pom.xml:
<packaging>war</packaging>
<dependencies>
<dependency>
<groupId>org.apache.struts</groupId>
<artifactId>struts2-core</artifactId>
<version>2.3.24</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
<scope>provided</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.tomcat.maven</groupId>
<artifactId>tomcat7-maven-plugin</artifactId>
<version>2.2</version>
<configuration>
<path>/</path>
<port>9001</port>
</configuration>
</plugin>
</plugins>
</build>
web.xml:
<!--配置文件的加载顺序
struts.xml
struts.properties
web.xml
-->
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
<welcome-file>index.html</welcome-file>
</welcome-file-list>
<filter>
<!--指定struts2的核心过滤器-->
<filter-name>struts2</filter-name>
<filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
<!--通过init-param元素配置struts常量-->
<init-param>
<param-name>struts.i18n.encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
struts.xml:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
"http://struts.apache.org/dtds/struts-2.3.dtd">
<struts>
<!--设置默认编码集-->
<constant name="struts.i18n.encoding" value="utf-8"/>
<!--使用开发模式-->
<constant name="struts.devMode" value="true"/>
<!--请求的扩展名为action或空-->
<constant name="struts.action.extension" value="action,"/>
<!--开启动态方法访问-->
<constant name="struts.enable.DynamicMethodInvocation" value="true"/>
<package name="demo1" extends="struts-default" namespace="/">
<!--全局结果页面-->
<global-results>
<result name="success">/success.jsp</result>
</global-results>
<!--method默认为execute-->
<action name="strutsDemo1" class="com.fly.action.action01" method="execute">
</action>
<!--方法一-->
<!--<action name="user_*" class="com.fly.action.userAction" method="{1}">-->
<!--方法二 使用动态-->
<action name="user" class="com.fly.action.userAction">
</action>
<action name="requestDemo" class="com.fly.action.requestDemo">
</action>
<action name="requestDemo2" class="com.fly.action.requestDemo2">
<result name="success">/success2.jsp</result>
</action>
</package>
</struts>
index.jsp:
<body>
<a href="${pageContext.request.contextPath}/strutsDemo1.action">/strutsDemo1.action</a><br>
<h4>User管理:</h4>
<a href="${pageContext.request.contextPath}/user!find">查询用户</a><br>
<a href="${pageContext.request.contextPath}/user!update">修改用户</a><br>
<a href="${pageContext.request.contextPath}/user!delete">删除用户</a><br>
<hr>
<h4>servlet的api</h4>
<form action="${pageContext.request.contextPath}/requestDemo2" method="post">
name:<input type="text" name="name">
age:<input type="text" name="age">
<input type="submit">
</form>
</body>
success.jsp:
<body>
<h4>成功</h4>
${requestName_name}
${requestName_age}
${sessionName_name}
${sessionName_age}
${applicationName_name}
${applicationName_age}
</body>
success2.jsp:
<body>
<h4>成功</h4>
${requestScope.name1}
${sessionScope.name2}
${applicationScope.name3}
</body>
action01:
public class action01 {
public String execute(){
System.out.println("执行了");
/**
* NONE 代表页面不跳转
*/
return "success";
}
}
userAction:
public class userAction extends ActionSupport {
public String find(){
System.out.println("查询联系人");
return NONE;
}
public String update(){
System.out.println("修改联系人");
return NONE;
}
public String delete(){
System.out.println("删除联系人");
return NONE;
}
}
requestDemo:
/**
* 访问servlet api方式一：不直接获取实例
*/
public class requestDemo extends ActionSupport {
@Override
public String execute() throws Exception {
//接受表单的参数
//使用struts2的ActionContext对象
ActionContext context = ActionContext.getContext();
Map<String, Object> parameters = context.getParameters();
for (String s : parameters.keySet()) {
String[] v = (String[]) parameters.get(s);
