具有多个 @RequestParam 的 Spring Boot API 调用

Question

我需要查找日期范围之间的条目，并希望在 Spring Boot API 中进行 GET 调用，如下所示，

$ curl -X GET http://localhost:8080/api/v1/appointments/findWithRange?start=2018-10-01&end=2018-10-15

我编写了 GET 调用，

@GetMapping("/findWithRange")
    public ResponseEntity<List<Appointment>> findAllWithCreationRange(@RequestParam("start")  Date start, @RequestParam("end") Date end) {

        List<Appointment> appointments = service.findAllWithCreationRange(start, end);

        if (Objects.isNull(appointments)) {
            ResponseEntity.badRequest().build();
        }

        return ResponseEntity.ok(appointments);
    }

我得到了返回响应，

{"timestamp":"2019-02-10T07:58:22.151+0000","status":400,"error":"Bad Request","message":"Required Date parameter 'end' is not present","path":"/api/v1/appointments/findWithRange"}

如何正确编写调用？似乎我无法调试，因为断点没有捕获。

Answer 1

你的问题很简单——在你的电话中

$ curl -X GET http://localhost:8080/api/v1/appointments/findWithRange?start=2018-10-01&end=2018-10-15

& 标志告诉操作系统'在后台运行curl -X GET http://localhost:8080/api/v1/appointments/findWithRange?start=2018-10-01'。这就是 end 日期未定义的原因。

只需用双引号将您的网址括起来：

$ curl -X GET "http://localhost:8080/api/v1/appointments/findWithRange?start=2018-10-01&end=2018-10-15"

Answer 2

您应该指定@DateTimeFormat

Here你可以找到更多详情

Answer 3

如果你想接收参数作为日期，那么需要定义模式。 试试这个：

@GetMapping("/findWithRange")
    public ResponseEntity<List<Appointment>> findAllWithCreationRange(@RequestParam("start") @DateTimeFormat(pattern = "yyyy-MM-dd") Date start, @RequestParam("end") @DateTimeFormat(pattern = "yyyy-MM-dd") Date end) {

        List<Appointment> appointments = service.findAllWithCreationRange(start, end);

        if (Objects.isNull(appointments)) {
            ResponseEntity.badRequest().build();
        }

        return ResponseEntity.ok(appointments);
    }

如果要接收 sql.Date 则需要使用自定义反序列化器。试试这个：

@GetMapping("/findWithRange")
        public ResponseEntity<List<Appointment>> findAllWithCreationRange(@RequestParam("start") @JsonDeserialize(using = SqlDateConverter.class) Date start, @RequestParam("end") @JsonDeserialize(using = SqlDateConverter.class) Date end) {

            List<Appointment> appointments = service.findAllWithCreationRange(start, end);

            if (Objects.isNull(appointments)) {
                ResponseEntity.badRequest().build();
            }

            return ResponseEntity.ok(appointments);
        }

Sql 日期转换器：

public class SqlDateConverter extends JsonDeserializer<Date> {

    @Override
    public Date deserialize(JsonParser p, DeserializationContext ctxt) throws IOException, JsonProcessingException {
        return Date.valueOf(p.getText());
    }
}

如果您想全局反序列化 sql.Date，请尝试仅添加此 bean：

@Bean
    public Jackson2ObjectMapperBuilder configureObjectMapper() {
        Jackson2ObjectMapperBuilder builder = new Jackson2ObjectMapperBuilder();
        ObjectMapper objectMapper = new ObjectMapper();
        SimpleModule module = new SimpleModule();
        module.addDeserializer(Date.class,new SqlDateConverter());
        objectMapper.registerModule(module);
        builder.configure(objectMapper);
        return builder;
    }