一、配置步骤

将框架打成jar包，然后导入新工程，并且把框架的依赖jar包导入进去
将分页标签相关文件、及相关助手类导入
框架的配置文件添加、以及web.xml的配置-以后开源框架的使用从这一步开始
完成Book实体类及bookDao的编写
完成通用的增删改方法
完成BookAction
完成mvc.xml的配置
完成前台代码的编写

二、配置框架前三步

导入相应的jar

导入之后我们选中所有的jar包===》右键===》Build Path===》Add to Build Path

导入相应的Class

导入xml文件

<?xml version="1.0" encoding="UTF-8"?>
<config><action path="/book" type="com.tgq.web.BookAction"><forward name="list" path="/bookList.jsp" redirect="false" /><forward name="toList" path="/book.action?methodName=list"redirect="true" /><forward name="toEdit" path="/bookEdit.jsp" redirect="false" /></action></config>

测试我们的数据库能否连接

三、优化基本操作（增删改）

1、基础优化

编写实体类

package com.tgq.entity;/*** 实体类* * @author tgq**/
public class Book {private int bid;private String bname;private float price;public int getBid() {return bid;}public void setBid(int bid) {this.bid = bid;}public String getBname() {return bname;}public void setBname(String bname) {this.bname = bname;}public float getPrice() {return price;}public void setPrice(float price) {this.price = price;}@Overridepublic String toString() {return "Book [bid=" + bid + ", bname=" + bname + ", price=" + price + "]";}public Book(int bid, String bname, float price) {super();this.bid = bid;this.bname = bname;this.price = price;}public Book() {// TODO Auto-generated constructor stub}
}

编写BookDao类

编写增删改查的方法

package com.tgq.dao;import java.sql.Connection;
import java.sql.PreparedStatement;
import java.util.List;import com.tgq.entity.Book;
import com.tgq.util.BaseDao;
import com.tgq.util.DBAccess;
import com.tgq.util.PageBean;
import com.tgq.util.StringUtils;public class BookDao extends BaseDao<Book> {public List<Book> list(Book book, PageBean pageBean) throws Exception {String sql = "select * from t_mvc_book where 1=1 ";String bname = book.getBname();int bid = book.getBid();// 判断是否为空if (StringUtils.isNotBlank(bname)) {sql += " and bname like '%" + bname + "%'";}// 判断前台是否传bidif (bid != 0) {sql += " and bid=" + bid;}return super.executeQuery(sql, Book.class, pageBean);}/*** 增加Book的方法* * @param book*            实体类* @return* @throws Exception*             万能异常*/public int addBook(Book book) throws Exception {String sql = "insert into t_mvc_book values(?,?,?)";Connection conn = DBAccess.getConnection();PreparedStatement ps = conn.prepareStatement(sql);ps.setObject(1, book.getBid());ps.setObject(2, book.getBname());ps.setObject(3, book.getPrice());return ps.executeUpdate();}/*** 删除Book的方法 ，根据id删除* * @param book*            实体类* @return* @throws Exception*             万能异常*/public int delBook(Book book) throws Exception {String sql = "delete from t_mvc_book where bid=?";Connection conn = DBAccess.getConnection();PreparedStatement ps = conn.prepareStatement(sql);ps.setObject(1, book.getBid());return ps.executeUpdate();}/*** 修改Book的方法* * @param book*            实体类* @return* @throws Exception*             万能异常*/public int updateBook(Book book) throws Exception {String sql = "update t_mvc_book set bname=?,price=? where bid=?";Connection conn = DBAccess.getConnection();PreparedStatement ps = conn.prepareStatement(sql);ps.setObject(1, book.getBname());ps.setObject(2, book.getPrice());ps.setObject(3, book.getBid());return ps.executeUpdate();}}

1、在增删改的方法里面我们这两行代码是一样的、重复的

		Connection conn = DBAccess.getConnection();PreparedStatement ps = conn.prepareStatement(sql);

