【Struts2复习知识点十七】 动态的结果集

struts.xml

<struts>
    <constant name="struts.devMode" value="true" />
    <package name="user" namespace="/user" extends="struts-default">
        
        <action name="user" class="com.bjsxt.struts2.user.action.UserAction">
            <result>${r}</result>
        </action>        
    </package>
        
</struts>

UserAction .java

public class UserAction extends ActionSupport {
    private int type;
    
    private String r;

    public String getR() {
        return r;
    }

    public void setR(String r) {
        this.r = r;
    }

    public int getType() {
        return type;
    }

    public void setType(int type) {
        this.type = type;
    }

    @Override
    public String execute() throws Exception {
        if(type == 1) r="/user_success.jsp";
        else if (type == 2) r="/user_error.jsp";
        return "success";
    }

}

访问地址：http://localhost:8080/project/user/user?type=1

http://localhost:8080/project/user/user?type=2

struts.xml中 result里的${r}可以动态取得对应的action中的成员属性。