java图书馆管理系统结果分析

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mob64ca140b466e 2024-09-10 11:21:57

文章标签 java图书馆管理系统结果分析 mysql java servlet json 文章分类 Java 后端开发

基于javaweb+mysql的jsp+servlet图书图书馆管理系统(java+jsp+layui+bootstrap+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

基于javaweb+mysql的JSP+Servlet图书图书馆管理系统(java+jsp+layui+bootstrap+servlet+mysql)

项目介绍

使用jsp+servlet、layui、mysql完成的图书馆系统，包含用户图书借阅、图书管理员、系统管理员界面，功能齐全。

开发工具为eclipse/IDEA，环境java8，tomcat9.0+，mysql为5.7（mysql8也行）

项目详细介绍

本图书管理系统总体上分为前台页面显示和后台管理。

前台页面（即本书图书管理系统的首页）实现了公告的显示，图书查询，留言建议三大主要功能，有读者规则查看功能，师生们可以看到图书管理人员发布的最新公告信息，并可以查询自己感兴趣的图书，查看留言提议，用户登录后还有个人资料修改、个人借阅信息查询、个人违章信息查询等功能，也可以给学校的图书管理人员留言提议。

后台的页面则集成了图书管理中所需的功能，分成图书管理人员和系统管理人员，平时管理人员的工作都是在后台中完成的。前台是为了师生显示的。相对应的后台是针对学校图书管理人员，后台的页面都加密，如果不正常登录是进入不了后台管理页面的，后台图书管理人员功能包括：借阅图书、归还图书、借书记录显示与查找、还书记录显示与查找、公告增删改查；后台系统管理员功能包括：对书籍的增删改查、对书籍分类的增删改、对借阅证的增删改查、对借阅信息的显示与查找、对借阅规则的增删改、对图书管理员的增删改、对近期借阅书籍数量的折线图显示，以及对这些表格数据进行Excel表格的输出

共包含三个大模块：用户、图书管理员、系统管理员

一、用户模块

查看公告：能看到图书管理员发布的公告信息。 2. 图书查看：分页显示，能看到图书总览，能通过图书编号、图书名称、作者、存放位置、图书描述进行模糊查询 3. 个人违章信息（登录后）：个人历史违章信息与查询 4. 图书馆读者留言（登录后）：对图书馆的建议，或对书籍的评价 5. 查看借阅规则：不同的规则有不同的借阅限定数量、限定时间、超期费用 6. 个人信息（登录后）：对个人信息的查看与登录密码的修改 7. 个人借阅信息（登录后）：对个人借阅记录的分页查看与查询

二、图书管理员模块

借还图书：帮助用户借阅图书，并判断符不符合借阅规则、返还图书时判断有没有超期，超期则输出超期费用再归还 2. 借阅报表：分页显示所有借阅记录、能进行查询和输出结果到excel公告管理：能添加编辑和删除公告 3. 还书报表：分页显示所有未还的书籍，能通过借阅证号、图书编号、借阅日期、截止日期等条件进行模糊查询 4. 个人信息修改：修改个人信息、密码等

三、系统管理员模块

书籍管理：分页，新添图书，设置图书各种信息，编辑删除，通过编号、书名、作者、描述等进行搜索，输出结果到excel，并且能查看该书籍被谁借阅过。 2. 分类管理：分页显示，增删改书籍分类，书籍分类方便查阅整理 3. 借阅证管理：分页显示所有借阅证，增删改查用户借阅证，查看该借阅证所有的借阅记录 4. 借阅规则管理：能显示、编辑、删除所有借阅规则，借阅规则将决定该图书证能借阅什么图书馆的图书，能借多少本，能借多久以及超期每天的费用。 5. 借阅信息查询：分页显示，能条件查询超期没还的，根据编号、借阅证号、书籍编号、借阅日期等进行模糊查询，输出结果到excel等，系统管理员只能查询，不能增删改借阅信息，这个操作由图书管理员操作。 6. 图书管理员管理：对图书管理员进行增删改操作，但是不能修改原来的账号 7. 图书借阅统计：通过折线图将图书馆近30天的每天借阅书籍数量直观的显示出来。

