本文介绍了一个基于Struts框架的简单登录示例，包括配置文件、JSP页面、ActionForm类和Action类的编写过程。
开发步骤:
1.导入jar包，配置相关文件.
可以先配置web.xml文件，如下：
1
<?xmlversion="1.0"encoding="UTF-8"?>
2<web-appxmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xmlns="http://java.sun.com/xml/ns/javaee"xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"xsi:schemaLocation="http://java.sun.com/xml/ns/javaeehttp://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"id="WebApp_ID"version="2.5">
3<servlet>
4<servlet-name>actionServlet</servlet-name>
5<servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
6<init-param>
7<param-name>config</param-name>
8<param-value>/WEB-INF/struts-config.xml</param-value>
9</init-param>
10<load-on-startup>0</load-on-startup>
11</servlet>
12<servlet-mapping>
13<servlet-name>actionServlet</servlet-name>
14<url-pattern>*.do</url-pattern>
15</servlet-mapping>
16</web-app>
<?xmlversion="1.0"encoding="UTF-8"?>2
<web-appxmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xmlns="http://java.sun.com/xml/ns/javaee"xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"xsi:schemaLocation="http://java.sun.com/xml/ns/javaeehttp://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"id="WebApp_ID"version="2.5">3
<servlet>4
<servlet-name>actionServlet</servlet-name>5
<servlet-class>org.apache.struts.action.ActionServlet</servlet-class>6
<init-param>7
<param-name>config</param-name>8
<param-value>/WEB-INF/struts-config.xml</param-value>9
</init-param>10
<load-on-startup>0</load-on-startup>11
</servlet>12
<servlet-mapping>13
<servlet-name>actionServlet</servlet-name>14
<url-pattern>*.do</url-pattern>15
</servlet-mapping>16
</web-app>
在WEB-INF下建立一个struts-config.xml文件，文件内容暂且如下：
1<?xmlversion="1.0"encoding="gbk"?>
2
3<!DOCTYPEstruts-configPUBLIC
4"-//ApacheSoftwareFoundation//DTDStrutsConfiguration1.3//EN"
5"http://struts.apache.org/dtds/struts-config_1_3.dtd">
6<struts-config>
7</struts-config>
<?xmlversion="1.0"encoding="gbk"?>2
3
<!DOCTYPEstruts-configPUBLIC4
"-//ApacheSoftwareFoundation//DTDStrutsConfiguration1.3//EN"5
"http://struts.apache.org/dtds/struts-config_1_3.dtd">6
<struts-config>7
</struts-config>
2.书写jsp页面：login.jsp,success.jsp,error.jsp
login.jsp:
1<%@pagelanguage="java"contentType="text/html;charset=ISO-8859-1"
2pageEncoding="ISO-8859-1"%>
3<!DOCTYPEhtmlPUBLIC"-//W3C//DTDHTML4.01Transitional//EN""http://www.w3.org/TR/html4/loose.dtd">
4<html>
5<head>
6<metahttp-equiv="Content-Type"content="text/html;charset=ISO-8859-1">
7<title>Inserttitlehere</title>
8</head>
9<body>
10<formaction="login.do"method="post">
11username:<inputtype="text"name="username"/><br/>
12password:<inputtype="password"name="password"/><br/>
13<inputtype="submit"value="submit"/>
14</form>
15</body>
16</html>
<%@pagelanguage="java"contentType="text/html;charset=ISO-8859-1"2
pageEncoding="ISO-8859-1"%>3
<!DOCTYPEhtmlPUBLIC"-//W3C//DTDHTML4.01Transitional//EN""http://www.w3.org/TR/html4/loose.dtd">4
<html>5
<head>6
<metahttp-equiv="Content-Type"content="text/html;charset=ISO-8859-1">7
<title>Inserttitlehere</title>8
</head>9
<body>10
<formaction="login.do"method="post">11
username:<inputtype="text"name="username"/><br/>12
password:<inputtype="password"name="password"/><br/>13
<inputtype="submit"value="submit"/>14
</form>15
</body>16
</html>
success.jsp:
1<body>
2<h1>loginsuccess!</h1>
3<h2>username:${requestScope.username}</h2>
4<h2>password:${requestScope.password}</h2>
5</body>
<body>2
<h1>loginsuccess!</h1>3
<h2>username:${requestScope.username}</h2>4
<h2>password:${requestScope.password}</h2>5
</body>
error.jsp:
1<body>
2<h1><fontcolor="red">loginfailed!</font></h1>
3</body>
<body>2
<h1><fontcolor="red">loginfailed!</font></h1>3
</body>
3.编写一个ActionForm的类，用来暂存请求传给服务端的数据。
1packageper.struts1.web;
2importorg.apache.struts.action.ActionForm;
3
publicclassLoginActionFormextendsActionForm{
4
privateStringusername;
5privateStringpassword;
6
publicStringgetUsername(){
7returnusername;
8
}
9publicvoidsetUsername(Stringusername){
10System.out.println(username);
11this.username=username;
12}
13publicStringgetPassword(){
14returnpassword;
15}
16publicvoidsetPassword(Stringpassword){
17System.out.println(password);
18this.password=password;
