Examples of org.apache.commons.beanutils.PropertyUtils

org.apache.commons.beanutils.PropertyUtils
Utility methods for using Java Reflection APIs to facilitate generic property getter and setter operations on Java objects. Much of this code was originally included in BeanUtils, but has been separated because of the volume of code involved.
In general, the objects that are examined and modified using these methods are expected to conform to the property getter and setter method naming conventions described in the JavaBeans Specification (Version 1.0.1). No data type conversions are performed, and there are no usage of any PropertyEditor classes that have been registered, although a convenient way to access the registered classes themselves is included.
For the purposes of this class, five formats for referencing a particular property value of a bean are defined, with the layout of an identifying String in parentheses:
- Simple (name) - The specified name identifies an individual property of a particular JavaBean. The name of the actual getter or setter method to be used is determined using standard JavaBeans instrospection, so that (unless overridden by a BeanInfo class, a property named "xyz" will have a getter method named getXyz() or (for boolean properties only) isXyz(), and a setter method named setXyz().
- Nested (name1.name2.name3) The first name element is used to select a property getter, as for simple references above. The object returned for this property is then consulted, using the same approach, for a property getter for a property named name2, and so on. The property value that is ultimately retrieved or modified is the one identified by the last name element.
- Indexed (name[index]) - The underlying property value is assumed to be an array, or this JavaBean is assumed to have indexed property getter and setter methods. The appropriate (zero-relative) entry in the array is selected.
- Mapped (name(key)) - The JavaBean is assumed to have an property getter and setter methods with an additional attribute of type java.lang.String.
- Combined (name1.name2[index].name3(key)) - Combining mapped, nested, and indexed references is also supported.
@author Craig R. McClanahan @author Ralph Schaer @author Chris Audley @author Rey Fran�ois @author Gregor Ra�man @version $Revision: 1.13 $ $Date: 2001/09/22 17:40:17 $

  public static void  populate(Object bean,HttpRequest request, Map<?, ?> m) 
  {
    ListOrderedMap orderedMap = new ListOrderedMap();
    Map<?, ?> map=request.getParameterMap();
    orderedMap.putAll(map);
    PropertyUtils propertyUtils = new PropertyUtils();
    @SuppressWarnings("unchecked")
    List<String> list=orderedMap.asList();
    for (String string : list) 
    {
      String[] name = StringUtils.split(string, ".");
      
      if (name.length==1) 
      {
        String objectString= (String) m.get(string);
        if (propertyUtils.isReadable(bean, string)&&propertyUtils.isWriteable(bean, string)&&objectString!=null)
        {
          try {
            if (StringUtils.containsIgnoreCase(objectString, "java.lang.String")) 
            {
              //设置String
              propertyUtils.setProperty(bean, string, request.getParameter(string));
            }else if (StringUtils.containsIgnoreCase(objectString, "java.lang.Integer")
                ||StringUtils.containsIgnoreCase(objectString, "java.lang.Short")
                ||StringUtils.containsIgnoreCase(objectString, "java.lang.Long")
                ||StringUtils.containsIgnoreCase(objectString, "java.lang.Float")
                ||StringUtils.containsIgnoreCase(objectString, "java.lang.Double")
                ||StringUtils.containsIgnoreCase(objectString, "java.lang.Byte")
                ||StringUtils.containsIgnoreCase(objectString, "java.math.BigInteger")
                ||StringUtils.containsIgnoreCase(objectString, "java.math.BigDecimal")) 
            {
              if (NumberUtils.isNumber(request.getParameter(string))) {
                //设置Number
                propertyUtils.setProperty(bean, string, NumberUtils.createNumber(request.getParameter(string)));
              }
              
            }else if (StringUtils.containsIgnoreCase(objectString, "java.util.Date")) 
            {
              String s = request.getParameter(string);
              if (StringUtils.isNotEmpty(s))
              {
                //设置时间
                String[] parsePatterns ={"yyyy/MM/dd","yyyy/MM/dd HH:mm:ss",
                    "yyyy.MM.dd","yyyy.MM.dd HH:mm:ss", 
                    "yyyy-MM-dd","yyyy-MM-dd HH:mm:ss",
                    "HH:mm:ss"};
                Date parsedDate = null;
                try {
                  parsedDate= DateUtils.parseDate(s,
                      parsePatterns);
                } catch (ParseException e ) {
                  log.error("{}不是正确的时间格式",s);
                }
                propertyUtils.setProperty(bean, string, parsedDate);
              }  
            }
            
          } catch (IllegalAccessException e)
          {log.error("给类{}赋值错误！",bean);}
          catch (InvocationTargetException e)
          {log.error("给类{}赋值错误！",bean);}
          catch ( NoSuchMethodException e) 
          {
            log.error("给类{}赋值错误！",bean);
          }
        }
      }else if (name.length==2) 
      {
        String objectString= (String) m.get(name[0]);
        if (StringUtils.isNotEmpty(objectString))
        {
          try {
        
