How to resolve request mapping “ambiguous” situation in spring controller?

问题

I have written a spring controller in which I just wanted to use single URL for all methods. Even I am using different method signature int, string, object i am getting error.

@RequestMapping(value="problemAPI/ticket", method = RequestMethod.GET )
public @ResponseBody String getTicketData(@RequestParam("customerId") int customerId) {
    return "customer Id: "+customerId+" has active Ticket:1010101";
}

@RequestMapping(value="problemAPI/ticket", method = RequestMethod.GET )
public @ResponseBody String getTicketStatusByCustname(@RequestParam("customerName") String customerName) {  
    return "Mr." + customerName + " Your Ticket is Work in Progress";
}

@RequestMapping(value="problemAPI/ticket", method = RequestMethod.POST )
public @ResponseBody String saveTicket(@RequestBody TicketBean bean) {
    return "Mr." + bean.getCustomerName() + " Ticket" +  bean.getTicketNo() + " has been submitted successfuly";
}

Error:

java.lang.IllegalStateException: Ambiguous mapping found. Cannot map 'problemTicketController' bean method 
public String com.nm.controller.webservice.ticket.problem.ProblemTicketController.getTicketData(int)
to {[/problemAPI/ticket],methods=[GET],params=[],headers=[],consumes=[],produces=[],custom=[]}: There is already 'problemTicketController' bean method
public java.lang.String com.nm.controller.webservice.ticket.problem.ProblemTicketController.getTicketByCustname(int) mapped.

回答1:

You can achieve this by explicitly specifying query parameters with params annotation property:

@RequestMapping(value = "problemAPI/ticket", params="customerId", method = RequestMethod.GET)
public @ResponseBody String getTicketData(@RequestParam("customerId") int customerId){
    return "customer Id: " + customerId + " has active Ticket:1010101";
}

@RequestMapping(value = "problemAPI/ticket", params="customerName", method = RequestMethod.GET)
public @ResponseBody String getTicketStatusByCustname(@RequestParam("customerName") String customerName){
    return "Mr." + customerName + " Your Ticket is Work in Progress";
}

To make it cleaner you can use alias annotations like @GetMapping and @PostMapping:

@GetMapping(value="problemAPI/ticket", params="customerName")
public @ResponseBody String getTicketStatusByCustname(@RequestParam("customerName") String customerName)

@PostMapping(value="problemAPI/ticket")
public @ResponseBody String saveTicket(@RequestBody TicketBean bean) {
    return "Mr." + bean.getCustomerName() + " Ticket" +  bean.getTicketNo() + " has been submitted successfuly";
}

来源：https://stackoverflow.com/questions/44429656/how-to-resolve-request-mapping-ambiguous-situation-in-spring-controller

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java

Spring

spring-mvc