sql表

共有十张数据库表，书籍表、借书记录表、留言表、系统管理员表、借阅证表、图书管理管理员表书籍分类表、图书馆表、借阅规则表、公告表 - 书籍表 - 编号、姓名、作者、存放的图书馆、分类编号、存放位置、是否借出、书籍描述 - 借书记录表 - 编号、借阅证编号、书籍编号、借书日期、限制日期、归还日期、违规描述、处理人编号 - 留言表 - 编号、借阅证编号、留言内容、留言日期 - 系统管理员表 - 账号、密码 - 借阅证表 - 编号、密码、借阅者姓名、规则编号、状态（丢失、可用） - 图书管理员表 - 编号、姓名、账号、密码、邮箱 - 书籍分类表 - 编号、分类名、分类描述 - 图书馆表 - 编号、图书馆名、描述 - 规则表 - 编号、限制借阅数量、限制借阅天数、图书超期每天费用 - 公告表 - 编号、标题、公告内容、发布日期

环境需要

1.运行环境：最好是java jdk 1.8，我们在这个平台上运行的。其他版本理论上也可以。 2.IDE环境：IDEA，Eclipse,Myeclipse都可以。推荐IDEA; 3.tomcat环境：Tomcat 9.x版本，注：tomcat9.0以下会有问题； 4.硬件环境：windows 7/8/10 1G内存以上；或者 Mac OS； 5.是否Maven项目: 否；查看源码目录中是否包含pom.xml；若包含，则为maven项目，否则为非maven项目 6.数据库：MySql 5.7版本，（mysql8也行）

技术栈

后端：JSP+Servlet 2. 前端：jsp+layui+bootstrap+jQuery

使用说明

使用Navicat或者其它工具，在mysql中创建对应名称的数据库，并导入项目的sql文件； 2. 使用IDEA/Eclipse/MyEclipse导入项目，Eclipse/MyEclipse导入时，若为maven项目请选择maven;若为maven项目，导入成功后请执行maven clean;maven install命令，配置tomcat，然后运行； 3. 将项目中src/javabean/Base.java和JDBCBean.java配置文件中的数据库配置改为自己的配置; 4. 运行项目，输入localhost:8080/xxx 登录 5. 用户账号密码：1805010219 1234 图书管理员账号密码：root 1234 系统管理员账号密码：admin admin

String countSql = "";
		// 准备返回参数
		int code = 1;
		String msg = "无数据";
		int count = 0;

		JSONObject jsonData = new JSONObject();
		JSONArray jsonArray = new JSONArray();
		JSONObject jsonResult = new JSONObject();
		// 进行查询
		try {
			connection = (Connection) Base.getConnection();
			sql = "select * from borrow_books where manager_id is not null";
			if (condition != null && conditionValue != null && !condition.equals("") && !conditionValue.equals("")) {
				where = " and " + condition + " like '%" + conditionValue + "%' ";
				sql += where;
			}
			sql += " limit ?,?";// 1 10 (1-1)*10
			System.out.println("???" + sql);
			pstmt = connection.prepareStatement(sql);
			pstmt.setInt(1, (Integer.parseInt(page) - 1) * Integer.parseInt(limit));
			pstmt.setInt(2, Integer.parseInt(limit));
			resultSet = pstmt.executeQuery();
			while (resultSet.next()) {
				jsonData.put("id", resultSet.getString("id"));
				jsonData.put("card_id", resultSet.getString("card_id"));
				jsonData.put("book_id", resultSet.getString("book_id"));
				jsonData.put("borrow_date", resultSet.getString("borrow_date"));
				jsonData.put("end_date", resultSet.getString("end_date"));
				jsonData.put("return_date", resultSet.getString("return_date"));
				jsonData.put("illegal", resultSet.getString("illegal"));
				jsonData.put("manager_id", resultSet.getString("manager_id"));
				jsonArray.add(jsonData);
			}
			countSql = "select count(*) as count from borrow_books where manager_id is not null";
			countSql += where;
			countPstmt = connection.prepareStatement(countSql);
			countSet = countPstmt.executeQuery();
			if (countSet.next()) {
				count = countSet.getInt("count");
			}
			if (!jsonArray.isEmpty()) {
				code = 0;
				msg = "查询成功";
			}

Base.closeResource(connection, countPstmt, countSet);
			} catch (SQLException e) {
				msg = "关闭资源失败";
			}

