用Struts寫一個簡單的圖書管理
阿新 • • 發佈：2018-12-19
用Struts2寫一個簡單的圖書管理
1.在搭建完整的strust2下完成此專案，如有未完成，請參考第一篇部落格，strust2的搭建過程
首先新建一個普通的javaweb專案,如圖所示：
2.把自己所需要的.jar包匯入到檔案中，如下圖所示：
3.在自己專案檔案下建立包，注意，一定要在SRC下建立，如下圖：
4.在webRoot 下建立檔案，如下圖所示：
BookAction.java程式碼如下：
package com.hnpi.action; import java.util.ArrayList; import java.util.List; import javax.servlet.http.HttpServletRequest; import org.apache.struts2.ServletActionContext; import com.hnpi.bean.Book; import com.hnpi.service.BookService; import com.hnpi.service.impl.BookServiceImpl; import com.opensymphony.xwork2.ActionSupport; public class BookAction extends ActionSupport { private Book book; public Book getBook() { return book; } public void setBook(Book book) { this.book = book; } /** * 圖書列表 * @return */ public String bookList() { BookService bookService = new BookServiceImpl(); List<Book> books = new ArrayList<Book>(); books = bookService.selectBooks(); HttpServletRequest request = ServletActionContext.getRequest(); request.setAttribute("books", books); return "success"; } }
LoginAction.java程式碼如下：
package com.hnpi.action; import java.util.Map; import javax.servlet.http.HttpSession; import com.opensymphony.xwork2.ActionContext; import com.opensymphony.xwork2.ActionSupport; public class LoginAction extends ActionSupport { private String name; private String pwd; public String getName() { return name; } public void setName(String name) { this.name = name; } public String getPwd() { return pwd; } public void setPwd(String pwd) { this.pwd = pwd; } public String login(){ System.out.println(name+":"+pwd); if(name !=null &&!"".equals(name) && pwd !=null &&!"".equals(pwd)){ //判斷 if(name.equals("fuxian")&&pwd.equals("123")){ Map<String, Object> session = ActionContext.getContext().getSession(); session.put("user", name); return "success"; }else{ return "error"; } }else{ return "error"; } } }
Book.java程式碼如下：
package com.hnpi.bean; public class Book { private int id; private String bookName; private String bookAuthor; private String bookIsbn; private String bookPublish; public int getId() { return id; } public void setId(int id) { this.id = id; } public String getBookName() { return bookName; } public void setBookName(String bookName) { this.bookName = bookName; } public String getBookAuthor() { return bookAuthor; } public void setBookAuthor(String bookAuthor) { this.bookAuthor = bookAuthor; } public String getBookIsbn() { return bookIsbn; } public void setBookIsbn(String bookIsbn) { this.bookIsbn = bookIsbn; } public String getBookPublish() { return bookPublish; } public void setBookPublish(String bookPublish) { this.bookPublish = bookPublish; } public Book() { super(); } public Book(int id, String bookName, String bookAuthor, String bookIsbn, String bookPublish) { super(); this.id = id; this.bookName = bookName; this.bookAuthor = bookAuthor; this.bookIsbn = bookIsbn; this.bookPublish = bookPublish; } public String toString() { return "Book [bookAuthor=" + bookAuthor + ", bookIsbn=" + bookIsbn + ", bookName=" + bookName + ", bookPublish=" + bookPublish + ", id=" + id + "]"; } }
BookDao.java程式碼如下：
package com.hnpi.dao;
import java.util.List;
import com.hnpi.bean.Book;
public interface BookDao {
public List<Book> selectBooks();
}
BookDaoFileImpl.java程式碼如下：
package com.hnpi.dao.impl;
import java.util.List;
import com.hnpi.bean.Book;
import com.hnpi.dao.BookDao;
public class BookDaoFileImpl implements BookDao{
public List<Book> selectBooks() {
// TODO 讀取檔案的程式碼
return null;
}
}
BookDaoImpl.java程式碼如下：
package com.hnpi.dao.impl;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.util.ArrayList;
import java.util.List;
import com.hnpi.bean.Book;
import com.hnpi.dao.BookDao;
import com.hnpi.util.DBUtil;
public class BookDaoImpl implements BookDao {
public List<Book> selectBooks() {
Connection conn = DBUtil.getConn();
String sql = "select * from book";
PreparedStatement ps = null;
ResultSet rs = null;
List<Book> books = new ArrayList<Book>();
try {
ps = conn.prepareStatement(sql);
rs = ps.executeQuery();
while(rs.next()){
Book book = new Book();
book.setId(rs.getInt(1));
book.setBookName(rs.getString(2));
book.setBookAuthor(rs.getString(3));
book.setBookIsbn(rs.getString(4));
book.setBookPublish(rs.getString(5));
books.add(book);
}
} catch (Exception e) {
e.printStackTrace();
} finally {
DBUtil.closeConn(conn, ps, null);
}
return books;
}
}
BookDaoRedisImpl.java程式碼如下：
package com.hnpi.dao.impl;
