struts2-action指定业务的调用

待我称王封你为后i 2022-05-30 10:43 171阅读 0赞

### Action中指定业务的调用 ###

public class UserAction {
        //一定要给private属性创建getter/setter方法
        private String username;
        private String password;
        private String msg;
        //不指定方法名时执行execute()方法
        public String execute(){
            System.out.println("12用户名是"+username);
            System.out.println("12密码是"+password);
            if(username.equals("jack") && password.equals("123")  ){
                msg="登录成功";
                return "success";
            }else{
                msg="登录失败";
                return "error";
            }
    
        }
    
       public String add(){
            System.out.println("添加方法");
    
        }
    ...
    
    
    }

##### 1.直接调用方法 #####

<struts>
     <package name="default" namespace="/" extends="struts-default">    
        <action name="login" class="com.cn.action.UserAction">
            <result name="success">/login.jsp</result>
            <result name="error">/login.jsp</result>
        </action>
     </package>
    </struts>

调用

<form action="add.action" method="post">
            username:<input type="text" name="username"/>${msg }<br/>
            password:<input type="text" name="password"/><br/>
            <input type="submit" value="submit"/>
        </form>

##### 2.动态方法调用 #####

<struts>
    
     <constant name="struts.enable.DynamicMethodInvocation" value="true"/> 
     <package name="default" namespace="/" extends="struts-default">    
        <action name="userManage" class="com.cn.action.UserAction">
            <result name="success">/login.jsp</result>
            <result name="error">/login.jsp</result>
        </action>
     </package>
    </struts>

调用

<form action="userManage!add.action" method="post">
            username:<input type="text" name="username"/>${msg }<br/>
            password:<input type="text" name="password"/><br/>
            <input type="submit" value="submit"/>
        </form>

##### 3.使用通配符 #####

调用

<form action="userManage_add.action" method="post">
            username:<input type="text" name="username"/>${msg }<br/>
            password:<input type="text" name="password"/><br/>
            <input type="submit" value="submit"/>
        </form>

### action的请求转发与重定向 ###

#### 请求转发 ####

<result name="success" type="dispatcher">/index.jsp</result>

#### 重定向 ####

<result name="success" type="redirectAction">
        <param name="actionName">userManage</param>
        <param name="method">add</param>
    </result>