與org.json.JSONException相關的錯誤：輸入的第0個字符

Question

運行我的android應用程序時出現錯誤。 有時它可以平穩運行，但有時會顯示如下錯誤：

java.net.SocketException: Connection timed out
at org.apache.harmony.luni.platform.OSNetworkSystem.read(Native Method)
at dalvik.system.BlockGuard$WrappedNetworkSystem.read(BlockGuard.java:273)
at org.apache.harmony.luni.net.PlainSocketImpl.read(PlainSocketImpl.java:458)
at org.apache.harmony.luni.net.SocketInputStream.read(SocketInputStream.java:85)
at org.apache.http.impl.io.AbstractSessionInputBuffer.fillBuffer(AbstractSessionInputBuffer.java:103)
at org.apache.http.impl.io.AbstractSessionInputBuffer.readLine(AbstractSessionInputBuffer.java:191)
at org.apache.http.impl.conn.DefaultResponseParser.parseHead(DefaultResponseParser.java:82)
at org.apache.http.impl.io.AbstractMessageParser.parse(AbstractMessageParser.java:174)
at org.apache.http.impl.AbstractHttpClientConnection.receiveResponseHeader(AbstractHttpClientConnection.java:179)
at org.apache.http.impl.conn.DefaultClientConnection.receiveResponseHeader(DefaultClientConnection.java:235)
at org.apache.http.impl.conn.AbstractClientConnAdapter.receiveResponseHeader(AbstractClientConnAdapter.java:259)
at org.apache.http.protocol.HttpRequestExecutor.doReceiveResponse(HttpRequestExecutor.java:279)
at org.apache.http.protocol.HttpRequestExecutor.execute(HttpRequestExecutor.java:121)
at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:421)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:555)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:465)

轉換結果java.lang.NullPointerException時發生錯誤分析數據org.json.JSONException時發生錯誤：字符0的輸入結束

有人可以告訴我這個問題的主要原因是什么？ 謝謝。

Answer 1

您試圖解析一個為空的對象。

因此，如果要消除此錯誤，應檢查以確保要序列化的對象有效。