log4j.properties文件配置
log4j.rootLogger = DEBUG,stdout,F log4j.appender.stdout = org.apache.log4j.ConsoleAppender log4j.appender.stdout.Target = System.out log4j.appender.stdout.layout = org.apache.log4j.PatternLayout log4j.appender.stdout.layout.ConversionPattern = %d{ABSOLUTE} %5p %c{1}:%L - %m%n log4j.appender.F = org.apache.log4j.DailyRollingFileAppender log4j.appender.F.File = logs/debug.log log4j.appender.F.Append = true log4j.appender.F.Threshold = DEBUG log4j.appender.F.layout = org.apache.log4j.PatternLayout log4j.appender.F.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss} [ %t:%r ] - [ %p ] %m%n #log4j.appender.D = org.apache.log4j.DailyRollingFileAppender #log4j.appender.D.File = logs/error.log #log4j.appender.D.Append = true #log4j.appender.D.Threshold = ERROR #log4j.appender.D.layout = org.apache.log4j.PatternLayout #log4j.appender.D.layout.ConversionPattern =%-d{yyyy-MM-dd HH\:mm\:ss} [ %t\:%r ] - [ %p ] %m%n
获取异常信息内容工具类
import java.io.PrintWriter; import java.io.StringWriter; public class ExceptionMessage { public static String getTrace(Throwable t) { StringWriter stringWriter= new StringWriter(); PrintWriter writer= new PrintWriter(stringWriter); t.printStackTrace(writer); StringBuffer buffer= stringWriter.getBuffer(); return buffer.toString(); } }
读取EXCEL文件
package com.mazhan3.fileReader; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.IOException; import org.apache.log4j.Logger; import org.apache.poi.hssf.usermodel.HSSFWorkbook; import org.apache.poi.ss.usermodel.Cell; import org.apache.poi.ss.usermodel.Row; import org.apache.poi.ss.usermodel.Sheet; import org.apache.poi.ss.usermodel.Workbook; import org.apache.poi.xssf.usermodel.XSSFWorkbook; import com.mazhan3.utils.ExceptionMessage; public class ExcelReader { //标记两种excel文档的后缀名 private static final String EXTENSION_XLS = "xls"; private static final String EXTENSION_XLSX = "xlsx"; Logger log = Logger.getLogger(ExcelReader.class); private Workbook wb = null; /** * 构造时加载excel文件 * @param filePath */ public ExcelReader(String filePath){ File file = new File(filePath); String absolutePath = file.getAbsolutePath(); FileInputStream in = null; try { in = new FileInputStream(file); } catch (FileNotFoundException e) { e.printStackTrace(); log.info(ExceptionMessage.getTrace(e)); log.error("文件没有发现"); } getWorkBook(absolutePath, in); } /** * * @param absolutePath * @param in */ private void getWorkBook(String absolutePath, FileInputStream in) { if(absolutePath.endsWith(EXTENSION_XLS)){ try { wb = new HSSFWorkbook(in); } catch (IOException e) { log.info(ExceptionMessage.getTrace(e)); } }else if(absolutePath.endsWith(EXTENSION_XLSX)){ try { wb = new XSSFWorkbook(in); } catch (IOException e) { log.info(ExceptionMessage.getTrace(e)); } }else{ log.error("EXCEL文件格式错误"); } } /** * 默认读取sheet0页 * 传入的行号与列号直接传入excel表格中的即可,更符合使用习惯,方法中已进行了处理 * 即如果想要获取A1的值,那么行号传1,列号传1即可。 * @param rowNum * @param cellNum * @return String类型的excel表格中存储的值 */ public String getValue(int rowNum,int cellNum){ String value = getValue(rowNum,cellNum,0); return value; } /** * 传入的行号与列号直接传入excel表格中的即可,更符合使用习惯,方法中已进行了处理 * 即如果想要获取A1的值,那么行号传1,列号传1即可。 * @param rowNum * @param cellNum * @param sheetNum * @return String类型的excel表格中存储的值 */ public String getValue(int rowNum,int cellNum,int sheetNum){ rowNum--; cellNum--; Row row = getRow(rowNum, sheetNum); Cell cell = getCell(cellNum, row); //return cell.getStringCellValue(); //如果选择了上面一行的方法,当输出一个数字时则 //会抛出java.lang.IllegalStateException: Cannot get a text value from a numeric cell return cell.toString(); } /** * 拿到sheet页中的行 * @param rowNum * @param sheetNum * @return Row */ private Row getRow(int rowNum, int sheetNum) { Sheet sheet = wb.getSheetAt(sheetNum); //注意这里的行号,如果你有1,2,3,4四行,那么第一行的行号为0,最后一行的行号为3 int firstRowNum = sheet.getFirstRowNum(); int lastRowNum = sheet.getLastRowNum(); Row row = null; if(rowNum >= firstRowNum && rowNum <= lastRowNum){ row = sheet.getRow(rowNum); }else{ log.error("行号输入错误,在excel文件sheet页内容的范围之外"); throw new RuntimeException("行号错误"); } return row; } /** * 拿到行中的列 * @param cellNum * @param row * @return Cell */ private Cell getCell(int cellNum, Row row) { Cell cell = null; //注意列号,如果你的excel文件中有A,B,C三列,那么第一列号为0,最后一列的列号为3 int firstCellNum = row.getFirstCellNum(); int lastCellNum = row.getLastCellNum(); if(cellNum >= firstCellNum && cellNum < lastCellNum ){ cell = row.getCell(cellNum); }else{ log.error("列号错误,,在excel文件sheet页内容的范围之外"); throw new RuntimeException("列号错误"); } return cell; } }
时间: 2024-11-07 06:33:55