【JavaWeb Structs2學習】 用Action接受參數

1.使用類接收

Action代碼

package com.test.action;

import Model.Teacher;

public class TeacherAction {
	private Teacher teacher;
	public Teacher getTeacher(){
		return teacher;
	}
	public void setTeacher(Teacher teacher){
		this.teacher=teacher;
	}
	public String add(){
		System.out.println("name"+teacher.getUsername());
		System.out.println("password"+teacher.getPassword());
		return "success";
	}
	public String error(){
		return "error";
	}
}

Teacher代碼

package Model;

public class Teacher {
	private String username;
	private String password;
	
	public String getUsername(){
		return this.username;
	}
	public String getPassword(){
		return this.password;
	}
	public void setUsername(String username){
		this.username=username;
	}
	public void setPassword(String password){
		this.password=password;
	}
}

輸入url

http://172.17.32.112:8080/Struts2/test2/Teacher_add?teacher.username=a&teacher.password=123

得到

第二個方法:用屬性接收參數(要寫get和set)

public class TeacherAction {
	private String username;

<span style="white-space:pre">	</span>private String password;

<span style="white-space:pre">	</span><pre code_snippet_id="1554438" snippet_file_name="blog_20160112_2_6365526" name="code" class="java"><span style="white-space:pre">	</span>public String getUsername(){
		return this.username;
	}
	public String getPassword(){
		return this.password;
	}
	public void setUsername(String username){
		this.username=username;
	}
	public void setPassword(String password){
		this.password=password;
	}

public String add(){System.out.println("name"+this.username);System.out.println("password"+this.password);return "success";}public String error(){return "error";}}

輸入url

http://172.17.32.112:8080/Struts2/test2/Teacher_add?username=a&password=123

得到結果一樣。

第三種方法，利用上ModelDriven

package com.test.action;

import com.opensymphony.xwork2.ModelDriven;

import Model.Teacher;

public class TeacherAction  implements ModelDriven<Teacher> {
	private Teacher teacher = new Teacher();
	public String add(){
		System.out.println("name"+teacher.getUsername());
		System.out.println("password"+teacher.getPassword());
		return "success";
	}
	public String error(){
		return "error";
	}
	public Teacher getModel(){
		return teacher;
	}
}

url輸入:

http://172.17.32.112:8080/Struts2/test2/Teacher_add?username=a&password=123.

這樣做的好處:

在jsp頁面可以再次利用這些參數

總結方法1比較好.