SSH框架之Structs2

1,控制层框架 与 springmvc 效果相同

作用:  数据处理    调用后台代码    产生响应     异常处理    国际化

2,核心控制器

1. 1. springMVC  ---> DispatcherServlet
   2. Struts2    ---> 2.1.3之前版本       FilterDispatcher
   3. 2.1.3开始           StrutsPrepareAndExecuteFilter

3,配置核心文件 web.xml

<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>

4,启动Spring

<!-- 启动spring -->

     <listener>

          <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>

     </listener>

     <!-- 如果applicationContext.xml是放在src下的 必须是/WEB-INF/classes/applicationContext.xml -->

     <context-param>

          <param-name>contextConfigLocation</param-name>

          <param-value>classpath:applicationContext.xml</param-value>

     </context-param>

     <!-- 启动spring -->

5,创建Action三种方式

普通java类 属性注入 POJO

public class LoginAction {

     //属性注入

     private String username;

     private String password;

     

     public String execute() {

          

          System.out.println(username+"\t"+password);

          

          if("admin".equals(username)&&"123".equals(password)){

              //request.setAttribute("name",username);

              return "success";

          }else{

              return "error";

          }

          

     }

     

     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;

     }

     

}

 

实现 action/模型驱动

public class LoginAction2 implements Action,ModelDriven<User>{

     private User user = new User();

     

     public String execute() {

          System.out.println(user.getUsername() + "\t" + user.getPassword());

          return "success";

     }

     public User getModel() {

          return user;

     }

}

 

继承 actionSupport

 

public class LoginAction3 extends ActionSupport {

     private User user;

     public User getUser() {

          return user;

     }

     public void setUser(User user) {

          this.user = user;

     }

     @Override

     public String execute() throws Exception {

          System.out.println(user.getUsername() + "\t" + user.getPassword());

          return SUCCESS;

     }

}

6，跳转方式

 

默认跳转为请求转发

重定向方式的跳转配置

 

转载于:https://www.cnblogs.com/yuanlinjie/p/9871080.html