一、Struts2 get/set 自动获取/设置数据
根据上一章。中的源码继续。
HelloWorldAction.java中private String name，自动获取/设置name：
package com.cy.action;
import com.opensymphony.xwork2.Action;
public class HelloWorldAction implements Action{
private String name;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String execute() throws Exception {
System.out.println("执行了Action的默认方法");
return SUCCESS;
}
}
helloWorld.jsp:
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
${name }你好！！
</body>
</html>
1）使用get方式：
浏览器中访问：http://localhost:8080/Struts2Chap01/hello?name=asdasd
结果：
2）post方式：
编写index.jsp页面：
<body>
<form action="hello" method="post">
name: <input type="text" name="name"/>
<input type="submit" value="submit" />
</form>
</body>
浏览器中访问：http://localhost:8080/Struts2Chap01/index.jsp，输入name：
点击submit：
二、ActionSupport 类引入
HelloWorldAction2.java中继承ActionSupport：
package com.cy.action;
import com.opensymphony.xwork2.ActionSupport;
public class HelloWorldAction2 extends ActionSupport{
/**
*
*/
private static final long serialVersionUID = 1L;
private String name;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String execute() throws Exception {
System.out.println("执行了HelloWorldAction2 Action的默认方法");
return SUCCESS;
}
}
struts.xml中修改为com.cy.action.HelloWorldAction2：
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd">
<struts>
<!-- 可以创建很多的package，用name来区分 -->
<package name="helloWorld" extends="struts-default">
<action name="hello" class="com.cy.action.HelloWorldAction2">
<!-- 默认是转发，转发到helloWorld.jsp -->
<result name="success">helloWorld.jsp</result>
</action>
</package>
</struts>
测试结果ok；
ActionSupport功能更强大，以后都用ActionSupport。
三、Action 设置数据
需求：我们模拟用户登录，如果用户名为cy，密码为123456就登录成功，否则失败；
第一种：属性驱动：
A.基本数据类型属性：
com.cy.action.UserAction.java:
package com.cy.action;
import com.cy.model.User;
import com.cy.service.UserService;
import com.opensymphony.xwork2.ActionSupport;
public class UserAction extends ActionSupport{
private static final long serialVersionUID = 1L;
private UserService userService = new UserService();
private String userName;
private String password;
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;
}
public String execute() throws Exception {
System.out.println("执行了UserAction Action的默认方法");
User user = new User();
user.setUserName(userName);
user.setPassword(password);
if(userService.login(user)){
return SUCCESS;
}else{
return ERROR;
}
}
}
com.cy.model.User:
package com.cy.model;
public class User {
private String userName;
private String password;
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;
}
}
com.cy.service.UserService:
package com.cy.service;
import com.cy.model.User;
public class UserService {
public boolean login(User user){
if("cy".equals(user.getUserName()) && "123456".equals(user.getPassword())){
return true;
}else{
return false;
}
}
}
struts.xml：
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd">
<struts>
<!-- 可以创建很多的package，用name来区分 -->
<package name="helloWorld" extends="struts-default">
<action name="hello" class="com.cy.action.HelloWorldAction2">
<!-- 默认是转发，转发到helloWorld.jsp -->
<result name="success">helloWorld.jsp</result>
</action>
<action name="user" class="com.cy.action.UserAction">
<result name="success">success.jsp</result>
<result name="error">error.jsp</result>
</action>
</package>
</struts>
login.jsp登录界面：
<body>
<form action="user" method="post">
用户名: <input type="text" name="userName"/><br>
密码: <input type="password" name="password"/><br>
<input type="submit" value="登录" />
</form>
</body>
success.jsp登录成功的页面：
<body>
登录成功！
</body>
error.jsp登录失败的界面：
<body>
登录失败！
</body>
测试：
浏览器访问http://localhost:8080/Struts2Chap01/login.jsp，输入cy，123456
登录成功：
B：javaBean类型属性驱动：
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时间： 2024-08-06 16:11:13