AnnotationWorkflowInterceptor

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Struts2 利用配置拦截器AnnotationWorkflowInterceptor 实现Action公共类

(2011-10-11 13:22:56)

转载

▼

http://blog.sina.com.cn/s/blog_57769b7b0100ut4b.html
标签：

struts2

拦截器

杂谈

主要想实现的内容是执行一个Action时，执行用@after和@before声明的方法。
这里利用的是AnnotationWorkflowInterceptor拦截器，详细请参照官网http://struts.apache.org/2.0.11.1/docs/annotationworkflowinterceptor.html
另外例子代码可以来这里找到http://blog.sina.com.cn/s/blog_57769b7b0100unbk.html

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首先配置struts.xml

<default-interceptor-ref name="mystack" />
</package>

新建CommonAction.java

import java.util.Map;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.log4j.Logger;
import org.apache.struts2.interceptor.ServletRequestAware;
import org.apache.struts2.interceptor.ServletResponseAware;
import org.apache.struts2.interceptor.SessionAware;
import org.springframework.stereotype.Controller;
import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionInvocation;
import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.interceptor.annotations.After;
import com.opensymphony.xwork2.interceptor.annotations.Before;
import com.opensymphony.xwork2.interceptor.annotations.BeforeResult;

@Controller
public abstract class CommonAction extends ActionSupport implements SessionAware, ServletRequestAware, ServletResponseAware {

private static final long serialVersionUID = 4645378216719871106L;

private Map<String, Object> sessionMap;

private HttpServletRequest request;

private HttpServletResponse response;

// protected Log log = LogFactory.getLog(this.getClass());
protected Logger log = Logger.getLogger(this.getClass());

    @Before
    public void beforeMethod() {
        log.debug("●●before: - " + this.getClass().getName());
    }

    @BeforeResult
    public void beforeResultMethod() {
    }

    @After
    public void afterMethod() {
        ActionInvocation invocation = ActionContext.getContext().getActionInvocation();
        log.debug("●●after: - " + this.getClass().getName() + " Result(" + invocation.getResultCode() + ")");
    }

    public void setSession(Map<String, Object> session) {
        this.sessionMap = session;
    }

    public Map<String, Object> getSession() {
        return sessionMap;
    }

    public void setServletRequest(HttpServletRequest request) {
        this.request = request;
    }

    public HttpServletRequest getRequest() {
        return request;
    }

    public void setServletResponse(HttpServletResponse response) {
        this.response = response;
    }

    public HttpServletResponse getResponse() {
        return response;
    }

}

然后修改PagingSampleAction.java

public class PagingSampleAction extends CommonAction implements ModelDriven<PagingSampleModel> {

...................................

运行后可以看到log

[2011-10-11 13:54:38,700] DEBUG http-8080-Processor25 leo.test.action.PagingSampleAction - ●●before: - leo.test.action.PagingSampleAction
[2011-10-11 13:54:38,778] INFO http-8080-Processor25 leo.test.action.PagingSampleAction - execute 开始
[2011-10-11 13:54:38,778] INFO http-8080-Processor25 leo.test.action.PagingSampleAction - searchCallList 开始
..............................................
[2011-10-11 13:54:39,559] INFO http-8080-Processor25 leo.test.action.PagingSampleAction - searchCallList 结束
[2011-10-11 13:54:39,559] INFO http-8080-Processor25 leo.test.action.PagingSampleAction - execute 结束
[2011-10-11 13:54:40,184] DEBUG http-8080-Processor25 leo.test.action.PagingSampleAction - ●●after: - leo.test.action.PagingSampleAction Result(success)

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可以得知，程序是按如下顺序运行的：

1.@Before定义的方法beforeMethod()
2.Action
3.@After定义的方法afterMethod()

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