eclipse中新建struts工程
1.新建一个动态网页工程webStruts。
注意设置classes路径为：webStruts/WebContent/WEB-INF/classes
2.引入jar包，如下图：（其中每个jar可以说都是必须的）
3.编写web.xml。
<?xmlversion="1.0"encoding="UTF-8"?>
<web-appid="WebApp_9"version="2.4"xmlns="http://java.sun.com/xml/ns/j2ee"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://java.sun.com/xml/ns/j2eehttp://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<display-name>webStruts</display-name>
<filter>
<filter-name>struts2</filter-name>
<filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<welcome-file-list>
<welcome-file>querybooks.jsp</welcome-file>
</welcome-file-list>
</web-app>
4.编写querybooks.jsp。
<%@ page language="java"pageEncoding="UTF-8"%>
<%@ taglib prefix="s"uri="/struts-tags"%>
<html>
<head>
<title>查询图书信息</title>
</head>
<body>
<s:formaction="query">
<s:textfieldlabel="书名"name="name"/>
<s:submitvalue="查询"/>
</s:form>
</body>
</html>
5.下一步我们编写action。新建一个包com.yuqiaotech.actions，在该包下新建一个QueryAction。新建一个包com.yuqiaotech.DAO，在该包下新建一个实体类BookDAO。
QueryAction.java
package com.yuqiaotech.actions;
import com.yuqiaotech.DAO.*;
import java.util.*;
import org.apache.struts2.*;
import javax.servlet.http.HttpServletRequest;
import com.opensymphony.xwork2.ActionContext;
publicclassQueryAction
{
private Stringname;
private Map<String,Integer>result;
public Map<String,Integer> getResult()
{
returnresult;
}
publicvoidsetResult(Map<String, Integer> result)
{
this.result = result;
}
public String getName()
{
returnname;
}
publicvoid setName(String name)
{
this.name = name;
}
public String execute()throws Exception
{
try
{
HttpServletRequestrequest = (HttpServletRequest) ActionContext.getContext().get(StrutsStatics.HTTP_REQUEST);
System.out.println(request.getCharacterEncoding());
BookDAO book = new BookDAO();
Map<String,Integer> books = book.getBooks(name);
request.setAttribute("result",books);
setResult(books);
return"result";
//returnSUCCESS;
}
catch (Exception e)
{
return"error";
}
}
}
BookDAO.java
package com.yuqiaotech.DAO;
import java.util.*;
publicclassBookDAO
{
privatestatic Map<String,Integer>books=newHashMap<String, Integer>();
static
{
books.put("J2EE整合详解与典型案例", 79);
books.put("VISUAL C# 2008开发技术实例祥解", 89);
books.put("STRUTS 2技术详解", 69);
books.put("ASP经典模块开发大全", 69);
books.put("ASP.NET 3.5网络数据库开发实例自学手册", 79);
books.put("XML开发典型应用：数据标记、处理、共享与分析", 65);
}
//
publicMap<String, Integer> getBooks(String name)
{
Map<String, Integer> books =newLinkedHashMap<String, Integer>();
for(Map.Entry<String, Integer> entry:BookDAO.books.entrySet())
{
if(entry.getKey().toLowerCase().contains(name.toLowerCase()))
books.put(entry.getKey(),entry.getValue());
}
return books;
}
}
6.编写struts.xml，直接放在src目录下即可
<?xmlversion="1.0"encoding="UTF-8"?>
<!DOCTYPEstrutsPUBLIC
"-//Apache Software Foundation//DTD StrutsConfiguration 2.3//EN"
"http://struts.apache.org/dtds/struts-2.3.dtd">
<struts>
<packagename="struts" extends="struts-default">
<actionname="query" class="com.yuqiaotech.actions.QueryAction">
<resultname="result">/result.jsp</result>
</action>
</package>
</struts>
7.编写result.jsp
<%@ page language="java"import="java.util.*"pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core"prefix="c"%>
<%@ taglib prefix="s"uri="/struts-tags"%>
<html>
<head>
<title>查询结果</title>
</head>
<body>
使用Java代码获得查询结果<br/>
<tableborder="1">
<tr>
<td>书名</td>
<td>价格</td>
</tr>
Map<String, Integer> result =(Map<String,Integer>) request.getAttribute("result");
for(Map.Entry<String, Integer> entry: result.entrySet())
{
%>
<tr><td>
<%= entry.getKey()%>
</td><td>
<%= entry.getValue()%>
</td>
</tr>
<%}%>
</table>
<p/>
使用JSP标签获得查询结果<br/>
<tableborder="1">
<tr>
<td>书名</td>
<td>价格</td>
</tr>
<c:forEachvar="entry"items="${result}">
<tr><td>
${entry.key}
</td><td>
${entry.value}
</tr>
</c:forEach>
</table>
<p/>
使用Struts2标签获得查询结果<br/>
<tableborder="1">
<tr>
<td>书名</td>
<td>价格</td>
</tr>
<s:iteratorvalue="result">
<tr>
<td><s:propertyvalue="key"/></td>
<td><s:propertyvalue="value"/></td>
</tr>
</s:iterator>
</table>
</body>
</html>
