parametercontroller.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.validation.Errors;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.SimpleFormController;

import com.yhbbs.admin.web.sys.form.ParameterForm;
import com.yhbbs.bbs.biz.BbsPropBiz;
import com.yhbbs.bbs.itface.Parameter;
import com.yhbbs.utils.Constants;
/**
 * <p>Title:系统参数设置Controller</p>
 * <li>	系统参数设置
 * <br><b>WebSite: www.yyhweb.com</b>
 * <br><b>CopyRight: yyhweb[由由华网]</b>
 * @author stephen
 * @version YHBBS-2.0
 */
public class ParameterController extends  SimpleFormController{

	private String schPath = "";
	// 构造函数设置其属性
	public ParameterController(){
		this.setSessionForm(true);
		this.setValidateOnBinding(false);
		this.setCommandName("paraForm");
		this.setFormView("parameter");
	}
	// 初始化数据
	protected Map referenceData(HttpServletRequest request, Object obj, Errors error) throws Exception {
		Parameter para = BbsPropBiz.getParameter();
		if(para!=null){
			String searchPath = para.getSearchPath();
			if(searchPath==null || searchPath.length()<2 || searchPath.equals(Constants.searchpath)){
				Map<String, String> model = new HashMap<String, String>();
				schPath = request.getRealPath("/").replace("\\", "/")+Constants.searchpath;
				String info = "当前路径是系统默认路径，为了保证正常搜索请将搜索路径改为系统实际路径：";
				model.put("realpath", info+schPath);
				return model;
			}
		}
		return null;
		
	}
	// 取得表单
	protected Object formBackingObject(HttpServletRequest request) throws Exception {
		Parameter para = BbsPropBiz.getParameter();
		if(para!=null){
			return new ParameterForm(para);
		}else
			return new ParameterForm();
	}
	//	数据邦定和表单验证
	protected void onBindAndValidate(HttpServletRequest request,Object command,BindException errors){
		ParameterForm paraForm = (ParameterForm)command;
		Parameter parameter = paraForm.getParameter();
		String searchPath = parameter.getSearchPath();
		if(searchPath==null || searchPath.length()<2 || searchPath.equals(Constants.searchpath)){
			parameter.setSearchPath(schPath);
		}
		// 不允许用户修改帖子，将时间设为0
		if(parameter.getArtEdit()==0)
			parameter.setArtHour(0);
		
	}
	// 表单提交
	protected ModelAndView onSubmit(HttpServletRequest request, HttpServletResponse response, Object command,BindException errors){
		Map<String, String> model = new HashMap<String, String>();
		ParameterForm paraForm = (ParameterForm)command;
		Parameter parameter = paraForm.getParameter();
		boolean flag = BbsPropBiz.updateParameter(parameter);
		
		if(flag){
			model.put("okinfo", "更新系统参数");
			model.put("forward", "<a href='../admin/Parameter.do'>系统参数设置</a>");
			return new ModelAndView("success",model);
		}else{
			model.put("errinfo", "更新系统参数");
			model.put("forward", "<a href='#' onclick='javascript:history.go(-1)'>返回</a>");
			return new ModelAndView("failure",model);
		}
	}
}