1 struts2 获得参数 1-属性驱动获得参数
1 Demo8Action
package www.test.c_param;
import java.util.Date;
import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;
//struts2获得参数的方式1-属性驱动获得参数
public class Demo8Action extends ActionSupport {
//每次请求Action时都会创建新的Action实例对象
public Demo8Action() {
super();
System.out.println("demo8Action被创建了!");
}
public String execute() throws Exception {
ActionContext actionContext = ActionContext.getContext();
actionContext.put("username", username);
actionContext.put("age", age);
actionContext.put("birthday", birthday);
return SUCCESS;
}
//准备与参数键名称相同的属性
private String username;
//自动类型转换 只能转换8大基本数据类型以及对应包装类
private Integer age;
//支持特定类型字符串转换为Date ,例如 yyyy-MM-dd
private Date birthday;
public Integer getAge() {
return age;
}
public void setAge(Integer age) {
this.age = age;
}
public Date getBirthday() {
return birthday;
}
public void setBirthday(Date birthday) {
this.birthday = birthday;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
}
2 struts.xml
<action name="Demo8Action" class="www.test.c_param.Demo8Action" method="execute">
<result name="success" type="dispatcher">/regist.jsp</result>
</action>
3 form1.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<form action="${pageContext.request.contextPath }/Demo8Action" method="post">
用户名：<input type="text" name="username"><br/>
年龄：<input type="text" name="age"><br/>
生日：<input type="text" name="birthday"><br/>
<input type="submit" value="注册">
</form>
</body>
</html>
4 regist.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
用户名：${requestScope.username }<br/>
年龄：${requestScope.age }<br/>
出生日期：${requestScope.birthday }<br/>
</body>
</html>
2 struts2 获得参数 2-对象驱动
1 User类
package www.test.domain;
import java.util.Date;
public class User {
private String username;
private Integer age;
private Date birthday;
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public Integer getAge() {
return age;
}
public void setAge(Integer age) {
this.age = age;
}
public Date getBirthday() {
return birthday;
}
public void setBirthday(Date birthday) {
this.birthday = birthday;
}
@Override
public String toString() {
return "User [username=" + username + ", age=" + age + ", birthday=" + birthday + "]";
}
}2 Demo9Action
package www.test.c_param;
import com.opensymphony.xwork2.ActionSupport;
import www.test.domain.User;
//struts2获得参数的方式1-属性驱动获得参数
public class Demo9Action extends ActionSupport {
//准备user对象
private User user;
public String execute() throws Exception {
System.out.println(user);
return SUCCESS;
}
public User getUser() {
return user;
}
public void setUser(User user) {
this.user = user;
}
}
3 struts.xml
<action name="Demo9Action" class="www.test.c_param.Demo9Action" method="execute">
<result name="success" type="dispatcher">/form2.jsp</result>
</action>
4 form2.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<form action="${pageContext.request.contextPath }/Demo9Action" method="post">
用户名：<input type="text" name="user.username"><br/>
年龄：<input type="text" name="user.age"><br/>
生日：<input type="text" name="user.birthday"><br/>
<input type="submit" value="注册">
</form>
</body>
</html>
3 struts2 获得参数 3-模型驱动
1 Demo10Action
package www.test.c_param;
import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.ModelDriven;
import www.test.domain.User;
//struts2 获得参数 3-模型驱动
public class Demo10Action extends ActionSupport implements ModelDriven<User> {
// User对象
private User user = new User();
public String execute() throws Exception {
ActionContext context = ActionContext.getContext();
context.put("username", user.getUsername());
context.put("age", user.getAge());
context.put("username", user.getBirthday());
return SUCCESS;
}
@Override
public User getModel() {
return user;
}
}
2 struts.xml
<action name="Demo10Action" class="www.test.c_param.Demo10Action" method="execute">
<result name="success" type="dispatcher">/regist.jsp</result>
</action>
3 form3.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>struts2获得参数方式3-模型驱动</title>
</head>
<body>
<form action="${pageContext.request.contextPath }/Demo8Action" method="post">
用户名：<input type="text" name="username"><br/>
年龄：<input type="text" name="age"><br/>
生日：<input type="text" name="birthday"><br/>
<input type="submit" value="注册">
</form>
</body>
</html>
4 struts2 获得参数方式-集合类型封装
1 Demo11Action
package www.test.c_param;
import java.util.List;
import java.util.Map;
import com.opensymphony.xwork2.ActionSupport;
//struts2 封装集合类型参数
public class Demo11Action extends ActionSupport {
//list
private List list;
//map
private Map<String,String> map;
public String execute() throws Exception {
//list.clear();
System.out.println(list);
System.out.println(map);
return SUCCESS;
}
public List getList() {
return list;
}
public void setList(List list) {
this.list = list;
}
public Map<String, String> getMap() {
return map;
}
public void setMap(Map<String, String> map) {
this.map = map;
}
}
2 struts.xml
<action name="Demo11Action" class="www.test.c_param.Demo11Action" method="execute">
<result name="success" type="dispatcher">/form4.jsp</result>
</action>
3 form4.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>struts2 获得参数方式-集合类型封装</title>
</head>
<body>
<form action="${pageContext.request.contextPath }/Demo11Action" method="post">
list：<input type="text" name="list"><br/>
list：<input type="text" name="list[5]"><br/>
map：<input type="text" name="map['name']"><br/>
<input type="submit" value="提交">
</form>
</body>
</html>