System.out.println(s+":"+v[0]);
//向request中存数据
context.put("requestName_"+s,v[0]);
//向session中存数据
context.getSession().put("sessionName_"+s,v[0]);
//向application中存数据
context.getApplication().put("applicationName_"+s,v[0]);
}
return SUCCESS;
}
}
requestDemo2:
public class requestDemo2 extends ActionSupport implements ServletRequestAware {
HttpServletRequest request;
@Override
public String execute() throws Exception {
request = ServletActionContext.getRequest();
//接受表单的参数
String name = this.request.getParameter("name");
String age = this.request.getParameter("age");
System.out.println(name+":"+age);
//向request中存数据
this.request.setAttribute("name1",name+"1");
this.request.getSession().setAttribute("name2",name+"2");
this.request.getSession().getServletContext().setAttribute("name3",name+"3");
return SUCCESS;
}
public void setServletRequest(javax.servlet.http.HttpServletRequest request) {
// this.request = request;
}
}
数据封装：
属性驱动：
/**
* 属性封装驱动方式一:属性set
*/
public class dataDemo1 extends ActionSupport {
//接受参数
private String name;
private int age;
public void setName(String name) {
this.name = name;
}
public void setAge(int age) {
this.age = age;
}
@Override
public String execute() throws Exception {
System.out.println(name+":"+age);
return NONE;
}
}
dataDemo2:
//页面提供表达式
public class dataDemo2 extends ActionSupport {
//接受参数
private User user;
//还需提供对象的get
public User getUser() {
return user;
}
public void setUser(User user) {
this.user = user;
}
@Override
public String execute() throws Exception {
System.out.println(user);
return NONE;
}
}
dataDemo3:
public class dataDemo3 extends ActionSupport implements ModelDriven<User> {
private User user = new User();
public User getModel() {
return user;
}
@Override
public String execute() throws Exception {
System.out.println(user);
return NONE;
}
}
dataDemo4:
/**
* 封装list
*/
public class dataDemo4 extends ActionSupport{
private List<User> list;
public void setList(List<User> list) {
this.list = list;
}
public List<User> getList() {
return list;
}
@Override
public String execute() throws Exception {
for (User user : list) {
System.out.println(user);
}
return NONE;
}
}
dataDemo5:
/**
* 封装map
*/
public class dataDemo5 extends ActionSupport{
private Map<String,User> map;
public Map<String, User> getMap() {
return map;
}
public void setMap(Map<String, User> map) {
this.map = map;
}
@Override
public String execute() throws Exception {
for (String s : map.keySet()) {
System.out.println(map.get(s));
}
return NONE;
}
}
dataDriver.jsp:
<body>
<h1>属性驱动</h1>
<h2>方式一:提供set方法</h2>
<form action="${pageContext.request.contextPath}/datademo1" method="post">
name:<input type="text" name="name">
age:<input type="text" name="age">
<input type="submit">
</form>
<h2>方式二:页面提供表达式</h2>
<form action="${pageContext.request.contextPath}/datademo2" method="post">
name:<input type="text" name="user.name">
age:<input type="text" name="user.age">
<input type="submit">
</form>
<hr>
<h1>模型驱动</h1>
<form action="${pageContext.request.contextPath}/datademo3" method="post">
name:<input type="text" name="name">
age:<input type="text" name="age">
<input type="submit">
</form>
<h1>封装list</h1>
<form action="${pageContext.request.contextPath}/datademo4" method="post">
name:<input type="text" name="list[0].name">
age:<input type="text" name="list[0].age">
name:<input type="text" name="list[1].name">
age:<input type="text" name="list[1].age">
<input type="submit">
</form>
<h1>封装set</h1>
<form action="${pageContext.request.contextPath}/datademo5" method="post">
name:<input type="text" name="map['A'].name">
age:<input type="text" name="map['A'].age">
