java 对象视图框架_Stripes视图框架Java对象属性验证和prototype.js Ajax的测试

Stripes视图框架Java对象属性验证，它允许对字段设置是否必须填写，对数字大小进行限制等。我用prototype.js Ajax 将验证后的数据及时地展示出来，下面来看程序。

1、编写User实体类

此用户共三个属性： name、email、age.

package com.boonya.stripes.entity;

public class User {

private String name;

private String email;

private int age;

public String getName() {

return name;

}

public void setName(String name) {

this.name = name;

}

public String getEmail() {

return email;

}

public void setEmail(String email) {

this.email = email;

}

public int getAge() {

return age;

}

public void setAge(int age) {

this.age = age;

}

2、编写UserActionBean视图控制Action类

此类中包含了用户输入界面(userRegister.jsp)和用户数据提交完成后的数据展示界面(userInfo.jsp)，我们要验证的是用户的数据合法的时候才展示用户数据。

package com.boonya.stripes.actions;

import com.boonya.stripes.entity.User;

import net.sourceforge.stripes.action.DefaultHandler;

import net.sourceforge.stripes.action.ForwardResolution;

import net.sourceforge.stripes.action.Resolution;

import net.sourceforge.stripes.action.SessionScope;

import net.sourceforge.stripes.validation.Validate;

import net.sourceforge.stripes.validation.ValidateNestedProperties;

@SessionScope

public class UserActionBean extends AbstractActionBean {

private static final long serialVersionUID = 1L;

protected static final String REGISTER="/WEB-INF/userRegister.jsp";

protected static final String USER_INFO="/WEB-INF/userInfo.jsp";

@ValidateNestedProperties({

@Validate(field ="name",required=true,on = {"viewUserInfo"}),

@Validate(field ="email",required=true,on = {"viewUserInfo"}),

@Validate(field ="age", required = true, minvalue = 13, on = {"viewUserInfo"})

})

private User user;

@DefaultHandler

public Resolution register() {

return new ForwardResolution(REGISTER);

}

public Resolution viewUserInfo(){

return new ForwardResolution(USER_INFO);

}

public void setUser(User user) {

this.user = user;

}

public User getUser() {

return user;

}

注：@ValidateNestedProperties 验证对象包含的特殊属性字段值的限制；@Validate 具体验证的字段。filed表示字段、required表示是否必需、on表示绑定到的事件方法。

3、编写界面操作的Jsp文件

userRegister.jsp

pageEncoding="UTF-8"%>

html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

User-Register

function userHandleAjax() {

var myAjax = new Ajax.Updater(‘user‘,

‘‘,

{

method: ‘get‘,

parameters:Form.serialize(‘userForm‘)

});

}

Update user info:

Name:

Email:

Age:

userInfo.jsp

pageEncoding="UTF-8"%>

uri="http://stripes.sourceforge.net/stripes.tld"%>

html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

User-Info

User‘s info

Hello ${actionBean.user.name}

Email: ${actionBean.user.email}

age: ${actionBean.user.age}

注：表单字段赋值：对象.属性即user.name等等；而取值以$(actionBean.对象.属性)，即${actionBean.user.name}等等;

4、测试表单提交数据异常处理

故意少输入参数，页面显示请求不正常页面：

产生的异常代码提示：

Caused by: java.util.MissingResourceException: Could not find an error message with any of the following keys:‘com.boonya.stripes.actions.UserActionBean.user.age.valueNotPresent‘,‘com.boonya.stripes.actions.UserActionBean.user.age.errorMessage‘,‘/actions/User.action.user.age.valueNotPresent‘,‘/actions/User.action.user.age.errorMessage‘,‘user.age.valueNotPresent‘,‘user.age.errorMessage‘,‘com.boonya.stripes.actions.UserActionBean.valueNotPresent‘.com.boonya.stripes.actions.UserActionBean.errorMessage‘, ‘/actions/User.action.valueNotPresent‘, ‘/actions/User.action.errorMessage‘, ‘validation.required.valueNotPresent‘.

at net.sourceforge.stripes.validation.ScopedLocalizableError.getMessageTemplate(ScopedLocalizableError.java:164)

at net.sourceforge.stripes.action.SimpleMessage.getMessage(SimpleMessage.java:91)

at net.sourceforge.stripes.validation.SimpleError.getMessage(SimpleError.java:102)

at net.sourceforge.stripes.tag.ErrorsTag.doEndTag(ErrorsTag.java:349)

at org.apache.jsp.WEB_002dINF.userRegister_jsp._jspService(userRegister_jsp.java:109)

at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)

at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432)

... 46more

当Stripes验证失败时，不知道怎样返回这些错误信息，解决方案也很简单：从 Stripes 包中复制一份 StripesResources.properties 到项目的源代码跟目录下(与WEB/classess同级)即可。加入StripesResources.properties文件后输入：name=boonya,[email protected],age=12.;测试效果如下图所示：