我想自动完成＆＃34; SameAs＆＃34;使用dbpedia搜索结果作为源输入。 我完成了下一个JS代码。但是我没有得到任何结果。
<script>
$(document).ready(function () {
$("#SameAs").autocomplete({
source: function (request, response) {
$.ajax({
url: "http://lookup.dbpedia.org/api/search.asmx/PrefixSearch?QueryClass=place&MaxHits=20",
/*dataType: "json",
accepts: 'application/json',*/
data: {
QueryString: request.term
},
success: function (data) {
response(data);
}
});
},
minLength: 1,
select: function (event, ui) {
$("#SameAs").text(ui.item.Label);
}
});
});
</script>
对于术语“berlin＆＃39;”，dbpedia将返回此类结果：
<?xml version="1.0" encoding="utf-8"?>
<ArrayOfResult
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns="http://lookup.dbpedia.org/">
<Result>
<Label>Berlin</Label>
<URI>http://dbpedia.org/resource/Berlin</URI>
<Description>
Berlin is the capital city of Germany and one of the 16 states of Germany. With a population of 3.5 million people, Berlin is Germany's largest city and is the second most populous city proper and the eighth most populous urban area in the European Union. Located in northeastern Germany, it is the center of the Berlin-Brandenburg Metropolitan Region, which has 5.9 million residents from over 190 nations. Located in the European Plains, Berlin is influenced by a temperate seasonal climate.
</Description>
<Classes>
<Class>
<Label>settlement</Label>
<URI>http://dbpedia.org/ontology/Settlement</URI>
</Class>
<Class>
<Label>place</Label>
<URI>http://dbpedia.org/ontology/Place</URI>
</Class>
<Class>
<Label>populated place</Label>
<URI>http://dbpedia.org/ontology/PopulatedPlace</URI>
</Class>
<Class>
<Label>city</Label>
<URI>http://schema.org/City</URI>
</Class>
<Class>
<Label>owl#Thing</Label>
<URI>http://www.w3.org/2002/07/owl#Thing</URI>
</Class>
<Class>
<Label>place</Label>
<URI>http://schema.org/Place</URI>
</Class>
<Class>
<Label>city</Label>
<URI>http://dbpedia.org/ontology/City</URI>
</Class>
</Classes>
<Categories>
<Category>
<Label>Populated places established in the 13th century</Label>
<URI>http://dbpedia.org/resource/Category:Populated_places_established_in_the_13th_century</URI>
</Category>
<Category>
<Label>European Capitals of Culture</Label>
<URI>http://dbpedia.org/resource/Category:European_Capitals_of_Culture</URI>
</Category>
<Category>
<Label>States of Germany</Label>
<URI>http://dbpedia.org/resource/Category:States_of_Germany</URI>
</Category>
<Category>
<Label>City-states</Label>
<URI>http://dbpedia.org/resource/Category:City-states</URI>
</Category>
<Category>
<Label>Host cities of the Summer Olympic Games</Label>
<URI>http://dbpedia.org/resource/Category:Host_cities_of_the_Summer_Olympic_Games</URI>
</Category>
<Category>
<Label>Members of the Hanseatic League</Label>
<URI>http://dbpedia.org/resource/Category:Members_of_the_Hanseatic_League</URI>
</Category>
<Category>
<Label>Capitals in Europe</Label>
<URI>http://dbpedia.org/resource/Category:Capitals_in_Europe</URI>
</Category>
<Category>
<Label>States and territories established in 1237</Label>
<URI>http://dbpedia.org/resource/Category:States_and_territories_established_in_1237</URI>
</Category>
<Category>
<Label>Berlin</Label>
<URI>http://dbpedia.org/resource/Category:Berlin</URI>
</Category>
<Category>
<Label>German state capitals</Label>
<URI>http://dbpedia.org/resource/Category:German_state_capitals</URI>
</Category>
</Categories>
<Templates></Templates>
<Redirects></Redirects>
<Refcount>18984</Refcount>
</Result>
<Result>
<Label>Berlin Wall</Label>
<URI>http://dbpedia.org/resource/Berlin_Wall</URI>
<Description>
The Berlin Wall was a barrier constructed by the German Democratic Republic starting on 13 August 1961, that completely cut off West Berlin from surrounding East Germany and from East Berlin. The barrier included guard towers placed along large concrete walls, which circumscribed a wide area (later known as the "death strip") that contained anti-vehicle trenches, "fakir beds" and other defenses.