		}
		// 返回数据
		jsonResult.put("code", code);
		jsonResult.put("count", count);
		jsonResult.put("msg", msg);
		jsonResult.put("data", jsonArray.toArray());
		PrintWriter out = resp.getWriter();
		out.print(jsonResult.toString());
	}

}

@WebServlet("/manager1/borrowTable")
public class BorrowTable extends HttpServlet {
	@Override
	protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
		resp.setContentType("application/json; charset=utf8");
		// 接收参数
		String limit = req.getParameter("limit");
		String page = req.getParameter("page");
		String condition = (String) req.getParameter("condition");

}else {
			where.put("condition", condition);
			where.put("conditionValue", conditionValue);
		}
		Admin admin = new Admin();
		try {
			map = admin.getBookList(page, limit, where);
			result = (String) map.get("data");
		} catch (ClassNotFoundException | SQLException e) {
			msg =  "数据库获取信息失败";
		}
		
		if(result == null || result.isEmpty() || result.equals("1")) {
			json.put("code", 1);
			json.put("msg", "数据为空");
		} else {
			json.put("code", 0);
			json.put("msg", "success");
			json.put("count", map.get("count"));
			result = "[" +result +"]";
			json.put("data", result);
		}
		
		PrintWriter out = resp.getWriter();
		out.print(json.toString());
	}
	
    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
    	doGet(req, resp);
    }
}

msg = "关闭失败";
			}
		}
		
		PrintWriter out = resp.getWriter();
		out.print(Util.jsonResponse(code, msg, null));
		
		
		
	}

}

@WebServlet("/admin/bookEdit")
public class BookEdit extends HttpServlet {
	@Override
	protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
		resp.setContentType("application/json; charset=utf8");
		String id = req.getParameter("id");
		String name = req.getParameter("name");
		String author = req.getParameter("author");
		String library_id = req.getParameter("library_id");
		String sort_id = req.getParameter("sort_id");
		String position = req.getParameter("position");
		String status = req.getParameter("status");
		String description = req.getParameter("description");
		System.out.println(description+"-------------");
		JSONObject json = new JSONObject();
		//if(id == null || id.equals(""))
		Connection connection = null;
		PreparedStatement pstmt = null;
		//ResultSet resultSet = null;
		int result = 0;

resultSet = pstmt.executeQuery();
			while (resultSet.next()) {
				jsonData.put("id", resultSet.getString("id"));
				jsonData.put("card_id", resultSet.getString("card_id"));
				jsonData.put("book_id", resultSet.getString("book_id"));
				jsonData.put("borrow_date", resultSet.getString("borrow_date"));
				jsonData.put("end_date", resultSet.getString("end_date"));

				jsonArray.add(jsonData);
			}
			countSql = "select count(*) as count from borrow_books where manager_id is null";
			countSql += where;
			countPstmt = connection.prepareStatement(countSql);
			countSet = countPstmt.executeQuery();
			if (countSet.next()) {
				count = countSet.getInt("count");
			}
			if (!jsonArray.isEmpty()) {
				code = 0;
				msg = "查询成功";
			}

		} catch (ClassNotFoundException e) {
			msg = "class没找到";
		} catch (SQLException e) {
			msg = "sql错误";
		} finally {
			try {
				Base.closeResource(null, pstmt, resultSet);
				Base.closeResource(connection, countPstmt, countSet);
			} catch (SQLException e) {
				msg = "关闭资源失败";
			}

		}
		// 返回数据
		jsonResult.put("code", code);
		jsonResult.put("count", count);
		jsonResult.put("msg", msg);
		jsonResult.put("data", jsonArray.toArray());
		PrintWriter out = resp.getWriter();

ResultSet countSet = null;
		String sql = "";
		String countSql = "";
		// 准备返回参数
		int code = 1;
		String msg = "无数据";
		int count = 0;
		HttpSession session = req.getSession();

