2
025
-03
-09T
19:46
:32.3
00+
08
:00 ERROR 4464 — [ CrawlerTask
-1] c.x.backend.service.PriceCrawlerService
: [source1] 网络请求异常
: HTTP error fetching URL. Status=4
04, URL=[https
://example.com/price?id=P1
23]package com.xymzsfxy.backend.service;
import com.xymzsfxy.backend.entity.PriceHistory;
import com.xymzsfxy.backend.entity.Product;
import com.xymzsfxy.backend.repository.PriceHistoryRepository;
import com.xymzsfxy.backend.repository.ProductRepository;
import org.jsoup.Jsoup;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.boot.test.context.TestConfiguration;
import org.springframework.boot.test.mock.mockito.MockBean;
import org.springframework.boot.test.mock.mockito.SpyBean;
import org.springframework.context.annotation.Bean;
import org.springframework.scheduling.annotation.EnableAsync;
import org.springframework.test.context.TestPropertySource;
import java.math.
BigDecimal;
import java.util.Optional;
import java.util.concurrent.TimeUnit;
import java.io.IOException;
import org.jsoup.nodes.Document;
import static org.awaitility.Awaitility.await;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.Mockito.*;
// 测试类注解
@SpringBootTest
@EnableAsync
@TestPropertySource
(properties = {
“crawler.sources.source1=https
://example.com/price?id=%s”,
“crawler.selectors.source1=div.price”
}
)
class PriceCrawlerServiceTest {
@Autowired
private PriceCrawlerService priceCrawlerService;
@MockBean
private ProductRepository productRepository;
@MockBean
private PriceHistoryRepository priceHistoryRepository;
@SpyBean
private PriceCrawlerService spyPriceCrawlerService;
@TestConfiguration
static class TestConfig {
@Bean
public JsoupWrapper jsoupWrapper
() {
return new JsoupWrapper
();
}
}
@Test
void shouldSavePriceWhenCrawlSuccess
() throws Exception {
// 模拟测试数据
Product mockProduct = new Product
();
mockProduct.setId
(1L
);
mockProduct.setExternalId
("P1
23"
);
// 配置Mock行为
when
(productRepository.findById
(1L
)).thenReturn
(Optional.of
(mockProduct
));
doReturn
(new
BigDecimal("299.
00"
)).when
(spyPriceCrawlerService
).extractPrice
(any
(), any
String());
// 执行测试方法
priceCrawlerService.crawlPrices
(1L
);
// 验证异步执行结果
await
().atMost
(5, TimeUnit.SECONDS
).untilAsserted
(() -> {
verify
(priceHistoryRepository, times
(1
)).save
(any
(PriceHistory.class
));
verify
(productRepository, times
(1
)).save
(argThat
(p
->
p.getLatestPrice
().equals
(new
BigDecimal("299.
00"
))
));
}
);
}
@Test
void shouldHandleMissingProduct
() {
when
(productRepository.findById
(999L
)).thenReturn
(Optional.empty
());
// 直接调用方法，若抛出异常测试会自动失败
priceCrawlerService.crawlPrices
(999L
);
verify
(priceHistoryRepository, never
()).save
(any
());
}
}
// 辅助类用于模拟网页请求
class JsoupWrapper {
Document fetchDocument
(String url
) throws IOException {
// 模拟返回包含价格的HTML文档
String html = “<html><div class=‘price’>¥299.
00</div></html>”;
return Jsoup.parse
(html
);
}
}如何用正确的网址验证
本文介绍了如何将BigDecimal类型转换为String类型，并通过实例演示了转换过程。同时，文章还强调了BigDecimal中0、0.0与0.00的区别。
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