Java Code Examples for org.springframework.beans.BeanWrapper#getPropertyType()

/***
	 * 如果cellValue为null，则尝试再次自动处理
	 * @param bw
	 * @param name
	 * @param cell
	 * @param cellValue
	 */
	protected void setBeanProperty(BeanWrapper bw, String name, Cell cell, Object cellValue){
		if(ExcelUtils.isBlank(name))
			return ;
		Object value = null;
		try {
			if(cellValue==null && autoGetCellValue){
				CellValueConvertor convertor = this.getCellValueConvertor(name);
				if(convertor==null){
					Class<?> type = bw.getPropertyType(name);
					if(type!=null)
						convertor = this.getCellValueConvertor(type.getSimpleName());
				}
				if(convertor!=null){
					value = convertor.convert(cell);
				}else{
//					value = ExcelUtils.getCellValue(cell);
					value = ExcelUtils.getCellValue(cell, convertCellTypeAsString);
				}
			}else{
				value = cellValue;
			}
			/*if(value!=null && (!String.class.isInstance(value) || !ExcelUtils.isBlank((String)value)))
				bw.setPropertyValue(name, value);*/
			this.setBeanProperty(bw, name, value);
		} catch (Exception e) {
			throw new ExcelException("row:"+cell.getRowIndex()+",set property["+name+"] error, value: "+value, e);
		}
	}
 

/**
 * Obtains the descriptor of the filtered field
 * 
 * @param fieldName
 * @param entityType
 * @return
 */
public static <T> TypeDescriptor getTypeDescriptor(String fieldName,
        Class<T> entityType) {
    String fieldNameToFindType = fieldName;
    BeanWrapper beanWrapper = getBeanWrapper(entityType);

    TypeDescriptor fieldDescriptor = null;
    Class<?> propType = null;
    // Find recursive the las beanWrapper
    if (fieldName.contains(SEPARATOR_FIELDS)) {
        String[] fieldNameSplitted = StringUtils.split(fieldName,
                SEPARATOR_FIELDS);
        for (int i = 0; i < fieldNameSplitted.length - 1; i++) {
            propType = beanWrapper.getPropertyType(fieldNameSplitted[i]);
            if (propType == null) {
                throw new IllegalArgumentException(String.format(
                        "Property %s not found in %s (request %s.%s)",
                        fieldNameSplitted[i],
                        beanWrapper.getWrappedClass(), entityType,
                        fieldName));
            }
            beanWrapper = getBeanWrapper(propType);
        }
        fieldNameToFindType = fieldNameSplitted[fieldNameSplitted.length - 1];
    }
    fieldDescriptor = beanWrapper
            .getPropertyTypeDescriptor(fieldNameToFindType);

    return fieldDescriptor;
}
 

/**
 * {@inheritDoc}
 */
@Override
public <T> TypeDescriptor getTypeDescriptor(String fieldName,
        Class<T> entityType) {
    String fieldNameToFindType = fieldName;
    BeanWrapper beanWrapper = getBeanWrapper(entityType);

    TypeDescriptor fieldDescriptor = null;
    Class<?> propType = null;
    // Find recursive the las beanWrapper
    if (fieldName.contains(SEPARATOR_FIELDS)) {
        String[] fieldNameSplitted = StringUtils.split(fieldName,
                SEPARATOR_FIELDS);
        for (int i = 0; i < fieldNameSplitted.length - 1; i++) {
            propType = beanWrapper.getPropertyType(fieldNameSplitted[i]);
            if (propType == null) {
                throw new IllegalArgumentException(String.format(
                        "Property %s not found in %s (request %s.%s)",
                        fieldNameSplitted[i],
                        beanWrapper.getWrappedClass(), entityType,
                        fieldName));
            }
            beanWrapper = getBeanWrapper(propType);
        }
        fieldNameToFindType = fieldNameSplitted[fieldNameSplitted.length - 1];
    }
    fieldDescriptor = beanWrapper
            .getPropertyTypeDescriptor(fieldNameToFindType);

    return fieldDescriptor;
}
 

/**
 * Create a new BindStatus instance, representing a field or object status.
 * @param requestContext the current RequestContext
 * @param path the bean and property path for which values and errors
 * will be resolved (e.g. "customer.address.street")
 * @param htmlEscape whether to HTML-escape error messages and string values
 * @throws IllegalStateException if no corresponding Errors object found
 */
public BindStatus(RequestContext requestContext, String path, boolean htmlEscape) throws IllegalStateException {
	this.requestContext = requestContext;
	this.path = path;
	this.htmlEscape = htmlEscape;

