Spring 中的分页通过路径变量引导 - Controller 请求映射注释中不存在请求的路径变量

Question

We are trying to do pagination with the help of this

<dependency>
    <groupId>net.kaczmarzyk</groupId>
    <artifactId>specification-arg-resolver</artifactId>
    <version>2.1.1</version>
</dependency>

With request parameters its fine, but when we try with Path variables its giving exception saying

Requested path variable {destUserId} is not present in Controller request mapping annotations

The following are the methods we tried

Method-1: With @PathVariable

@RequestMapping(method = RequestMethod.GET, value = "/cf/{destUserId}")
@ResponseBody
public PagedResponse<SystemStock> croudFundReport(@PathVariable(name = "destUserId") String eventId,
            @Conjunction (value = {
            @Or(value = @Spec(path = "metaType", params = {"meta_type"}, spec = Equal.class))},
            and = @Spec(path = "destUserId", pathVars = "destUserId", spec = Equal.class)) Specification<UserData> spec) {
        
        
    return null;
}

Method-2: Without @PathVariable

@RequestMapping(method = RequestMethod.GET, value = "/cf/{destUserId}")
@ResponseBody
public PagedResponse<SystemStock> croudFundReport(@Conjunction (value = {
            @Or(value = @Spec(path = "metaType", params = {"meta_type"}, spec = Equal.class))},
            and = @Spec(path = "destUserId", pathVars = "destUserId", spec = Equal.class)) Specification<UserData> spec) {
        
        
    return null;
}

Method-3: RequestMapping with just path and with @PathVariable

@RequestMapping("/cf/{destUserId}")
@ResponseBody
public PagedResponse<SystemStock> croudFundReport(@PathVariable(name = "destUserId") String eventId,
            @Conjunction (value = {
            @Or(value = @Spec(path = "metaType", params = {"meta_type"}, spec = Equal.class))},
            and = @Spec(path = "destUserId", pathVars = "destUserId", spec = Equal.class)) Specification<UserData> spec) {
        
        
    return null;
}

Method-4: RequestMapping with just path and without @PathVariable

@RequestMapping("/cf/{destUserId}")
@ResponseBody
public PagedResponse<SystemStock> croudFundReport(@Conjunction (value = {
            @Or(value = @Spec(path = "metaType", params = {"meta_type"}, spec = Equal.class))},
            and = @Spec(path = "destUserId", pathVars = "destUserId", spec = Equal.class)) Specification<UserData> spec) {
        
        
    return null;
}

Method-5: RequestMapping with just path, without @PathVariable, without @Conjunction

@RequestMapping("/cf/{destUserId}")
@ResponseBody
public PagedResponse<SystemStock> croudFundReport(@Spec(path = "destUserId", pathVars = "destUserId", spec = Equal.class) Specification<UserData> spec) {
        
    
    return null;
}

Method-6: GetMapping without @PathVariable, without @Conjunction

@GetMapping(path = "/cf/{destUserId}", produces = MediaType.APPLICATION_JSON_VALUE)
@ResponseBody
public PagedResponse<SystemStock> croudFundReport(@Spec(path = "destUserId", pathVars = "destUserId", spec = Equal.class) Specification<UserData> spec) {
    
    
    return null;
}

References

1. Path variable support
2. @PathVariable issue

The problem is we can access the PathVariable as a method argument, but when we try to specify it in that in pathVars in the above cases execution is not reaching our Controller and we are getting the same above exception. Any help?

Answer 1

One thing I noticed you used GetMapping only in the last example. Is there reason for using RequestMapping?

Is there a specific reason to not use [JPA pagination][https://www.baeldung.com/jpa-pagination]?

Have you tried the following?

@GetMapping(path = "/cf/{destUserId}", produces = MediaType.APPLICATION_JSON_VALUE)
public PagedResponse<SystemStock> croudFundReport( @PathVariable(name = "destUserId") final String destUserId) {
 // TODO implementation
}