org.apache.http.ProtocolException: Target host is not specified_接口测试target host is not specified-优快云博客

本文链接：https://blog.youkuaiyun.com/qq3434569/article/details/114032241

报错信息显示在尝试访问www.ip138.com时遇到了ClientProtocolException，原因是目标主机未指定。解决方案是确保URL以'http://'开头。修复此问题后，可以正常执行HTTP请求。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

报错信息：

21-02-24 17:55:26,617 WARN  us.codecraft.webmagic.downloader.HttpClientDownloader(HttpClientDownloader.java:89) ## download page www.ip138.com/10/ error
org.apache.http.client.ClientProtocolException
	at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:187)
	at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:83)
	at us.codecraft.webmagic.downloader.HttpClientDownloader.download(HttpClientDownloader.java:83)
	at us.codecraft.webmagic.Spider.processRequest(Spider.java:408)
	at us.codecraft.webmagic.Spider.access$000(Spider.java:61)
	at us.codecraft.webmagic.Spider$1.run(Spider.java:320)
	at us.codecraft.webmagic.thread.CountableThreadPool$1.run(CountableThreadPool.java:74)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)
Caused by: org.apache.http.ProtocolException: Target host is not specified
	at org.apache.http.impl.conn.DefaultRoutePlanner.determineRoute(DefaultRoutePlanner.java:71)
	at org.apache.http.impl.client.InternalHttpClient.determineRoute(InternalHttpClient.java:125)
	at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:184)
	... 9 more

Process finished with exit code 130

解决方案：

对于URL必须使用 http://开始，将url加上http://即可