项目中多条数据保存的json实例

//js代码function checkCode(num){
	var typeid = $("#typeid").val();
	if(typeid == ""){
		alert("请选择信息类别");
		return false ;
	}
	var i = 1;
	 for(i=1;i<=num;i++){ //判断每一行是否填写相关的值
		  var dataname =  $("input[name=‘dataname"+i+"‘]").val();
		  var isopen=$("input:radio[name=‘isopen"+i+"‘]:checked").val();
		  if(dataname == ""){
			  alert("请输入数据名称");
			  return false;
		  }
	 }
	 return true;
}

//自动新增一行
$(function(){
		 $( ".table1" ).on( "click",".add", function() {
			var num=$(".table1").find(".clone-tr").length;
			if(checkCode(num)){
				 ht = $(this).closest(".clone-tr").clone(true);

			// var num=$(".table1").find(".clone-tr").length;
			 if(num<20){
				  var check=$(ht).find(".check-box");
				  var inp=$(ht).find("input[type=‘text‘]");
				  var num2 = num + 1
				  $(check).eq(0).find("input[type=‘radio‘]").attr("name", ‘openway‘+num2);
				  $(check).eq(1).find("input[type=‘radio‘]").attr("name", ‘isopen‘+num2);
				  inp.val("");
				  inp.filter(function(){
				  	 return $(this).attr("name") == "dataname1";
				  }).attr("name", ‘dataname‘+num2);

				  inp.filter(function(){
				  	 return $(this).attr("name") == "datacontent1";
				  }).attr("name", ‘datacontent‘+num2);

				  inp.filter(function(){
				  	 return $(this).attr("name") == "openInterface1";
				  }).attr("name", ‘openInterface‘+num2);

				  inp.filter(function(){
				  	 return $(this).attr("name") == "noOpenInterface1";
				  }).attr("name", ‘noOpenInterface‘+num2);

				  $(ht).find(".operate").remove();
				  $(this).closest(".table1 tbody").prepend(ht);			  

				  $("#numid").val(num);
				  $("#num2id").val(num2); //保存添加后的tr数目
			 }
		   }

         });
		 $( ".table1" ).on( "click",".delete", function() {
			 var num=$(".table1").find(".clone-tr").length;
			 if(num>1){
				  $(this).closest(".table1 tbody").find("tr").eq(0).remove();
				 }

         });

	    $("#submitid").click(submitAnswer);	  

});

//拼json 串
function writeToJson(num){
	 var i = 1;
	  var jsonData = "[";
	  for(i=1;i<=num;i++){
		  var dataname =  $("input[name=‘dataname"+i+"‘]").val();
		  var datacontent =  $("input[name=‘datacontent"+i+"‘]").val();
		  var openInterface =  $("input[name=‘openInterface"+i+"‘]").val();
		  var noOpenInterface =  $("input[name=‘noOpenInterface"+i+"‘]").val();
		  var openway=$("input:radio[name=‘openway"+i+"‘]:checked").val();
		  var isopen=$("input:radio[name=‘isopen"+i+"‘]:checked").val();
		  if(i == num ){
			  jsonData += "{‘dataname‘:‘"+dataname+"‘,‘datacontent‘:‘"+datacontent+"‘,‘openway‘:‘"+openway+"‘,‘isopen‘:‘"+isopen+"‘,‘openInterface‘:‘"+openInterface+"‘,‘noOpenInterface‘:‘"+noOpenInterface+"‘}";
		  }else{
			  jsonData += "{‘dataname‘:‘"+dataname+"‘,‘datacontent‘:‘"+datacontent+"‘,‘openway‘:‘"+openway+"‘,‘isopen‘:‘"+isopen+"‘,‘openInterface‘:‘"+openInterface+"‘,‘noOpenInterface‘:‘"+noOpenInterface+"‘},";
		  }
	  }
	  jsonData += "]" ;
	  //alert("--------"+jsonData);
	  return jsonData ;
}
function submitAnswer(){
	 var num = $("#num2id").val();
	 if(num == ""){
		 num = 1;
	 }
	 if(checkCode(num)){
		 var cstr = writeToJson(num); // 拼 json 串
		 var typeid = $("#typeid").val();
		 $.ajax({
		        url: "/saveSurWXData.do",
		        cache: false,
		        type: "POST",
		        dataType: "json",
		        data: {
		            "content":cstr,
		            "typeid":typeid
		        },
		        success:function(data){
		        	var a = data.topicId;	//后台返回json到前台后处理
		        	$("#topicId").val(a);
		        	alert("保存成功");
		        	window.location.reload();
		        	},
		        error: function(){alert("保存失败");}
		    });
	 }

}

　jsp 页面：

 <tr class="clone-tr">
                          <td><input type="text" class="inp" name="dataname1"  placeholder="请输入"/></td>
                          <td><input type="text" class="inp" name="datacontent1"  placeholder="请输入"/></td>

                          <td>
                          <div class="check-box">
                            <label><input name="isopen1" type="radio" value="是" checked>是</label>
                            <label><input type="radio" name="isopen1" value="否">否</label>
                           </div>
                          </td>
                          <td>
                            <p class="box-b">
                                <input style="width: 160px;" type="text" class="inp" name="noOpenInterface1" placeholder="请输入"/>
                            </p>
                          </td>
                          <td class="btn-operate"><span class="operate"><a class="add">+</a><a class="delete">-</a></span> </td>
                        </tr>

　　后台处理json 并返回值：

String jsonStr = this.getRequest().getParameter("content");
		JSONArray jsonArray = JSONArray.fromObject(jsonStr);
		for(int i=0;i<jsonArray.size(); i++){
			JSONObject jsonJ = jsonArray.getJSONObject(i);
			String dataname = jsonJ.getString("dataname");
			String datacontent = jsonJ.getString("datacontent");

			String openway = jsonJ.getString("openway");
			String isopen = jsonJ.getString("isopen");

			String openInterface = jsonJ.getString("openInterface");
			String openperiod = jsonJ.getString("noOpenInterface");
              }

　　　　//返回json 到前台

        JSONObject jsonObject = new JSONObject();
		jsonObject.put("topicId", topicId);
	    this.getPrintWriter(jsonObject);

　　private void getPrintWriter(Object object) {
		try {
			out = this.getResponse().getWriter();
			out.print(object);
			out.close();
		} catch (IOException e) {
			System.out.println("error:"+e.getMessage());
		}
	}

当然还有 struts 的配置：

<action name="*" class="com.*action.*" method="*">
<result name="success" type="json"></result>
</action>