		JSONObject jsonData = new JSONObject();
		JSONArray jsonArray = new JSONArray();
		JSONObject jsonResult = new JSONObject();
		// 进行查询
		try {
			connection = (Connection) Base.getConnection();
			sql = "select * from borrow_books where ILLEGAL is not null and length(trim(illegal))>0 AND CARD_ID = "
					+ session.getAttribute("reader");
			if (condition != null && conditionValue != null && !condition.equals("") && !conditionValue.equals("")) {
				where = " and " + condition + " like '%" + conditionValue + "%' ";
				sql += where;
			}
			sql += " limit ?,?";// 1 10 (1-1)*10
			System.out.println("???" + sql);
			pstmt = connection.prepareStatement(sql);
			pstmt.setInt(1, (Integer.parseInt(page) - 1) * Integer.parseInt(limit));
			pstmt.setInt(2, Integer.parseInt(limit));
			resultSet = pstmt.executeQuery();
			while (resultSet.next()) {
				jsonData.put("id", resultSet.getString("id"));
				jsonData.put("card_id", resultSet.getString("card_id"));
				jsonData.put("book_id", resultSet.getString("book_id"));
				jsonData.put("borrow_date", resultSet.getString("borrow_date"));
				jsonData.put("end_date", resultSet.getString("end_date"));
				jsonData.put("return_date", resultSet.getString("return_date"));
				jsonData.put("illegal", resultSet.getString("illegal"));
				jsonData.put("manager_id", resultSet.getString("manager_id"));
				jsonArray.add(jsonData);
			}
			countSql = "select count(*) as count from borrow_books where ILLEGAL is not null and length(trim(illegal))>0 AND CARD_ID = "
					+ session.getAttribute("reader");
			countSql += where;
			countPstmt = connection.prepareStatement(countSql);
			countSet = countPstmt.executeQuery();
			if (countSet.next()) {
				count = countSet.getInt("count");
			}
			if (!jsonArray.isEmpty()) {
				code = 0;
				msg = "查询成功";
			}

		} catch (ClassNotFoundException e) {

// 删除借书记录
				delHistorySql = "delete from borrow_books where card_id=?";
				delHistoryPstmt = connection.prepareStatement(delHistorySql);
				delHistoryPstmt.setString(1, id);
				delHistoryResult = delHistoryPstmt.executeUpdate();
				// 返回删除记录条数
				jsonData.put("num", delHistoryResult);
				// 删除阅读证
				delCardSql = "delete from borrow_card where id=? limit 1";
				delCardPstmt = connection.prepareStatement(delCardSql);
				delCardPstmt.setString(1, id);
				delCardResult = delCardPstmt.executeUpdate();
				
			} catch (ClassNotFoundException e) {
				msg = "连接失败";
			} catch (SQLException e) {
				msg = "sql错误";
			} finally {
				try {
					delCardPstmt.close();
					Base.closeResource(connection, delCardPstmt, null);
				} catch (SQLException e) {
					msg = "关闭失败";
				}
			}
		}
		PrintWriter out = resp.getWriter();
		if(delCardResult == 1) {
			code = "0";
			msg = "删除借阅证成功";
		}
		jsonObject.put("code", code);
		jsonObject.put("msg", msg);
		jsonObject.put("data", jsonData);
		out.print(jsonObject.toString());
	}

}

int num = 0;
		try {
			Map<String, String> libraryMap = Common.getLibraryMap();
			for(String key : libraryMap.keySet()) {
				if(req.getParameter("borrow_library[" +key +"]") != null) {
					if(num == 0) {
						borrow_library += key;
						num++;
					}else {
						borrow_library += "、"+key;
					}
				}
			}
			if(borrow_library.isEmpty()) {
				msg = "允许图书馆不能为空";
			}
		} catch (SQLException e) {
			msg = "获取图书馆失败";
		}
		String borrow_num = req.getParameter("borrow_num");
		String limit_day = req.getParameter("limit_day");
		String overtime_fee = req.getParameter("overtime_fee");
		String id = req.getParameter("id");
		try {
			connection = (Connection) Base.getConnection();
			sql = "update rules set borrow_num=?, limit_day=?, borrow_library=?,overtime_fee=? where id=?";
			pstmt = connection.prepareStatement(sql);
			pstmt.setString(1, borrow_num);
			pstmt.setString(2, limit_day);
			pstmt.setString(3, borrow_library);
			pstmt.setString(4, overtime_fee);
			pstmt.setString(5, id);
			result = pstmt.executeUpdate();
			if(result == 1) {
				code = 0;
				msg = "success";
			}
		} catch (ClassNotFoundException e) {
			msg = "classnotfound";
		} catch (SQLException e) {
			msg = "SQL错误";
		} finally {
			try {
				Base.closeResource(connection, pstmt, null);
			} catch (SQLException e) {
				msg = "关闭失败";
			}
		}
		
