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How can I convert a Stream of Mono to Flux

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日久生厌 2021-01-24 01:44

I have a method that try use WebClient to return a Mono

    @GetMapping(\"getMatch\")
    public Mono getMatch(@RequestParam Long matchId) {
               


        
      
      
      

        

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                (楼主)
            
              
                  
    
                2021-01-24 02:27
              
    

            
    
            
    
              
              

    Probably, what you need is the following:
    


    @GetMapping("getMatches")
public Flux getMatches(@RequestParam String matchesId) {
    List matchesList = JSON.parseArray(matchesId, Long.class);
    return Flux.fromStream(matchesList.stream())
               .flatMap(this::getMatch);
}



    Instead of:
    


    @GetMapping("getMatches")
public Flux getMatches(@RequestParam String matchesId) {
    List matchesList = JSON.parseArray(matchesId, Long.class);
    return Flux.fromStream(matchesList.parallelStream().map(this::getMatch));
}



    Notes:
    


      

    • Basically, you expect getMatches endpoint to return Flux. However, as it is written - it actually returns Flux>, therefore you see the strange output. To get Flux, I suggest, first, create Flux that are match ids, and then flatMap the result of calling getMatch (that returns Mono), this finally gives Flux.
      

    • Also, there is no need to use parallelStream(). Because you're already using reactor, everything will be performed concurrently on reactor scheduler.
      • 

    
      
             
      
                                                        
      
            
            
      
              
                
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