[GitHub] [incubator-dolphinscheduler] felix-thinkingdata opened a new pull request #3552: [Fix-3299][dao&server] Fix 3299,when Json string parsing problem caused by non-standard json format.

[GitBox]

felix-thinkingdata opened a new pull request #3552:
URL: https://github.com/apache/incubator-dolphinscheduler/pull/3552


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   ## What is the purpose of the pull request
   
   fix #3299
    Json string parsing problem caused by non-standard json format.
   
   Fixed alert cannot be notified，when master or worker shutdown。
   I think the reason for this is that Jackson can't parse JSON fields with 
single quotes.
   
   The main reason is that the strings stored in the database are not in the 
standard JSON format.
   
   fix before :
   
![image](https://user-images.githubusercontent.com/59079269/90605706-4d841c80-e231-11ea-8757-03e37a827c35.png)
   
   fix after ：
   
![image](https://user-images.githubusercontent.com/59079269/90605781-67256400-e231-11ea-9278-2dadbcce633f.png)
   
   
   
   
   
   


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