	// determine name of the object and property
	String beanName;
	int dotPos = path.indexOf('.');
	if (dotPos == -1) {
		// property not set, only the object itself
		beanName = path;
		this.expression = null;
	}
	else {
		beanName = path.substring(0, dotPos);
		this.expression = path.substring(dotPos + 1);
	}

	this.errors = requestContext.getErrors(beanName, false);

	if (this.errors != null) {
		// Usual case: A BindingResult is available as request attribute.
		// Can determine error codes and messages for the given expression.
		// Can use a custom PropertyEditor, as registered by a form controller.
		if (this.expression != null) {
			if ("*".equals(this.expression)) {
				this.objectErrors = this.errors.getAllErrors();
			}
			else if (this.expression.endsWith("*")) {
				this.objectErrors = this.errors.getFieldErrors(this.expression);
			}
			else {
				this.objectErrors = this.errors.getFieldErrors(this.expression);
				this.value = this.errors.getFieldValue(this.expression);
				this.valueType = this.errors.getFieldType(this.expression);
				if (this.errors instanceof BindingResult) {
					this.bindingResult = (BindingResult) this.errors;
					this.actualValue = this.bindingResult.getRawFieldValue(this.expression);
					this.editor = this.bindingResult.findEditor(this.expression, null);
				}
				else {
					this.actualValue = this.value;
				}
			}
		}
		else {
			this.objectErrors = this.errors.getGlobalErrors();
		}
		this.errorCodes = initErrorCodes(this.objectErrors);
	}

	else {
		// No BindingResult available as request attribute:
		// Probably forwarded directly to a form view.
		// Let's do the best we can: extract a plain target if appropriate.
		Object target = requestContext.getModelObject(beanName);
		if (target == null) {
			throw new IllegalStateException(
					"Neither BindingResult nor plain target object for bean name '" +
					beanName + "' available as request attribute");
		}
		if (this.expression != null && !"*".equals(this.expression) && !this.expression.endsWith("*")) {
			BeanWrapper bw = PropertyAccessorFactory.forBeanPropertyAccess(target);
			this.value = bw.getPropertyValue(this.expression);
			this.valueType = bw.getPropertyType(this.expression);
			this.actualValue = this.value;
		}
		this.errorCodes = new String[0];
		this.errorMessages = new String[0];
	}

	if (htmlEscape && this.value instanceof String) {
		this.value = HtmlUtils.htmlEscape((String) this.value);
	}
}
 

/**
 * Create a new BindStatus instance, representing a field or object status.
 * @param requestContext the current RequestContext
 * @param path the bean and property path for which values and errors
 * will be resolved (e.g. "customer.address.street")
 * @param htmlEscape whether to HTML-escape error messages and string values
 * @throws IllegalStateException if no corresponding Errors object found
 */
public BindStatus(RequestContext requestContext, String path, boolean htmlEscape) throws IllegalStateException {
	this.requestContext = requestContext;
	this.path = path;
	this.htmlEscape = htmlEscape;

	// determine name of the object and property
	String beanName;
	int dotPos = path.indexOf('.');
	if (dotPos == -1) {
		// property not set, only the object itself
		beanName = path;
		this.expression = null;
	}
	else {
		beanName = path.substring(0, dotPos);
		this.expression = path.substring(dotPos + 1);
	}

	this.errors = requestContext.getErrors(beanName, false);

	if (this.errors != null) {
		// Usual case: A BindingResult is available as request attribute.
		// Can determine error codes and messages for the given expression.
		// Can use a custom PropertyEditor, as registered by a form controller.
		if (this.expression != null) {
			if ("*".equals(this.expression)) {
				this.objectErrors = this.errors.getAllErrors();
			}
			else if (this.expression.endsWith("*")) {
				this.objectErrors = this.errors.getFieldErrors(this.expression);
			}
			else {
				this.objectErrors = this.errors.getFieldErrors(this.expression);
				this.value = this.errors.getFieldValue(this.expression);
				this.valueType = this.errors.getFieldType(this.expression);
				if (this.errors instanceof BindingResult) {
					this.bindingResult = (BindingResult) this.errors;
					this.actualValue = this.bindingResult.getRawFieldValue(this.expression);
					this.editor = this.bindingResult.findEditor(this.expression, null);
				}
				else {
					this.actualValue = this.value;
				}
			}
		}
		else {
			this.objectErrors = this.errors.getGlobalErrors();
		}
		this.errorCodes = initErrorCodes(this.objectErrors);
	}

