Java WebDataBinder.getTarget方法代码示例

import org.springframework.web.bind.WebDataBinder; //导入方法依赖的package包/类
@Override
public void initBinder(WebDataBinder binder, WebRequest request) {
	binder.setAutoGrowNestedPaths(this.autoGrowNestedPaths);
	if (this.directFieldAccess) {
		binder.initDirectFieldAccess();
	}
	if (this.messageCodesResolver != null) {
		binder.setMessageCodesResolver(this.messageCodesResolver);
	}
	if (this.bindingErrorProcessor != null) {
		binder.setBindingErrorProcessor(this.bindingErrorProcessor);
	}
	if (this.validator != null && binder.getTarget() != null &&
			this.validator.supports(binder.getTarget().getClass())) {
		binder.setValidator(this.validator);
	}
	if (this.conversionService != null) {
		binder.setConversionService(this.conversionService);
	}
	if (this.propertyEditorRegistrars != null) {
		for (PropertyEditorRegistrar propertyEditorRegistrar : this.propertyEditorRegistrars) {
			propertyEditorRegistrar.registerCustomEditors(binder);
		}
	}
}
 

import org.springframework.web.bind.WebDataBinder; //导入方法依赖的package包/类
/**
 * Resolve the argument from the model or if not found instantiate it with
 * its default if it is available. The model attribute is then populated
 * with request values via data binding and optionally validated
 * if {@code @java.validation.Valid} is present on the argument.
 * @throws BindException if data binding and validation result in an error
 * and the next method parameter is not of type {@link Errors}.
 * @throws Exception if WebDataBinder initialization fails.
 */
@Override
public final Object resolveArgument(MethodParameter parameter, ModelAndViewContainer mavContainer,
		NativeWebRequest webRequest, WebDataBinderFactory binderFactory) throws Exception {

	String name = ModelFactory.getNameForParameter(parameter);
	Object attribute = (mavContainer.containsAttribute(name) ?
			mavContainer.getModel().get(name) : createAttribute(name, parameter, binderFactory, webRequest));

	WebDataBinder binder = binderFactory.createBinder(webRequest, attribute, name);
	if (binder.getTarget() != null) {
		bindRequestParameters(binder, webRequest);
		validateIfApplicable(binder, parameter);
		if (binder.getBindingResult().hasErrors() && isBindExceptionRequired(binder, parameter)) {
			throw new BindException(binder.getBindingResult());
		}
	}

	// Add resolved attribute and BindingResult at the end of the model
	Map<String, Object> bindingResultModel = binder.getBindingResult().getModel();
	mavContainer.removeAttributes(bindingResultModel);
	mavContainer.addAllAttributes(bindingResultModel);

	return binder.convertIfNecessary(binder.getTarget(), parameter.getParameterType(), parameter);
}
 

import org.springframework.web.bind.WebDataBinder; //导入方法依赖的package包/类
/**
 * Resolve the argument from the model or if not found instantiate it with
 * its default if it is available. The model attribute is then populated
 * with request values via data binding and optionally validated
 * if {@code @java.validation.Valid} is present on the argument.
 * @throws BindException if data binding and validation result in an error
 * and the next method parameter is not of type {@link Errors}.
 * @throws Exception if WebDataBinder initialization fails.
 */
@Override
public final Object resolveArgument(
		MethodParameter parameter, ModelAndViewContainer mavContainer,
		NativeWebRequest request, WebDataBinderFactory binderFactory)
		throws Exception {

	String name = ModelFactory.getNameForParameter(parameter);
	Object attribute = (mavContainer.containsAttribute(name)) ?
			mavContainer.getModel().get(name) : createAttribute(name, parameter, binderFactory, request);

	WebDataBinder binder = binderFactory.createBinder(request, attribute, name);
	if (binder.getTarget() != null) {
		bindRequestParameters(binder, request);
		validateIfApplicable(binder, parameter);
		if (binder.getBindingResult().hasErrors()) {
			if (isBindExceptionRequired(binder, parameter)) {
				throw new BindException(binder.getBindingResult());
			}
		}
	}

	// Add resolved attribute and BindingResult at the end of the model

	Map<String, Object> bindingResultModel = binder.getBindingResult().getModel();
	mavContainer.removeAttributes(bindingResultModel);
	mavContainer.addAllAttributes(bindingResultModel);

	return binder.getTarget();
}
 

import org.springframework.web.bind.WebDataBinder; //导入方法依赖的package包/类
@InitBinder
public void initBinder(WebDataBinder binder) {
    binder.registerCustomEditor(String.class, new StringTrimmerEditor(true));