name:<input type="text" name="map['B'].name">
age:<input type="text" name="map['B'].age">
<input type="submit">
</form>
</body>
EL特殊字体的使用:
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib prefix="s" uri="/struts-tags" %>
<html>
<head>
<title>EL的特殊字符的使用</title>
</head>
<body>
<h1>EL的特殊字符的使用</h1>
<h2>#号的使用</h2>
<s:property value="#request.name"/>
<br>
<s:iterator value="#{'aaa':'111','bbb':'222'}" var="entry">
<s:property value="key"/>----<s:property value="value"/>
<s:property value="#entry.key"/>----<s:property value="#entry.value"/>
</s:iterator>
<br><hr>
<s:iterator value="list" var="entry1" status="st">
<ul>
<li><s:property value="list[#st.index].name"/>----<s:property value="list[#st.index].age"/></li>
<li><s:property value="#entry1.name"/>----<s:property value="#entry1.age"/></li>
</ul>
</s:iterator>
<br>
<s:radio list="#{'1':'男','2':'女'}" name="sex"/>
<h2>%号的使用</h2>
<%--强制解析OGNL表达式--%>
<s:textfield name="name" value="%{#request.name}"/>
<br>
<s:property value="%{#request.name}"/>
<br>
<%--强制不解析OGNL表达式--%>
<s:property value="%{'#request.name'}"/>
</body>
</html>
拦截器：
PriInterceptor：
public class PriInterceptor extends MethodFilterInterceptor {
protected String doIntercept(ActionInvocation invocation) throws Exception {
System.out.println("拦截器执行了");
User1 existUser = (User1) ServletActionContext.getRequest().getSession().getAttribute("existUser");
if (existUser==null){
ActionSupport actionSupport = (ActionSupport) invocation.getAction();
actionSupport.addActionError("没有登录");
return actionSupport.LOGIN;
}else {
return invocation.invoke();
}
}
}
<!--定义拦截器-->
<interceptors>
<interceptor name="priInterceptor" class="com.fly.interceptor.PriInterceptor"/>
<interceptor-stack name="myStack">
<interceptor-ref name="priInterceptor"/>
<interceptor-ref name="defaultStack"/>
</interceptor-stack>
</interceptors>
在action中配置：
<action name="user" class="com.fly.action.userAction">
<interceptor-ref name="myStack"/>
</action>
标签使用：
<!--指定模板-->
<constant name="struts.ui.theme" value="simple"/>
Jsp：
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib prefix="s" uri="/struts-tags" %>
<html>
<head>
<title>Title</title>
</head>
<body>
<s:if test="1>2">
1>2
</s:if>
<s:elseif test="2>1">
2>1
</s:elseif>
<s:else>
2=1
</s:else>
<hr>
<table border="1">
<tr>
<th>索引</th>
<th>个数</th>
<th>值</th>
<th>第一个</th>
<th>最后一个</th>
<th>偶数</th>
<th>奇数</th>
</tr>
<%--begin默认是0--%>
<s:iterator var="v" begin="1" end="10" step="2" status="st">
<tr>
<td><s:property value="#st.index"/></td>
<td><s:property value="#st.count"/></td>
<td><s:property value="#v"/></td>
<td><s:property value="#st.first"/></td>
<td><s:property value="#st.last"/></td>
<td><s:property value="#st.even"/></td>
<td><s:property value="#st.odd"/></td>
</tr>
</s:iterator>
</table>
<s:property value="'www.baidu.com'"/><br>
<s:property value="" default="123"/><br>
<%--忽略html代码--%>
<s:property value="'<h3>www.baidu.com<h3>'" escape="true"/><br>
<%--不忽略--%>
<s:property value="'<h3>www.baidu.com<h3>'" escape="false"/><br>
<s:a action="" namespace="/" href="index.jsp">index</s:a>
<hr>
<s:form action="" method="">
<s:hidden name="" value=""/>
<s:textfield label="用户名" name=""/>
<s:password label="密码" name=""/>
<s:radio label="性别" name="sex" list="#{'1':'男','2':'女'}" value="1"/>
<s:checkboxlist label="爱好" name="" list="{'aa','bb','cc'}" labelposition="left"/>
<s:select label="爱好" list="#{'1':'aaaa','2':'bbbb'}" listKey="key" listValue="value"/>
<s:textarea label="描述" rows="5" cols="15"/>
<s:file label="头像" name=""/>
<s:reset value="重置"/>
<s:submit value="提交"/>
</s:form>
</body>
</html>