注意：不同的struts2版本，web.xml的配置可能不同
1．进入MyEclipse环境，新建一个Web Project。
2. 设计数据库表结构。
CREATE TABLE `book` (
`ID` varchar(255) NOT NULL,
`Name` varchar(255) DEFAULT NULL,
`Type` varchar(255) DEFAULT NULL,
`Author` varchar(255) DEFAULT NULL,
PRIMARY KEY (`ID`)
)
3. 采用Struts2技术完成数据库的CRUD。
Struts2版本：2.5.22
Struts2下载网址：https://struts.apache.org/download.cgi#struts2522
下载struts-2.5.22-all.zip,解压
解压后目录：
到lib文件夹中找到需要的jar包放到项目的/WEB-INF/lib下
总目录结构：
struts2.xml
xml version="1.0" encoding="UTF-8" ?>
DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd">
<struts>
<package name="default" namespace="/action" extends="struts-default">
<action name="BookAdd" class="action.BookAdd">
<result name="Success">/index.jspresult>
<result name="Error">/Error.jspresult>
action>
<action name="BookEdit" class="action.BookEdit">
<result name="Success">/index.jspresult>
<result name="Error">/Error.jspresult>
action>
<action name="BookDelete" class="action.BookDelete">
<result name="Success">/index.jspresult>
<result name="Error">/Error.jspresult>
action>
package>
struts>
web.xml
xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">
<display-name>实验二display-name>
<welcome-file-list>
<welcome-file>index.htmlwelcome-file>
<welcome-file>index.htmwelcome-file>
<welcome-file>index.jspwelcome-file>
<welcome-file>default.htmlwelcome-file>
<welcome-file>default.htmwelcome-file>
<welcome-file>default.jspwelcome-file>
welcome-file-list>
<filter>
<filter-name>Struts2filter-name>
<filter-class>
org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilterfilter-class>
filter>
<filter-mapping>
<filter-name>Struts2filter-name>
<url-pattern>/*url-pattern>
filter-mapping>
web-app>
index.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <% String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %> DOCTYPE html> <html> <head> <base href="<%=basePath%>"> <meta charset="UTF-8"> <title>My JSP 'index.jsp' starting pagetitle> head> <body> <form name="f1" id="f1" action="action/BookAdd.action" method="post"> <table align="center"> <h3 align="center">图书管理系统h1> <tr> <td><a href="bookadd.jsp">图书添加a>td> tr> <tr> <td><a href="booklist.jsp">图书列表a>td> tr> table> form> body> html>
bookadd.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <% String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %> DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>bookadd.jsptitle> head> <body> <form name="f1" id="f1" action="action/BookAdd.action" method="post"> <h3 align="center">图书添加h3> <table align="center"> <tr> <td colspan="2" align="center"><a href="index.jsp">返回a>td> tr> <tr> <td>编号：td> <td><input id="ID" name="ID">td> tr> <tr> <td>书名：td> <td><input id="Name" name="Name">td> tr> <tr> <td>类型：td> <td><input id="Type" name="Type">td> tr> <tr> <td>作者：td> <td><input id="Author" name="Author">td> tr> <tr> <td colspan="2" align="center"><input type="submit" value=" 确定 " >td> tr> table> form> body> html>
Error.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <%@ taglib uri="/struts-tags" prefix="s" %> <% String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %> DOCTYPE html> <html> <head> <base href="<%=basePath%>"> <meta charset="UTF-8"> <title>My JSP 'Error.jsp' starting pagetitle> head> <body> <form> <h3 align="center"><s:property value="msg" /> <br>h3> <table align="center"> <tr> <td colspan="2" align="center"><a href="index.jsp">返回a>td> tr> table> form> body> html>
BookAdd.java
package action; import java.sql.Connection; import java.sql.Statement; import com.opensymphony.xwork2.ActionSupport; import util.DBUtil; public class BookAdd extends ActionSupport{ private String ID; private String Name; private String Type; private String Author; private String Msg; public String execute() throws Exception { Connection conn = DBUtil.getConn(); String sql = "insert into book(ID,Name,Type,Author) values('" + getID() + "','" +getName()+"','"+getType()+"','"+getAuthor()+"')"; Statement state = null; try { state = conn.createStatement(); state.executeUpdate(sql); }catch (Exception e) { setMsg("编号重复!"); return "Error"; } return "Success"; } public String getID() { return ID; } public void setID(String iD) { ID = iD; } public String getName() { return Name; } public void setName(String name) { Name = name; } public String getType() { return Type; } public void setType(String type) { Type = type; } public String getAuthor() { return Author; } public void setAuthor(String author) { Author = author; } public String getMsg() { return Msg; } public void setMsg(String msg) { Msg = msg; } }
DBUtil.java
package util; import java.sql.Connection; import java.sql.DriverManager; import java.sql.ResultSet; import java.sql.SQLException; import java.sql.Statement; public class DBUtil { public static String db_url = "jdbc:mysql://localhost:3306/lianxi?useUnicode=true&characterEncoding=UTF-8"; public static String db_user = "root"; public static String db_password = "liu123"; public static Connection getConn() { Connection conn = null; try { Class.forName("com.mysql.jdbc.Driver"); conn = DriverManager.getConnection(db_url, db_user, db_password); } catch (Exception e) { e.printStackTrace(); } return conn; } public static void close(Statement state, Connection conn) { if(state!=null) { try { state.close(); } catch (SQLException e) { e.printStackTrace(); } } if(conn!=null) { try { conn.close(); } catch (SQLException e) { e.printStackTrace(); } } } public static void close(ResultSet rs, Statement state, Connection conn) { if(rs!=null) { try { rs.close(); } catch (SQLException e) { e.printStackTrace(); } } if(state!=null) { try { state.close(); } catch (SQLException e) { e.printStackTrace(); } } if(conn!=null) { try { conn.close(); } catch (SQLException e) { e.printStackTrace(); } } } }