		PrintWriter out = resp.getWriter();
		out.print(Util.jsonResponse(code, msg, null));

@WebServlet("/admin/managerEdit")
public class ManagerEdit extends HttpServlet {
	@Override
	protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
		resp.setContentType("application/json; charset=utf8");
		// 接收参数
		String id = req.getParameter("id");
		String name = req.getParameter("name");
		String password = req.getParameter("password");
		String email = req.getParameter("email");
		// 准备参数
		String sql = "";
		Connection  connection = null;
		PreparedStatement pstmt = null;
		ResultSet resultSet = null;
		int result = 0;
		// 返回参数
		int code = 1;
		String msg = "";
		PrintWriter out = resp.getWriter();
		JSONArray jsonArray = new JSONArray();
		JSONObject jsonObject  = new JSONObject();
		// 进行查询
		if(name==null || name.equals("")|| password==null || password.equals("") || email==null || email.equals("")) {
			msg = "参数不能为空";
			out.print(Util.jsonResponse(code, msg, null));
		}else {
			try {
				connection = (Connection) Base.getConnection();
				// 添加管理员
				sql = "update manager set name=?, password=?, email=? where id=?";
				pstmt = connection.prepareStatement(sql);
				pstmt.setString(1, name);
				pstmt.setString(2, password);
				pstmt.setString(3, email);
				pstmt.setString(4, id);
				result = pstmt.executeUpdate();

jsonData.put("card_id", resultSet.getString("card_id"));
				jsonData.put("book_id", resultSet.getString("book_id"));
				jsonData.put("borrow_date", resultSet.getString("borrow_date"));
				jsonData.put("end_date", resultSet.getString("end_date"));
				jsonData.put("return_date", resultSet.getString("return_date"));
				jsonArray.add(jsonData);
			}
			countSql = "select count(*) as count from borrow_books where card_id = "
					+ req.getSession().getAttribute("reader");
			countSql += where;
			countPstmt = connection.prepareStatement(countSql);
			countSet = countPstmt.executeQuery();
			if (countSet.next()) {
				count = countSet.getInt("count");
			}
			if (!jsonArray.isEmpty()) {
				code = 0;
				msg = "查询成功";
			}

		} catch (ClassNotFoundException e) {
			msg = "class没找到";
		} catch (SQLException e) {
			msg = "sql错误";
		} finally {
			try {
				Base.closeResource(null, pstmt, resultSet);
				Base.closeResource(connection, countPstmt, countSet);
			} catch (SQLException e) {
				msg = "关闭资源失败";
			}

		}
		// 返回数据
		jsonResult.put("code", code);
		jsonResult.put("count", count);
		jsonResult.put("msg", msg);
		jsonResult.put("data", jsonArray.toArray());
		PrintWriter out = resp.getWriter();
		out.print(jsonResult.toString());
	}

}

public class ManagerEdit extends HttpServlet {
	@Override
	protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
		resp.setContentType("application/json; charset=utf8");
		// 接收参数
		String id = req.getParameter("id");
		String name = req.getParameter("name");
		String password = req.getParameter("password");
		String email = req.getParameter("email");
		// 准备参数
		String sql = "";
		Connection  connection = null;
		PreparedStatement pstmt = null;
		ResultSet resultSet = null;
		int result = 0;
		// 返回参数
		int code = 1;
		String msg = "";
		PrintWriter out = resp.getWriter();
		JSONArray jsonArray = new JSONArray();
		JSONObject jsonObject  = new JSONObject();
		// 进行查询
		if(name==null || name.equals("")|| password==null || password.equals("") || email==null || email.equals("")) {
			msg = "参数不能为空";
			out.print(Util.jsonResponse(code, msg, null));
		}else {
			try {
				connection = (Connection) Base.getConnection();
				// 添加管理员
				sql = "update manager set name=?, password=?, email=? where id=?";
				pstmt = connection.prepareStatement(sql);
				pstmt.setString(1, name);
				pstmt.setString(2, password);
				pstmt.setString(3, email);
				pstmt.setString(4, id);
				result = pstmt.executeUpdate();
				
