catfvld.java

sping下勇Xdoclet开发hibernate的程序实例,版本hibernate2.0,开发工具eclipse3.0

/*
 * Created on 2004-12-11
 *
 */
package org.ggyy.web.vld;

import org.ggyy.bo.Cat;
import org.ggyy.web.cmd.CatCmd;
import org.springframework.validation.Errors;
import org.springframework.validation.Validator;
/**
 * cat Command的spring的验证器，类似于struts的验证器
 *
 */
/**
 * @spring.bean id="catFVLD"
 */
public class CatFVLD implements Validator {

    public boolean supports(Class clazz) {

        return clazz == Cat.class;
    }

    public void validate(Object command, Errors errors) {
        Cat cat=(Cat) command;
        if(cat.getName()==null||cat.getName().equals("")){
            //required 是从messages.properties 文件取得，参考改文件的required定义
            errors.rejectValue("name","required",new String[]{"name"},"default_error_message: name required");
        }  
    }

}