    Object target = binder.getTarget();
    if (target != null) {
        binder.replaceValidators(supportedValidatorsFor(target.getClass()));
    }
}
 

import org.springframework.web.bind.WebDataBinder; //导入方法依赖的package包/类
@Override
public Object resolveArgument(MethodParameter parameter, ModelAndViewContainer mavContainer,
		NativeWebRequest request, WebDataBinderFactory binderFactory) throws Exception {
	
	String name = ModelFactory.getNameForParameter(parameter);
	Object attribute = (mavContainer.containsAttribute(name)) ?
			mavContainer.getModel().get(name) : createAttribute(name, parameter, binderFactory, request);

	WebDataBinder binder = binderFactory.createBinder(request, attribute, name);
	if (binder.getTarget() != null) {
		//XXX: thinking 增加一个参数MethodParameter方便使用注解
		bindRequestParameters(binder, request,parameter);
		validateIfApplicable(binder, parameter);
		if (binder.getBindingResult().hasErrors()) {
			if (isBindExceptionRequired(binder, parameter)) {
				throw new BindException(binder.getBindingResult());
			}
		}
	}

	// Add resolved attribute and BindingResult at the end of the model

	Map<String, Object> bindingResultModel = binder.getBindingResult().getModel();
	mavContainer.removeAttributes(bindingResultModel);
	mavContainer.addAllAttributes(bindingResultModel);

	return binder.getTarget();
	
}
 

import org.springframework.web.bind.WebDataBinder; //导入方法依赖的package包/类
/**
 * Resolve the argument from the model or if not found instantiate it with
 * its default if it is available. The model attribute is then populated
 * with request values via data binding and optionally validated
 * if {@code @java.validation.Valid} is present on the argument.
 *
 * @throws org.springframework.validation.BindException
 *                   if data binding and validation result in an error
 *                   and the next method parameter is not of type {@link org.springframework.validation.Errors}.
 * @throws Exception if WebDataBinder initialization fails.
 */
public final Object resolveArgument(MethodParameter parameter,
                                    ModelAndViewContainer mavContainer,
                                    NativeWebRequest request,
                                    WebDataBinderFactory binderFactory) throws Exception {
    String name = parameter.getParameterAnnotation(FormModel.class).value();

    Object target = (mavContainer.containsAttribute(name)) ?
            mavContainer.getModel().get(name) : createAttribute(name, parameter, binderFactory, request);

    WebDataBinder binder = binderFactory.createBinder(request, target, name);
    target = binder.getTarget();
    if (target != null) {
        bindRequestParameters(mavContainer, binderFactory, binder, request, parameter);

        validateIfApplicable(binder, parameter);
        if (binder.getBindingResult().hasErrors()) {
            if (isBindExceptionRequired(binder, parameter)) {
                throw new BindException(binder.getBindingResult());
            }
        }
    }

    target = binder.convertIfNecessary(binder.getTarget(), parameter.getParameterType());
    mavContainer.addAttribute(name, target);

    return target;
}
 

import org.springframework.web.bind.WebDataBinder; //导入方法依赖的package包/类
/**
 * Resolve the argument from the model or if not found instantiate it with 
 * its default if it is available. The model attribute is then populated 
 * with request values via data binding and optionally validated
 * if {@code @java.validation.Valid} is present on the argument.
 * @throws BindException if data binding and validation result in an error
 * and the next method parameter is not of type {@link Errors}.
 * @throws Exception if WebDataBinder initialization fails.
 */
public final Object resolveArgument(MethodParameter parameter,
                                    ModelAndViewContainer mavContainer,
                                    NativeWebRequest request,
                                    WebDataBinderFactory binderFactory) throws Exception {
    String name = parameter.getParameterAnnotation(FormModel.class).value();
    
    Object target = (mavContainer.containsAttribute(name)) ?
            mavContainer.getModel().get(name) : createAttribute(name, parameter, binderFactory, request);
    
    WebDataBinder binder = binderFactory.createBinder(request, target, name);
    target = binder.getTarget();
    if (target != null) {
        bindRequestParameters(mavContainer, binderFactory, binder, request, parameter);
        
        validateIfApplicable(binder, parameter);
        if (binder.getBindingResult().hasErrors()) {
            if (isBindExceptionRequired(binder, parameter)) {
                throw new BindException(binder.getBindingResult());
            }
        }
    }
    
    target = binder.convertIfNecessary(binder.getTarget(), parameter.getParameterType());
    mavContainer.addAttribute(name, target);
    
    return target;
}
 

import org.springframework.web.bind.WebDataBinder; //导入方法依赖的package包/类
/**
 * Adds the {@link CollectionValidator} to the supplied {@link WebDataBinder}
 * 
 * @param binder web data binder.
 */
@InitBinder
public void initBinder(WebDataBinder binder) {
  Object target = binder.getTarget();
  if (target != null && collectionValidator.supports(target.getClass())) {
    binder.addValidators(collectionValidator);
  }
}