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="${pageContext.request.contextPath}/Demo1Action" method="post"> 用户名:<input type="text" name="name" ><br> 年龄:<input type="text" name="age" ><br> 入职日期:<input type="text" name="hireDate" ><br> <input type="submit" value="提交" ><br> </form> </body> Action代码//使用Action获得表单提交参数 //1.在Action中准备与参数键相同的属性,并提供相应的set方法,参数值会自动封装到属性中. //2.封装参数还会帮我们自动类型转换. (8大基本数据类型|指定格式的Date类型) public class Demo7Action extends ActionSupport { private static final long serialVersionUID = 1L; private String name; private Integer age; private Date hireDate; @Override public String execute() throws Exception { System.out.println("name:"+name+",age:"+age+",hireDate:"+hireDate); return SUCCESS; } public void setName(String name) { this.name = name; } public void setAge(Integer age) { this.age = age; } public void setHireDate(Date hireDate) { this.hireDate = hireDate; } } |
二.领域对象
Jsp代码<body> <h1>领域对象</h1> <form action="${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; } } |
三.模型驱动
Jsp代码<body> <h1>模型驱动</h1> <form action="${pageContext.request.contextPath}/Demo9Action" method="post"> 用户名:<input type="text" name="name" ><br> 年龄:<input type="text" name="age" ><br> 入职日期:<input type="text" name="hireDate" ><br> <input type="submit" value="提交" ><br> </form> </body> Action代码//使用Action获得表单提交参数 //1 action实现ModelDriven接口.在实现方法中返回封装参数的User对象 //2 表单提交参数时,直接写对象中属性名即可. public class Demo9Action extends ActionSupport implements ModelDriven<User> { private static final long serialVersionUID = 1L; private User user = new User(); public User getModel() { return user; } @Override public String execute() throws Exception { System.out.println(user); return SUCCESS; } } |
复杂类型接收
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Jsp代码 <body> <h1>复杂类型接收</h1> <form action="${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; } } |