大数据导出Excel JVM参数 -Xmx500m -Xms500m -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=./excelexportdemo.hprof -Xloggc:./gc-%t.log -XX:+PrintGCDetails -XX:+PrintGCDateStamps -XX:+PrintGCTimeStamps -XX:+HeapDumpAfterFullGC -XX:+HeapDumpBeforeFullGC Apache POI SXSSFWorkbook Apache POI XSSF工作簿