strut2接收参数有三种方式(普通属性领域对象模型驱动),分别对三种进行一个总结:
一.普通属性
Jsp代码
<body>
<h1>普通属性</h1>
<form action="${pageContext.request.contextPath}/Demo1Action" method="post">
用户名:<input type="text" name="name" ><br>
年龄:<input type="text" name="age" ><br>
入职日期:<input type="text" name="hireDate" ><br>
<input type="submit" value="提交" ><br>
</form>
</body>
Action代码
//使用Action获得表单提交参数
//1.在Action中准备与参数键相同的属性,并提供相应的set方法,参数值会自动封装到属性中.
//2.封装参数还会帮我们自动类型转换. (8大基本数据类型|指定格式的Date类型)
public class Demo7Action extends ActionSupport {
private static final long serialVersionUID = 1L;
private String name;
private Integer age;
private Date hireDate;
@Override
public String execute() throws Exception {
System.out.println("name:"+name+",age:"+age+",hireDate:"+hireDate);
return SUCCESS;
}
public void setName(String name) {
this.name = name;
}
public void setAge(Integer age) {
this.age = age;
}
public void setHireDate(Date hireDate) {
this.hireDate = hireDate;
}
}
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二.领域对象
Jsp代码
<body>
<h1>领域对象</h1>
<form action="${pageContext.request.contextPath}/Demo8Action" method="post">
用户名:<input type="text" name="user.name" ><br>
年龄:<input type="text" name="user.age" ><br>
入职日期:<input type="text" name="user.hireDate" ><br>
<input type="submit" value="提交" ><br>
</form>
</body>
Action代码
//使用Action获得表单提交参数
//1 在action中准备对象属性.并提供对象的set/get方法
//2 表单提交的键格式:对象属性名.属性名
public class Demo8Action extends ActionSupport {
private static final long serialVersionUID = 1L;
private User user;
@Override
public String execute() throws Exception {
System.out.println(user);
return SUCCESS;
}
public void setUser(User user) {
this.user = user;
}
public User getUser() {
return user;
}
}
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三.模型驱动
Jsp代码
<body>
<h1>模型驱动</h1>
<form action="${pageContext.request.contextPath}/Demo9Action" method="post">
用户名:<input type="text" name="name" ><br>
年龄:<input type="text" name="age" ><br>
入职日期:<input type="text" name="hireDate" ><br>
<input type="submit" value="提交" ><br>
</form>
</body>
Action代码
//使用Action获得表单提交参数
//1 action实现ModelDriven接口.在实现方法中返回封装参数的User对象
//2 表单提交参数时,直接写对象中属性名即可.
public class Demo9Action extends ActionSupport implements ModelDriven<User> {
private static final long serialVersionUID = 1L;
private User user = new User();
public User getModel() {
return user;
}
@Override
public String execute() throws Exception {
System.out.println(user);
return SUCCESS;
}
}
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复杂类型接收
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Jsp代码
<body>
<h1>复杂类型接收</h1>
<form action="${pageContext.request.contextPath}/Demo10Action" method="post">
数组:<input type="text" name="arr" ><br>
数组:<input type="text" name="arr" ><br>
数组:<input type="text" name="arr" ><br>
List:<input type="text" name="list" ><br>
List:<input type="text" name="list" ><br>
List:<input type="text" name="list" ><br>
List:<input type="text" name="list[6]" ><br>
Map:<input type="text" name="map['name']" ><br>
Map:<input type="text" name="map['age']" ><br>
Map:<input type="text" name="map['hehe']" ><br>
<input type="submit" value="提交" ><br>
</form>
</body>
Action代码
//演示使用Action获得表单提交参数 => 复杂类型接收
public class Demo10Action extends ActionSupport {
private static final long serialVersionUID = 1L;
private String[] arr ;
private List list;
private Map map;
@Override
public String execute() throws Exception {
System.out.println(Arrays.toString(arr));
System.out.println(list);
System.out.println(map);
return SUCCESS;
}
public void setArr(String[] arr) {
this.arr = arr;
}
public void setList(List list) {
this.list = list;
}
public void setMap(Map map) {
this.map = map;
}
}
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