	else {
		// No BindingResult available as request attribute:
		// Probably forwarded directly to a form view.
		// Let's do the best we can: extract a plain target if appropriate.
		Object target = requestContext.getModelObject(beanName);
		if (target == null) {
			throw new IllegalStateException("Neither BindingResult nor plain target object for bean name '" +
					beanName + "' available as request attribute");
		}
		if (this.expression != null && !"*".equals(this.expression) && !this.expression.endsWith("*")) {
			BeanWrapper bw = PropertyAccessorFactory.forBeanPropertyAccess(target);
			this.value = bw.getPropertyValue(this.expression);
			this.valueType = bw.getPropertyType(this.expression);
			this.actualValue = this.value;
		}
		this.errorCodes = new String[0];
		this.errorMessages = new String[0];
	}

	if (htmlEscape && this.value instanceof String) {
		this.value = HtmlUtils.htmlEscape((String) this.value);
	}
}
 

/**
 * 类型转换：实体Vo <->实体  例如：UserVo <-> User
 * 支持一级复杂对象复制
 */
public static <T> T copy(Object src, Class<T> targetType) {
    T target = null;
    try {
        //创建一个空目标对象，并获取一个BeanWrapper代理器，用于属性填充，BeanWrapperImpl在内部使用Spring的BeanUtils工具类对Bean进行反射操作，设置属性。
        target = targetType.newInstance();
        BeanWrapper targetBean = new BeanWrapperImpl(target);

        //获取源对象的BeanMap，属性和属性值直接转换为Map的key-value 形式
        BeanMap srcBean = new BeanMap(src);
        for (Object key : srcBean.keySet()) {
            //源对象属性名称
            String srcPropertyName = key + "";
            //源对象属性值
            Object srcPropertyVal = srcBean.get(key);
            //源对象属性类型
            Class srcPropertyType = srcBean.getType(srcPropertyName);
            //目标对象属性类型
            Class targetPropertyType = targetBean.getPropertyType(srcPropertyName);

            //源对象属性值非空判断、目标对象属性类型非空判断，如果为空跳出，继续操作下一个属性
            if ("class".equals(srcPropertyName) || targetPropertyType == null) {
                continue;
            }

            //类型相等，可直接设置值，比如：String与String 或者 User与User
            if (srcPropertyType == targetPropertyType) {
                targetBean.setPropertyValue(srcPropertyName, srcPropertyVal);
            }
            //类型不相等，比如：User与UserVo
            else {
                /*     下面的步骤与上面的步骤基本一致      */

                //如果源复杂对象为null，直接跳过，不需要复制
                if(srcPropertyVal == null){
                    continue;
                }

                Object targetPropertyVal = targetPropertyType.newInstance();
                BeanWrapper targetPropertyBean = new BeanWrapperImpl(targetPropertyVal);

                BeanMap srcPropertyBean = new BeanMap(srcPropertyVal);
                for (Object srcPropertyBeanKey : srcPropertyBean.keySet()) {
                    String srcPropertyBeanPropertyName = srcPropertyBeanKey + "";
                    Object srcPropertyBeanPropertyVal = srcPropertyBean.get(srcPropertyBeanKey);
                    Class srcPropertyBeanPropertyType = srcPropertyBean.getType(srcPropertyBeanPropertyName);
                    Class targetPropertyBeanPropertyType = targetPropertyBean.getPropertyType(srcPropertyBeanPropertyName);

                    if ("class".equals(srcPropertyBeanPropertyName) || targetPropertyBeanPropertyType == null) {
                        continue;
                    }

                    if (srcPropertyBeanPropertyType == targetPropertyBeanPropertyType) {
                        targetPropertyBean.setPropertyValue(srcPropertyBeanPropertyName, srcPropertyBeanPropertyVal);
                    } else {
                        //复杂对象里面的复杂对象不再进行处理
                    }
                }
                //设置目标对象属性值
                targetBean.setPropertyValue(srcPropertyName, targetPropertyBean.getWrappedInstance());
            }
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
    return target;
}
 

