使用 Java 创建 URL - 最佳实践是什么?

问题描述

我有一个正在调用休息服务的应用程序.我需要向它传递一个 URL，现在我正在通过连接一个字符串来创建 URL.

I have an application that is calling a rest service. I need to pass it a URL and right now I'm creating the URL by concatenating a string.

我是这样做的:

String urlBase = "http:/api/controller/";
String apiMethod = "buy";
String url = urlBase + apiMethod;

以上显然是假的，但重点是我使用的是简单的字符串连接.

The above is fake obviously, but the point is I'm using simple string concats.

这是最佳做法吗?我对 Java 比较陌生.我应该构建一个 URL 对象吗?

Is this the best practice? I'm relatively new to Java. Should I be building a URL object instead?

谢谢

推荐答案

如果您有一个需要添加一些额外字符串的基本路径，您有两个选择:

if you have a base path which needs some additional string to be added to it you have 2 options:

首先是使用String.format():

String baseUrl = "http:/api/controller/%s"; // note the %s at the end
String apiMethod = "buy";
String url = String.format(baseUrl, apiMethod);

或者使用String.replace():

String baseUrl = "http:/api/controller/{apiMethod}";
String apiMethod = "buy";
String url = baseUrl.replace("\\{apiMethod}", apiMethod);

这两个答案的好处是，需要插入的字符串不必在末尾.

The nice thing about both answers is, that the string that needs to be inserted, doesn't have to be at the end.

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