POI-JAVA读取excel生成word表格文档

平时，使用POI操作Excel，但是很少操作WORD。今天碰到操作WORD的需求，借鉴网上的文章，讲的非常透彻。

其中表格宽度设置，不起效果，代码以注释。通过每个单元格的宽度设置，间接放大宽度。

我的代码如下：

 

package sym_cpts.poi.docx;

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.math.BigInteger;
import java.util.ArrayList;
import java.util.List;

import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.poifs.filesystem.POIFSFileSystem;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.CellType;
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 org.apache.poi.xwpf.usermodel.XWPFDocument;
import org.apache.poi.xwpf.usermodel.XWPFParagraph;
import org.apache.poi.xwpf.usermodel.XWPFRun;
import org.apache.poi.xwpf.usermodel.XWPFTable;
import org.apache.poi.xwpf.usermodel.XWPFTableCell;
import org.apache.poi.xwpf.usermodel.XWPFTableRow;
import org.junit.Test;
import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTTcPr;

public class DocTest {
	
  /** 
    * 通过XWPFDocument对内容进行访问。对于XWPF文档而言，用这种方式进行读操作更佳。 
    * @throws Exception 
    */  
	 @Test  
	 public void testReadByDoc() throws Exception {  
		 InputStream is = new FileInputStream("D:\\table.docx");  
	     XWPFDocument doc = new XWPFDocument(is);  
	     List<XWPFParagraph> paras = doc.getParagraphs();  
	 }
	 private static POIFSFileSystem fs;
	 private static Workbook wb;
	 private static Sheet sheet;
	 private static Row row;

	 public List<Row> readExcelToEntity(InputStream is,String ext) throws IllegalArgumentException, IllegalAccessException, NoSuchFieldException, SecurityException {
	    	List<Row> list = new ArrayList<Row>();
	        try {
	        	if(ext.equals("xls")){
	        		//fs = new POIFSFileSystem(is);
	  	            wb = new HSSFWorkbook(is);
	        	}else{
	        		//fs = new POIFSFileSystem(is);
	  	            wb = new XSSFWorkbook(is);
	        	}
	          
	        } catch (IOException e) {
	            e.printStackTrace();
	        }
	        sheet = wb.getSheetAt(0);
	        // 得到总行数
	        int rowNum = sheet.getLastRowNum();
	        row = sheet.getRow(0);
	        // 正文内容应该从第二行开始,第一行为表头的标题
	        for (int i = 1; i <= rowNum; i++) {
	            row = sheet.getRow(i);
	            list.add(row);
	        }
	        return list;
	    }
	 /**
	     * 获取单元格数据内容为字符串类型的数据
	     * 
	     * @param cell Excel单元格
	     * @return String 单元格数据内容
	     */
	    private static String getStringCellValue(Cell cell) {
	    	if(cell == null) return "";
	        String strCell = "";
	        cell.setCellType(CellType.STRING);
	        switch (cell.getCellTypeEnum()) {
	        case STRING:
	            strCell = cell.getStringCellValue();
	            break;
	        case NUMERIC:
	            strCell = String.valueOf(cell.getNumericCellValue());
	            break;
	        case BOOLEAN:
	            strCell = String.valueOf(cell.getBooleanCellValue());
	            break;
	        case BLANK:
	            strCell = "";
	            break;
	        default:
	            strCell = "";
	            break;
	        }
	        if (strCell.equals("") || strCell == null || cell == null) {
	            return "";
	        }
	        return strCell;
	    }
	    
	//生成word表格，并插入表格
	public XWPFTable createData(XWPFDocument doc,String tableName,List<Row> subList){
		//创建一个段落  
	    XWPFParagraph para = doc.createParagraph();  
		//添加表名
		XWPFRun run = para.createRun();  
	    run.setBold(true); //加粗  
	    run.setText(tableName);  
	      
		XWPFTable table = null; 
		if(table == null){
			table = doc.createTable(1, 5);
			List<XWPFTableRow> rows = table.getRows();
			XWPFTableRow firstRow = rows.get(0);
			List<XWPFTableCell> firstRowCells = firstRow.getTableCells();
			