/**
 * 类型转换：实体Vo <->实体  例如：UserVo <-> User
 * 支持一级复杂对象复制
 */
public static <T> T copy(Object src, Class<T> targetType) {
    T target = null;
    try {
        //创建一个空目标对象，并获取一个BeanWrapper代理器，用于属性填充，BeanWrapperImpl在内部使用Spring的BeanUtils工具类对Bean进行反射操作，设置属性。
        target = targetType.newInstance();
        BeanWrapper targetBean = new BeanWrapperImpl(target);

        //获取源对象的BeanMap，属性和属性值直接转换为Map的key-value 形式
        BeanMap srcBean = new BeanMap(src);
        for (Object key : srcBean.keySet()) {
            //源对象属性名称
            String srcPropertyName = key + "";
            //源对象属性值
            Object srcPropertyVal = srcBean.get(key);
            //源对象属性类型
            Class srcPropertyType = srcBean.getType(srcPropertyName);
            //目标对象属性类型
            Class targetPropertyType = targetBean.getPropertyType(srcPropertyName);

            //源对象属性值非空判断、目标对象属性类型非空判断，如果为空跳出，继续操作下一个属性
            if ("class".equals(srcPropertyName) || targetPropertyType == null) {
                continue;
            }

            //类型相等，可直接设置值，比如：String与String 或者 User与User
            if (srcPropertyType == targetPropertyType) {
                targetBean.setPropertyValue(srcPropertyName, srcPropertyVal);
            }
            //类型不相等，比如：User与UserVo
            else {
                /*     下面的步骤与上面的步骤基本一致      */

                //如果源复杂对象为null，直接跳过，不需要复制
                if(srcPropertyVal == null){
                    continue;
                }

                Object targetPropertyVal = targetPropertyType.newInstance();
                BeanWrapper targetPropertyBean = new BeanWrapperImpl(targetPropertyVal);

                BeanMap srcPropertyBean = new BeanMap(srcPropertyVal);
                for (Object srcPropertyBeanKey : srcPropertyBean.keySet()) {
                    String srcPropertyBeanPropertyName = srcPropertyBeanKey + "";
                    Object srcPropertyBeanPropertyVal = srcPropertyBean.get(srcPropertyBeanKey);
                    Class srcPropertyBeanPropertyType = srcPropertyBean.getType(srcPropertyBeanPropertyName);
                    Class targetPropertyBeanPropertyType = targetPropertyBean.getPropertyType(srcPropertyBeanPropertyName);

                    if ("class".equals(srcPropertyBeanPropertyName) || targetPropertyBeanPropertyType == null) {
                        continue;
                    }

                    if (srcPropertyBeanPropertyType == targetPropertyBeanPropertyType) {
                        targetPropertyBean.setPropertyValue(srcPropertyBeanPropertyName, srcPropertyBeanPropertyVal);
                    } else {
                        //复杂对象里面的复杂对象不再进行处理
                    }
                }
                //设置目标对象属性值
                targetBean.setPropertyValue(srcPropertyName, targetPropertyBean.getWrappedInstance());
            }
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
    return target;
}
 

/**
 * 类型转换：实体Vo <->实体  例如：UserVo <-> User
 * 支持一级复杂对象复制
 */
public static <T> T copy(Object src, Class<T> targetType) {
    T target = null;
    try {
        //创建一个空目标对象，并获取一个BeanWrapper代理器，用于属性填充，BeanWrapperImpl在内部使用Spring的BeanUtils工具类对Bean进行反射操作，设置属性。
        target = targetType.newInstance();
        BeanWrapper targetBean = new BeanWrapperImpl(target);

        //获取源对象的BeanMap，属性和属性值直接转换为Map的key-value 形式
        BeanMap srcBean = new BeanMap(src);
        for (Object key : srcBean.keySet()) {
            //源对象属性名称
            String srcPropertyName = key + "";
            //源对象属性值
            Object srcPropertyVal = srcBean.get(key);
            //源对象属性类型
            Class srcPropertyType = srcBean.getType(srcPropertyName);
            //目标对象属性类型
            Class targetPropertyType = targetBean.getPropertyType(srcPropertyName);

