1.创建数据表，与servlet中相同
2.创建web项目，添加struts2模块，url 选 /*,web.xml中会自动注册struts2，同时src下会自动生成struts2配置文件struts.xml
3.创建JDBC以及两个pojo类
4.编写登录页面login.jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@ taglib uri="/struts-tags" prefix="s" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>登录页面</title>
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<s:form action="LoginAction" method="post" theme="simple">
<table>
<caption>用户登录</caption>
<tr>
<td>用户名</td>
<td>
<s:textfield name="user.username" size="20" />
</td>
</tr>
<tr>
<td>密码</td>
<td>
<s:password name="user.password" size="20" />
</td>
</tr>
</table>
<s:submit value="提交" />
<s:reset value="重置" />
<input type="button" value="注册" />
</s:form>
</body>
</html>
5.编写LoginAction，并配置struts.xml
public class LoginAction extends ActionSupport{
private UserTable user;
public String execute() throws Exception{
ActionContext context=ActionContext.getContext();
Map session=context.getSession();
String username=user.getUsername();
String password=user.getPassword();
boolean validated=false;
UserTable validatedUser=null;
SqlserverDBConn DBConn=new SqlserverDBConn();
String sql="select * from TEST..userTable";
ResultSet rs=DBConn.executeQuery(sql);
while(rs.next()){
if(rs.getString("username").equals(username)&&rs.getString("password").equals(password)){
validatedUser=new UserTable();
validatesUser.setId(rs.getInt(1));
validatedUser.setUsername(username);
validatedUser.setPassword(password);
session.put("user", validatedUser);
validated=true;
}
}
if(validated){
List<LyTable> al=new ArrayList();
String listSql="select * from TEST..lyTable";
rs=DBConn.executeQuery(listSql);
LyTable ly=null;
while(rs.next()){
ly=new LyTable();
ly.setId(rs.getInt(1));
ly.setUserId(rs.getInt(2));
ly.setDate(rs.getDate(3));
ly.setTitle(rs.getString(4));
ly.setContent(rs.getString(5));
al.add(ly);
}
rs.close();
DBConn.closeStmt();
DBConn.closeConn();
session.put("al", al);
return SUCCESS;
}
else{
return ERROR;
}
}
public UserTable getUser() {
return user;
}
public void setUser(UserTable user) {
this.user = user;
}
}
struts.xml
<struts>
<package name="strutsPackage" extends="struts-default">
<action name="LoginAction" class="org.action.LoginAction">
<result name="success">main.jsp</result>
</action>
</package>
</struts>
6.编写main.jsp
<html>
<head>
<title>留言板信息</title>
</head>
<body>
<s:form action="add.jsp" method="post" theme="simple">
<table border="1">
<caption>留言信息</caption>
<tr>
<th>留言人姓名</th>
<th>留言时间</th>
<th>留言标题</th>
<th>留言内容</th>
</tr>
<%
SqlserverDBConn DBConn=new SqlserverDBConn();
Connection conn=DBConn.getConnection();
PreparedStatement pstmt=null;
List<LyTable> al=(List<LyTable>)session.getAttribute("al");
Iterator it=al.iterator();
while(it.hasNext()){
LyTable ly=(LyTable)it.next();
String username=null;
String sql="select username from TEST..userTable where id=?";
pstmt=conn.prepareStatement(sql);
pstmt.setInt(1, ly.getUserId());
ResultSet rs=pstmt.executeQuery();
//String username=rs.getString(1);
while(rs.next()){
username=rs.getString(1);
}
%>
<tr>
<td><%=username%></td>
<td><%=ly.getDate() %></td>
<td><%=ly.getTitle() %></td>
<td><%=ly.getContent() %></td>
</tr>
<%
}
%>
</table>
<s:submit value="添加留言" />
</s:form>
</body>
</html>
7.编写register.jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@ taglib uri="/struts-tags" prefix="s" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>注册</title>
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<s:form action="RegisterAction" method="post" theme="simple">
<table>
<caption>用户注册</caption>
<tr>
<td>用户名</td>
<td>
<s:textfield name="user.username" />
</td>
</tr>
<tr>
<td>密码</td>
<td><s:password name="user.password" /></td>
</tr>
</table>
<s:submit value="确认" />
<s:reset value="重置" />
</s:form>
</body>
</html>
8.RegisterAction
public class RegisterAction extends ActionSupport{
private UserTable user=null;
public String execute(){
ActionContext context=ActionContext.getContext();
Map session=context.getSession();
SqlserverDBConn DBConn=new SqlserverDBConn();
Connection conn=DBConn.getConnection();
String sql="insert into TEST..userTable (username,password) values(?,?)";
PreparedStatement pstmt=null;
try {
pstmt = conn.prepareStatement(sql);
pstmt.setString(1, user.getUsername());
pstmt.setString(2, user.getPassword());
if(user!=null){
pstmt.executeUpdate();
}
pstmt.close();
DBConn.closeConn();
return SUCCESS;
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
return ERROR;
}
}
public UserTable getUser() {
return user;
}
public void setUser(UserTable user) {
this.user = user;
}
}
***一定要加user的get/set方法否则会报错
9.add.jsp
<html>
<head>
<title>添加留言</title>
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<s:form action="AddAction" method="post" theme="simple">
<table border="1">
<caption>添加留言</caption>
<tr>
<td>留言标题</td>
<td>
<s:textfield name="ly.title" />
</td>
</tr>
<tr>
<td>留言内容</td>
<td>
<s:textarea name="ly.content" rows="10" cols="20"></s:textarea>
</td>
</tr>
</table>
<s:submit value="添加" />
<s:reset value="重置" />
</s:form>
</body>
</html>
10.AddAction
public class AddAction extends ActionSupport{
private LyTable ly;
public String execute(){
ActionContext context=ActionContext.getContext();
Map session=context.getSession();
String title=ly.getTitle();
String content=ly.getContent();
UserTable user=null;
user=(UserTable)session.get("user");
LyTable ly=new LyTable();
ly.setUserId(user.getId());
ly.setDate(new Date(System.currentTimeMillis()));
//ly.setTitle(ly.getTitle())似乎有错
ly.setTitle(title);
ly.setContent(content);
List<LyTable> al=(List<LyTable>)session.get("al");
al.add(ly);
SqlserverDBConn DBConn=new SqlserverDBConn();
String sql="insert into TEST..lyTable (userId,date,title,content) values(?,?,?,?)";
PreparedStatement pstmt=null;
Connection conn=DBConn.getConnection();
try {
pstmt=conn.prepareStatement(sql);
pstmt.setInt(1, ly.getUserId());
pstmt.setDate(2, ly.getDate());
pstmt.setString(3, ly.getTitle());
pstmt.setString(4, ly.getContent());
pstmt.executeUpdate();
pstmt.close();
DBConn.closeConn();
return SUCCESS;
} catch (SQLException e) {
e.printStackTrace();
return ERROR;
}
}
public LyTable getLy() {
return ly;
}
public void setLy(LyTable ly) {
this.ly = ly;
}
}
***
//ly.setTitle(ly.getTitle())似乎有错
