SSH action+struts.xml+jsp

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item10 问答

DuestionsAction 控制类

package cn.action;
import java.util.Date;
import java.util.List;
import cn.biz.DuestionsBiz;
import cn.entity.Answers;
import cn.entity.Duestions;
import com.opensymphony.xwork2.ActionSupport;
@SuppressWarnings("serial")
public class DuestionsAction extends ActionSupport {
	private DuestionsBiz duestionsBiz;
	private List<Duestions> duestions;
	private List<Answers> answers;
	private Answers answer;
	private Duestions duestion;
	private Integer id;
	/**
	 * 显示列表
	 * @return
	 * @throws Exception
	 */
	public String getAll() throws Exception{
		/*
		 * 如果 id 不为空，代表是从 findDetatil.acton 传来的数据
		 * 第一步：根据 id 获取问题表的数据
		 * 第二步：插入应答表的数据，主键是问题表
		 * 第三步：设置问题表的应答次数，和最新的时间
		 * 第四步：修改问题表数据
		 */
		if(id != null){
			duestion = duestionsBiz.findById(id);
			duestionsBiz.insert(new Answers(duestion, answer.getAnscontent(), new Date()));
			duestion.setAnsewercount(duestionsBiz.findAnswersList(id).size());
			duestion.setLastmodidfied(new Date());
			duestionsBiz.update(duestion);
			id = null;//清空，要不然重复插入应答表的数据
		}
		//最后，显示列表
		duestions = duestionsBiz.findAll();
		return SUCCESS;
	}
	/**
	 * 应答表列表
	 * @return
	 * @throws Exception
	 */
	public String findDetatil() throws Exception{
		//传过的 id 来获取数据
		if(id != null){
		duestion = duestionsBiz.findById(id);
		answers = duestionsBiz.findAnswersList(id);
		}
		return SUCCESS;
	}
	/**
	 * 插入问题表数据
	 * @return
	 * @throws Exception
	 */
	public String doAdd() throws Exception{
		if(duestion!=null){
			duestionsBiz.add(new Duestions(duestion.getTitle(), duestion.getDetaildesc(), 0, new Date()));
		}
		return SUCCESS;
	}
	public DuestionsBiz getDuestionsBiz() {
		return duestionsBiz;
	}
	public void setDuestionsBiz(DuestionsBiz duestionsBiz) {
		this.duestionsBiz = duestionsBiz;
	}
	public List<Duestions> getDuestions() {
		return duestions;
	}
	public void setDuestions(List<Duestions> duestions) {
		this.duestions = duestions;
	}
	public Duestions getDuestion() {
		return duestion;
	}
	public void setDuestion(Duestions duestion) {
		this.duestion = duestion;
	}
	public Integer getId() {
		return id;
	}
	public void setId(Integer id) {
		this.id = id;
	}
	public List<Answers> getAnswers() {
		return answers;
	}
	public void setAnswers(List<Answers> answers) {
		this.answers = answers;
	}
	public Answers getAnswer() {
		return answer;
	}
	public void setAnswer(Answers answer) {
		this.answer = answer;
	}
}

struts.xml 配置

<?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>
	<constant name="struts.i18n.encoding" value="utf-8"></constant>
	<constant name="struts.ui.theme" value="simple"></constant>
	<constant name="struts.configuration.xml.reload" value="true"></constant>
	<package name="cn.action" extends="struts-default" namespace="/">
		<!-- 显示列表 -->
		<action name="getAll" class="cn.action.DuestionsAction" method="getAll">
			<result name="success">/list.jsp</result>
		</action>
		<!-- 查看应答 -->
		<action name="findDetatil" class="cn.action.DuestionsAction"
			method="findDetatil">
			<result name="success">/detail.jsp</result>
		</action>
		<!-- 添加问题 -->
		<action name="doAdd" class="cn.action.DuestionsAction" method="doAdd">
			<result name="success">/index.jsp</result>
		</action>
	</package>
</struts>

index.jsp 页面

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<%
	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>My JSP 'index.jsp' starting page</title>
</head>
<body>
	<!-- 跳转页面 -->
	<c:redirect url="getAll.action" />
</body>
</html>