            //源对象属性值非空判断、目标对象属性类型非空判断，如果为空跳出，继续操作下一个属性
            if ("class".equals(srcPropertyName) || targetPropertyType == null) {
                continue;
            }

            //类型相等，可直接设置值，比如：String与String 或者 User与User
            if (srcPropertyType == targetPropertyType) {
                targetBean.setPropertyValue(srcPropertyName, srcPropertyVal);
            }
            //类型不相等，比如：User与UserVo
            else {
                /*     下面的步骤与上面的步骤基本一致      */

                //如果源复杂对象为null，直接跳过，不需要复制
                if(srcPropertyVal == null){
                    continue;
                }

                Object targetPropertyVal = targetPropertyType.newInstance();
                BeanWrapper targetPropertyBean = new BeanWrapperImpl(targetPropertyVal);

                BeanMap srcPropertyBean = new BeanMap(srcPropertyVal);
                for (Object srcPropertyBeanKey : srcPropertyBean.keySet()) {
                    String srcPropertyBeanPropertyName = srcPropertyBeanKey + "";
                    Object srcPropertyBeanPropertyVal = srcPropertyBean.get(srcPropertyBeanKey);
                    Class srcPropertyBeanPropertyType = srcPropertyBean.getType(srcPropertyBeanPropertyName);
                    Class targetPropertyBeanPropertyType = targetPropertyBean.getPropertyType(srcPropertyBeanPropertyName);

                    if ("class".equals(srcPropertyBeanPropertyName) || targetPropertyBeanPropertyType == null) {
                        continue;
                    }

                    if (srcPropertyBeanPropertyType == targetPropertyBeanPropertyType) {
                        targetPropertyBean.setPropertyValue(srcPropertyBeanPropertyName, srcPropertyBeanPropertyVal);
                    } else {
                        //复杂对象里面的复杂对象不再进行处理
                    }
                }
                //设置目标对象属性值
                targetBean.setPropertyValue(srcPropertyName, targetPropertyBean.getWrappedInstance());
            }
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
    return target;
}
 

/**
 * 类型转换：实体Vo <->实体  例如：UserVo <-> User
 * 支持一级复杂对象复制
 */
public static <T> T copy(Object src, Class<T> targetType) {
    T target = null;
    try {
        //创建一个空目标对象，并获取一个BeanWrapper代理器，用于属性填充，BeanWrapperImpl在内部使用Spring的BeanUtils工具类对Bean进行反射操作，设置属性。
        target = targetType.newInstance();
        BeanWrapper targetBean = new BeanWrapperImpl(target);

        //获取源对象的BeanMap，属性和属性值直接转换为Map的key-value 形式
        BeanMap srcBean = new BeanMap(src);
        for (Object key : srcBean.keySet()) {
            //源对象属性名称
            String srcPropertyName = key + "";
            //源对象属性值
            Object srcPropertyVal = srcBean.get(key);
            //源对象属性类型
            Class srcPropertyType = srcBean.getType(srcPropertyName);
            //目标对象属性类型
            Class targetPropertyType = targetBean.getPropertyType(srcPropertyName);

            //源对象属性值非空判断、目标对象属性类型非空判断，如果为空跳出，继续操作下一个属性
            if ("class".equals(srcPropertyName) || targetPropertyType == null) {
                continue;
            }

            //类型相等，可直接设置值，比如：String与String 或者 User与User
            if (srcPropertyType == targetPropertyType) {
                targetBean.setPropertyValue(srcPropertyName, srcPropertyVal);
            }
            //类型不相等，比如：User与UserVo
            else {
                /*     下面的步骤与上面的步骤基本一致      */

                //如果源复杂对象为null，直接跳过，不需要复制
                if(srcPropertyVal == null){
                    continue;
                }

                Object targetPropertyVal = targetPropertyType.newInstance();
                BeanWrapper targetPropertyBean = new BeanWrapperImpl(targetPropertyVal);