</Description>
<Classes>
<Class>
<Label>architectural structure</Label>
<URI>http://dbpedia.org/ontology/ArchitecturalStructure</URI>
</Class>
<Class>
<Label>place</Label>
<URI>http://dbpedia.org/ontology/Place</URI>
</Class>
<Class>
<Label>building</Label>
<URI>http://dbpedia.org/ontology/Building</URI>
</Class>
<Class>
<Label>owl#Thing</Label>
<URI>http://www.w3.org/2002/07/owl#Thing</URI>
</Class>
<Class>
<Label>place</Label>
<URI>http://schema.org/Place</URI>
</Class>
</Classes>
<Categories>
<Category>
<Label>Former buildings and structures of Germany</Label>
<URI>http://dbpedia.org/resource/Category:Former_buildings_and_structures_of_Germany</URI>
</Category>
<Category>
<Label>Allied occupation of Germany</Label>
<URI>http://dbpedia.org/resource/Category:Allied_occupation_of_Germany</URI>
</Category>
<Category>
<Label>20th century in Germany</Label>
<URI>http://dbpedia.org/resource/Category:20th_century_in_Germany</URI>
</Category>
<Category>
<Label>Revolution landmarks</Label>
<URI>http://dbpedia.org/resource/Category:Revolution_landmarks</URI>
</Category>
<Category>
<Label>History of East Germany</Label>
<URI>http://dbpedia.org/resource/Category:History_of_East_Germany</URI>
</Category>
<Category>
<Label>Inner German border</Label>
<URI>http://dbpedia.org/resource/Category:Inner_German_border</URI>
</Category>
<Category>
<Label>Walls</Label>
<URI>http://dbpedia.org/resource/Category:Walls</URI>
</Category>
<Category>
<Label>Eastern Bloc</Label>
<URI>http://dbpedia.org/resource/Category:Eastern_Bloc</URI>
</Category>
<Category>
<Label>Anti-communism</Label>
<URI>http://dbpedia.org/resource/Category:Anti-communism</URI>
</Category>
<Category>
<Label>1961 in politics</Label>
<URI>http://dbpedia.org/resource/Category:1961_in_politics</URI>
</Category>
<Category>
<Label>1989 disestablishments</Label>
<URI>http://dbpedia.org/resource/Category:1989_disestablishments</URI>
</Category>
<Category>
<Label>1961 in military history</Label>
<URI>http://dbpedia.org/resource/Category:1961_in_military_history</URI>
</Category>
<Category>
<Label>1961 establishments</Label>
<URI>http://dbpedia.org/resource/Category:1961_establishments</URI>
</Category>
<Category>
<Label>Buildings and structures completed in 1961</Label>
<URI>http://dbpedia.org/resource/Category:Buildings_and_structures_completed_in_1961</URI>
</Category>
<Category>
<Label>Separation barriers</Label>
<URI>http://dbpedia.org/resource/Category:Separation_barriers</URI>
</Category>
<Category>
<Label>Destroyed landmarks</Label>
<URI>http://dbpedia.org/resource/Category:Destroyed_landmarks</URI>
</Category>
<Category>
<Label>Berlin Wall</Label>
<URI>http://dbpedia.org/resource/Category:Berlin_Wall</URI>
</Category>
<Category>
<Label>History of Berlin</Label>
<URI>http://dbpedia.org/resource/Category:History_of_Berlin</URI>
</Category>
</Categories>
<Templates></Templates>
<Redirects></Redirects>
<Refcount>1406</Refcount>
</Result>
我认为问题在于自动完成功能无法识别jQuery xml结果。我需要xml结果的主要项目是Label和URI。
答案 0 :(得分：0)
根据此处的详细信息：https://github.com/dbpedia/lookup我会建议以下代码：
$(function() {
$("#SameAs").autocomplete({
source: function(request, response) {
console.log("Making request of dbpedia:" + request.term);
$.ajax({
url: "http://lookup.dbpedia.org/api/search/PrefixSearch",
dataType: "json",
data: {
QueryClass: "place",
MaxHits: 20,
QueryString: request.term
},
headers: {
Accept: "application/json"
},
method: "get",
success: function(data) {
console.log("Successful", data);
response(data.results);
}
});
},
minLength: 1,
select: function(event, ui) {
$("#SameAs").text(ui.item.Label);
}
});
});
根据文档，您使用的网址不正确。它应该是：http://lookup.dbpedia.org/api/search/PrefixSearch。它还提到：
默认情况下，所有数据都以XML格式返回，该服务还会将JSON返回到包含
Accept: application/json标题的任何请求。
因此我在AJAX参数中添加了headers选项。
进一步测试显示返回一个对象results作为元素。您需要将data.results返回response()。