			//单元格属性  
            CTTcPr cellPr0 = firstRowCells.get(0).getCTTc().addNewTcPr();  
            cellPr0.addNewTcW().setW(BigInteger.valueOf(1500));
            CTTcPr cellPr1 = firstRowCells.get(1).getCTTc().addNewTcPr();  
            cellPr1.addNewTcW().setW(BigInteger.valueOf(1500));
            CTTcPr cellPr2 = firstRowCells.get(2).getCTTc().addNewTcPr();  
            cellPr2.addNewTcW().setW(BigInteger.valueOf(1500));
            CTTcPr cellPr3 = firstRowCells.get(3).getCTTc().addNewTcPr();  
            cellPr3.addNewTcW().setW(BigInteger.valueOf(1500));
            CTTcPr cellPr4 = firstRowCells.get(4).getCTTc().addNewTcPr();  
            cellPr4.addNewTcW().setW(BigInteger.valueOf(1500));
            //cellPr.addNewVAlign().setVal(STVerticalJc.CENTER);  
                  
			firstRowCells.get(0).setText("字段编码");
			firstRowCells.get(1).setText("字段类型");
			firstRowCells.get(2).setText("是否为空");
			firstRowCells.get(3).setText("默认值");
			firstRowCells.get(4).setText("字段描述");
			
			//设置表格属性
		   // CTTblPr tablePr = table.getCTTbl().addNewTblPr();  
		   // int width2 = table.getWidth();
		    //System.out.println(width2);
		   // table.setWidth(60000);
		    //System.out.println(table.getWidth());
		    //table.setWidth(width);
		    //表格宽度  
		    //CTTblWidth width = tablePr.addNewTblW();  
		   // width.setW(BigInteger.valueOf(60000)); //BigInteger.valueOf("14.69")
		}
		for(int i=0;i<subList.size();i++){
			XWPFTableRow newRow = table.createRow();
			Row row = subList.get(i);
			String bianma = getStringCellValue(row.getCell(2));
			String leixing = getStringCellValue(row.getCell(3));
			String kong = getStringCellValue(row.getCell(4));
			String moren = getStringCellValue(row.getCell(5));
			String miaoshu = getStringCellValue(row.getCell(6));
			
			List<XWPFTableCell> firstRowCells = newRow.getTableCells();
			
			CTTcPr cellPr0 = firstRowCells.get(0).getCTTc().addNewTcPr();  
            cellPr0.addNewTcW().setW(BigInteger.valueOf(1500));
            CTTcPr cellPr1 = firstRowCells.get(1).getCTTc().addNewTcPr();  
            cellPr1.addNewTcW().setW(BigInteger.valueOf(1500));
            CTTcPr cellPr2 = firstRowCells.get(2).getCTTc().addNewTcPr();  
            cellPr2.addNewTcW().setW(BigInteger.valueOf(1500));
            CTTcPr cellPr3 = firstRowCells.get(3).getCTTc().addNewTcPr();  
            cellPr3.addNewTcW().setW(BigInteger.valueOf(1500));
            CTTcPr cellPr4 = firstRowCells.get(4).getCTTc().addNewTcPr();  
            cellPr4.addNewTcW().setW(BigInteger.valueOf(1500));
	            
			firstRowCells.get(0).setText(bianma);
			firstRowCells.get(1).setText(leixing);
			firstRowCells.get(2).setText(kong);
			firstRowCells.get(3).setText(moren);
			firstRowCells.get(4).setText(miaoshu);
		}
		
		return table;
	}
	 
   /*** 
    * 写一个表格 
    * @throws Exception 
    */  
   @Test  
   public void testWriteTable() throws Exception {  
	  XWPFDocument doc = new XWPFDocument();  
	  List<Row> rowList = readExcelToEntity(new FileInputStream("C:\\Users\\Administrator\\Desktop\\cod-columns.xlsx"),"xlsx");
	  boolean flag = false;
	  List<Row> subList = null;
	  String tableName = null;
	  for(int i=0;i<rowList.size();i++){
		 Row row = rowList.get(i);
		 String cellTableName = getStringCellValue(row.getCell(1));
		 if(tableName == null || "".equals(tableName.trim())){
			 tableName = cellTableName;
			 subList = new ArrayList<Row>();
		 }
		 if(tableName.equals(cellTableName)){
			 subList.add(row);
		 }else{
			 //对前面的subList进行word表格
			 createData(doc,tableName,subList);
			 tableName = cellTableName;
			 subList = new ArrayList<Row>();
			 //对
		 }
		   
	  }
	  
	  //文件不存在时会自动创建  
      OutputStream os = new FileOutputStream("C:\\Users\\Administrator\\Desktop\\table.docx");  
      //写入文件  
      doc.write(os);  
      this.close(os);  
   }  
    
   /** 
    * 关闭输出流 
    * @param os 
    */  
   private void close(OutputStream os) {  
      if (os != null) {  
         try {  
            os.close();  
         } catch (IOException e) {  
            e.printStackTrace();  
         }  
      }  
   }  

}

 辅助SQL

SELECT  table_schema,table_name,column_name,column_type,IS_NULLABLE,COLUMN_DEFAULT,column_comment FROM `information_schema`.`COLUMNS` WHERE  table_schema LIKE 'pr_cod_%' ORDER BY table_schema ASC,table_name ASC,ORDINAL_POSITION ASC
LIMIT 20000;