将文件整个保存到DB2数据库BLOB字段

import java.io.File;import java.io.FileInputStream;import java.io.InputStream;import java.sql.Connection;import java.sql.DriverManager;import java.sql.PreparedStatement;public class ExcelImportServiceImpl implements ExcelImportService {public void excelImport(String filePath) {Connection conn = null;PreparedStatement  ps = null;try{Class.forName("com.ibm.db2.jcc.DB2Driver");conn = DriverManager.getConnection("jdbc:db2://localhost:50000/xxx","username","password");ps = conn.prepareStatement("insert into aa.user(detail) values (?)");File file = new File(filePath);InputStream is = new FileInputStream(file);ps.setBinaryStream(1, is, (int)file.length());ps.executeUpdate();}catch(Exception e){e.printStackTrace();}finally{if(ps!=null){try{ps.close();}catch(Exception e){e.printStackTrace();}}if(conn!=null){try{conn.close();}catch(Exception e){e.printStackTrace();}}}}}

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如出现以下错误：

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com.ibm.db2.jcc.am.co: DB2 SQL Error: SQLCODE=-302, SQLSTATE=22001, SQLERRMC=null, DRIVER=3.57.82

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原因是：上传文件所需内存大于数据库字段的最大内存限制

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