]["bzwm"];
				 	var dmbDm=dmbInfo[i]["dmbDm"];
				 	$("#bzwm").append("<option value='"+dmbDm+"'>"+bzwm+"</option>")
				 }
	      	}});
		})
 </script>

（编辑：李大同）

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