Spring MVC @PathVariable被视为@RequestParam

Question

我有一个spring mvc API（在XML中配置），里面有多个服务。但是，当我尝试添加包含路径变量@RequestMapping的{​​{1}}的服务时，创建的资源不是我所期望的。

我的期望：

/{theCurrencyCode}

什么有效：

http://localhost:8080/api/v3/parameters/currencies/EUR

这是我的映射：

http://localhost:8080/api/v3/parameters/currencies/{theCurrencyCode}?theCurrencyCode=EUR

实施：

import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

import java.util.List;

import static org.springframework.http.MediaType.APPLICATION_JSON_VALUE;

@RequestMapping(value = "v3/", produces = { APPLICATION_JSON_VALUE })
public interface ParametersApi {

  @RequestMapping(
      value = "/parameters/currencies/{theCurrencyCode}",
      produces = { "application/json" },
      method = RequestMethod.GET)
  ResponseEntity<List<Currency>> GetCurrencies(@PathVariable("theCurrencyCode") String theCurrencyCode);

}

Swagger UI确认了这一点，将import org.springframework.beans.factory.annotation.Autowired; import org.springframework.http.HttpStatus; import org.springframework.http.ResponseEntity; import org.springframework.stereotype.Controller; import java.util.ArrayList; import java.util.List; @Controller public class ParametersApiController implements ParametersApi{ private final CurrenciesService service; @Autowired public ParametersApiController(CurrenciesService service) { this.service = service; } @Override public ResponseEntity<List<Currency>> GetCurrencies(String code) { final List<Currency> currencies = service.getCurrencies(code); return new ResponseEntity<>(currencies, HttpStatus.OK); } } 视为＆＃34;参数类型＆＃34; theCurrencyCode代替query。

如何让我的@PathVariable工作？

Answer 1

您的方法实现中缺少Pathvariable。 所以要修复，你需要写这样的东西：

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Controller;

import java.util.ArrayList;
import java.util.List;

@Controller
public class ParametersApiController implements ParametersApi{

    private final CurrenciesService service;

    @Autowired
    public ParametersApiController(CurrenciesService service) {
        this.service = service;
    }

    @Override
    public ResponseEntity<List<Currency>> GetCurrencies(@PathVariable String theCurrencyCode) {
        final List<Currency> currencies = service.getCurrencies(theCurrencyCode);
        return new ResponseEntity<>(currencies, HttpStatus.OK);
    }
}

Answer 2

带注释的方法参数未传递给所有实现。这就是为什么你需要重新声明它。

Answer 3

将您的界面更改为：

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>

<div ng-app="myApp" ng-controller="FirstCtrl">
    <input type="number" style="font-family: sans-serif" ng-model="application.version" placeholder="Version..." required>
    <button type="reset" ng-click="reset()">Clear </button>
</div>

您的路径变量名称和URL路径名称应匹配。无需在括号中指定参数名称。