Java BufferedReader异常
我使用了:Java BufferedReader异常,java,Java,我使用了: try { URL _url = new URL(url); HttpURLConnection conn = (HttpURLConnection) _url.openConnection(); BufferedReader rd = new BufferedReader(new InputStreamReader(conn.getInputStream(), "UTF-8")); String line;
try {
URL _url = new URL(url);
HttpURLConnection conn = (HttpURLConnection) _url.openConnection();
BufferedReader rd = new BufferedReader(new InputStreamReader(conn.getInputStream(), "UTF-8"));
String line;
while ((line = rd.readLine()) != null) {
teste = teste + line;
}
rd.close();
} catch (Exception e) {
System.out.println("Exception===" + e);
return null;
}
return teste;
我得到以下异常:
Exception StackTrace:
java.net.UnknownHostException: api
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:225)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:377)
at java.net.Socket.connect(Socket.java:539)
at java.net.Socket.connect(Socket.java:488)
at sun.net.NetworkClient.doConnect(NetworkClient.java:175)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:424)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:538)
at sun.net.www.http.HttpClient.<init>(HttpClient.java:221)
at sun.net.www.http.HttpClient.New(HttpClient.java:304)
at sun.net.www.http.HttpClient.New(HttpClient.java:323)
at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:999)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:935)
at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:853)
at sun.net.www.protocol.http.HttpURLConnection.followRedirect(HttpURLConnection.java:2168)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1402)
异常堆栈跟踪:
java.net.UnknownHostException:api
在java.net.PlainSocketImpl.connect(PlainSocketImpl.java:225)
位于java.net.socksocketimpl.connect(socksocketimpl.java:377)
位于java.net.Socket.connect(Socket.java:539)
位于java.net.Socket.connect(Socket.java:488)
位于sun.net.NetworkClient.doConnect(NetworkClient.java:175)
位于sun.net.www.http.HttpClient.openServer(HttpClient.java:424)
位于sun.net.www.http.HttpClient.openServer(HttpClient.java:538)
http.HttpClient.(HttpClient.java:221)
http.HttpClient.New(HttpClient.java:304)
http.HttpClient.New(HttpClient.java:323)
位于sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:999)
位于sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:935)
位于sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:853)
http.HttpURLConnection.followRedirect(HttpURLConnection.java:2168)
位于sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1402)
问题是您无法连接到URL。未知后异常
表明您尝试连接的地址不存在。请删除此图像并发布您的真实代码。顺便说一句,错误消息非常明确。你至少读过了吗?