propertycontroller.java

一个不错的bbs论坛系统．对初学者很有帮助

package com.yhbbs.admin.web.sys;

import java.util.HashMap;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.validation.BindException;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.SimpleFormController;

import com.yhbbs.admin.web.sys.form.PropertyForm;
import com.yhbbs.bbs.biz.BbsPropBiz;
import com.yhbbs.bbs.itface.BbsProp;
/**
 * <p>Title:系统属性设置Controller</p>
 * <li>	系统属性设置
 * <br><b>WebSite: www.yyhweb.com</b>
 * <br><b>CopyRight: yyhweb[由由华网]</b>
 * @author stephen
 * @version YHBBS-2.0
 */
public class PropertyController extends  SimpleFormController{

	// 构造函数设置其属性
	public PropertyController(){
		this.setSessionForm(true);
		this.setValidateOnBinding(false);
		this.setCommandName("propForm");
		this.setFormView("property");
	}

	// 取得表单
	protected Object formBackingObject(HttpServletRequest request) throws Exception {
		BbsProp property = BbsPropBiz.getBbsProp();
		if(property!=null){
			return new PropertyForm(property);
		}else
			return new PropertyForm();
	}
	//	数据邦定和表单验证
	protected void onBindAndValidate(HttpServletRequest request,Object command,BindException errors){
		PropertyForm propForm = (PropertyForm)command;
		BbsProp property = propForm.getProperty();
		String bbswidth = property.getBbswidth().trim();
		errors.setNestedPath("");
		if(bbswidth.indexOf('%')!=-1){
			if(bbswidth.indexOf('%')!=bbswidth.length()-1){
			 errors.reject("bbswidth_error", "你输入的页面宽度的数值有错误");
			 return;
			}
		}
		char ch;
		for(int i=0;i<bbswidth.getBytes().length;i++){
			ch = bbswidth.charAt(i);
			if(ch=='%' || (ch>='0' && ch<='9')){
				continue;
			}else{
				errors.reject("bbswidth_error", "请输入正确的表示页面宽度的数值");
				break;
			}
		}
		
	}
	// 表单提交
	protected ModelAndView onSubmit(HttpServletRequest request, HttpServletResponse response, Object command,BindException errors){
		Map<String, String> model = new HashMap<String, String>();
		PropertyForm propForm = (PropertyForm)command;
		BbsProp property = propForm.getProperty();
		boolean flag = BbsPropBiz.updateProperty(property);
		
		if(flag){
			model.put("okinfo", "更新系统属性");
			model.put("forward", "<a href='../admin/Property.do'>系统属性设置</a>");
			return new ModelAndView("success",model);
		}else{
			model.put("errinfo", "更新系统属性");
			model.put("forward", "<a href='#' onclick='javascript:history.go(-1)'>返回</a>");
			return new ModelAndView("failure",model);
		}
	}
}