异常 : Read timed out

Caused by: org.postgresql.util.PSQLException: An I/O error occurred while sending to the backend. at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:335) at org.postgresql.jdbc.PgStatement.executeInternal(PgStatement.java:441) at org.postgresql.jdbc.PgStatement.execute(PgStatement.java:365) at org.postgresql.jdbc.PgPreparedStatement.executeWithFlags(PgPreparedStatement.java:143) at org.postgresql.jdbc.PgPreparedStatement.executeUpdate(PgPreparedStatement.java:120) at com.alibaba.druid.filter.FilterChainImpl.preparedStatement_executeUpdate(FilterChainImpl.java:3201) at com.alibaba.druid.filter.FilterAdapter.preparedStatement_executeUpdate(FilterAdapter.java:1092) at com.alibaba.druid.filter.FilterEventAdapter.preparedStatement_executeUpdate(FilterEventAdapter.java:491) at com.alibaba.druid.filter.FilterChainImpl.preparedStatement_executeUpdate(FilterChainImpl.java:3199) at com.alibaba.druid.wall.WallFilter.preparedStatement_executeUpdate(WallFilter.java:662) at com.alibaba.druid.filter.FilterChainImpl.preparedStatement_executeUpdate(FilterChainImpl.java:3199) at com.alibaba.druid.proxy.jdbc.PreparedStatementProxyImpl.executeUpdate(PreparedStatementProxyImpl.java:194) at com.alibaba.druid.pool.DruidPooledPreparedStatement.executeUpdate(DruidPooledPreparedStatement.java:255) at com.jfinal.plugin.activerecord.DbPro.update(DbPro.java:278) at com.jfinal.plugin.activerecord.DbPro.update(DbPro.java:678) at com.jfinal.plugin.activerecord.DbPro.update(DbPro.java:696) ... 74 more Caused by: java.net.SocketTimeoutException: Read timed out at java.net.SocketInputStream.socketRead0(Native Method) at java.net.SocketInputStream.socketRead(SocketInputStream.java:116) at java.net.SocketInputStream.read(SocketInputStream.java:170) at java.net.SocketInputStream.read(SocketInputStream.java:141) at org.postgresql.core.VisibleBufferedInputStream.readMore(VisibleBufferedInputStream.java:140) at org.postgresql.core.VisibleBufferedInputStream.ensureBytes(VisibleBufferedInputStream.java:109) at org.postgresql.core.VisibleBufferedInputStream.read(VisibleBufferedInputStream.java:67) at org.postgresql.core.PGStream.receiveChar(PGStream.java:306) at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:1952) at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:308) ... 89 more