这是我从我的服务中调用它的方法
addData(data) {
let _body = JSON.stringify(data);
let headers = new Headers({'Content-Type': 'application/json;charset=utf-8'});
let url = 'http://localhost:8080/obj/addData';
let requestoptions:RequestOptions = new RequestOptions({
method: RequestMethod.Post,
url: url,
headers: headers,
body : _body
});
console.log("test");
return this._http.request(new Request(requestoptions))
.map((res:Response) => {
console.log(res);
return res.json();
});
}
我添加了console.log以验证是否调用了该方法,因为虽然我调用了一个方法,但没有完成
答案 0 :(得分:2)
在angular2 http请求中,直到您订阅http调用。因此,如果您将订阅添加到您在服务上调用方法的位置,如下所示:
// In some component or service using your service
this.service.addData(data).subscribe(resp => console.log(resp));
然后,在这种情况下,您应该看到发出请求并在控制台中发布响应数据。
答案 1 :(得分:0)
因为 string t1 = "SELECT C1,C2,C3,C4,C5 FROM TEST";
string t2 = "SELECT C1,C2,C3 FROM TEST";
List<string> test = CompareSQLString(t1, t2,"TEST");
方法无法单独执行。鉴于您已经订阅tooltip.select('.label').html(donutChart());
function donutChart(){
var dataset = {
hddrives: [20301672448, 9408258048, 2147483648, 21474836480, 35622912,32212254720],
};
var width = 460,
height = 300,
radius = Math.min(width, height) / 2;
var color = d3.scale.ordinal()
.range(["#2DA7E2"]);
var pie = d3.layout.pie()
.sort(null);
var arc = d3.svg.arc()
.innerRadius(radius - 100)
.outerRadius(radius - 70);
var svg = d3.select("body").append("svg")
.attr("width", width)
.attr("height", height)
.append("g")
.attr("transform", "translate(" + width / 2 + "," + height / 2 + ")");
var path = svg.selectAll("path")
.data(pie(dataset.hddrives))
.enter().append("path")
.attr("class", "arc")
.attr("fill", function(d, i) { return color(i); })
.attr("d", arc);
svg.append("text")
.attr("dy", ".35em")
.style("text-anchor", "middle")
.attr("class", "inside")
.text(function(d) { return 'Test'; });
}
方法,我建议使用request
方法,而不是这样:
addData