import java.util.List;
import com.hnpi.bean.Book;
import com.hnpi.dao.BookDao;
public class BookDaoRedisImpl implements BookDao{
public List<Book> selectBooks() {
// TODO 訪問快取的程式碼
return null;
}
}
UserInterceptor.java程式碼如下：
package com.hnpi.interceptor;
import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionInvocation;
import com.opensymphony.xwork2.interceptor.AbstractInterceptor;
public class UserInterceptor extends AbstractInterceptor{
@Override
public String intercept(ActionInvocation invocation) throws Exception {
String user=(String) ActionContext.getContext().getSession().get("user");
if (user==null||"".equals(user)) {
return "fail";
}
return invocation.invoke();
}
}
BookService.java程式碼如下：
package com.hnpi.service;
import java.util.List;
import com.hnpi.bean.Book;
public interface BookService {
/**
* 查詢所有圖書
* @return
*/
public List<Book> selectBooks();
}
BookServiceImpl.java程式碼如下：
package com.hnpi.service.impl;
import java.util.List;
import com.hnpi.bean.Book;
import com.hnpi.dao.BookDao;
import com.hnpi.dao.impl.BookDaoFileImpl;
import com.hnpi.dao.impl.BookDaoImpl;
import com.hnpi.service.BookService;
public class BookServiceImpl implements BookService {
public List<Book> selectBooks() {
BookDao bookDao = new BookDaoImpl();
return bookDao.selectBooks();
}
}
DBUtil.java程式碼如下：
package com.hnpi.util;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
public class DBUtil {
public static Connection getConn() {
String url = "jdbc:sqlserver://localhost:1433;databaseName=MyDB";
String user = "sa";
String pwd = "1";
Connection conn = null;
try {
Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
conn = DriverManager.getConnection(url, user, pwd);
} catch (SQLException e) {
e.printStackTrace();
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
return conn;
}
public static void closeConn(Connection conn, PreparedStatement ps,
ResultSet rs) {
try {
if (conn != null) {
conn.close();
}
} catch (SQLException e) {
e.printStackTrace();
}
try {
if (ps != null) {
ps.close();
}
} catch (SQLException e) {
e.printStackTrace();
}
try {
if (rs != null) {
rs.close();
}
} catch (SQLException e) {
e.printStackTrace();
}
}
}
struts.xml配置檔案程式碼如下：
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd">
<struts>
<package name="user" namespace="/user" extends="struts-default">
<action name="login" class="com.hnpi.action.LoginAction" method="login">
<result name="success" type="chain">
<param name="namespace">/book</param>
<param name="actionName">bookList</param>
<param name="method">bookList</param>
</result>
<result name="fail">/user/login.jsp</result>
</action>
</package>
<package name="book" namespace="/book" extends="struts-default">
<interceptors>
<interceptor name="userInterceptor" class="com.hnpi.interceptor.UserInterceptor"></interceptor>
<interceptor-stack name="selfStack">
<interceptor-ref name="userInterceptor"></interceptor-ref>
<interceptor-ref name="defaultStack"></interceptor-ref>
</interceptor-stack>
</interceptors>
<default-interceptor-ref name="selfStack"></default-interceptor-ref>
<global-results>
<result name="fail">/user/login.jsp</result>
</global-results>
<action name="bookList" class="com.hnpi.action.BookAction" method="bookList">
<result name="success">/book/bookList.jsp</result>
</action>
</package>
</struts>
bookList.jsp程式碼如下：
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib prefix="s" uri="/struts-tags" %>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>圖書列表</title>
<style type="text/css">
body{
margin-left: 300pt;
}
table,table tr th, table tr td
{
border: 1px solid grey
}
</style>
</head>
<body>
<a href='<%=basePath %>book/toAddBook'>新增圖書</a>
<table>
<thead>
<tr>
<td>ID</td>
<td>書名</td>
<td>作者</td>
<td>ISBN</td>
<td>出版社</td>
<td>操作</td>
</tr>
</thead>
<s:iterator value="#request.books" status="book">
<tr>
<td><s:property value="id"/></td>
<td><s:property value="bookName"/></td>
<td><s:property value="bookAuthor"/></td>
<td><s:property value="bookIsbn"/></td>
<td><s:property value="bookPublish"/></td>
<td><a href='#'>更新</a> <a href='#'>刪除</a></td>
</tr>
</s:iterator>
</table>
</body>
</html>
login.jsp程式碼如下：
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>登入頁面</title>
</head>
<body>
<form action="user/login" method="post">
使用者名稱：<input type="text" name="name"/><br />
密碼：<input type="text" name="pwd"/><br />
<input type="submit" value="提交" />
</form>
</body>
</html>
以上內容僅供參考，如有錯誤，請留言聯絡