Java ConvertUtils.lookup方法代碼示例

import org.apache.commons.beanutils.ConvertUtils; //導入方法依賴的package包/類
public String[] convertToString(Object[] objects) {
    String[] strings = new String[objects.length];

    int i = 0;
    for (Object object : objects) {
        if (object != null) {
            Converter converter = ConvertUtils.lookup(object.getClass());
            if (converter != null) {
                strings[i++] = converter.convert(object.getClass(), object).toString();
            } else {
                strings[i++] = object.toString();
            }
        } else {
            strings[i++] = "";
        }
    }

    return strings;
}
 

import org.apache.commons.beanutils.ConvertUtils; //導入方法依賴的package包/類
/**
 * Convert the given object to be castable to the given <code>goal</code> type.
 * 
 * @param obj
 *            the object to convert
 * @param goal
 *            the goal type
 * 
 * @return the converted object
 */
public static Object convert(Object obj, Class<?> goal) {
    if (null == obj) {
        return obj;
    } else {
        if (goal.isInstance(obj)) {
            return obj;
        } else if (asPrimitive(goal).equals(asPrimitive(obj.getClass()))) {
            return obj;
        } else {
            Converter converter = ConvertUtils.lookup(goal);
            return (null != converter) ? converter.convert(goal, obj) : obj;
        }
    }
}
 

import org.apache.commons.beanutils.ConvertUtils; //導入方法依賴的package包/類
@Override
public Object convert(Object tagValue, MethodParam methodParam) throws ViewBlockRequiredParameter {
	Converter converter = ConvertUtils.lookup(methodParam.getTypeClass());
	if (converter != null) {
		if (tagValue != null) {
			return convertUtilsBean1.convert(tagValue, methodParam.getTypeClass());
		} else if (methodParam.getDefValue() != null) {
			return methodParam.getDefValue();
		}
		return convertUtilsBean2.convert("", methodParam.getTypeClass());
	}
	return tagValue;
}
 

import org.apache.commons.beanutils.ConvertUtils; //導入方法依賴的package包/類
public Object convertOmit(Object dest, Object src, String[] omit)
        throws IllegalAccessException, InvocationTargetException {

    // Validate existence of the specified beans
    if (dest == null) {
        throw new IllegalArgumentException("No destination bean specified");
    }
    if (src == null) {
        throw new IllegalArgumentException("No origin bean specified");
    }
    if (log.isDebugEnabled()) {
        log.debug("BeanUtils.copyProperties(" + dest + ", " + src + ")");
    }
    org.apache.commons.beanutils.Converter converter= ConvertUtils.lookup(java.util.Date.class);
    System.out.println("ConvertUtils.lookup( java.util.Date.class): "+ converter);
    
    org.apache.commons.beanutils.Converter converter2= ConvertUtils.lookup(java.lang.String.class);
    System.out.println("ConvertUtils.lookup( java.lang.String.class): "+ converter2);
    // Copy the properties, converting as necessary
    if (src instanceof DynaBean) {
        copyDynaBean(dest, src);
    } else if (src instanceof Map) {
        copyMap(dest, src);
    } else /* if (src is a standard JavaBean) */{
        copyJavaBean(dest, src, omit);
    }
    return dest;
}
 

import org.apache.commons.beanutils.ConvertUtils; //導入方法依賴的package包/類
/**
 * オブジェクトを指定したクラスのインスタンスに変換して返します。
 * 変換の必要が無い場合はそのまま返します。
 *
 * @param expectedClass 戻り型として期待するクラス
 * @param value 変換する値
 * @return 変換後の値 (expectedClassのインスタンス)
 */
public static Object convert(Class expectedClass, Object value) {
    if (Object.class.equals(expectedClass) ||
            (value != null && expectedClass.isAssignableFrom(value.getClass()))) {
        return value;
    }
    if (String.class.equals(expectedClass)) {
        return (value != null) ? value.toString() : null;
    }
    if (Boolean.class.equals(expectedClass) || Boolean.TYPE.equals(expectedClass)) {
        if (value instanceof Boolean) {
            return value;
        }
        return Boolean.valueOf(ObjectUtil.booleanValue(value, false));
    }
    Converter converter = ConvertUtils.lookup(expectedClass);
    if (converter != null) {
    	if (value != null) {
    		return converter.convert(expectedClass, value);
    	}
    	if (expectedClass.isPrimitive() || Number.class.isAssignableFrom(expectedClass)) {
    		if (BigInteger.class.isAssignableFrom(expectedClass)) {
    			return BigInteger.ZERO;
    		} else if (BigDecimal.class.isAssignableFrom(expectedClass)) {
    			return BigDecimal.valueOf(0);
    		}
    		return converter.convert(expectedClass, value);
    	}
    }
    return value;
}
 

import org.apache.commons.beanutils.ConvertUtils; //導入方法依賴的package包/類
/**
 * 初始化 方法參數定義
 */
private void initialMethod() {
	isvoid = method.getReturnType().getName().equals("void");
	if (method.getParameterTypes().length == 0) {
		return;
	}
	methodParamMap = new LinkedHashMap<String, MethodParam>();
	methodParamList = new ArrayList<MethodParam>();
	Paranamer paranamer = new BytecodeReadingParanamer();
	String[] parameterNames = paranamer.lookupParameterNames(method);
	Annotation[][] pas = method.getParameterAnnotations();
	int i = 0;
	for (Class<?> typeClass : method.getParameterTypes()) {
		MethodParam mp = new MethodParam();
		String name = parameterNames[i];

		Convert convert = CONVERT_MAP.get(typeClass);
		if (typeClass.equals(BModelMap.class)) {
			if (modelMapParamIndex != null) {
				logger.error("view block only set one BModelMap");
			}
			modelMapParamIndex = i;
		} else if (convert == null) {
			convert = CONVERT_MAP.get(BRequestParam.class);
			for (Annotation a : pas[i]) {
				if (a.annotationType().equals(BRequestParam.class)) {
					BRequestParam p = (BRequestParam) a;
					boolean required = false;
					Object defValue = null;
					// RequestParam 注解
					if (p != null) {
						if (!"".equals(p.value())) {
							name = p.value();
						}
						if (!p.defaultValue().equals(ValueConstants.DEFAULT_NONE)) {
							if (ConvertUtils.lookup(typeClass) != null) {
								defValue = ConvertUtils.convert(p.defaultValue(), typeClass);
							}
						}
						required = p.required();
					}

					// others param
					mp.setRequired(required);
					mp.setDefValue(defValue);
					break;
				} else if (a.annotationType().equals(BModelAttribute.class)) {
					mp.setModelAttribute(true);
					break;
				}
			}
		}
		mp.setName(name);
		mp.setIndex(i);
		mp.setConvert(convert);
		mp.setTypeClass(typeClass);
		methodParamMap.put(mp.getName(), mp);
		methodParamList.add(mp);
		i++;
	}
}