2、代码逻辑是重复的===》sql占位符赋值

        ps.setObject(1, book.getBid());ps.setObject(2, book.getBname());ps.setObject(3, book.getPrice());

怎么解决？BaseDao
进行一个通用的增删改的方法

/*** 通用的增删改方法* * @param sql*            数据库sql语句* @param t*            对应表的实体类* @param attrs*            要修改的属性值* @return* @throws Exception*             万能异常*/public int executeUpdate(String sql, T t, String[] attrs) throws Exception {Connection conn = DBAccess.getConnection();PreparedStatement ps = conn.prepareStatement(sql);//利用fori 下标来进行？的赋值for (int i = 0; i < attrs.length; i++) {Field field = t.getClass().getDeclaredField(attrs[i]);// 打开权限field.setAccessible(true);ps.setObject(i + 1, field.get(t));}return ps.executeUpdate();}

优化BookDao

我们在BaseDao类里面增加了一个通用的增删改的方法，我们在BookDao里面利用起来

	/*** 增加Book的方法* * @param book*            实体类* @return* @throws Exception*             万能异常*/public int addBook(Book book) throws Exception {String sql = "insert into t_mvc_book values(?,?,?)";return super.executeUpdate(sql, book, new String[] { "bid", "bname", "price" });}/*** 删除Book的方法 ，根据id删除* * @param book*            实体类* @return* @throws Exception*             万能异常*/public int delBook(Book book) throws Exception {String sql = "delete from t_mvc_book where bid=?";return super.executeUpdate(sql, book, new String[] { "bid" });}/*** 修改Book的方法* * @param book*            实体类* @return* @throws Exception*             万能异常*/public int updateBook(Book book) throws Exception {String sql = "update t_mvc_book set bname=?,price=? where bid=?";return super.executeUpdate(sql, book, new String[] { "bname", "price", "bid" });}

JUnit测试

选中我们的类名===》ctrl+N===》JUnit Test Case===》选中顶部的New JUnit 4 test===》Next

勾选BookDao===》Finish

BookDaoTest测试

package com.tgq.dao;import static org.junit.Assert.*;import java.util.List;import org.junit.Test;import com.tgq.entity.Book;
import com.tgq.util.PageBean;public class BookDaoTest {private BookDao bookDao = new BookDao();@Testpublic void testList() throws Exception {Book book = new Book();book.setBname("52");PageBean pageBean = new PageBean();// pageBean.setPage(2);List<Book> list = bookDao.list(book, pageBean);for (Book b : list) {System.out.println(b);}}@Testpublic void testAddBook() throws Exception {Book book = new Book();book.setBid(52);book.setBname("5252");book.setPrice(12f);bookDao.addBook(book);}@Testpublic void testDelBook() throws Exception {Book book = new Book();book.setBid(52);bookDao.delBook(book);}@Testpublic void testUpdateBook() throws Exception {Book book = new Book();book.setBid(52);book.setBname("5252");book.setPrice(19f);bookDao.updateBook(book);}}

测试结果：

2、后台优化

我们新建一个web包，在里面新建一个BookAction类（class），继承ActionSupport，实现

ModelDriver接口，编写

package com.tgq.web;import java.util.List;import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;import com.tgq.dao.BookDao;
import com.tgq.entity.Book;
import com.tgq.util.PageBean;
import com.zking.framework.ActionSupport;
import com.zking.framework.ModelDriver;public class BookAction extends ActionSupport implements ModelDriver<Book> {private Book book = new Book();private BookDao bookDao = new BookDao();// 查询 bookList.jsppublic String list(HttpServletRequest req, HttpServletResponse resp) throws Exception {PageBean pageBean = new PageBean();pageBean.setRequest(req);List<Book> list = bookDao.list(book, pageBean);req.setAttribute("list", list);req.setAttribute("pageBean", pageBean);return "list";}// 编辑界面跳转 bookEdit.jsppublic String toEdit(HttpServletRequest req, HttpServletResponse resp) throws Exception {// 前提if (book.getBid() != 0) {List<Book> list = bookDao.list(book, null);// 不需要分页req.setAttribute("b", list.get(0));}return "toEdit";}// 增加 重定向到book.action?methodName=listpublic String add(HttpServletRequest req, HttpServletResponse resp) throws Exception {bookDao.addBook(book);return "toEdit";}// 删除public String del(HttpServletRequest req, HttpServletResponse resp) throws Exception {bookDao.delBook(book);return "toEdit";}// 修改public String update(HttpServletRequest req, HttpServletResponse resp) throws Exception {bookDao.updateBook(book);return "toEdit";}@Overridepublic Book getModel() {return book;}}

