20f201b18087001b168cf265728b6db8

jsf开发的简单博客

package com.tangjun.web.vo;

import java.util.Map;

import javax.faces.context.FacesContext;
import javax.faces.model.DataModel;
import javax.faces.model.ListDataModel;

import com.tangjun.model.exception.MyException;
import com.tangjun.web.bo.Blog;

public class BlogBean extends BlogBaseBean {

	private Blog blog = new Blog();

	private DataModel blogs = new ListDataModel();

	// 此方法是在页面获取users前从数据库中查询得到users
	// 此方法只有放到这里，Table中的链接才可以实现userBean中的方法
	public DataModel getBlogs() throws MyException {
		blogs.setWrappedData(this.getBlogService().browse());
		return blogs;
	}

	public void setBlogs(DataModel blogs) {
		this.blogs = blogs;
	}

	public Blog getBlog() {
		return blog;
	}

	public void setBlog(Blog blog) {
		this.blog = blog;
	}

	// 退出事件
	public String logoutAction() {
		this.setBlog(null);
		return "Logout";
	}

	// 显示数据到文本框
	public String editAction() {
		//FacesContext context=FacesContext.getCurrentInstance();
		//Map map=context.getExternalContext().getRequestParameterMap();
		//Integer id=Integer.valueOf(map.get("id").toString()) ;
		//从总消息里面获得数据
		//System.out.println("编号为:"+ .toString());
		//System.out.println(((Blog)blogs.getRowData()).getId());
		this.blog=(Blog)blogs.getRowData();
		return null;
	}

	// 保存数据到数据库
	public String saveAction()throws MyException{
		this.getBlogService().save(blog);
		//重新加载
		blogs.setWrappedData(this.getBlogService().browse());
		return null;
	}

	// 删除数据
	public String deleteAction()throws MyException{
		this.setBlog((Blog) blogs.getRowData());
		this.getBlogService().delete(blog.getId());
		return null;
	}
	
	/*
	//根据ID获得blog
	public Blog getEditBlog(Integer id)throws MyException
	{
		blogs.getWrappedData().
		return null;
	}
	*/
}