                BeanMap srcPropertyBean = new BeanMap(srcPropertyVal);
                for (Object srcPropertyBeanKey : srcPropertyBean.keySet()) {
                    String srcPropertyBeanPropertyName = srcPropertyBeanKey + "";
                    Object srcPropertyBeanPropertyVal = srcPropertyBean.get(srcPropertyBeanKey);
                    Class srcPropertyBeanPropertyType = srcPropertyBean.getType(srcPropertyBeanPropertyName);
                    Class targetPropertyBeanPropertyType = targetPropertyBean.getPropertyType(srcPropertyBeanPropertyName);

                    if ("class".equals(srcPropertyBeanPropertyName) || targetPropertyBeanPropertyType == null) {
                        continue;
                    }

                    if (srcPropertyBeanPropertyType == targetPropertyBeanPropertyType) {
                        targetPropertyBean.setPropertyValue(srcPropertyBeanPropertyName, srcPropertyBeanPropertyVal);
                    } else {
                        //复杂对象里面的复杂对象不再进行处理
                    }
                }
                //设置目标对象属性值
                targetBean.setPropertyValue(srcPropertyName, targetPropertyBean.getWrappedInstance());
            }
        }
    } catch (Exception e) {
        //输出到日志文件中
        log.error(ErrorUtil.errorInfoToString(e));
    }
    return target;
}
 

/**
 * Create a new BindStatus instance, representing a field or object status.
 * @param requestContext the current RequestContext
 * @param path the bean and property path for which values and errors
 * will be resolved (e.g. "customer.address.street")
 * @param htmlEscape whether to HTML-escape error messages and string values
 * @throws IllegalStateException if no corresponding Errors object found
 */
public BindStatus(RequestContext requestContext, String path, boolean htmlEscape) throws IllegalStateException {
	this.requestContext = requestContext;
	this.path = path;
	this.htmlEscape = htmlEscape;

	// determine name of the object and property
	String beanName;
	int dotPos = path.indexOf('.');
	if (dotPos == -1) {
		// property not set, only the object itself
		beanName = path;
		this.expression = null;
	}
	else {
		beanName = path.substring(0, dotPos);
		this.expression = path.substring(dotPos + 1);
	}

	this.errors = requestContext.getErrors(beanName, false);

	if (this.errors != null) {
		// Usual case: A BindingResult is available as request attribute.
		// Can determine error codes and messages for the given expression.
		// Can use a custom PropertyEditor, as registered by a form controller.
		if (this.expression != null) {
			if ("*".equals(this.expression)) {
				this.objectErrors = this.errors.getAllErrors();
			}
			else if (this.expression.endsWith("*")) {
				this.objectErrors = this.errors.getFieldErrors(this.expression);
			}
			else {
				this.objectErrors = this.errors.getFieldErrors(this.expression);
				this.value = this.errors.getFieldValue(this.expression);
				this.valueType = this.errors.getFieldType(this.expression);
				if (this.errors instanceof BindingResult) {
					this.bindingResult = (BindingResult) this.errors;
					this.actualValue = this.bindingResult.getRawFieldValue(this.expression);
					this.editor = this.bindingResult.findEditor(this.expression, null);
				}
				else {
					this.actualValue = this.value;
				}
			}
		}
		else {
			this.objectErrors = this.errors.getGlobalErrors();
		}
		this.errorCodes = initErrorCodes(this.objectErrors);
	}

	else {
		// No BindingResult available as request attribute:
		// Probably forwarded directly to a form view.
		// Let's do the best we can: extract a plain target if appropriate.
		Object target = requestContext.getModelObject(beanName);
		if (target == null) {
			throw new IllegalStateException(
					"Neither BindingResult nor plain target object for bean name '" +
					beanName + "' available as request attribute");
		}
		if (this.expression != null && !"*".equals(this.expression) && !this.expression.endsWith("*")) {
			BeanWrapper bw = PropertyAccessorFactory.forBeanPropertyAccess(target);
			this.value = bw.getPropertyValue(this.expression);
			this.valueType = bw.getPropertyType(this.expression);
			this.actualValue = this.value;
		}
		this.errorCodes = new String[0];
		this.errorMessages = new String[0];
	}

	if (htmlEscape && this.value instanceof String) {
		this.value = HtmlUtils.htmlEscape((String) this.value);
	}
}
 