				// 返回数据
				if(result == 1 ){
					code = 0;
					msg = "修改成功";
				}else {
					msg = "修改失败";
				}

json.put("count", map.get("count"));
			result = "[" +result +"]";
			json.put("data", result);
		}
		
		PrintWriter out = resp.getWriter();
		out.print(json.toString());
	}
	
    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
    	doGet(req, resp);
    }
}               

@WebServlet("/admin/cardEdit")
public class CardEdit extends HttpServlet {
	@Override
	protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
		resp.setContentType("application/json; charset=utf8");
		// 接受数据
		String id = req.getParameter("id");
		String password = req.getParameter("password");
		String reader = req.getParameter("reader");
		String rule_id = req.getParameter("rule_id");

}

}

/**
 * Servlet implementation class ReturnTable
 */
@WebServlet("/manager1/returnTable")
public class ReturnTable extends HttpServlet {
	@Override
	protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
		resp.setContentType("application/json; charset=utf8");
		// 接收参数
		String limit = req.getParameter("limit");
		String page = req.getParameter("page");
		String condition = (String) req.getParameter("condition");
		String conditionValue = (String) req.getParameter("conditionValue");
		String where = ""; // 无限制条件
		if (page == null) {
			page = "1";
		}
		if (limit == null) {
			limit = "10";
		}
		// 准备查询
		Connection connection = null;
		PreparedStatement pstmt = null;
		PreparedStatement countPstmt = null;
		ResultSet resultSet = null;
		ResultSet countSet = null;
		String sql = "";
		String countSql = "";
		// 准备返回参数

/**
 * Servlet implementation class CardAdd
 */
@WebServlet("/admin/cardAdd")
public class CardAdd extends HttpServlet {
	@Override
	protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
		resp.setContentType("application/json; charset=utf8");
		// 获取参数
		String reader = req.getParameter("reader");
		String password = req.getParameter("password");
		String rule_id = req.getParameter("rule_id");
		String status = req.getParameter("status");
		// 准备资源
		String code = "1";
		String msg = "error";
		String data = "";
		JSONObject json = new JSONObject();
		JSONObject jsonData = new JSONObject();
		Connection connection = null;
		Connection connection1 = null;
		PreparedStatement pstmt = null;
		PreparedStatement pstmt1 = null;
		String sql = null;
		int result = 0;
		ResultSet dataSet = null;
		// 参数不能为空
		if(reader == null || password == null || rule_id == null || rule_id == null || status == null) {
			code = "1";
			msg = "值不能为空";
		}else {
			try {
				connection = (Connection) Base.getConnection();
				sql = "insert into borrow_card(password, reader, rule_id, status) values(?,?,?,?)";
				pstmt = connection.prepareStatement(sql);
				pstmt.setString(1, password);
				pstmt.setString(2, reader);
				pstmt.setString(3, rule_id);

pstmt.setString(5, position);
			pstmt.setString(6, status);
			pstmt.setString(7, description);
			pstmt.setString(8, id);
			result = pstmt.executeUpdate();
		} catch (SQLException e) {
			
		} catch (ClassNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}finally {
			try {
				Base.closeResource(connection, pstmt, null);
			} catch (SQLException e) {
				e.printStackTrace();
			}
		}
		if(result==1) {
			json.put("code", "0");
			json.put("msg", "success");
		}else {
			json.put("code", "1");
			json.put("msg", "error");
		}
		out.write(json.toString());
		
		
		 
		
		//System.out.println(postData);
		//JSONObject json = JSONObject.fromObject();
	}
	
	@Override
	protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
		doPost(req, resp);
	}

