ajax如何传一个string到webservice，提示web服务调用无效，参数“”缺少值，请问以下报错如何处理？谢谢

[qq_16630463]

$("#btn1").click(function () {
				var jsonObj = {"account": "value1","contant": "value2""Detail": [{"product": "value3","model": "value4","QTY": 1}]}
;
				var jsonStr = JSON.stringify(jsonObj);				
				//alert(jsonStr);
                $.ajax({
                    type: "POST",
                    contentType: "application/json; charset=utf-8",
					async: false,
					dataType: "json",
                    url: "http://localhost:8078/data.asmx/HelloWorld",
                    data: jsonStr,
                    success: function (data) {
                      alert(data.d);
                  	},
                     error: function (data) {
                     alert($.parseJSON(data.responseText).Message);},
                });
            });

[WebMethod]
        public string HelloWorld(string jsonStr)
        {

            return "Hello " + jsonStr;
        }

[usecf]

jsonObj = {"account": "value1","contant": "value2""Detail": [{"product": "value3","model": "value4","QTY": 1}]} 这块写错了 json格式本身写的有问题

[usecf]

你要给 jsonObj 变量的字符串加引号的 jsonObj ='{"OPNAME": "testname","APPLYNO": "AbbrOP01","OPACID": 3424,"OPAMT": 1000,"OPCURR": "CNY","OPCREA": "LJY","OPOWNR": "RFS","OPNEED": "XUQIU","OPCPTI": "MINGXE","OPCOMP": "LUOSHI","Shipto": "10001","Detail": [{"OUPROD": "WWREWS","OUMODE": "WERWED","OUQTY": 1,"OUEXPP": 1,"OUMINQ": 1}]}' 然后你要传递json对象 就用下面这个 var jsonStr = JSON.stringify(jsonObj);

[潇湘忆梦]

第二层嵌套的内容去掉[] ,你再试试 $.ajax({ type: "POST", url: "http://localhost:8078/data.asmx/HelloWorld", contentType: "application/json", //必须有 dataType: "json", //表示返回值类型，不必须 data: JSON.stringify({ "OPNAME": "testname", "APPLYNO": "AbbrOP01", "OPACID": "3424", "Detail": { "OUPROD": "WWREWS", "OUMODE": "WERWED", "OUQTY": "1", "OUEXPP": "1", "OUMINQ": "1" } }), success: function (res) { console.log(res); } });

[qq_16630463]

引用 1 楼 usecf 的回复:

jsonObj = {"account": "value1","contant": "value2""Detail": [{"product": "value3","model": "value4","QTY": 1}]} 这块写错了 json格式本身写的有问题

谢谢检查，我改完之后，还是这样的报错。

[usecf]

把你改过的jsonObj发出来看看

[qq_16630463]

引用 3 楼 usecf 的回复:

把你改过的jsonObj发出来看看

$("#btn1").click(function () { var jsonObj = {"OPNAME": "testname","APPLYNO": "AbbrOP01","OPACID": 3424,"OPAMT": 1000,"OPCURR": "CNY","OPCREA": "LJY","OPOWNR": "RFS","OPNEED": "XUQIU","OPCPTI": "MINGXE","OPCOMP": "LUOSHI","Shipto": "10001","Detail": [{"OUPROD": "WWREWS","OUMODE": "WERWED","OUQTY": 1,"OUEXPP": 1,"OUMINQ": 1}]}; //var jsonStr = JSON.stringify(jsonObj); //alert(jsonStr); $.ajax({ type: "POST", contentType: "application/json; charset=utf-8", async: false, dataType: "json", url: "http://localhost:8078/data.asmx/HelloWorld", //data:{"jsonStr":"{\"account\": \"value1\",\"contant\": \"value2\"}"}, data:？？？, success: function (data) { alert(data.d); }, error: function (data) { alert($.parseJSON(data.responseText).Message);}, }); });

[qq_16630463]

引用 4 楼 qq_16630463 的回复:

[quote=引用 3 楼 usecf 的回复:] 把你改过的jsonObj发出来看看

 $("#btn1").click(function () {
				var jsonObj = {"OPNAME": "testname","APPLYNO": "AbbrOP01","OPACID": 3424,"OPAMT": 1000,"OPCURR": "CNY","OPCREA": "LJY","OPOWNR": "RFS","OPNEED": "XUQIU","OPCPTI": "MINGXE","OPCOMP": "LUOSHI","Shipto": "10001","Detail": [{"OUPROD": "WWREWS","OUMODE": "WERWED","OUQTY": 1,"OUEXPP": 1,"OUMINQ": 1}]};
				//var jsonStr = JSON.stringify(jsonObj);				
				//alert(jsonStr);
                $.ajax({
                    type: "POST",
                    contentType: "application/json; charset=utf-8",
					async: false,
					dataType: "json",
                    url: "http://localhost:8078/data.asmx/HelloWorld",
                    //data:{"jsonStr":"{\"account\": \"value1\",\"contant\": \"value2\"}"},
					data:JSON.stringify({"jsonStr":JSON.stringify(jsonObj)}),
                    success: function (data) {
                      alert(data.d);
                  	},
                     error: function (data) {
                     alert($.parseJSON(data.responseText).Message);},
                });
            });