Javascript 如何将Json字符串从mvc控制器传递到d3.js图表？

控制器：

    public ActionResult JsonString()
    {
        var p = new Parser("ALL");
        return Content(p.BuildJson());
    }

JSON:

Javascript:

        $.ajax({
        url: '@Url.Action("JsonString", "Dashboard")',
        type: 'GET',
        success: function (dat) {

        var data = jQuery.parseJSON(dat);

        var margin = { top: 20, right: 20, bottom: 30, left: 50 },
        width = @graphWidth - margin.left - margin.right,
        height = @graphHeight - margin.top - margin.bottom;

        var parseDate = d3.time.format("%d-%b-%y").parse;

        var x = d3.time.scale()
            .range([0, width]);

        var y = d3.scale.linear()
            .range([height, 0]);

        var xAxis = d3.svg.axis()
            .scale(x)
            .orient("bottom");

        var yAxis = d3.svg.axis()
            .scale(y)
            .orient("left");

        var line = d3.svg.line()
            .x(function (d) { return x(d.date); })
            .y(function (d) { return y(d.count); });

        var svg = d3.select("#chart").append("svg")
            .attr("width", width + margin.left + margin.right)
            .attr("height", height + margin.top + margin.bottom)
            .append("g")
            .attr("transform", "translate(" + margin.left + "," + margin.top + ")");

        d3.json = data; ??????????????????????????????????????????????????

        x.domain(d3.extent(data, function(d) { return d.date; }));
        y.domain(d3.extent(data, function(d) { return d.count; }));

        svg.append("g")
            .attr("class", "x axis")
            .attr("transform", "translate(0," + height + ")")
            .call(xAxis);

        svg.append("g")
            .attr("class", "y axis")
            .call(yAxis)
            .append("text")
            .attr("transform", "rotate(-90)")
            .attr("y", 6)
            .attr("dy", "1.21em")
            .style("text-anchor", "end")
            .style("font-size", "18px")
            .text("Occurences");

        svg.append("path")
            .datum(data)
            .attr("class", "line")
            .attr("d", line);

        svg.append("text")
            .attr("x", (width / 2))
            .attr("y", 50 - (margin.top))
            .attr("text-anchor", "middle")
            .style("font-size", "26px")
            .style("text-decoration", "underline")
            .text("Incidents/Time");

            alert(data);
            alert(dat);
        }

---

您只需执行以下操作：

public ActionResult JsonString()
{
    var p = new Parser("ALL");
    return Content(p.BuildJson(), "application/json");
}

---

提供

p.BuildJson（）

返回json字符串，不指定内容类型，它默认为

text/plain

，发布一些代码并让人们知道你的问题是什么。我想知道如何将json字符串传递到d3图表。行'd3.json=data；'这是不正确的尝试。

public ActionResult JsonString()
{
    var p = new Parser("ALL");
    return Content(p.BuildJson(), "application/json");
}