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
- springMVC ---> DispatcherServlet
- Struts2 ---> 2.1.3之前版本 FilterDispatcher
- 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
