基于javaweb的JSP+Servlet个人博客系统(java+jsp+servlet+mysql)

运行环境

Java≥8、MySQL≥5.7、Tomcat≥8

开发工具

eclipse/idea/myeclipse/sts等均可配置运行

适用

课程设计，大作业，毕业设计，项目练习，学习演示等

功能说明

技术框架

JSP Servlet MySQL

基于javaweb的JSP+Servlet个人博客系统(java+jsp+servlet+mysql)

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		//取得客户端提交的文件信息
				Part part = request.getPart("file");
				//取得请求头信息
				String headerInfo = part.getHeader("content-disposition");
				//从头信息字符串中截取文件名称
				String fileName = headerInfo.substring(headerInfo.lastIndexOf("=")+2,headerInfo.length()-1);
				//得到服务器端存放上传图片的物理地址
				String fileSavingFolder = this.getServletContext().getRealPath("/upload");
				//得到服务器端图片的物理地址
				String fileSavingPath = fileSavingFolder+File.separator+fileName;
				//创建upload文件夹
				File f = new File(fileSavingFolder+File.separator);
				if(!f.exists()){
					f.mkdirs();
				}
				part.write(fileSavingPath);
				request.getRequestDispatcher("UserInfoServlet?fileName="+fileName).forward(request, response);
	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		doGet(request, response);
	}

}
package com.demo.web;



/**
 * Servlet implementation class UserServlet
 */
public class UserServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;
       
    /**

			articles = articleDao.searchCateArticle(user.getBlog().getBlogId(), categroyId);
		}
		session.removeAttribute("ARTICLES");
		if(articles!=null&&articles.size()>0){
			session.setAttribute("ARTICLES", articles);	
		}
		request.getRequestDispatcher("index.jsp").forward(request, response);
   }

}
package com.demo.web;




/**
 * Servlet implementation class BlogServlet
 */
@MultipartConfig
public class BlogServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;
	private BlogDao blogDao = new BlogDao();

	/**
	 * @see HttpServlet#HttpServlet()
	 */
	public BlogServlet() {
		super();
		// TODO Auto-generated constructor stub
	}

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse
	 *      response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		String method = request.getParameter("method");
		if ("query".equals(method)) {
			queryAllBlog(request, response);

	 * @throws ServletException
	 */
	public void visitorBlog(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException{
		String userId = request.getParameter("userid");
		int userid = 0;
		if(userId!=null){
			userid = Integer.parseInt(userId);
		}
		
		User user = userDao.getUser(userid);
		if(user!=null){
			HttpSession session = request.getSession();
			session.setAttribute("VISITOR", user);
		}
		
		request.getRequestDispatcher("UserArticleServlet?method=list").forward(request, response);
	}
}
package com.demo.web;




/**
 * Servlet implementation class CategroyServlet
 */
public class CategroyServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;
	private CategroyDao categroyDao = new CategroyDao();

	/**
	 * @see HttpServlet#HttpServlet()
	 */
	public CategroyServlet() {
		super();
		// TODO Auto-generated constructor stub
	}

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse
	 *      response)

//		PrintWriter out = null;
//		String[] s = {"hello","world"};
//		out.println(s[2]);
		out.println("你好，世界");
		out.flush();//清空缓存数据
		out.close();//关闭流
	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		doGet(request, response);
	}

	@Override
	public void init(ServletConfig config) throws ServletException {
		// TODO Auto-generated method stub
		super.init(config);
		String projectName = config.getInitParameter("projectName");
		System.out.println("正在访问"+projectName);
		ServletContext servletContext = config.getServletContext();
		String company = servletContext.getInitParameter("company");
		System.out.println(company);
	}
	
	

}
package com.demo.web;


/**
 * Servlet implementation class UploadUserServlet
 */
@MultipartConfig
public class UploadUserServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public UploadUserServlet() {
        super();

protected void addCategroy(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
	String categroyTitle = request.getParameter("categroyTitle");
	HttpSession session = request.getSession();
	User user = (User)session.getAttribute("USER");
	Categroy categroy = new Categroy(0, user.getBlog(), categroyTitle);
	int result = categroyDao.addCategroy(categroy);
	if (result > 0) {
		searchCategroy(request,response);
		response.sendRedirect("CategroyServlet?method=showPage&pageNo=1");
	} else {
		response.sendRedirect("categroy_add.jsp");
	}
}
/**
 * 调用分页方法
 * @param request
 * @param response
 * @throws IOException
 * @throws ServletException
 */
public void listUserPageCategroy(HttpServletRequest request, HttpServletResponse response)
		throws IOException, ServletException {
	String pno = request.getParameter("pageNo");
	int pageNo = 0;
	if(pno!=null){
		pageNo = Integer.parseInt(pno);
	}
	HttpSession session = request.getSession();
	User user = (User)session.getAttribute("USER");
	
	PageUtil page = null;
	if(user!=null){
		page = categroyDao.listPageCategroy(user.getBlog(), pageNo, 3);
		page.setPageNo(pageNo);
		request.setAttribute("page", page);
	}
	request.getRequestDispatcher("categroy_manager.jsp").forward(request, response);
  }

public void delCategroy(HttpServletRequest request, HttpServletResponse response)
		throws IOException, ServletException {
	String cid = request.getParameter("cid");
	int categroyId = 0;
	if(cid!=null){
		categroyId = Integer.parseInt(cid);
	}
	int result = categroyDao.delCategroy(categroyId);
	if(result>0){
		searchCategroy(request,response);
		request.getRequestDispatcher("CategroyServlet?method=showPage&pageNo=1").forward(request, response);	

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项目链接：
https://javayms.github.io?id=032221262204102ad
https://javayms.pages.dev?id=032221262204102ad