4

我想使用 JQuery 将一组位置发送到 REST 服务。

我的代码

var locations = new Array();
var loc = new Location();
loc.alt = 0;
loc.lat = 0;
loc.long = 0;
loc.time = 1;

locations.push(loc);

var json_data = {value : JSON.stringify(locations)};
console.log(json_data);

$.ajax({type: 'POST',
        url: rootURL + '/Location/123',
        crossDomain: true,
        dataType: "json", // data type of response
        contentType: "application/json; charset=utf-8",
        data: json_data,
        success: function(data, textStatus, jqXHR) {
            console.log('testAddLocations erfolgreich');
        },
        error: function(jqXHR, textStatus, errorThrown) {
            console.log('testAddLocations Fehler');
        }
    });

REST服务

@POST
@Produces({ MediaType.APPLICATION_JSON })
@Path("{tripID}")
public Response addLocations(@PathParam("tripID") final String tripID, Location[] value) {

但我得到一个 HTTP-500 错误。在服务器上:

SCHWERWIEGEND: The RuntimeException could not be mapped to a response, re-throwing to the HTTP container
JsonFormatException{text=v, line=1, column=1}
at com.sun.jersey.json.impl.reader.JsonLexer.yylex(JsonLexer.java:662)
at com.sun.jersey.json.impl.reader.JsonXmlStreamReader.nextToken(JsonXmlStreamReader.java:162)
4

1 回答 1

0

我假设这是因为您发送数据的格式。您发布的数据不应该是整个字符串化的 JSON 吗?(包括value通常应该是location哪个?)

我的意思是 Jersey 使用不同的JSON 表示法来序列化/反序列化消息,因此,例如,如果您使用 MAPPED 表示法,您应该发送如下内容:

{"location":[
    {"alt":1,"lat":2,"long":3,"time":4},
    {"alt":5,"lat":6,"long":7,"time":8}
]}

这意味着使用 jQuery 的代码如下:

$.ajax({
    data : JSON.stringify( 
    {"location" : [
        { alt: 1, lat: 2, long: 3, time: 4 },
        { alt: 5, lat: 6, long: 7, time: 8 }
    ]}),
    ....

对于自然符号,您应该发送:

[
    {"alt":1,"lat":2,"long":3,"time":4},
    {"alt":5,"lat":6,"long":7,"time":8}
]

这意味着代码如下:

$.ajax({
    data : JSON.stringify( 
    [
        { alt: 1, lat: 2, long: 3, time: 4 },
        { alt: 5, lat: 6, long: 7, time: 8 }
    ]),
    ...

查看默认行为的一种快速方法是将其添加到您的服务中并查看它返回的格式:

@GET
@Produces({ MediaType.APPLICATION_JSON })
@Path("/testNotation")
public Location[] getLocations() {
    return new Location[] { new Location(), new Location() };
}

有关一些额外信息,请参见此处:

http://jersey.java.net/nonav/documentation/latest/json.html
http://jersey.java.net/nonav/apidocs/1.17/jersey/com/sun/jersey/api/json/JSONConfiguration.html
http://jersey.java.net/nonav/apidocs/1.17/jersey/com/sun/jersey/api/json/JSONConfiguration.Notation.html
http://tugdualgrall.blogspot.ro/2011/09/jax-rs -jersey-and-single-element-arrays.html

于 2013-02-17T18:19:37.930 回答