19}
20
}
21
packageper.struts1.web;2
importorg.apache.struts.action.ActionForm;3
publicclassLoginActionFormextendsActionForm{4
privateStringusername;5
privateStringpassword;6
publicStringgetUsername(){7
returnusername;8
}9
publicvoidsetUsername(Stringusername){10
System.out.println(username);11
this.username=username;12
}13
publicStringgetPassword(){14
returnpassword;15
}16
publicvoidsetPassword(Stringpassword){17
System.out.println(password);18
this.password=password;19
}20
}21
4.编写一个Action类，并覆盖其execute()方法
1packageper.struts1.web;
2importjavax.servlet.http.HttpServletRequest;
3importjavax.servlet.http.HttpServletResponse;
4importorg.apache.struts.action.Action;
5importorg.apache.struts.action.ActionForm;
6importorg.apache.struts.action.ActionForward;
7importorg.apache.struts.action.ActionMapping;
8publicclassLoginActionextendsAction{
9@Override
10publicActionForwardexecute(ActionMappingmapping,ActionFormform,
11HttpServletRequestrequest,HttpServletResponseresponse)
12throwsException{
13LoginActionFormlaf=(LoginActionForm)form;
14Stringusername=laf.getUsername();
15Stringpassword=laf.getPassword();
16System.out.println(username+":"+password);
17if("jone".equals(username)&&"jone".equals(password)){
18request.setAttribute("username",username);
19request.setAttribute("password",password);
20returnmapping.findForward("success");
21}else{
22returnmapping.findForward("error");
23}
24}
25}
26
packageper.struts1.web;2
importjavax.servlet.http.HttpServletRequest;3
importjavax.servlet.http.HttpServletResponse;4
importorg.apache.struts.action.Action;5
importorg.apache.struts.action.ActionForm;6
importorg.apache.struts.action.ActionForward;7
importorg.apache.struts.action.ActionMapping;8
publicclassLoginActionextendsAction{9
@Override10
publicActionForwardexecute(ActionMappingmapping,ActionFormform,11
HttpServletRequestrequest,HttpServletResponseresponse)12
throwsException{13
LoginActionFormlaf=(LoginActionForm)form;14
Stringusername=laf.getUsername();15
Stringpassword=laf.getPassword();16
System.out.println(username+":"+password);17
if("jone".equals(username)&&"jone".equals(password)){18
request.setAttribute("username",username);19
request.setAttribute("password",password);20
returnmapping.findForward("success");21
}else{22
returnmapping.findForward("error");23
}24
}25
}26
5.对ActionForm类及Action类在struts-config.xml文件中进行配置
1<?xmlversion="1.0"encoding="gbk"?>
2<!DOCTYPEstruts-configPUBLIC
3"-//ApacheSoftwareFoundation//DTDStrutsConfiguration1.3//EN"
4"http://struts.apache.org/dtds/struts-config_1_3.dtd">
5<struts-config>
6<form-beans>
7<form-beanname="loginForm"type="per.struts1.web.LoginActionForm">
8<!--为暂存数据的ActionForm类进行配置，name是随意取得，type为类的全限定名-->
9</form-bean>
10</form-beans>
11
12<action-mappings>
13<actionpath="/login"type="per.struts1.web.LoginAction"name="loginForm"scope="request">
14<!--为Action类进行配置,-条action标签对应一个ActionMapping类，path为访问路径，不含.do，
15type为类的全限定名，name指的是上面已经配置的ActionForm的name值，
16scope为所创建的ActionForm指明一个作用域。
17-->
18<forwardname="success"path="/success.jsp"></forward>
19<!--forward标签是用于页面跳转的，path即为跳转路径，而name起一个标识作用-->
20<forwardname="error"path="/error.jsp"></forward>
21</action>
22</action-mappings>
23</struts-config>
24
<?xmlversion="1.0"encoding="gbk"?>2
<!DOCTYPEstruts-configPUBLIC3
"-//ApacheSoftwareFoundation//DTDStrutsConfiguration1.3//EN"4
"http://struts.apache.org/dtds/struts-config_1_3.dtd">5
<struts-config>6
<form-beans>7
<form-beanname="loginForm"type="per.struts1.web.LoginActionForm">8
<!--为暂存数据的ActionForm类进行配置，name是随意取得，type为类的全限定名-->9
</form-bean>10
</form-beans>11
12
<action-mappings>13
<actionpath="/login"type="per.struts1.web.LoginAction"name="loginForm"scope="request">14
<!--为Action类进行配置,-条action标签对应一个ActionMapping类，path为访问路径，不含.do，15
type为类的全限定名，name指的是上面已经配置的ActionForm的name值，16
scope为所创建的ActionForm指明一个作用域。17
-->18
<forwardname="success"path="/success.jsp"></forward>19
<!--forward标签是用于页面跳转的，path即为跳转路径，而name起一个标识作用-->20
<forwardname="error"path="/error.jsp"></forward>21
</action>22
</action-mappings>23
</struts-config>24
至此可以进行运行测试了。只有当username与password都为"jone"的时候，才会跳到success.jsp页面。
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