今天在做一个android项目,里面需要向一个网站发送一个请求,并对该请求回来的数据进行json数据解析。当我做完了后,程序却莫名报了这个错:
Caused by: java.lang.IllegalStateException: Target host must not be null, or set in parameters.
在网上找了找,发现报错的原因是因为没有在加url中加“http://”,加上http://就是解决方案。
问题的原因在于如果不在url上加“http://”,那么整个客户端发送的请求就和我们预想的不一样。
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