struts2的Action使用request、response等Servlet API__方法二
struts2的Action拋棄了request、response等Servlet API，使業務層更加獨立，但有時需要使用request、response，可以利用Aware介面，servlet API中常用物件application、request、response、Session對應的Aware介面分別為ServletContextAware、ServletRequestAware、ServletResponseAware、SessionAware。程式碼如下
package com.test.struts2.action;
import java.util.Map;
import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts2.interceptor.ServletRequestAware;
import org.apache.struts2.interceptor.ServletResponseAware;
import org.apache.struts2.interceptor.SessionAware;
import org.apache.struts2.util.ServletContextAware;
import com.opensymphony.xwork2.Action;
import com.opensymphony.xwork2.ActionSupport;
public class ServletAwareAction extends ActionSupport implements
ServletRequestAware, ServletResponseAware, SessionAware,
ServletContextAware {
private static final long serialVersionUID = -2489850710438755365L;
private ServletContext application;
private HttpServletRequest request;
private HttpServletResponse response;
private Map session;
public void setServletRequest(HttpServletRequest request) {
this.request = request;
}
public void setServletResponse(HttpServletResponse response) {
this.response = response;
}
public void setSession(Map sessionValues) {
this.session = sessionValues;
}
public void setServletContext(ServletContext application) {
this.application = application;
}
public String execute() {
String upload = application.getRealPath("upload");
request.getRemoteAddr();
response.getContentType();
session.get("account");
return Action.SUCCESS;
}
}
maven中新增
<dependency>
<groupId>org.apache.struts</groupId>
<artifactId>struts2-core</artifactId>
<version>2.5.16</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
<scope>provided</scope>
</dependency>