1、新建一個javaweb項目，並將struts的jar包拷貝到WebRoot/WEB-INF/lib下。
2、拷貝完jar包還不能進行工作，用戶的請求必須達到ActionServlet，我們才能通過struts處理請求，所以還需要將ActionServlet配置在web.xml文件裡面。
[java]
<?xml version="1.0" encoding="UTF-8"?>
<web-app 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/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<servlet>
<servlet-name>action</servlet-name>
<servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>action</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
</web-app>
<?xml version="1.0" encoding="UTF-8"?>
<web-app 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/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<servlet>
<servlet-name>action</servlet-name>
<servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>action</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
</web-app>
3、建立actionForm，表單上的用戶名和密碼，必須與actionForm中屬性的get/set方法後半部分一致。
[java]
package com.xxjstgb.struts;
import org.apache.struts.action.ActionForm;
/**
* 登錄ActionForm，負責表單收集數據
* @author liuzhengquan
*
*/@SuppressWarnings("serial")
public class LoginActionForm extends ActionForm {
private String userName;
private String password;
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
}
package com.xxjstgb.struts;
import org.apache.struts.action.ActionForm;
/**
* 登錄ActionForm，負責表單收集數據
* @author liuzhengquan
*
*/@SuppressWarnings("serial")
public class LoginActionForm extends ActionForm {
private String userName;
private String password;
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
}
4、建立LoginAction，這裡需要繼承struts的Action類。處理Model層的邏輯，並返回轉向信息。
[java]
package com.xxjstgb.struts;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
/**
* 登錄Action
* 負責取得表單數據、調用業務邏輯、返回轉向信息
* @author liuzhengquan
*
*/
public class LoginAction extends Action {
@Override
public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws Exception {
LoginActionForm laf=(LoginActionForm)form;
String userName=laf.getUserName();
String password=laf.getPassword();
UserManager userManager=new UserManager();
try {
userManager.login(userName, password);
return mapping.findForward("success");
} catch (UserNoFoundException e) {
e.printStackTrace();
request.setAttribute("msg", "用戶不能找到，用戶名稱=【"+userName+"】");
}catch (PasswordErrorException e) {
e.printStackTrace();
request.setAttribute("msg", "密碼錯誤");
}
return mapping.findForward("error");
}
}
package com.xxjstgb.struts;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
/**
* 登錄Action
* 負責取得表單數據、調用業務邏輯、返回轉向信息
* @author liuzhengquan
*
*/
public class LoginAction extends Action {
@Override
public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws Exception {
LoginActionForm laf=(LoginActionForm)form;
String userName=laf.getUserName();
String password=laf.getPassword();
UserManager userManager=new UserManager();
try {
userManager.login(userName, password);
return mapping.findForward("success");
} catch (UserNoFoundException e) {
e.printStackTrace();
request.setAttribute("msg", "用戶不能找到，用戶名稱=【"+userName+"】");
}catch (PasswordErrorException e) {
e.printStackTrace();
request.setAttribute("msg", "密碼錯誤");
}
return mapping.findForward("error");
}
}
5、配置struts-config.xml文件。在struts（一）裡面我們通過if…else判斷截取的URL，根據相應的URL，調用相應的Action。在struts框架裡面已經對此做了簡單的封裝，我們只需要將action和actionForm配置在struts-config.xml文件裡面。通過映射他們的關系，來實現匹配工作，替代了原來的if…else語句。
[java]
<?xml version="1.0" encoding="ISO-8859-1" ?>
<!DOCTYPE struts-config PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 1.2//EN"
"http://struts.apache.org/dtds/struts-config_1_2.dtd">
<struts-config>
<form-beans>
<form-bean name="LoginForm" type="com.xxjstgb.struts.LoginActionForm"></form-bean>
</form-beans>
<action-mappings>
<action path="/login"
type="com.xxjstgb.struts.LoginAction"
name="LoginForm"
scope="request">
<forward name="success" path="/login_success.jsp"></forward>
<forward name="error" path="/login_failed.jsp"></forward>
</action>
</action-mappings>
</struts-config>
<?xml version="1.0" encoding="ISO-8859-1" ?>
<!DOCTYPE struts-config PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 1.2//EN"
"http://struts.apache.org/dtds/struts-config_1_2.dtd">
<struts-config>
<form-beans>
<form-bean name="LoginForm" type="com.xxjstgb.struts.LoginActionForm"></form-bean>
</form-beans>
<action-mappings>
<action path="/login"
type="com.xxjstgb.struts.LoginAction"
name="LoginForm"
scope="request">
<forward name="success" path="/login_success.jsp"></forward>
<forward name="error" path="/login_failed.jsp"></forward>
</action>
</action-mappings>
</struts-config>
6、訪問
[html]
<body>
<form action="login.do" method="post">
用戶名：<input type="text" name="userName"><br>
密 碼：<input type="password" name="password"> <br>
<input type="submit" value="登錄">
</form>
</body>
<body>
<form action="login.do" method="post">
用戶名：<input type="text" name="userName"><br>
密 碼：<input type="password" name="password"> <br>
<input type="submit" value="登錄">
</form>
</body>
至此，通過struts框架完成了登錄實例。
