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import  java.io. * ;
import  java.util.prefs. * ;
import  java.sql. * ;
import  jxl. * ;
import  jxl.write. * ;
import  java.util. * ;
import  java.util.Properties;
import  com.lowagie.text. * ;
import  com.lowagie.text.pdf. * ;
import  java.awt.Color;

/*
 *author:kenshin
 *effect:from database reading values ,output regedit or text or xml or excel or pdf.
 *create time:2004/6/8
 *modify time:2004/6/9
 *copyright:2004
*/

public   class  PrefsDemo  {

  
static  Preferences prefsdemo;
  
static  String[] field = new   String[ 1000 ];
  
static  String [] values = new  String[ 1000 ];
  
static   int  account = 0 ,maxCount = 0 ;
  
static  String path = null ,driver = null ,user = null ,password = null ,odbcname = null ;
  
static  String txtname = null ,xmlname = null ,excelname = null ,pdfname = null ,sql = null ;
  
static  String author = null ,createtime = null ,effect = null ,version = null ;

  
public   static   void  main(String args[]) {
   String rnumber
= null ;
   
int  number = 0 ;
   BufferedReader buf;

    
// initialize config file
    Initconfig();
   
// connection database
   DBconnection();
   
// goto enterLoop
   enterLoop:
    
while (number <= 6 ) {
    
try {
     
// choice output formatting
     System.out.println( " please choice input formatting!!! " );
     System.out.print(
" 1:input regedit   2:input xml   3:input text " );
     System.out.println(
"    4:excel   5:pdf   6:all   7:exit " );
     System.out.print(
" input a number,not a character: " );
      
// keyword input
     buf = new  BufferedReader( new  InputStreamReader(System.in));
     rnumber
= buf.readLine();
     
// change "number" type
     number = Integer.parseInt(rnumber);
     
if (number > 7 ) {
      System.out.println(
" please input an number of between 1 to 7  " );
      number
= 0 ;
      
continue  enterLoop;
     }

     
switch (number) {
      
case   1 :
                      
// output regedit
                      RegeditOutput();  break ;
                
case   2 :
                      
// output xml
                      XmlOutput();      break ;
                
case   3 :
                      
// output text
                      TextOutput();     break ;
                
case   4 :
                      
// output excel
                      ExcelOutput();    break ;
                
case   5 :
                      
// output excel
                      PdfOutput();    break ;
                
case   6 :
                      
// output all
                      RegeditOutput();
                      XmlOutput();
                      TextOutput();
                      ExcelOutput();
                      PdfOutput();
                      
break ;
     }

    }

    
catch (IOException e) {System.err.println(e);}
    
catch (NumberFormatException e) {
     System.out.println(
" please input an number type! " );
     number
= 0 ;
     
continue  enterLoop;
    }

    }

  }

  
/** ***********************************************
   *effect:initialize config file
   *input value :null
   *return value:null
   *create time:2004/6/11
   *edit time:null
   ************************************************
*/

  
static   void  Initconfig() {

   Properties prop 
=   new  Properties();
   String propFileName 
=   " config.properties " ;
   FileInputStream fis;

   
try {
    fis 
=   new  FileInputStream( new  File(propFileName));
  prop.load(fis);
  
// get config file's values
     path  =  prop.getProperty( " path " );
     odbcname 
=  prop.getProperty( " odbc " );
     driver 
=  prop.getProperty( " driver " );
     user 
=  prop.getProperty( " user " );
     password 
=  prop.getProperty( " password " );

     txtname 
=  prop.getProperty( " txtname " );
     xmlname 
=  prop.getProperty( " xmlname " );
     excelname 
=  prop.getProperty( " excelname " );
     pdfname 
=  prop.getProperty( " pdfname " );

     author 
=  prop.getProperty( " author " );
     createtime 
=  prop.getProperty( " createtime " );
     effect 
=  prop.getProperty( " effect " );
     version 
=  prop.getProperty( " version " );

     sql 
=  prop.getProperty( " sql " );

     
// close inputstream
  fis.close();

    System.out.println(
" ************************* " );
    System.out.println(
" *config read successfull* " );
    System.out.println(
" ************************* " );
   }

   
catch (IOException e) {System.err.println(e);}
  }

  
/** ***********************************************
   *effect:connection database
   *input value :null
   *return value:null
   *create time:2004/6/9
   *edit time:null
   ************************************************
*/

  
static   void  DBconnection() {
   
// jdbc-odbc variable initialize
   Connection con = null ;
   Statement stm
= null ;
   ResultSet rs
= null ;

   
// jdbc-odbc bridge
    try {
    Class.forName(driver);
    con
= DriverManager.getConnection(odbcname,user,password);
    stm
= con.createStatement();
    rs
= stm.executeQuery(sql);

    
// get columncount values
        account = rs.getMetaData().getColumnCount();

    System.out.println(
" ************************* " );
    System.out.println(
" *DB connect successfull * " );
    System.out.println(
" ************************* " );
        
// get database ColumnName
         for ( int  i = 1 ;i <= account;i ++ ) {
            field[i]
= rs.getMetaData().getColumnName(i);
        }

    
while (rs.next()) {
             
for ( int  j = 1 ;j <= account;j ++ ) {
               
++ maxCount;
                 values[maxCount]
= rs.getString(field[j]);
                 System.out.println(values[maxCount]);
             }

    }

    
// close database
    rs.close();
    stm.close();
    con.close();
   }

    
catch (Exception e) {
     System.err.println(e);
    }

  }

  
/** ***********************************************
   *effect:output regedit
   *input value :null
   *return value:null
   *create time:2004/6/9
   *edit time:null
   ************************************************
*/

  
static   void  RegeditOutput() {
 prefsdemo 
=  Preferences.userRoot().node( " /com/sunway/spc " );

 
// wirte regedit
 prefsdemo.put( " author " ,author);
 prefsdemo.put(
" createtime " ,createtime);
 prefsdemo.put(
" effect " ,effect);
 prefsdemo.put(
" version " ,version);

   System.out.println(
" regedit create successfull! " );
  }

  
/** ***********************************************
   *effect:output xml
   *input value :null
   *return value:null
   *create time:2004/6/9
   *edit time:null
   ************************************************
*/

  
static   void  XmlOutput() {
    
// write xml
     try {
  File myfile 
=   new  File(path + xmlname);
  
if ( ! (myfile.exists())) {
   myfile.createNewFile();
  }

  
//  write file
     FileOutputStream fos  =   new  FileOutputStream(path + xmlname);
     prefsdemo.exportNode(fos);
    }

    
catch  (Exception e) {
       System.err.println(
" Cannot export nodes:  "   +  e);
    }

   System.out.println(
" xml create successfull  " );
  }

  
/** ***********************************************
   *effect:output text
   *input value :null
   *return value:null
   *create time:2004/6/9
   *edit time:null
   ************************************************
*/

  
static   void  TextOutput() {

 
// field length
  int  length1[] = new   int [ 1000 ];
 
// values length
  int  length2[] = new   int [ 1000 ];
 String space
= "            " ;
 String str1
= " ------------------------- " ;
 String str2[]
= new  String[ 1000 ];
 String str3[]
= new  String[ 1000 ];
 
// check "/n"
  int  q = 1 ;
  
// initialize str1[] str2[]
  for ( int  i = 1 ;i <= maxCount;i ++ ) {
  str2[i]
= "" ;
  str3[i]
= "" ;
 }


 
try {
     
// create file
  File myfile  =   new  File(path + txtname);
  
if ( ! (myfile.exists())) {
   myfile.createNewFile();
  }

  
//  write file
  FileWriter fw = new  FileWriter(path + txtname);

  
for ( int  i = 1 ;i <= maxCount;i ++ ) {
   
if (i <= account) {
    length1[i]
= 25 - field[i].length();
    
// account length2 length
     for ( int  j = 1 ;j <= length1[i];j ++ ) {
     str2[i]
= str2[i] + "   " ;
    }

   }

   length2[i]
= 25 - values[i].length();
   
// account length3 length
    for ( int  j = 1 ;j <= length2[i];j ++ ) {
    str3[i]
= str3[i] + "   " ;
   }

  }

  
// write field
   for ( int  i = 1 ;i <= account;i ++ ) {
   fw.write(field[i]);
   fw.write(str2[i]
+ space);
  }

  
// write "-"
  fw.write( " \n " );
  
for ( int  i = 1 ;i <= account;i ++ ) {
   fw.write(str1
+ space);
  }

  
// write values
  fw.write( " \n " );
  
for ( int  i = 1 ;i <= maxCount;i ++ ) {
   fw.write(values[i]
+ str3[i] + space);
   
if (i == account * q) {
    fw.write(
" \n " );
    q
*= 2 ;
   }

  }

  fw.close();
 }

 
catch (FileNotFoundException e) {System.err.println(e);}
 
catch (IOException e) {e.printStackTrace();}
   System.out.println(
" text create successfull  " );
  }

  
/** ***********************************************
   *effect:output excel
   *input value :null
   *return value:null
   *create time:2004/6/9
   *edit time:2004/6/10
   ************************************************
*/

  
static   void  ExcelOutput() {

 
// label1:field    label2:values
  Label label1 = null ,label2 = null ;
 
int  result = 0 ,rows = 0 ;
 
try {
  
// create an new file
  File myfile  =   new  File(path + excelname);
  
if ( ! (myfile.exists())) {
   myfile.createNewFile();
   System.out.println(
" an new excel create successful " );
  }

     
// create an new excel
     WritableWorkbook workbook  =  Workbook.createWorkbook(myfile);
     
// use first excel's sheet
     WritableSheet sheet  =  workbook.createSheet( " record " 0 );

     
//  add table title and values
      for ( int  i = 1 ;i <= account;i ++ ) {
         
// add table title
         label1  =   new  Label(i - 1 0 , field[i]);
         sheet.addCell(label1);
     }

     
// account rows values
     result = maxCount / account;
     
for ( int  i = 1 ;i <= result;i ++ ) {
      
for ( int  m = 1 ;m <= account;m ++ ) {
       rows
++ ;
          label2
= new  Label(m - 1 ,i,values[rows]);
          sheet.addCell(label2);
      }

     }


     workbook.write();
     workbook.close();
 }

 
catch (Exception e) {System.err.println(e);}
 System.out.println(
" excel create successfull  " );
  }

  
/** ***********************************************
   *effect:output pdf file
   *input value :null
   *return value:null
   *create time:2004/6/11
   *edit time:null
   ************************************************
*/

  
static   void  PdfOutput() {
    Document document;
    Rectangle pageRect;

   
try {
  document
= new  Document(PageSize.A4,  50 50 100 50 );
  pageRect
= document.getPageSize();
  PdfWriter.getInstance(document, 
new  FileOutputStream(path + pdfname));

  HeaderFooter header 
=   new  HeaderFooter( new  Phrase( " student information " ),  false );
  header.setBorder(
2 );
  header.setAlignment(Element.ALIGN_RIGHT);
  document.setHeader(header);

        
// add page
  HeaderFooter footer  =   new  HeaderFooter( new  Phrase( " the " ), new  Phrase( " page " ));
  footer.setAlignment(Element.ALIGN_CENTER);
  footer.setBorder(
1 );
  document.setFooter(footer);

  
// open document
  document.open();

        
// create table
  Table table  =   new  Table(account);
  table.setDefaultVerticalAlignment(Element.ALIGN_MIDDLE);
  table.setBorder(Rectangle.NO_BORDER);

  
int  hws[]  =   new   int [account];
  
for ( int  i = 1 ;i <= account;i ++ ) {
   hws[i
- 1 ] = 20 ;
  }


  table.setWidths(hws);
  table.setWidth(
100 );
  
// add field
   for ( int  i = 1 ;i <= account;i ++ ) {
   table.addCell(
new  Phrase(field[i]));
  }

  
// add values
   for ( int  i = 1 ;i <= maxCount;i ++ ) {
   table.addCell(
new  Phrase(values[i]));
  }


  
// add table to pdf file
  document.add(table);
  
// close pdf file
  document.close();
    }

   
catch (Exception e) {System.out.println(e);}
 System.out.println(
" pdf create successfull  " );
  }

}

posted on 2006-10-24 20:12 Crespo 阅读(2164) 评论(1)  编辑  收藏

评论:
# re: java读取数据库字段和值,输出到regedit,xml,text,excel,pdf的程序 2006-10-25 08:58 | illusion
利用Java 创建和读取Excel文档
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFCell;
import java.io.FileOutputStream;
public class CreateXL {
 /** Excel 文件要存放的位置,假定在D盘JTest目录下*/
 public static String outputFile="D:/JTest/ gongye.xls";
 public static void main(String argv[])
{
 try
{
  // 创建新的Excel 工作簿
  HSSFWorkbook workbook = new HSSFWorkbook();
  // 在Excel工作簿中建一工作表,其名为缺省值
  // 如要新建一名为"效益指标"的工作表,其语句为:
  // HSSFSheet sheet = workbook.createSheet("效益指标");
  HSSFSheet sheet = workbook.createSheet();
  // 在索引0的位置创建行(最顶端的行)
  HSSFRow row = sheet.createRow((short)0);
  //在索引0的位置创建单元格(左上端)
  HSSFCell cell = row.createCell((short) 0);
  // 定义单元格为字符串类型
  cell.setCellType(HSSFCell.CELL_TYPE_STRING);
  // 在单元格中输入一些内容
  cell.setCellValue("增加值");
  // 新建一输出文件流
  FileOutputStream fOut = new FileOutputStream(outputFile);
  // 把相应的Excel 工作簿存盘
  workbook.write(fOut);
  fOut.flush();
  // 操作结束,关闭文件
  fOut.close();
  System.out.println("文件生成...");



 }catch(Exception e) {
  System.out.println("已运行 xlCreate() : " + e );
 }
}
}



读取Excel文档中的数据
  示例2将演示如何读取Excel文档中的数据。假定在D盘JTest目录下有一个文件名为gongye.xls的Excel文件。
  示例2程序如下:
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFCell;
import java.io.FileInputStream;
public class ReadXL {
 /** Excel文件的存放位置。注意是正斜线*/
 public static String fileToBeRead="D:/JTest/ gongye.xls";
 public static void main(String argv[]){
 try{
  // 创建对Excel工作簿文件的引用
  HSSFWorkbook workbook = new HSSFWorkbook(new FileInputStream(fileToBeRead));
  // 创建对工作表的引用。
  // 本例是按名引用(让我们假定那张表有着缺省名"Sheet1")
  HSSFSheet sheet = workbook.getSheet("Sheet1");
  // 也可用getSheetAt(int index)按索引引用,
  // 在Excel文档中,第一张工作表的缺省索引是0,
  // 其语句为:HSSFSheet sheet = workbook.getSheetAt(0);
  // 读取左上端单元
  HSSFRow row = sheet.getRow(0);
  HSSFCell cell = row.getCell((short)0);
  // 输出单元内容,cell.getStringCellValue()就是取所在单元的值
  System.out.println("左上端单元是: " + cell.getStringCellValue());
 }catch(Exception e) {
  System.out.println("已运行xlRead() : " + e );
 }
}
}




  设置单元格格式
  在这里,我们将只介绍一些和格式设置有关的语句,我们假定workbook就是对一个工作簿的引用。在Java



中,第一步要做的就是创建和设置字体和单元格的格式,然后再应用这些格式:



  1、创建字体,设置其为红色、粗体:
HSSFFont font = workbook.createFont();
font.setColor(HSSFFont.COLOR_RED);
font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
  2、创建格式
HSSFCellStyle cellStyle= workbook.createCellStyle();
cellStyle.setFont(font);
  3、应用格式
HSSFCell cell = row.createCell((short) 0);
cell.setCellStyle(cellStyle);
cell.setCellType(HSSFCell.CELL_TYPE_STRING);
cell.setCellValue("标题 ");

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