Struts2文件下载程序使用框架实现

package org.door.struts2.action; import java.util.regex.Pattern; import org.apache.struts2.ServletActionContext; import org.door.struts2.service.LoginCheck; import com.opensymphony.xwork2.ActionSupport; public class LoginAction extends ActionSupport { private static final long serialVersionUID = 1L; private String username; private String password; public String getUsername() { return username; } public String getPassword() { return password; } public void setUsername(String username) { this.username = username; } public void setPassword(String password) { this.password = password; } public void validate() { if (username == null || " ".equals(username.trim()) || username.length()<=0) { this.addFieldError( "username","username is require!"); } if (password == null || " ".equals(password.trim())||password.length()<=0) { this.addFieldError("password","password is require!"); } } public String execute() throws Exception { LoginCheck lc = new LoginCheck(); if (lc.isLogin(getUsername(), getPassword())) { ServletActionContext.getRequest().setAttribute("login", "true"); System.out.println("success"); return SUCCESS; } else { System.out.println("error"); return ERROR; } } }