我们编写jsp界面

<%@ page language="java" contentType="text/html; charset=UTF-8"pageEncoding="UTF-8"%>
<%@ taglib uri="http://jsp.veryedu.cn" prefix="z"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<linkhref="https://cdn.bootcdn.net/ajax/libs/twitter-bootstrap/4.5.0/css/bootstrap.css"rel="stylesheet">
<scriptsrc="https://cdn.bootcdn.net/ajax/libs/twitter-bootstrap/4.5.0/js/bootstrap.js"></script>
<title>书籍列表</title>
<style type="text/css">
.page-item input {padding: 0;width: 40px;height: 100%;text-align: center;margin: 0 6px;
}.page-item input, .page-item b {line-height: 38px;float: left;font-weight: 400;
}.page-item.go-input {margin: 0 10px;
}
</style>
</head>
<body><form class="form-inline"action="${pageContext.request.contextPath }/book.action?methodName=list"method="post"><div class="form-group mb-2"><input type="text" class="form-control-plaintext" name="bname"placeholder="请输入书籍名称"><!-- 			<input name="rows" value="20" type="hidden"> --><!-- 不想分页 --><input name="pagination" value="false" type="hidden"></div><button type="submit" class="btn btn-primary mb-2">查询</button><a class="btn btn-primary mb-2"href="${pageContext.request.contextPath }/book.action?methodName=toEdit">新增</a></form><table class="table table-striped"><thead><tr><th scope="col">书籍ID</th><th scope="col">书籍名</th><th scope="col">价格</th><th scope="col">操作</th></tr></thead><tbody><c:forEach var="b" items="${books }"><tr><td>${b.bid }</td><td>${b.bname }</td><td>${b.price }</td><td><ahref="${pageContext.request.contextPath }/book.action?methodName=toEdit&bid=${b.bid}">修改</a><ahref="${pageContext.request.contextPath }/book.action?methodName=delete&bid=${b.bid}">删除</a></td></tr></c:forEach></tbody></table><!-- 这一行代码就相当于前面分页需求前端的几十行了 --><z:page pageBean="${pageBean }"></z:page></body>
</html>

增加，修改的jsp界面。

判断你点击的是否是增加还是修改
action="${pageContext.request.contextPath }/book.action?methodName=${empty b ? 'add' : 'edit'}"

<%@ page language="java" contentType="text/html; charset=UTF-8"pageEncoding="UTF-8"%>
<%@ taglib uri="http://jsp.veryedu.cn" prefix="z"%>	
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>	
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<linkhref="https://cdn.bootcdn.net/ajax/libs/twitter-bootstrap/4.5.0/css/bootstrap.css"rel="stylesheet">
<scriptsrc="https://cdn.bootcdn.net/ajax/libs/twitter-bootstrap/4.5.0/js/bootstrap.js"></script>
<title>书籍新增/修改</title>
</head>
<body><form class="form-inline"action="${pageContext.request.contextPath }/book.action?methodName=${empty b ? 'add' : 'edit'}" method="post">书籍ID：<input type="text" name="bid" value="${b.bid }"><br>书籍名称：<input type="text" name="bname" value="${b.bname }"><br>书籍价格：<input type="text" name="price" value="${b.price }"><br><input type="submit"></form></body>
</html>