android URL中文和空格会报错解决方案

url = URLEncoder.encode(urlStr,"utf-8").replaceAll("\\+", "%20"); 

//encode会将空格替换为+号，所有要讲+号替换为空格的转义%20

url = url.replaceAll("%3A", ":").replaceAll("%2F", "/"); 

//encode会把url里的/和:这2个符号变成%2F和%3A 这里替换回来

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