Java 定义返回列表的REST端点

如何从控制器类返回列表

我当前的代码：

@PostMapping(value = Endpoint.RRESOURCE_customer_ID)
public ResponseEntity<customerDto> getLocationsByLocationIds(@RequestBody @Validated @RequestParam(name = "ids", required = true) List<Long> ids) {
      List<customerDto> customerListDto = customerService.findcustomerIds(ids);
      return ResponseEntity.ok(customerListDto);
}

我不确定下一个定义

public ResponseEntity<customerDto> getLocationsByLocationIds(@RequestBody @Validated @RequestParam(name ="ids", required = true) List<Long> ids)

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您应该按如下方式定义端点：

@PostMapping(value = Endpoint.RRESOURCE_customer_ID)
public List<CustomerDto> getLocationsByLocationIds(@RequestBody List<Long> ids) {
    return customerService.findcustomerIds(ids);
}

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请注意，不能将@RequestBody和@RequestParam都放在同一字段上。该字段是HTTP请求正文或HTTP请求参数。

您必须在ReponseEntity类中返回customerDto列表

@PostMapping(value = Endpoint.RRESOURCE_customer_ID)
@ResponseBody
public ResponseEntity<List<customerDto> > getLocationsByLocationIds(@RequestParam List<Long> ids) {
      List<customerDto> customerListDto = customerService.findcustomerIds(ids);
      return ResponseEntity.ok(customerListDto);
}

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如何使用ResponseBy向该方法发送请求？我只想用RestTemplate发送一个客户id的long列表，如[1,3,15]。你可以在这里看到例子

@PostMapping(value = Endpoint.RRESOURCE_customer_ID)
public List<CustomerDto> getLocationsByLocationIds(@RequestBody List<Long> ids) {
    return customerService.findcustomerIds(ids);
}

@PostMapping(value = Endpoint.RRESOURCE_customer_ID)
@ResponseBody
public ResponseEntity<List<customerDto> > getLocationsByLocationIds(@RequestParam List<Long> ids) {
      List<customerDto> customerListDto = customerService.findcustomerIds(ids);
      return ResponseEntity.ok(customerListDto);
}