[英]How to pass Pageable to Feign Client in POST Request with additional @RequestBody
我试图在 Spring 中为我的 REST 服务 controller 创建一个 feign 客户端。
@PostMapping("/search")
public Page<MeasureDto> searchMeasures(@RequestBody MeasureDto example, Pageable pageable) {
...
}
客户端看起来像这样:
@PostMapping("/search")
public Page<MeasureDto> searchMeasures(@RequestHeader("apiKey") String apiKey, @RequestBody MeasureDto example, Pageable pageable);
运行测试时抛出以下异常:
Caused by: java.lang.IllegalStateException: Method has too many Body parameters: public abstract org.springframework.data.domain.Page com.foo.bar.jobservice.client.MeasureServiceClient.searchMeasures(java.lang.String,com.example .foo.jobservice.client.dto.MeasureDto,org.springframework.data.domain.Pageable)
我已经知道/尝试过的:
github 上有一个已关闭的问题:https://github.com/spring-cloud/spring-cloud-netflix/issues/556
应该解决问题的提交的问题:
https://github.com/spring-cloud/spring-cloud-openfeign/issues/26
提交:
我配置了什么:
import feign.codec.Encoder;
import org.springframework.beans.factory.ObjectFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.http.HttpMessageConverters;
import org.springframework.cloud.openfeign.EnableFeignClients;
import org.springframework.cloud.openfeign.support.PageJacksonModule;
import org.springframework.cloud.openfeign.support.PageableSpringEncoder;
import org.springframework.cloud.openfeign.support.SpringEncoder;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
@EnableFeignClients
@Configuration
public class FeignConfig {
@Bean
public PageJacksonModule pageJacksonModule() {
return new PageJacksonModule();
}
@Autowired
private ObjectFactory<HttpMessageConverters> messageConverters;
@Bean
public Encoder feignEncoder() {
return new PageableSpringEncoder(new SpringEncoder(messageConverters));
}
}
还是行不通。
我正在使用什么:
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.3.1.RELEASE</version>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-openfeign</artifactId>
<version>2.2.3.RELEASE</version>
我究竟做错了什么?
更新:
我创建了一个可重现的示例:
https://github.com/manuelwaltschek/mre.git
启动客户端服务或调用 spring/spring-cloud-openfeign/375-pageable-not-working/parent/client/src/test/java/com/example/client/HelloServiceClientTest.java
github 上的未解决问题: https://github.com/spring-cloud/spring-cloud-openfeign/issues/375 Z5E056C500A1C4B6A7110B50D807BADE-cloud-://github.com/
编辑:基本上我想知道如何将 pageable 传递给 feign 客户端。 也许在 url 参数中对其进行编码?
我现在发送查询 url 参数中的可分页,并在客户端界面中的可分页参数上使用 org.springframework.cloud.openfeign.SpringQueryMap 注释
@PostMapping("/search")
public Page<HelloDto> searchHellos(@RequestHeader("apiKey") String apiKey, @RequestBody HelloDto example, @SpringQueryMap Pageable pageable);
异常与“太多的 Body 参数”有关,这意味着您只需在 RequestBody 中发送一个 object,在这种特殊情况下,我相信它是 MeasureDto“示例”。 您必须以不同的方式传递的页面,通常我在 class 中有一个“页面”integer 属性(在您的情况下为 MeasureDTO),或者我将页码作为@RequestParam 发送,如下所示:
@PostMapping("/search")
public Page<MeasureDto> searchMeasures(@RequestBody MeasureDto example, @RequestParam(required = true) Integer page) {
// PageRequest.Of(numberPage, quantityRegisters) will send a Pageable, in this case bellow, number of page + number of records
measureService.getMeasurePageable(example, PageRequest.of(page, 10));
}
尽管如此,如果您正在搜索而不是保存它,请考虑将 GetMapping 与 queryParams 一起使用。
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