struts2处理传入多个值

1. struts2处理传入多个值

新建项目HeadFirstStruts2Chap02_02

1) 处理数目不定的字符串

HobbyAction.java

package com.andrew.action;
import com.opensymphony.xwork2.ActionSupport;
public class HobbyAction extends ActionSupport {
    private String[] hobby;
    public String[] getHobby() {
        return hobby;
    }
    public void setHobby(String[] hobby) {
        this.hobby = hobby;
    }
    @Override
    public String execute() throws Exception {
        System.out.println("执行了HobbyAction的默认方法");
        if (hobby != null) {
            for (String h : hobby) {
                System.out.println(h);
            }
        }
        return SUCCESS;
    }
}

struts.xml

<action name="hobby" class="com.andrew.action.HobbyAction">
      <result name="success">success.jsp</result>
</action>

hobby.jsp

<form action="hobby" method="post">
    爱好：
    <input type="checkbox" name="hobby" value="唱歌"/>唱歌
    <input type="checkbox" name="hobby" value="跳舞"/>跳舞
    <input type="checkbox" name="hobby" value="睡觉"/>睡觉
    <input type="checkbox" name="hobby" value="玩CF"/>玩CF
    <input type="submit" value="提交"/>
</form>

success.jsp

OK!

http://localhost:8080/HeadFirstStruts2Chap02_02/hobby.jsp
运行结果：
Ok! 
控制台：
执行了HobbyAction的默认方法
唱歌
跳舞
睡觉
玩CF

2) 处理数目不定的JavaBean对象

Student.java

package com.andrew.model;
public class Student {
    private String name;
    private String sex;
    private int age;
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getSex() {
        return sex;
    }
    public void setSex(String sex) {
        this.sex = sex;
    }
    public int getAge() {
        return age;
    }
    public void setAge(int age) {
        this.age = age;
    }
    @Override
    public String toString() {
        return "Student [name=" + name + ", sex=" + sex + ", age=" + age + "]";
    }
}

StudentAction.java

package com.andrew.action;
import java.util.List;
import com.andrew.model.Student;
import com.opensymphony.xwork2.ActionSupport;
public class StudentAction extends ActionSupport {
    private List<Student> students;
    public List<Student> getStudents() {
        return students;
    }
    public void setStudents(List<Student> students) {
        this.students = students;
    }
    @Override
    public String execute() throws Exception {
        System.out.println("执行了StudentAction的默认方法");
        for (Student s : students) {
            System.out.println(s);
        }
        return SUCCESS;
    }
}

struts.xml

<action name="student" class="com.andrew.action.StudentAction">
      <result name="success">success.jsp</result>
</action>

addstudents.jsp

<form action="student" method="post">
    <table>
        <tr><th>姓名</th><th>性别</th><th>年龄</th></tr>
        <tr>
            <td><input type="text" name="students[0].name"/></td>
            <td><input type="text" name="students[0].sex"/></td>
            <td><input type="text" name="students[0].age"/></td>
        </tr>
        <tr>
            <td><input type="text" name="students[1].name"/></td>
            <td><input type="text" name="students[1].sex"/></td>
            <td><input type="text" name="students[1].age"/></td>
        </tr>
        <tr><td colspan="3"><input type="submit" value="提交"/></td></tr>
    </table>
</form>

success.jsp

Ok!

http://localhost:8080/HeadFirstStruts2Chap02_02/hobby.jsp
a  1  11
b  2  12 submit
运行结果：
Ok! 
控制台：
执行了StudentAction的默认方法
Student [name=a, sex=1, age=11]
Student [name=b, sex=2, age=12]