            Object object=Class.forName(objectString).newInstance();
            if (propertyUtils.isReadable(bean, name[0])&&propertyUtils.isWriteable(bean, name[0])) 
            {
              if (PropertyUtils.getProperty(bean, name[0]) == null)
                      {
                //如果没有初始化，求初始
                        PropertyUtils.setProperty(bean, name[0], object);
                      }
                      ClassParsing cp = new ClassParsing();
                      ClassLoader classloader = object.getClass().getClassLoader();
                      if (classloader != null) {
                        URL url = classloader.getResource(StringUtils.replace(object.getClass().getName(), ".", "/") + ".class");
                        File file = FileUtils.toFile(url);
                        if (file != null)
                        {
                          ClassReader cr = new ClassReader(FileUtils.openInputStream(file));
                          cr.accept(cp, 0);
                        }
                      }
              Map<?, ?> ma=cp.getMap();
              String ob= (String) ma.get(name[1]);
              if (propertyUtils.isReadable(bean, string)&&propertyUtils.isWriteable(bean, string)&&ob!=null)
              {
                if (StringUtils.containsIgnoreCase(ob, "java.lang.String")) 
                {
                  propertyUtils.setProperty(bean, string, request.getParameter(string));
                }else if (StringUtils.containsIgnoreCase(ob, "java.lang.Integer")
                    ||StringUtils.containsIgnoreCase(ob, "java.lang.Short")
                    ||StringUtils.containsIgnoreCase(ob, "java.lang.Long")
                    ||StringUtils.containsIgnoreCase(ob, "java.lang.Float")
                    ||StringUtils.containsIgnoreCase(ob, "java.lang.Double")
                    ||StringUtils.containsIgnoreCase(ob, "java.lang.Byte")
                    ||StringUtils.containsIgnoreCase(ob, "java.math.BigInteger")
                    ||StringUtils.containsIgnoreCase(ob, "java.math.BigDecimal")) 
                {
                  if (NumberUtils.isNumber(request.getParameter(string))) {
                    propertyUtils.setProperty(bean, string, NumberUtils.createNumber(request.getParameter(string)));
                  }
                  
                }else if (StringUtils.containsIgnoreCase(ob, "java.util.Date")) 
                {
                  String s = request.getParameter(string);
                  if (StringUtils.isNotEmpty(s))
                  {
                    String[] parsePatterns ={"yyyy/MM/dd","yyyy/MM/dd HH:mm:ss",
                        "yyyy.MM.dd","yyyy.MM.dd HH:mm:ss", 
                        "yyyy-MM-dd","yyyy-MM-dd HH:mm:ss",
                        "HH:mm:ss"};
                    Date parsedDate = null;
                    try {
                      parsedDate= DateUtils.parseDate(s,
                          parsePatterns);
                    } catch (ParseException e ) {
                      log.error("{}不是正确的时间格式",s);
                    }
                    propertyUtils.setProperty(bean, string, parsedDate);
                  }  
                }
              }

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  public static void copyProperties(Object dest, Object orig){
    try {
      if (orig != null && dest != null){
        BeanUtils.copyProperties(dest, orig);
        
        PropertyUtils putils = new PropertyUtils();
              PropertyDescriptor origDescriptors[] = putils.getPropertyDescriptors(orig);


              for (int i = 0; i < origDescriptors.length; i++) {
                  String name = origDescriptors[i].getName();
                  if ("class".equals(name)) {
                      continue; // No point in trying to set an object's class
                  }
                  
                  Class propertyType = origDescriptors[i].getPropertyType();
          if (! Boolean.class.equals(propertyType) && ! (boolean.class.equals(propertyType) ))
                    continue;
                  
                  if (!putils.isReadable(orig, name)){ //because of bad convention 
                    Method m = orig.getClass().getMethod("is" + name.substring(0,1).toUpperCase() + name.substring(1)  , null);
                    Object value = m.invoke(orig, null);
                    
                    if (m!=null && putils.isWriteable(dest, name)){
                      BeanUtilsBean.getInstance().copyProperty(dest, name, value);
                    }
                  }
                  
              }

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  public static void copyProperties(Object dest, Object orig){
    try {
      if (orig != null && dest != null){
        BeanUtils.copyProperties(dest, orig);
        
        PropertyUtils putils = new PropertyUtils();
              PropertyDescriptor origDescriptors[] = putils.getPropertyDescriptors(orig);


              for (int i = 0; i < origDescriptors.length; i++) {
                  String name = origDescriptors[i].getName();
                  if ("class".equals(name)) {
                      continue; // No point in trying to set an object's class
                  }
                  
                  Class propertyType = origDescriptors[i].getPropertyType();
          if (! Boolean.class.equals(propertyType) && ! (boolean.class.equals(propertyType) ))
                    continue;
                  
                  if (!putils.isReadable(orig, name)){ //because of bad convention 
                    Method m = orig.getClass().getMethod("is" + name.substring(0,1).toUpperCase() + name.substring(1)  , null);
                    Object value = m.invoke(orig, null);
                    
                    if (m!=null && putils.isWriteable(dest, name)){
                      BeanUtilsBean.getInstance().copyProperty(dest, name, value);
                    }
                  }
                  
              }

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