}

if(condition!=null && conditionValue != null && !condition.equals("") && !conditionValue.equals("")) {
				where = " where "+ condition +" like '%" +conditionValue +"%' ";
				sql += where;
			}else if(condition!=null && condition.equals("other")) {
				where = " where return_date is null and curtime()>end_date ";
				sql +=where;
			}
			sql += " limit ?,?";
			pstmt = connection.prepareStatement(sql);
			pstmt.setInt(1, (Integer.parseInt(page)-1) * Integer.parseInt(limit));
			pstmt.setInt(2, Integer.parseInt(limit));
			resultSet = pstmt.executeQuery();
			while(resultSet.next()) {
				jsonData.put("id", resultSet.getString("id"));
				jsonData.put("card_id", resultSet.getString("card_id"));
				jsonData.put("book_id", resultSet.getString("book_id"));
				jsonData.put("borrow_date", resultSet.getString("borrow_date"));
				jsonData.put("end_date", resultSet.getString("end_date"));
				jsonData.put("return_date", resultSet.getString("return_date"));
				jsonData.put("illegal", resultSet.getString("illegal"));
				jsonData.put("manager_id", resultSet.getString("manager_id"));
				jsonArray.add(jsonData);
			}
			countSql = "select count(*) as count from borrow_books ";
			countSql +=where;
			countPstmt = connection.prepareStatement(countSql);
			countSet = countPstmt.executeQuery();
			if(countSet.next()) {
				count = countSet.getInt("count");
			}
			if(!jsonArray.isEmpty()) {
				code = 0;
				msg = "查询成功";
			}else {
				code = 0;
				msg = "没有数据";
			}
			
		} catch (ClassNotFoundException e) {
			msg = "class没找到";
		} catch (SQLException e) {
			msg = "sql错误";
		} finally {
			try {
				Base.closeResource(null, pstmt, resultSet);
				Base.closeResource(connection, countPstmt, countSet);
			} catch (SQLException e) {
				msg = "关闭资源失败";
			}
			
		}
		// 返回数据
		jsonResult.put("code", code);
		jsonResult.put("count", count);

@WebServlet("/admin/borrowList")
public class BorrowList extends HttpServlet {
	@Override
	protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
		resp.setContentType("application/json; charset=utf8");
		// 接收参数
		String limit = req.getParameter("limit");
		String page = req.getParameter("page");
    	String condition = (String) req.getParameter("condition");
    	String conditionValue = (String) req.getParameter("conditionValue");
    	String where = ""; // 无限制条件
		if(page == null) {
    		page = "1";
    	}
    	if(limit == null) {
    		limit = "10";
    	}
    	// 准备查询
		Connection connection = null;
		PreparedStatement pstmt = null;
		PreparedStatement countPstmt = null;
		ResultSet resultSet = null;
		ResultSet countSet = null;
		String sql = "";
		String countSql = "";
		// 准备返回参数
		int code = 1;
		String msg = "error";
		int count = 0;

		JSONObject jsonData = new JSONObject();
		JSONArray jsonArray = new JSONArray();
		JSONObject jsonResult = new JSONObject();
		// 进行查询
		try {
			connection = (Connection) Base.getConnection();

JSONObject jsonObject  = new JSONObject();
		// 进行查询
		if(name==null || name.equals("") || account==null || account.equals("") || password==null || password.equals("") || email==null || email.equals("")) {
			msg = "参数不能为空";
			out.print(Util.jsonResponse(code, msg, null));
		}else {
			try {
				connection = (Connection) Base.getConnection();
				// 验证账号
				sql = "select count(*) as count from manager where account=?";
				pstmt = connection.prepareStatement(sql);
				pstmt.setString(1, account);
				resultSet = pstmt.executeQuery();
				resultSet.next();
				count = resultSet.getInt("count");
				// 添加管理员
				if(count == 0) {
					sql = "insert into manager(name, account, password, email) values(?,?,?,?)";
					pstmt = connection.prepareStatement(sql);
					pstmt.setString(1, name);
					pstmt.setString(2, account);
					pstmt.setString(3, password);
					pstmt.setString(4, email);
					result = pstmt.executeUpdate();
				}
				// 返回数据
				if(result == 1 && count == 0) {
					code = 0;
					msg = "添加成功";
				}else if(count > 0){
					msg = "账号重复";
				}else {
					msg = "添加失败";
				}
			} catch (ClassNotFoundException e) {
				msg = "class not found";
			} catch (SQLException e) {
				msg = "sql错误";
			} finally {
				try {
					Base.closeResource(connection, pstmt, resultSet);
				} catch (SQLException e) {
					e.printStackTrace();
				}
			}
			out.print(Util.jsonResponse(code, msg, null));
		}
	}
}

java图书馆管理系统结果分析_java图书馆管理系统结果分析