/**
 * Create a new BindStatus instance, representing a field or object status.
 * @param requestContext the current RequestContext
 * @param path the bean and property path for which values and errors
 * will be resolved (e.g. "customer.address.street")
 * @param htmlEscape whether to HTML-escape error messages and string values
 * @throws IllegalStateException if no corresponding Errors object found
 */
public BindStatus(RequestContext requestContext, String path, boolean htmlEscape) throws IllegalStateException {
	this.requestContext = requestContext;
	this.path = path;
	this.htmlEscape = htmlEscape;

	// determine name of the object and property
	String beanName;
	int dotPos = path.indexOf('.');
	if (dotPos == -1) {
		// property not set, only the object itself
		beanName = path;
		this.expression = null;
	}
	else {
		beanName = path.substring(0, dotPos);
		this.expression = path.substring(dotPos + 1);
	}

	this.errors = requestContext.getErrors(beanName, false);

	if (this.errors != null) {
		// Usual case: A BindingResult is available as request attribute.
		// Can determine error codes and messages for the given expression.
		// Can use a custom PropertyEditor, as registered by a form controller.
		if (this.expression != null) {
			if ("*".equals(this.expression)) {
				this.objectErrors = this.errors.getAllErrors();
			}
			else if (this.expression.endsWith("*")) {
				this.objectErrors = this.errors.getFieldErrors(this.expression);
			}
			else {
				this.objectErrors = this.errors.getFieldErrors(this.expression);
				this.value = this.errors.getFieldValue(this.expression);
				this.valueType = this.errors.getFieldType(this.expression);
				if (this.errors instanceof BindingResult) {
					this.bindingResult = (BindingResult) this.errors;
					this.actualValue = this.bindingResult.getRawFieldValue(this.expression);
					this.editor = this.bindingResult.findEditor(this.expression, null);
				}
				else {
					this.actualValue = this.value;
				}
			}
		}
		else {
			this.objectErrors = this.errors.getGlobalErrors();
		}
		this.errorCodes = initErrorCodes(this.objectErrors);
	}

	else {
		// No BindingResult available as request attribute:
		// Probably forwarded directly to a form view.
		// Let's do the best we can: extract a plain target if appropriate.
		Object target = requestContext.getModelObject(beanName);
		if (target == null) {
			throw new IllegalStateException("Neither BindingResult nor plain target object for bean name '" +
					beanName + "' available as request attribute");
		}
		if (this.expression != null && !"*".equals(this.expression) && !this.expression.endsWith("*")) {
			BeanWrapper bw = PropertyAccessorFactory.forBeanPropertyAccess(target);
			this.value = bw.getPropertyValue(this.expression);
			this.valueType = bw.getPropertyType(this.expression);
			this.actualValue = this.value;
		}
		this.errorCodes = new String[0];
		this.errorMessages = new String[0];
	}

	if (htmlEscape && this.value instanceof String) {
		this.value = HtmlUtils.htmlEscape((String) this.value);
	}
}
 

/**
 * Create a new BindStatus instance, representing a field or object status.
 * @param requestContext the current RequestContext
 * @param path the bean and property path for which values and errors
 * will be resolved (e.g. "customer.address.street")
 * @param htmlEscape whether to HTML-escape error messages and string values
 * @throws IllegalStateException if no corresponding Errors object found
 */
public BindStatus(RequestContext requestContext, String path, boolean htmlEscape)
		throws IllegalStateException {

	this.requestContext = requestContext;
	this.path = path;
	this.htmlEscape = htmlEscape;

	// determine name of the object and property
	String beanName;
	int dotPos = path.indexOf('.');
	if (dotPos == -1) {
		// property not set, only the object itself
		beanName = path;
		this.expression = null;
	}
	else {
		beanName = path.substring(0, dotPos);
		this.expression = path.substring(dotPos + 1);
	}

	this.errors = requestContext.getErrors(beanName, false);

	if (this.errors != null) {
		// Usual case: A BindingResult is available as request attribute.
		// Can determine error codes and messages for the given expression.
		// Can use a custom PropertyEditor, as registered by a form controller.
		if (this.expression != null) {
			if ("*".equals(this.expression)) {
				this.objectErrors = this.errors.getAllErrors();
			}
			else if (this.expression.endsWith("*")) {
				this.objectErrors = this.errors.getFieldErrors(this.expression);
			}
			else {
				this.objectErrors = this.errors.getFieldErrors(this.expression);
				this.value = this.errors.getFieldValue(this.expression);
				this.valueType = this.errors.getFieldType(this.expression);
				if (this.errors instanceof BindingResult) {
					this.bindingResult = (BindingResult) this.errors;
					this.actualValue = this.bindingResult.getRawFieldValue(this.expression);
					this.editor = this.bindingResult.findEditor(this.expression, null);
				}
				else {
					this.actualValue = this.value;
				}
			}
		}
		else {
			this.objectErrors = this.errors.getGlobalErrors();
		}
		initErrorCodes();
	}

