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How to resolve Content type 'application/x-www-form-urlencoded;charset=UTF-8' not supported in your Spring Boot project
  • 23 May, 2023
    • how-to-series

How to resolve Content type 'application/x-www-form-urlencoded;charset=UTF-8' not supported in your Spring Boot project

Most probably you have encounter the following error, while waiting response from other services(for instance it could be payment response from the …

How to validate object programmatically in Spring Boot
  • 19 May, 2023
    • how-to-series

How to validate object programmatically in Spring Boot

Validating objects is crucial to ensure data integrity and prevent errors in subsequent layers of the application. While the @Valid annotation is …

How to convert JSON into generic Java classes using Jackson (avoiding error LinkedHashMap cannot be cast to ...)
  • 19 Apr, 2023
    • how-to-series

How to convert JSON into generic Java classes using Jackson (avoiding error LinkedHashMap cannot be cast to ...)

Jackson is a popular Java library for working with JSON. Even it is easy to use, when converting a JSON string to a generic Java class, such as …

How to resolve -- /var/lib/nginx/tmp/ Permission Denied Error
  • 02 Jun, 2021
    • how-to-series

How to resolve -- /var/lib/nginx/tmp/ Permission Denied Error

Recently I have encountered this error. Problem is that: user that runs nginx service has no permission to access /var/lib/nginx/tmp file. Example: …

How to resolve -- PR_CONNECT_RESET_ERROR
  • 23 May, 2021
    • how-to-series

How to resolve -- PR_CONNECT_RESET_ERROR

This error might releted to your Nginx configuration(at least problem was the nginx for me) After enable the SSL connection and try to connect from …

How to resolve -- Invalid Cors Request In Spring Boot
  • 13 May, 2021
    • how-to-series
    • spring-boot

How to resolve -- Invalid Cors Request In Spring Boot

Recently I have encountered this error. And I can not send any request even I have setup corsConfiguration.setAllowedOrigins("*") . Response …

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