Java Spring 引导应用程序无法从 json 文件中提取数据

Question

I created rest api in spring boot including Gradle support. The jdk version is 17. I am trying to extract the data from jason file by accessing rest methods such as GET. I can see the application is running in localhost on port number 8080 by using tomcat server but the problem is when I issue the Get request with the parameters it showing following error.

{"error":"not-found-001","message":"1 not found"}

The request URL is: http://localhost:8080/result/1

Here is the json file code.

{
    "id": 2,
    "name": "Aberconwy",
    "seqNo": 1,
    "partyResults": [
        {
            "party": "LAB",
            "votes": 8994,
            "share": 33.00
        },
        {
            "party": "CON",
            "votes": 7924,
            "share": 29.10
        },
        {
            "party": "LD",
            "votes": 5197,
            "share": 19.10
        },
        {
            "party": "PC",
            "votes": 3818,
            "share": 14.00
        },
        {
            "party": "OTH",
            "votes": 517,
            "share": 1.90
        },
        {
            "party": "GRN",
            "votes": 512,
            "share": 1.90
        },
        {
            "party": "UKIP",
            "votes": 296,
            "share": 1.10
        }
    ]
}

Here is the Interface.

public interface ResultService {
    
    ConstituencyResult GetResult(Integer id);
    
    void NewResult(ConstituencyResult result);
    
    Map<Integer,ConstituencyResult> GetAll();
    
    void reset();
}

Here is the code in controller.

@RestController
public class ResultsController {

    private final ResultService results;

    public ResultsController(ResultService resultService) {
        this.results = resultService;
    }

    @GetMapping("/result/{id}")
    ConstituencyResult getResult(@PathVariable Integer id) {
        ConstituencyResult result = results.GetResult(id);
        if (result == null) {
            throw new ResultNotFoundException(id);
        }
        return results.GetResult(id);
    }

    @PostMapping("/result")
    ResponseEntity<String> newResult(@RequestBody ConstituencyResult result) {
        if (result.getId() != null) {
            results.NewResult(result);
            return ResponseEntity.created(URI.create("/result/"+result.getId())).build();
        }
        return ResponseEntity.badRequest().body("Id was null");
    }

    @GetMapping("/scoreboard")
    Scoreboard getScoreboard() {
        return new Scoreboard();
    }
}

Implementation of service.

@Component
public class MapBasedRepository implements ResultService {

    private final Map<Integer,ConstituencyResult> results;

    public MapBasedRepository() {
        results = new ConcurrentHashMap<>();
    }

    @Override
    public ConstituencyResult GetResult(Integer id) {
        return results.get(id);
    }

    @Override
    public void NewResult(ConstituencyResult result) {
        results.put(result.getId(), result);
    }

    @Override
    public Map<Integer, ConstituencyResult> GetAll() {
        return results;
    }

    @Override
    public void reset() {
        results.clear();
    }

    
    
}

Here is the test case.

@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
class ElectionsApiApplicationIntegrationTests {
    @LocalServerPort
    private int port;

    private URL base;

    @Autowired
    private ObjectMapper objectMapper;

    @Autowired
    private TestRestTemplate template;

    @Autowired
    private ResultService resultService;

    @BeforeEach
    public void setUp() throws Exception {
        this.base = new URL("http://localhost:" + port + "/");
    }

    @AfterEach
    public void reset() throws Exception {
        resultService.reset();
    }


    @Test
    public void first5Test() throws Exception {
        Scoreboard scoreboard = runTest(5);

        assertNotNull(scoreboard);
                
                System.out.println(1);
                
        // assert LD == 1
        // assert LAB = 4
        // assert winner = noone
    }

    @Test
    public void first100Test() throws Exception {
            
        Scoreboard scoreboard = runTest(100);

                
                  assertNotNull(scoreboard);
                  
                  // assert LD == 12
        // assert LAB == 56
        // assert CON == 31
        // assert winner = noone
               
        
    }

    @Test
    public void first554Test() throws Exception {
        Scoreboard scoreboard = runTest(554);

        assertNotNull(scoreboard);
        // assert LD == 52
        // assert LAB = 325
        // assert CON = 167
        // assert winner = LAB
    }

    @Test
    public void allTest() throws Exception {
        Scoreboard scoreboard = runTest(650);

        assertNotNull(scoreboard);
        // assert LD == 62
        // assert LAB == 349
        // assert CON == 210
        // assert winner = LAB
        // assert sum = 650
    }


    private Scoreboard runTest(int numberOfResults) throws Exception {
        for (int i = 1; i <= numberOfResults; i++ ) {
            Class<?> clazz  = this.getClass();
            InputStream is = clazz.getResourceAsStream(String.format("/sample-election-results/result%s.json",String.format("%03d",i)));
            ConstituencyResult cr = objectMapper.readValue(is, ConstituencyResult.class);
            template.postForEntity(base.toString()+"/result", cr,String.class);
        }
        ResponseEntity<Scoreboard> scores = template.getForEntity(base.toString()+"/scoreboard", Scoreboard.class);
        return scores.getBody();
    }
}

Here is the screenshot of the result.

Answer 1

I don't know how ResultNotFoundException is implemented, but if {"error":"not-found-001","message":"1 not found"} is the message you receive from this Exception, you obviously don't have id = 1 in your json file and this is the reason of the exception