java URIBuilder 和列表查询参数
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URIBuilder and list query params
提问by Tobia
I'm using apache URIBuilderto build a query string for a GET methodof a Rest service.
我正在使用 apache URIBuilder为Rest 服务的GET 方法构建查询字符串。
@RequestMapping(value="/remote")
public Return getTest(Ordine ordine) throws Exception{
...
}
This is the input object:
这是输入对象：
public class Ordine{
private List<String> codici;
//..get...set..
}
I cannot understand how to set this string list as query params.
我无法理解如何将此字符串列表设置为查询参数。
I tried to set param twice:
我试图设置参数两次：
URIBuilder builder = new URIBuilder()
.setHost("localhost")
.setPort(8080)
.setScheme("http")
.setPath("/remote")
.setParameter("codici", codicilist.get(0))
.setParameter("codici", codicilist.get(1));
But the first param it will be overwrite from the second. Then I tried to append [] in the param name:
但是第一个参数会被第二个参数覆盖。然后我尝试在参数名称中附加 []：
URIBuilder builder = new URIBuilder()
.setHost("localhost")
.setPort(8080)
.setScheme("http")
.setPath("/remote")
.setParameter("codici[]", codicilist.get(0))
.setParameter("codici[]", codicilist.get(1));
But it is simply sent with name "codici[]" and the first param is overwritten. Then I tried a comma separated values:
但它只是以名称“codici[]”发送，第一个参数被覆盖。然后我尝试了逗号分隔值：
URIBuilder builder = new URIBuilder()
.setHost("localhost")
.setPort(8080)
.setScheme("http")
.setPath("/remote")
.setParameter("codici", String.join(",",codicilist));
But if fails... how can I set a list of param?
但是如果失败...我如何设置参数列表？
采纳答案by Markus Wagner
In your expample, just use addParameterinstead of setParameter. setParameterwill override your parameter if it already exists. addParameterwill add a new one (ignoring existing ones).
在您的示例中，只需使用addParameter代替setParameter. setParameter如果它已经存在，将覆盖您的参数。addParameter将添加一个新的（忽略现有的）。
回答by Bunti
You can use addParametersmethod.
您可以使用addParameters方法。
URIBuilder builder = new URIBuilder()
.setHost("localhost")
.setPort(8080)
.setScheme("http")
.setPath("/remote").addParameters(buildParamList())
Then get all codiciparameter values with a helper method which will build a list of NameValuePairpairs.
然后codici使用一个辅助方法获取所有参数值，该方法将构建一个NameValuePair对列表 。
private List<NameValuePair> buildParamList() {
List<NameValuePair> output = new ArrayList<>();
for (String string : codici) {
output.add(new BasicNameValuePair("codici", string));
}
return output;
}
So you'll get an output similar to http://localhost:8080/remote?codici=codici1&codici=codici2&codici=codici3given that codicilist contains codici1, codici2, codici3
所以，你会得到类似的输出HTTP：//本地主机：8080 /远程codici = codici1＆codici = codici2＆codici = codici3因为codici列表中包含codici1，codici2，codici3
