Struts2三种传参方式(从jsp页面传到Action)
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Struts2三种传参方式(从jsp页面传到Action)
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多的不说,直接上代码;struts.xml代码:<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.1//EN"
"http://struts.apache.org/dtds/struts-2.1.dtd">
<struts><package name="login" namespace="/user" extends="struts-default"><action name="*_*" class="com.wepull.struts2.action.{1}Action"method="{2}"><result name="success">{1}_{2}.jsp</result><result name="input">User_toLogin.jsp</result></action>
</package>
</struts>第一种传参方式:import com.opensymphony.xwork2.ActionSupport;
/*** Struts2三种传参方式(从jsp页面传到Action)** 方式一:直接在action中写属性，然后写set、get方法* 1.在Action里添加属性,属性名要对应jsp上的属性名* 2.添加相应的set方法**/
public class UserAction extends ActionSupport {
private String name;
private String pass;
public String getName() {return name;
}
public void setName(String name) {this.name = name;
}
public String getPass() {return pass;
}
public void setPass(String pass) {this.pass = pass;
}public String doLogin(){String forward="input";//System.out.println(name+" "+pass);if("wepull".equalsIgnoreCase(name)&&"123".equalsIgnoreCase(pass)){return SUCCESS; //登录成功,返回成功页面}else{return forward; //登录失败,返回重新登录}
}public String toLogin(){return SUCCESS; //进入登录页面
}}------------------------------------------------------------------------------------------------------------------------------User_toLogin.jsp页面:<form action="user/User_doLogin"><table><tr><td>用户名</td><td><input type="text" name="name"></td><td> </td></tr><tr><td>密 码</td><td><input type="text" name="pass"></td><td> </td></tr><tr><td><input type="submit" value="sure" ></td><td><input type="reset" value="reset" ></td><td> </td></tr></table></form>##########################################################################第二种传参方式:import com.opensymphony.xwork2.ActionSupport;
/**
* Struts2三种传参方式(从jsp页面传到Action)
*
* 方式二:把属性封装到dto中，传值时以dto名字.其中属性
* 1.在Action里添加属性,属性名要对应jsp上的属性名
* 2.添加相应的set方法
*
*/
public class UserAction extends ActionSupport {
private UserDTO user;
public UserDTO getUser() {return user;
}
public void setUser(UserDTO user) {this.user = user;
}public String doLogin(){String forward="input";//System.out.println(user.getName()+" "+user.getPass());if("wepull".equalsIgnoreCase(user.getName())&&"123".equalsIgnoreCase(user.getPass())){return SUCCESS; }else{return forward;}
}public String toLogin(){return SUCCESS;
}
}------------------------------------------------------------------------------------------------------------------------------UserDTO.java代码public class UserDTO {
private String id;
private String name;
private String pass;
public String getId() {return id;
}
public void setId(String id) {this.id = id;
}
public String getName() {return name;
}
public void setName(String name) {this.name = name;
}
public String getPass() {return pass;
}
public void setPass(String pass) {this.pass = pass;
}
}------------------------------------------------------------------------------------------------------------------------------User_toLogin.jsp页面:<form action="user/User_doLogin"><table><tr><td>用户名</td><td><input type="text" name="user.name"></td><td> </td></tr><tr><td>密 码</td><td><input type="text" name="user.pass"></td><td> </td></tr><tr><td><input type="submit" value="sure" ></td><td><input type="reset" value="reset" ></td><td> </td></tr></table></form>##########################################################################第三种传参方式:import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.ModelDriven;
/**
* Struts2三种传参方式(从jsp页面传到Action)
*
* 方式三:实现ModelDriven
* 实现ModelDriven接口
*
*/
public class UserAction extends ActionSupport implements ModelDriven<UserDTO>{
private UserDTO user;public UserDTO getUser() {return user;
}
public void setUser(UserDTO user) {this.user = user;
}public String doLogin(){String forward="input";//System.out.println(user.getName()+" "+user.getPass());if("wepull".equalsIgnoreCase(user.getName())&&"123".equalsIgnoreCase(user.getPass())){return SUCCESS; }else{return forward;}
}public String toLogin(){return SUCCESS;
}
public UserDTO getModel() {if(user==null){user=new UserDTO();}return user;
}
}------------------------------------------------------------------------------------------------------------------------------User_toLogin.jsp页面:<form action="user/User_doLogin"><table><tr><td>用户名</td><td><input type="text" name="name"></td><td> </td></tr><tr><td>密 码</td><td><input type="text" name="pass"></td><td> </td></tr><tr><td><input type="submit" value="sure" ></td><td><input type="reset" value="reset" ></td><td> </td></tr></table></form>&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&另外,在介绍一种通过HttpServletRequest request 传参方式import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;import org.apache.struts2.ServletActionContext;import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.ModelDriven;
/**
* 获取request参数的方式
*HttpServletRequest request 传参方式
*
*/
public class UserAction extends ActionSupport{public String doLogin(){//获取request对象HttpServletRequest request=ServletActionContext.getRequest();//获取session对象//HttpSession session=request.getSession();String name=request.getParameter("name");String pass=request.getParameter("pass");String forward="input";if("wepull".equalsIgnoreCase(name)&&"123".equalsIgnoreCase(pass)){return SUCCESS; }else{return forward;}
}public String toLogin(){return SUCCESS;
}}
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