我无法找到最简单的方法来验证一个JSON字符串对一个​​给定的JSON字符串的模式（以供参考，这是在Java中，Android应用程序运行）。

I am having trouble finding the most simple way to validate a JSON String against a given JSON-schema String (for reference, this is in Java, running in an Android app).

在理想情况下，我想只是传递一个JSON字符串和JSON-模式字符串，并返回一个布尔值，它是否通过了验证。通过搜索，我发现了以下2个有前途的库实现这一点：

Ideally, I'd like to just pass in a JSON String and a JSON-schema String, and it returns a boolean as to whether it passes the validation. Through searching, I have found the following 2 promising libraries for accomplishing this:

http://jsontools.berlios.de/

https://github.com/fge/json-schema-validator

不过，第一个似乎相当过时较差的支持。我实现了库到我的项目，甚至与他们的JavaDoc，我无法告诉如何正确建立一个验证器对象进行验证。

However, the first one seems fairly outdated with poor support. I implemented the library into my project, and even with their JavaDocs, I was unable to tell how to properly build a "Validator" object for validation.

相似的故事：第二个，这似乎是向上最新与良好的测试code。但是，对于我想做的事情，这是非常简单的，这似乎是一个有点令人生畏和混乱，如何具体实现我想要的（即使在看ValidateServlet.java文件）。

Similar story with the 2nd one, which seems to be up-to-date with good test code. However, for what I want to do, which is very simple, it seems to be a bit daunting and confusing as to how to specifically accomplish what I want (even after looking at the ValidateServlet.java file).

好奇，如果任何人有一个很好的方式任何其他建议来完成这个（从它看起来是），即需要的，或者如果我也许需要坚持从上面的第二选择简单的任务？在此先感谢！

Curious if anyone has any other suggestions on a good way to accomplish this (from what it seems), simple task that need, or if I perhaps need to stick with the 2nd option from above? Thanks in advance!

推荐答案

实际上这也正是这个Servlet您链接到呢，所以它可能不是一个班轮，但它仍然是前pressive。

This is essentially what the Servlet you linked to does, so it may not be a one-liner but it still is expressive.

useV4 和 USEID 作为servlet的指定，对指定的验证选项默认起草V4 和使用ID为解决。

useV4 and useId as specified on the servlet, are for specifying validations option for Default to draft v4 and Use id for addressing.

您可以在网上看到：http://json-schema-validator.herokuapp.com/

public boolean validate(String jsonData, String jsonSchema, boolean useV4, boolean useId) throws Exception {
   // create the Json nodes for schema and data
   JsonNode schemaNode = JsonLoader.fromString(jsonSchema); // throws JsonProcessingException if error
   JsonNode data = JsonLoader.fromString(jsonData);         // same here

   JsonSchemaFactory factory = JsonSchemaFactories.withOptions(useV4, useId);
   // load the schema and validate
   JsonSchema schema = factory.fromSchema(schemaNode);
   ValidationReport report = schema.validate(data);

   return report.isSuccess();
}