	else {
		// No BindingResult available as request attribute:
		// Probably forwarded directly to a form view.
		// Let's do the best we can: extract a plain target if appropriate.
		Object target = requestContext.getModelObject(beanName);
		if (target == null) {
			throw new IllegalStateException("Neither BindingResult nor plain target object for bean name '" +
					beanName + "' available as request attribute");
		}
		if (this.expression != null && !"*".equals(this.expression) && !this.expression.endsWith("*")) {
			BeanWrapper bw = PropertyAccessorFactory.forBeanPropertyAccess(target);
			this.value = bw.getPropertyValue(this.expression);
			this.valueType = bw.getPropertyType(this.expression);
			this.actualValue = this.value;
		}
		this.errorCodes = new String[0];
		this.errorMessages = new String[0];
	}

	if (htmlEscape && this.value instanceof String) {
		this.value = HtmlUtils.htmlEscape((String) this.value);
	}
}
 

/**
 * Create a new BindStatus instance, representing a field or object status.
 * @param requestContext the current RequestContext
 * @param path the bean and property path for which values and errors
 * will be resolved (e.g. "customer.address.street")
 * @param htmlEscape whether to HTML-escape error messages and string values
 * @throws IllegalStateException if no corresponding Errors object found
 */
public BindStatus(RequestContext requestContext, String path, boolean htmlEscape)
		throws IllegalStateException {

	this.requestContext = requestContext;
	this.path = path;
	this.htmlEscape = htmlEscape;

	// determine name of the object and property
	String beanName;
	int dotPos = path.indexOf('.');
	if (dotPos == -1) {
		// property not set, only the object itself
		beanName = path;
		this.expression = null;
	}
	else {
		beanName = path.substring(0, dotPos);
		this.expression = path.substring(dotPos + 1);
	}

	this.errors = requestContext.getErrors(beanName, false);

	if (this.errors != null) {
		// Usual case: A BindingResult is available as request attribute.
		// Can determine error codes and messages for the given expression.
		// Can use a custom PropertyEditor, as registered by a form controller.
		if (this.expression != null) {
			if ("*".equals(this.expression)) {
				this.objectErrors = this.errors.getAllErrors();
			}
			else if (this.expression.endsWith("*")) {
				this.objectErrors = this.errors.getFieldErrors(this.expression);
			}
			else {
				this.objectErrors = this.errors.getFieldErrors(this.expression);
				this.value = this.errors.getFieldValue(this.expression);
				this.valueType = this.errors.getFieldType(this.expression);
				if (this.errors instanceof BindingResult) {
					this.bindingResult = (BindingResult) this.errors;
					this.actualValue = this.bindingResult.getRawFieldValue(this.expression);
					this.editor = this.bindingResult.findEditor(this.expression, null);
				}
				else {
					this.actualValue = this.value;
				}
			}
		}
		else {
			this.objectErrors = this.errors.getGlobalErrors();
		}
		initErrorCodes();
	}

	else {
		// No BindingResult available as request attribute:
		// Probably forwarded directly to a form view.
		// Let's do the best we can: extract a plain target if appropriate.
		Object target = requestContext.getModelObject(beanName);
		if (target == null) {
			throw new IllegalStateException("Neither BindingResult nor plain target object for bean name '" +
					beanName + "' available as request attribute");
		}
		if (this.expression != null && !"*".equals(this.expression) && !this.expression.endsWith("*")) {
			BeanWrapper bw = PropertyAccessorFactory.forBeanPropertyAccess(target);
			this.value = bw.getPropertyValue(this.expression);
			this.valueType = bw.getPropertyType(this.expression);
			this.actualValue = this.value;
		}
		this.errorCodes = new String[0];
		this.errorMessages = new String[0];
	}

	if (htmlEscape && this.value instanceof String) {
		this.value = HtmlUtils.htmlEscape((String) this.value);
	}
}