Struts2防止重复提交

一般使用<interceptor-ref name="token"></interceptor-ref>或者<interceptor-ref name="tokenSession"></interceptor-ref>拦截器进行处理。我们举个简单的例子：

Jsp页面：

1 <body>
2 <s:actionerror/>
3     <s:form action="student" method="post" >
4         <s:token></s:token>
5         姓名：<input type="text" name="student.name"></input>
6         年龄：<input type="text"  name="student.age"></input>
7         <s:submit value="添加"></s:submit>
8     </s:form>
9 </body>

model:

 1 public class Student {
 2     private String name;
 3     private int age;
 4     public String getName() {
 5         return name;
 6     }
 7     public void setName(String name) {
 8         this.name = name;
 9     }
10     public int getAge() {
11         return age;
12     }
13     public void setAge(int age) {
14         this.age = age;
15     }
16     @Override
17     public String toString() {
18         return "Student [name=" + name + ", age=" + age + "]";
19     }
20 }

StudentAction处理：

 1 public class StudentAction extends ActionSupport{
 2     private static final long serialVersionUID = 1L;
 3     private Student student;
 4     public Student getStudent() {
 5         return student;
 6     }
 7     public void setStudent(Student student) {
 8         this.student = student;
 9     }
10     public String add()throws Exception{
11         System.out.println("正在添加学生： "+student);
12         Thread.sleep(5000);
13         System.out.println(student.getName()+"添加成功！");
14         return SUCCESS;
15     }
16 }

配置struts.xml：

 1 <struts>
 2     <package name="manager" extends="struts-default">
 3         <action name="student" class="com.java1234.action.StudentAction" method="add">
 4             <result name="success">/success.jsp</result>
 5             <!-- <result name="invalid.token">/student.jsp</result>
 6             <interceptor-ref name="token"></interceptor-ref>
 7             <interceptor-ref name="defaultStack"></interceptor-ref> 
 8 //方法1  
 9 -->
10             <interceptor-ref name="tokenSession"></interceptor-ref>
11             <interceptor-ref name="defaultStack"></interceptor-ref>
12 //方法2
13         </action>
14     </package>
15 </struts>

Success.jsp:

1 <body>学生添加成功！</body>

效果：

在添加了延迟之后，多次点击提交，我们发现只会添加一次。防止重复提交成功！