...
public static void download() {
try {
URL oracle = new URL("http://api.wunderground.com/api/54f05b23fd8fd4b0/geolookup/conditions/forecast/q/US/CO/Denver.json");
BufferedReader in = new BufferedReader(new InputStreamReader(oracle.openStream()));
File file = new File("C:\Users\User\Desktop\test2.json");
if (!file.exists()) {
file.createNewFile();
}
FileWriter fw = new FileWriter(file.getAbsoluteFile());
BufferedWriter bw = new BufferedWriter(fw);
String inputLine;
while ((inputLine = in.readLine()) != null) {
bw.write(inputLine+"n");
}
fw.close();
in.close();
System.out.println("Finished...");
}
catch(MalformedURLException e){e.printStackTrace();}
catch(IOException e){e.printStackTrace();}
}
我正在制作一个网络爬虫来检索Wunderground的天气更新。我确实让它工作了,但它不会解析整个文档(最后一点的剪切)。我做错了什么?
你正在用BufferedWriter
包裹你的FileWriter
FileWriter fw = new FileWriter(file.getAbsoluteFile());
BufferedWriter bw = new BufferedWriter(fw);
但只是关闭FileWriter
fw.close();
由于FileWriter
没有访问权限,也不知道BufferedWriter
,它不会刷新任何可能的剩余缓冲区。您可以在bw
上调用flush()
,也可以关闭bw
而不是fw
。调用bw.close()
将负责关闭包装的FileWriter
。
bw.close();
in.close();