list.jsp 页面

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<%@ taglib uri="/struts-tags" prefix="s"%>
<%
	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>在线回答</title>
<style type="text/css">
*{ margin:0; padding:0; }  
body{ font-family:"宋体"; color:#333; font-size:14px; background:#fff;}  
a{ color:#069; text-decoration:underline;}  
a:hover{ color:#f60; text-decoration:underline;}  
h3{ text-align:center; line-height:40px;}
p{ text-align: center; height: 23px;}  
table{ margin:0 auto; line-height:23px;}  
table tr th{ background:#B8860B;}  
table tr td{ padding:0 8px;}  
table .tdBg td{ background:#999}  
</style>
</head>
<body>
	<div style=" padding: 8px; width: 480px; margin: 0 auto;">
		<h3>在线回答</h3>
		<p>
			<a href="question.jsp">我要提问</a>
		</p>
		<table border="1">
			<tr>
				<th>序号</th>
				<th>问题</th>
				<th>回答次数</th>
				<th>最后修改</th>
			</tr>
			<s:iterator value="duestions" status="st">
			<tr <s:if test="#st.even">class="tdBg"</s:if>>
				<td><s:property value="id"></s:property></td>
				<td><a href="findDetatil.action?id=<s:property value='id'/>">
				<s:property value="title"></s:property></a></td>
				<td><s:property value="ansewercount"></s:property></td>
				<td>&nbsp;<s:date name="lastmodidfied" format="yyyy-MM-dd"></s:date></td>
			</tr>
			</s:iterator>
		</table>
	</div>
</body>
</html>

效果图：

detail.jsp 页面

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<%@ taglib uri="/struts-tags" prefix="s"%>
<%
	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>我来回答</title>
<style type="text/css">  
*{ margin:0; padding:0; }  
body{ font-family:"宋体"; color:#333; font-size:14px; background:#fff;}  
table{ margin:0 auto; line-height:23px;}   
table tr td{ padding:0 8px;} 
table tr .tdbg{ background: #999;} 
</style>  
</head>
<body>
	<div style=" padding: 8px; width: 480px; margin: 0 auto;">
		<form action="getAll.action" method="post">
			<table border="1">
				<tr><td>问题：</td><td class="tdbg">
				<s:property value="duestion.title"></s:property></td></tr>
				<tr><td>问题描述：</td><td class="tdbg">
				<s:property value="duestion.detaildesc"></s:property></td></tr>
				<s:iterator value="answers">
				<tr><td>网友回答</td><td class="tdbg">
					<s:property value="anscontent"></s:property>
					<br><s:date name="ansdate" format="yyyy-MM-dd"></s:date>
				</td></tr>
				</s:iterator>
				<tr><td>我来回答</td><td>
					<input type="hidden" name="id" value="<s:property value='id'/>">
					<input type="text" name="answer.anscontent"></td></tr>
				<tr><td><a href="index.jsp">返回</a></td><td><input type="submit"></td></tr>
			</table>
		</form>
	</div>
</body>
</html>

效果图：

question.jsp 页面

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<%@ taglib uri="/struts-tags" prefix="s"%>
<%
	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>我要提问</title>
<style type="text/css">  
body{ font-family:"宋体"; color:#333; font-size:14px; background:#fff;}  
a{ color:#069; text-decoration:underline;}  
a:hover{ color:#f60; text-decoration:underline;}  
h3{ text-align:center; line-height:40px;}
p{ text-align: center;}  
</style>  
</head>
<body>
	<div style=" width: 300px; margin: 0 auto;">
		<form action="doAdd.action" method="post">
			<h3>我要提问</h3>
			<p><a href="index.jsp">返回首页</a></p>
			<table>
				<tr><td>问题：</td><td><input type="text" name="duestion.title"></td></tr>
				<tr><td>问题描述：</td><td><input type="text" name="duestion.detaildesc"></td></tr>
				<tr><td></td><td><input type="submit" value="保存问题">
				&nbsp;&nbsp;<a href="index.jsp">返回</a></td></tr>
			</table>
		</form>
	</div>
</body>
</html>

效果图：