毕设课设项目-java党员管理系统jsp+servlet入党信息管理系统.zip

jsp+servlet入党信息管理系统 程序有问题，找[程序帮](http://ll032.cn/HZ6vHa)：QQ1022287044 项目介绍 ---- > 入党信息管理系统采用jsp+servlet搭建，mysql做数据支持，jsp做前端数据渲染，实现不用角色不同的条件查询，展示对应的页面和数据。本系统应用于院校的入党信息管理，目前实现了个人管理、系统管理、支部信息管理、入党积极分子信息、预备党员信息、正式党员信息、党费信息、公告管理、文件管理等功能，有时间在做进一步的完善。 项目适用人群 ---- 正在做毕设的学生，或者需要项目实战练习的Java学习者 开发环境： ----- 1. jdk 8 2. intellij idea 3. tomcat 8.5.40 4. mysql 5.7 所用技术： ----- 1. jsp+servlet 2. js+ajax 3. layUi 4. jdbc直连 项目访问地址 --- ``` http://localhost:8090 ``` 项目结构 -----  项目截图 ---- - 注册  - 系统管理  - 新增/修改用户  - 正式党员信息  - 公告管理  - 文件管理  关键代码: ----- 1.初始化工作 ```diff //数据库连接初始化 public Connection getConnection() { Connection conn = null; String sDBDriver = "com.mysql.jdbc.Driver"; String url = "jdbc:mysql://localhost:3306/schooldb?useUnicode=true&characterEncoding=utf8"; try { //加载数据库驱动 Class.forName(sDBDriver); //获取数据库链接 -账号-密码 conn = DriverManager.getConnection(url, "root", "root123"); return conn; } catch (Exception e) { e.printStackTrace(); System.err.println("数据库驱动注册错误信息： " + e.getMessage()); } return conn; } ``` 2.党费信息Servlet ```diff protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { try { String mtype = request.getParameter("mtype"); String url = ""; DangfeiDao dangfeiDao = new DangfeiDao(); /** * 添加党费信息 */ if ("add".equals(mtype)) { TDangfei dangfei = new TDangfei(); dangfei.setTypeid(request.getParameter("typeid")); dangfei.setClassname(request.getParameter("classname")); dangfei.setDangfei(request.getParameter("dangfei")); dangfei.setDangtype(request.getParameter("dangtype")); dangfei.setShouyear(request.getParameter("shouyear")); dangfei.setTypename(request.getParameter("typename")); dangfei.setUsername(request.getParameter("username")); dangfeiDao.addDangfei(dangfei); url = "/DangfeiServlet?mtype=query&flag=success"; /** * 初始化修改党费信息界面 */ } else if ("preupdate".equals(mtype)) { request.setAttribute("dangfei", dangfeiDao.getDangfei(request.getParameter("id"))); url = "/files/dangfei/update.jsp"; /** * 修改党费信息 */ } else if ("update".equals(mtype)) { TDangfei dangfei = new TDangfei(); dangfei.setId(Integer.parseInt(request.getParameter("id"))); dangfei.setTypeid(request.getParameter("typeid")); dangfei.setClassname(request.getParameter("classname")); dangfei.setDangfei(request.getParameter("dangfei")); dangfei.setDangtype(request.getParameter("dangtype")); dangfei.setShouyear(request.getParameter("shouyear")); dangfei.setTypename(request.getParameter("typename")); dangfei.setUsername(request.getParameter("username")); dangfeiDao.updateDangfei(dangfei); url = "/DangfeiServlet?mtype=query"; /** * 遍历党费信息 */ } else if ("query".equals(mtype)) { if (request.getSession().getAttribute("querypageunit") == null) { request.getSession().setAttribute("querypageunit", this.pageunit); } int curpage = this.getCurrentpage(request); int pageunit = this.getPageunit(request, "querypageunit"); String urlpage = "DangfeiServlet?mtype=query"; StringBuffer cond = new StringBuffer(); if (null != request.getParameter("searchname") && "" != request.getParameter("searchname").trim()) { cond.append(" and a.typename like '%" + request.getParameter("searchname").trim() + "%' "); } if (null != request.getSession().getAttribute("usertype") && !"0".equals(((String) request.getSession().getAttribute("usertype")))) { cond.append(" and a.typeid like '%" + (String) request.getSession().getAttribute("typeid") + "%' "); } PageInfo pageInfo = dangfeiDao.queryTDangfei(curpage, pageunit, request, urlpage, cond.toString()); request.setAttribute("pageinfo", pageInfo); request.setAttribute("searchname", request.getParameter("searchname")); url = "/files/dangfei/list.jsp"; /** * 删除党费信息 */ } else if ("delete".equals(mtype)) { dangfeiDao.delDangfei(request.getParameter("id")); url = "/DangfeiServlet?mtype=query"; } //重定向到目标地址 RequestDispatcher dispatcher = request.getRequestDispatcher(url); dispatcher.forward(request, response); } catch (Exception e) { e.printStackTrace(); } } ``` 3.文件下载 ``` public void doGet(HttpServletRequest request, HttpServletResponse response)throws IOException { //获得请求文件名 request.setCharacterEncoding("ISO-8859-1"); String filename = request.getParameter("filename"); filename = new String(filename.getBytes("ISO-8859-1"), "UTF-8"); //设置文件MIME类型 response.setContentType(getServletContext().getMimeType(filename)); //设置Content-Disposition response.setHeader("Content-Disposition", "attachment;filename=" + new String(filename.getBytes("GBK"), "ISO-8859-1")); //读取目标文件，通过response将目标文件写到客户端 //获取目标文件的绝对路径 String fullFileName = getServletContext().getRealPath("/upload/" + filename); //读取文件 InputStream in = new FileInputStream(fullFileName); OutputStream out = response.getOutputStream(); //写文件 int b; while ((b = in.read()) != -1) { out.write(b); } in.close(); out.close(); } ``` 项目后续 ---- 其他ssh，ssm，springboot版本后续迭代更新，持续关注