Question

我想在JSONArrays中以JSonobject的身份返回3 success response和ajax。

我创建了

out.print(jarrayTable);
out.print(jarrayChartTotalMF);
out.print(jarrByAgeGroup);
out.print(objTotal);

我不知道如何在ajax - jquery中获取数据。我尝试用一个JSONArray来运行程序，它完全有效，但是

我不知道如何在arrays and a object and parsing

中的jquery变量中创建多个return success of ajax.个

String json1 = new Gson().toJson(jarrayTable);
String json2 = new Gson().toJson(objTotal);
String json3 = new Gson().toJson(jarrayChartTotalMF);
String json4 = new Gson().toJson(jarrByAgeGroup);

response.setContentType("application/json");
response.setCharacterEncoding("utf-8");
String AllJson = "[" + json1 + "," + json2  + "," + json3  + "," + json4 + "]"; //Put both objects in an array of 2 elements


response.getWriter().write(AllJson);

我也尝试过这样做，但我不知道如何解析jquery中的数据

[{"ByAgeGroupSexTable":[{"BothSexes":42,"AgeGroup":"Under 1","ApprovedBy":"Geraldine Atayan","Male":25,"Female":17,"location":"Barangay 1","UploadedBy":"Shermaine Sy"},{"BothSexes":42,"AgeGroup":"Under 1","ApprovedBy":"Geraldine Atayan","Male":25,"Female":17,..."arrByAgeGroup":[{"arrByAgeGroupBothSexes":0,"arrByAgeGroupMale":25,"arrByAgeGroupFemale":17,"arrByAgeGrouplocation":"Barangay 1","arrByAgeGroupAgeGroup":"Under 1"},{"arrByAgeGroupBothSexes":0,"arrByAgeGroupMale":25,"arrByAgeGroupFemale":17,"arrByAgeGrouplocation":"Barangay...

我目前得到了这些结果，我如何获取jquery中的数据

console.log(JSON.stringify(data));

这是我使用console.log("HELLO" +print[0].ByAgeGroupSexTable[0].location);在控制台上打印出来的内容，但是当我尝试获取变量/数据error时，这就是Cannot read property '0' of undefined $("#archived tbody").on("click", 'input[type="button"]', (function () { var censusYear = $(this).closest("tr").find(".nr").text(); alert(censusYear); var page = document.getElementById('page').value; $.ajax({ url: "SetDataServlet", type: 'POST', dataType: "JSON", data: { censusYear: censusYear, page: page }, success: function (data) { console.log(JSON.stringify(data)); var print = JSON.stringify(data); console.log("HELLO" +print[0].ByAgeGroupSexTable[0].location); ...some other codess }, error: function (XMLHttpRequest, textStatus, exception) { alert(XMLHttpRequest.responseText); } }); }));

这是我的JS代码

ng-controller="mainController as ctrl"

Answer 1

你可以这样试试。我不知道在那些arraylist中推送了什么样的对象。

ArrayList<Object> allList = new ArrayList<>();

ArrayList<Object> jarrayTable = new ArrayList<Object>();
ArrayList<Object> jarrayChartTotalMF = new ArrayList<Object>();
ArrayList<Object> jarrByAgeGroup = new ArrayList<Object>();
JsonObject objTotal= new JsonObject();

allList.add(objTotal);
allList.add(jarrayTable);
allList.add(jarrayChartTotalMF);
allList.add(jarrByAgeGroup);
String allJSON = new Gson().toJson(allList);

response.setContentType("application/json");
response.setCharacterEncoding("utf-8");

se.getWriter().write(allJSON);

output1：

 [{},[],[],[]]

或

HashMap<String, Object> allList = new HashMap();
ArrayList<Object> jarrayTable = new ArrayList<Object>();

ArrayList<Object> jarrayChartTotalMF = new ArrayList<Object>();
ArrayList<Object> jarrByAgeGroup = new ArrayList<Object>();
JsonObject objTotal= new JsonObject();

allList.put("obj", objTotal);
allList.put("arr1",jarrayTable);
allList.put("arr2",jarrayChartTotalMF);
allList.put("arr3",jarrByAgeGroup);

String allJSON = new Gson().toJson(allList);

OUTPUT2

{"obj":{},"arr2":[],"arr1":[],"arr3":[]}

Answer 2

这一行

var print = JSON.stringify(data);     //just remove JSON.stringify()

将对象转换为字符串，以便您无法访问它。您现在可以轻松访问该对象

$("#archived tbody").on("click", 'input[type="button"]', (function () {
    var censusYear = $(this).closest("tr").find(".nr").text();
    alert(censusYear);
    var page = document.getElementById('page').value;
    $.ajax({
        url: "SetDataServlet",
        type: 'POST',
        dataType: "JSON",
        data: {
            censusYear: censusYear,
            page: page
        },
        success: function (data) {
            console.log(JSON.stringify(data));
            var print = data;      
            console.log("HELLO" +print[0].ByAgeGroupSexTable[0].location)

        }, error: function (XMLHttpRequest, textStatus, exception) {
            alert(XMLHttpRequest.responseText);
        }
    });
}));

多个JsonArrays和JSONobject为Ajax返回成功？

2 个答案: