java解析dbf之通过javadbf包生成和读取dbf文件

以下是简单示例

代码如下:

package com.cramc;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;

import com.linuxense.javadbf.DBFException;
import com.linuxense.javadbf.DBFField;
import com.linuxense.javadbf.DBFReader;
import com.linuxense.javadbf.DBFWriter;

public class Rwdbf {

public static void readDBF(String path)

{

InputStream fis = null;
        try
        { 
            //读取文件的输入流
            fis  = new FileInputStream(path);
            //根据输入流初始化一个DBFReader实例，用来读取DBF文件信息
            DBFReader reader = new DBFReader(fis); 
            //调用DBFReader对实例方法得到path文件中字段的个数
            int fieldsCount = reader.getFieldCount();
            System.out.println("字段数:"+fieldsCount);
            //取出字段信息  
            for( int i=0; i<fieldsCount; i++)   
            {  
              DBFField field = reader.getField(i);
              System.out.println(field.getName());
            }  
            Object[] rowValues;  
            //一条条取出path文件中记录  
            while((rowValues = reader.nextRecord()) != null)
            {  
              for( int i=0; i<rowValues.length; i++)
              {  
                System.out.println(rowValues[i]);
              }  
            }  
          }  
          catch(Exception e)   
          {  
          e.printStackTrace(); 
          } 
          finally 
          {  
          try{  
               fis.close();
          }catch(Exception e){} 
          }
    }

public static void writeDBF(String path)
 {

OutputStream fos = null;
  try 
  {  
      //定义DBF文件字段  
      DBFField[] fields = new DBFField[3];
      //分别定义各个字段信息，setFieldName和setName作用相同，
      //只是setFieldName已经不建议使用  
      fields[0] = new DBFField();  
      //fields[0].setFieldName("emp_code");
      fields[0].setName("semp_code");  
      fields[0].setDataType(DBFField.FIELD_TYPE_C);  
      fields[0].setFieldLength(10);

fields[1] = new DBFField();  
      //fields[1].setFieldName("emp_name");
      fields[1].setName("emp_name");  
      fields[1].setDataType(DBFField.FIELD_TYPE_C);  
      fields[1].setFieldLength(20);

fields[2] = new DBFField();  
      //fields[2].setFieldName("salary");
      fields[2].setName("salary"); 
      fields[2].setDataType(DBFField.FIELD_TYPE_N);  
      fields[2].setFieldLength(12);  
      fields[2].setDecimalCount(2);

//DBFWriter writer = new DBFWriter(new File(path));

//定义DBFWriter实例用来写DBF文件  
      DBFWriter writer = new DBFWriter();
      //把字段信息写入DBFWriter实例，即定义表结构 
      writer.setFields(fields);  
      //一条条的写入记录  
      Object[] rowData = new Object[3];
      rowData[0] = "1000";  
      rowData[1] = "John";  
      rowData[2] = new Double(5000.00);
      writer.addRecord(rowData);

rowData = new Object[3]; 
      rowData[0] = "1001"; 
      rowData[1] = "Lalit";
      rowData[2] = new Double(3400.00);  
      writer.addRecord(rowData);

rowData = new Object[3];
      rowData[0] = "1002";  
      rowData[1] = "Rohit"; 
      rowData[2] = new Double(7350.00); 
      writer.addRecord(rowData);

//定义输出流，并关联的一个文件  
      fos = new FileOutputStream(path);
      //写入数据  
      writer.write(fos);

//writer.write(); 
  }catch(Exception e)  
  {  
      e.printStackTrace();  
  }  
  finally 
  {  
      try{  
      fos.close();
      }catch(Exception e){}
  }
 }

public static void main(String[] args){
  String path ="E:\\tmp\\2\\xx.dbf";
  try {
   InputStream fis = new FileInputStream(path);
   DBFReader reader = new DBFReader(fis);
   int fieldsCount = reader.getFieldCount();
            System.out.println("字段数:"+fieldsCount);

DBFField[] df = new DBFField[fieldsCount+2];
            for( int i=0; i<fieldsCount; i++)   
            {  
              df[i] = reader.getField(i);
              System.out.println("field"+i+":"+df[i].getName());
            }
            df[fieldsCount] = new DBFField();
            df[fieldsCount].setName("add1");
            df[fieldsCount].setDataType(DBFField.FIELD_TYPE_C);
            df[fieldsCount].setFieldLength(10);
            df[fieldsCount+1] = new DBFField();
            df[fieldsCount+1].setName("add2");
            df[fieldsCount+1].setDataType(DBFField.FIELD_TYPE_C);
            df[fieldsCount+1].setFieldLength(10);

DBFWriter writer = new DBFWriter();
            writer.setFields(df);

Object[] rowValues;
            Object[] rowValues1 = new Object[fieldsCount+2];
            //一条条取出path文件中记录  
            while((rowValues = reader.nextRecord()) != null)
            {
              for(int i=0;i<fieldsCount;i++){
               rowValues1[i] = rowValues[i];
              }
              rowValues1[fieldsCount]="x";
              rowValues1[fieldsCount+1]="xx";
              writer.addRecord(rowValues1);
            }

path ="E:\\tmp\\2\\test2.dbf";
            OutputStream fos = new FileOutputStream(path);
          //写入数据  
          writer.write(fos);

System.out.println("OVER");

} catch (FileNotFoundException | DBFException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
 }

}