如何通过客户端 Java 代码获取 Google Web Toolkit 中的当前 URL？
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How can I get the current URL in Google Web Toolkit via client side Java code?
提问by Senseful
I'm trying to read the query arguments of the URLin client side Java code, but I can't figure out how to find the current URL in Java.
我试图在客户端 Java 代码中读取 URL 的查询参数，但我不知道如何在 Java 中找到当前的 URL。
When I tried using httpServletRequestas recommended in this question, it says that it cannot be resolved and it doesn't offer adding an import statement.
当我尝试httpServletRequest按照此问题中的建议使用时，它说无法解决并且不提供添加导入语句。
I'm using Google Web Toolkit with Google App Engine.
我将 Google Web Toolkit 与 Google App Engine 一起使用。
回答by Bert F
Look at Window.Location:
public static class Window.Location
This class provides access to the browser's location's object. The location object contains information about the current URL and methods to manipulate it. Location is a very simple wrapper, so not all browser quirks are hidden from the user.
此类提供对浏览器位置对象的访问。location 对象包含有关当前 URL 和操作它的方法的信息。位置是一个非常简单的包装器，因此并非所有浏览器怪癖都对用户隐藏。
There are a number of methods to retrieve info about the URL, including one to get the whole thing (getHref()) or get the constituent components (e.g. getProtocol(), getHost(), getHostName(), etc).
有许多方法来检索有关的URL信息，其中包括让整个事情（getHref()）或获得的组成部件（例如getProtocol()，getHost()，getHostName()等）。
Since you say you want to read the query arguments, you probably want one of these:
由于您说要阅读查询参数，因此您可能需要以下其中一项：
static java.lang.String getQueryString()
Gets the URL's query string.
static java.lang.String getParameter(java.lang.String name)
Gets the URL's parameter of the specified name
static java.util.Map<java.lang.String,java.util.List<java.lang.String>> getParameterMap()
Returns a Map of the URL query parameters for the host page; since changing the map would not change the window's location, the map returned is immutable.
