如何在Java Play框架中获取查询字符串参数? [英] How to get query string parameters in java play framework?

问题描述

我对Java Play框架很陌生.我已经设置了所有普通的路由，例如/something/:somthingValue以及所有其他路由.现在，我想创建route接受

I'm very new to java play framework. I've set up all the normal routes like /something/:somthingValue and all the others. Now I want to create route the accepts query parameters like

/something?x = 10& y = 20& z = 30

/something?x=10&y=20&z=30

我想在?"之后获取所有参数.作为键==>值对.

Here I want to get all the params after "?" as key==>value pair.

推荐答案

您可以将查询参数连接到路由文件中:

You can wire in your query parameters into the routes file:

http://www.playframework.com/documentation/2.0.4/JavaRouting 在具有默认值的参数"部分中

http://www.playframework.com/documentation/2.0.4/JavaRouting in section "Parameters with default values"

或者您可以在操作"中要求他们:

Or you can ask for them in your Action:

public class Application extends Controller {

    public static Result index() {
        final Set<Map.Entry<String,String[]>> entries = request().queryString().entrySet();
        for (Map.Entry<String,String[]> entry : entries) {
            final String key = entry.getKey();
            final String value = Arrays.toString(entry.getValue());
            Logger.debug(key + " " + value);
        }
        Logger.debug(request().getQueryString("a"));
        Logger.debug(request().getQueryString("b"));
        Logger.debug(request().getQueryString("c"));
        return ok(index.render("Your new application is ready."));
    }
}

例如http://localhost:9000/?a=1&b=2&c=3&c=4在控制台上打印:

[debug] application - a [1]
[debug] application - b [2]
[debug] application - c [3, 4]
[debug] application - 1
[debug] application - 2
[debug] application - 3

请注意，c在网址中是两次.

Note that c is two times in the url.

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