bigintegerconverter.java

来自「办公自动化项目」· Java 代码 · 共 50 行

package hong.javanet.util;

import org.apache.commons.beanutils.*;
import java.math.BigInteger;

/**
 * <p>Title: </p>
 * <p>Description: hong.javanet框架</p>
 * <p>Copyright: Copyright (c) 2005</p>
 * <p>Company: 洪桃李</p>
 * @author 洪桃李
 * @version 2.0
 */

public class BigIntegerConverter
    implements Converter {

  public Object convert(Class class0, Object object) {
    if(object==null) {
     return null;
   }
   if (object instanceof BigInteger) {
     return object;
   }
   String str = "";
   if(!(object instanceof String)) {
     str = object.toString();
   }
   if(object instanceof String) {
     str = ( (String) object).trim();
     if ("".equals(str)) {
       return null;
     }
     try {
       return new java.math.BigInteger(str);
     }
     catch (Exception ex) {
      // throw new ConversionException(str + " 不是有效的整数！");
      //  throw new RuntimeException(str + " 不是有效的小数！");
      return null;
     }
   }
   else {
     //throw new ConversionException(object + " 不是一个字符串！");
     return null;
   }

  }
}