第一種：一般類，帶有public String execute()方法。

另外一種：繼承LoginActionInterface implements Action接口的類。

第三種：繼承LoginActionSupport extends ActionSupport抽象類的類。

結構圖

三個類的詳細寫法，也貼上來供大家參考

package com.test.action;import com.test.dao.UserCheck; import com.test.vo.User;public class LoginAction {private String username;public String getUsername() {return username;}public void setUsername(String username) {this.username = username;}public String getPassword() {return password;}public void setPassword(String password) {this.password = password;}private String password;public String execute(){User u=new User();u.setUsername(this.getUsername());u.setPassword(this.getPassword());/*調用業務邏輯層代碼*/UserCheck check=new UserCheck();if(check.login(u)){return "login_ok";}else{return "login_fail";}} }
package com.test.action;import com.opensymphony.xwork2.Action; import com.test.dao.UserCheck; import com.test.vo.User;public class LoginActionInterface implements Action{private String username;public String getUsername() {return username;}public void setUsername(String username) {this.username = username;}public String getPassword() {return password;}public void setPassword(String password) {this.password = password;}private String password;public String execute(){User u=new User();u.setUsername(this.getUsername());u.setPassword(this.getPassword());/*調用業務邏輯層代碼*/UserCheck check=new UserCheck();if(check.login(u)){return "login_ok";}else{return "login_fail";}} }
package com.test.action;import com.opensymphony.xwork2.ActionSupport; import com.test.dao.UserCheck; import com.test.vo.User;public class LoginActionSupport extends ActionSupport{/*** */private static final long serialVersionUID = 1L;public LoginActionSupport(){System.out.println("LoginActionSupport");}private String username;public String getUsername() {return username;}public void setUsername(String username) {this.username = username;}public String getPassword() {return password;}public void setPassword(String password) {this.password = password;}private String password;public String execute(){User u=new User();u.setUsername(this.getUsername());u.setPassword(this.getPassword());/*調用業務邏輯層代碼*/UserCheck check=new UserCheck();if(check.login(u)){return "login_ok";}else{return "login_fail";}} }

事實上我們發現。僅僅要具有public String execute()這種方法即可了。還要注意，在繼承ActionSupport的時候。默認的execute()是返回success。

轉載于:https://www.cnblogs.com/yfceshi/p/6918201.html

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