package com.skyline.common.validation;
import java.io.IOException;
import java.io.InputStream;
import java.util.Locale;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.commons.validator.Form;
import org.apache.commons.validator.Validator;
import org.apache.commons.validator.ValidatorResources;
import org.springframework.beans.FatalBeanException;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.core.io.Resource;
import org.springframework.util.StringUtils;
import org.xml.sax.SAXException;
/**
* 验证框架相关配置，用于获取相关验证框架
*
* @author wuqh
* */
public class ValidationFactory implements InitializingBean {
private static final Log LOGGER = LogFactory.getLog(ValidationFactory.class);
private ValidatorResources validatorResources;
private static final String ERRORS_KEY = "com.skyline.common.validation.Errors";
@Override
public void afterPropertiesSet() throws Exception {
if (this.validatorResources == null) {
throw new FatalBeanException(
"Unable to locate validation configuration. Property [validationLocations] is required.");
}
}
public void setValidationConfigLocations(Resource[] validationConfigLocations) {
LOGGER.info("Loading validation configurations from ["
+ StringUtils.arrayToCommaDelimitedString(validationConfigLocations) + "]");
try {
InputStream[] inputStreams = new InputStream[validationConfigLocations.length];
for (int i = 0; i < inputStreams.length; i++) {
inputStreams[i] = validationConfigLocations[i].getInputStream();
}
this.validatorResources = new ValidatorResources(inputStreams);
} catch (IOException e) {
throw new FatalBeanException("Unable to read validation configuration due to IOException.", e);
} catch (SAXException e) {
throw new FatalBeanException("Unable to parse validation configuration XML", e);
}
}
public Validator getValidator(String beanName, Object bean, Errors errors) {
Validator validator = new Validator(validatorResources, beanName);
validator.setParameter(ERRORS_KEY, errors);
validator.setParameter(Validator.BEAN_PARAM, bean);
return validator;
}
public boolean hasRulesForBean(String beanName) {
return hasRulesForBean(beanName, Locale.getDefault());
}
public boolean hasRulesForBean(String beanName, Locale locale) {
Form form = validatorResources.getForm(locale, beanName);
return (form != null);
}
public ValidatorResources getValidatorResources() {
return validatorResources;
}
}