How to Fix: How to use LocalDateTime RequestParam in Spring? I get "Failed to convert String to LocalDateTime"
Use @DateTimeFormat to specify the format of your LocalDateTime parameter.
📋 Table of Contents
The error 'Failed to convert String to LocalDateTime' in Spring Boot occurs when the Jackson library is unable to parse a string into a Java 8 Date/Time object. This can happen if the date format used in the RequestParam annotation does not match the format of the data being sent in the HTTP request.
🛑 Root Causes of the Error
- The date format used in the RequestParam annotation does not match the format of the data being sent in the HTTP request.
✅ Best Solutions to Fix It
Method 1: Use a Custom Date Format
- Step 1: Add the following configuration to your application.properties file:
<bean class="org.springframework.boot.autoconfigure.web.servlet.WebMvcConfigurer"> <bean class="org.springframework.http.server.server.HttpServerHttpRequestHandler"/> <setRequestHeaderMapper> org.springframework.http.server.server.HttpServerHttpRequestHeaderMapper </setRequestHeaderMapper> </bean>This configuration tells Jackson to use a custom date format for the LocalDateTime type.
Method 2: Use @DateTimeFormat with Iso
- Step 1: Update the @RequestParam annotation to use the @DateTimeFormat annotation with the iso format:
@GetMapping("/test") public Page<User> get( @RequestParam(value = "start", required = false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME) LocalDateTime start) { //... }This configuration tells Jackson to use the ISO date format for the LocalDateTime type.
🎯 Final Words
By following these methods, you should be able to fix the 'Failed to convert String to LocalDateTime' error in your Spring Boot application.
❓ Frequently Asked Questions
🛠️ Related Fixes
How to Fix: Stuck in tutorial hell after 4 years: How do I b
Learn to build websites and think independently with coding skills.
How to Fix: Trying to sync mutliple audio tracks to a movie
Complex audio track synchronization can be challenging due to the larg
How to Fix: Failed to merge latest branches from upstream re
Update local repository with latest upstream branches.