使用Jackson检查JSON在JAVA中是否有效 [英] Check if JSON is valid in JAVA using Jackson

问题描述

我有一个JSON字符串，我将其作为字符串存储在DB中。在前端，我将此JSON渲染为对象。

I have a JSON string which I am storing it in DB as a string. In front-end, I am rendering this JSON as object.

我正在使用：

JSON.parse(string);  
Uncaught Syntax error: Unexpected Token  

字符串：

{
"id": "295cd59f-4033-438c-9bf4-c571829f134e",
"from": "Shrisha S.<[e-mail]>",
"to": [
    "Katie Porter <[e-mail]>"
],
"cc": [
    "Jack d<[e-mail]>,     Keerthi<[e-mail]>"
],
"bcc": [

 ]  
}

我有什么方法可以检查JSON在JAVA中是否有效？

Is there any way I can check If JSON is valid or not in JAVA?

这里需要注意的一点是，我没有为JSON定义的架构，我可以映射到它，即JSON可以容纳任何东西。

One thing to be noted here is that, I don't have a schema defined for JSON which I can map to, i.e. JSON can hold anything.

我目前正在尝试使用 JACKSON 但为此我需要一个我没有的预定义架构。无论如何这可以修复吗？

I am currently trying out with JACKSON but for that I need a pre-defined schema which I don't have. Is there anyway this can be fixed?

推荐答案

您可以将其作为JsonNode读取，无需将其映射到特定类，其通用：

You can read it as a JsonNode, no need to map it to a specific Class, its generic:

try{

  ObjectMapper objectMapper = ...;
  JsonNode jsonNode = objectMapper.readTree(yourJsonString);

} catch(JsonProcessingException e){........}

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