【Caused by: java.net.SocketTimeoutException】

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起因:java.net 。导致socket time out异常的原因:java.net 。SocketTimeoutException介绍:服务器端处理时间长，客户端有SocketTimeoutException解决方案:可以手动设置超时 。lt/brgt；将连接超时设置为20000，将套接字读取超时设置为20000，或者不设置

• Caused by: java.net.SocketException: Software caused connection abort: socket write error
• Caused by: com.alibaba.druid.sql.parser.SQLParseException: syntax error, expect RPAREN, actual IDENTIFIER separator
• Caused by: java.lang.ClassNotFoundException: org.apache.log4j.NDC
• Caused by: java.lang.OutOfMemoryError: bitmap size exceeds VM budget 急急