Struts1表单验证方法

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本文的字例子是在MyEclipse5.5下均运行成功

在struts1的标单验证一般有两种方式，一种是通过ActionForm的validate函数进行验证，另一种就是利用validate框架进行验证，下面将通过两个非空验证的简单例子对这两种验证方法进行一下讨论。

Validate函数验证 public ActionErrors alidate(ActionMapping mapping, HttpServletRequest request)

这个验证是在客户端的ActionForm的public ActionErrors alidate(ActionMapping mapping,HttpServletRequest request)方法中进行的，该函数通过对标单进行检验，返回一个ActionErrors的对象，如果这个对象为空就返回到输入页面中，并通过<html:errors/>标签进行错误的显示，下面展示一下源代码：

下面试是导航图：

struts-config.xml:这里主要是配置了一个Form和一个Action，注意validate="true"这是必须的。

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.2//EN" "http://struts.apache.org/dtds/struts-config_1_2.dtd">

<struts-config>

<data-sources />

<form-beans >

<form-bean name="validateForm" type="com.qiudawei115.struts.form.ValidateForm" />

</form-beans>

<global-exceptions />

<global-forwards />

<action-mappings >

<action

attribute="validateForm"

input="/input.jsp"

name="validateForm"

path="/validate"

scope="request"

type="com.qiudawei115.struts.action.ValidateAction" validate="true">

</action>

</action-mappings>

<message-resources parameter="com.qiudawei115.struts.ApplicationResources" />

<plug-in className="org.apache.struts.validator.ValidatorPlugIn">

<set-property property="pathnames" value="/WEB-INF/validator-rules.xml,

/WEB-INF/validation.xml"/>

</plug-in>

</struts-config>

输入页面input.jsp:通过<html:errors/>标签来显示错误

<%@ page language="java" pageEncoding="ISO-8859-1"%>

<%@ taglib uri="http://jakarta.apache.org/struts/tags-bean" prefix="bean"%>

<%@ taglib uri="http://jakarta.apache.org/struts/tags-html" prefix="html"%>

<html>

<head>

<title>JSP for ValidateForm form</title>

<html:base/>

</head>

<body>

<html:form action="/validate" method="post" focus="testString" >

testString : <html:text property="testString"/><html:errors property="testString"/><br/>

<html:submit/><html:cancel/>

</html:form>

</body>

</html>

<%@ page language="java" pageEncoding="ISO-8859-1"%>

<%@ taglib uri="http://struts.apache.org/tags-bean" prefix="bean" %>

<%@ taglib uri="http://struts.apache.org/tags-html" prefix="html" %>

<%@ taglib uri="http://struts.apache.org/tags-logic" prefix="logic" %>

<%@ taglib uri="http://struts.apache.org/tags-tiles" prefix="tiles" %>

验证通过页面：validateOk.jsp

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html:html lang="true">

<head>

<html:base />

<title>validateOk.jsp</title>

<!--

-->

</head>

<body>

This a struts page. <br>

<bean:message key="ok"/>

</body>

</html:html>

ActionForm:com.qiudawei115.struts.form.ValidateForm.java:注意validate方法里面内容

* Generated by MyEclipse Struts

* Template path: templates/java/JavaClass.vtl

package com.qiudawei115.struts.form;

import javax.servlet.http.HttpServletRequest;

import org.apache.struts.action.ActionErrors;

import org.apache.struts.action.ActionForm;

import org.apache.struts.action.ActionMapping;

import org.apache.struts.action.ActionMessage;

/**

* MyEclipse Struts

* Creation date: 06-13-2007

* XDoclet definition:

* @struts.form name="validateForm"

public class ValidateForm extends ActionForm {

* Generated fields

/** testString property */

private String testString;

* Generated Methods

/**

* Method validate

* @param mapping

* @param request

* @return ActionErrors

public ActionErrors validate(ActionMapping mapping,

HttpServletRequest request) {

// TODO Auto-generated method stub

ActionErrors errors=new ActionErrors();

if(testString==null||testString.trim().length()<=0){

errors.add("testString", new ActionMessage("errors.required"));

}

return errors;

}

/**

* Method reset

* @param mapping

* @param request

public void reset(ActionMapping mapping, HttpServletRequest request) {

// TODO Auto-generated method stub

}

/**

* Returns the testString.

* @return String

public String getTestString() {

return testString;

}

/**

* Set the testString.

* @param testString The testString to set

public void setTestString(String testString) {

this.testString = testString;

}

Action:com.qiudawei115.struts.action.ValidateAction.java这只是一个简单导航

* Generated by MyEclipse Struts

* Template path: templates/java/JavaClass.vtl

package com.qiudawei115.struts.action;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import org.apache.struts.action.Action;

import org.apache.struts.action.ActionForm;

import org.apache.struts.action.ActionForward;

import org.apache.struts.action.ActionMapping;

import com.qiudawei115.struts.form.ValidateForm;

/**

* MyEclipse Struts

* Creation date: 06-13-2007

* XDoclet definition:

* @struts.action path="/validate" name="validateForm" input="/input.jsp" scope="request" validate="true"

public class ValidateAction extends Action {

* Generated Methods

/**

* Method execute

* @param mapping

* @param form

* @param request

* @param response

* @return ActionForward

public ActionForward execute(ActionMapping mapping, ActionForm form,

HttpServletRequest request, HttpServletResponse response) {

ValidateForm validateForm = (ValidateForm) form;// TODO Auto-generated method stub

return mapping.findForward("ok");

}

com.qiudawei115.struts.ApplicationResources.properties资源文件

包含错误信息

# Resources for parameter 'com.qiudawei115.struts.ApplicationResources'

# Project Struts1Validate

# Basic Message

ok=Validate OK!

# Struts Validator Error Messages

errors.required=this is required.

Validate框架验证

使用框架验证需要在WEB-INF下添加两个xml配置文件，validation.xml和validator-rules.xml,其中validator-rules.xml定义的是脚本，validation.xml由开发者自己添加验证规则。所有的出错信息从资源文件中读取。

下面是导航图：

Struts-config.xml:注意action标记的validate属性，设置为false表示在客户端验证，本例子是客户端验证。

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.2//EN" "http://struts.apache.org/dtds/struts-config_1_2.dtd">

<struts-config>

<data-sources />

<form-beans >

<form-bean name="testForm" type="com.yourcompany.struts.form.TestForm" />

</form-beans>

<global-exceptions />

<global-forwards />

<action-mappings >

<action

attribute="testForm"

input="/input.jsp"

name="testForm"

path="/test"

scope="request"

type="com.yourcompany.struts.action.TestAction" validate="false">

</action>

</action-mappings>

<message-resources parameter="com.yourcompany.struts.ApplicationResources" />

<plug-in className="org.apache.struts.validator.ValidatorPlugIn">

<set-property property="pathnames" value="/WEB-INF/validator-rules.xml,

/WEB-INF/validation.xml"/>

</plug-in>

</struts-config>

Validation.xml:注意红体字为验证的部分，arg0代表了资源文件中的{0}

<?xml version="1.0" encoding="ISO-8859-1" ?>

<!DOCTYPE form-validation PUBLIC

"-//Apache Software Foundation//DTD Commons Validator Rules Configuration 1.1.3//EN"

"http://jakarta.apache.org/commons/dtds/validator_1_1_3.dtd">

<form-validation>

<!--

This is a minimal Validator form file with a couple of examples.

-->

<!-- An example global constant

<constant-name>postalCode</constant-name>

<constant-value>^/d{5}/d*$</constant-value>

</constant>

end example-->

</global>

</field>

</form>

</formset>

</form-validation>

资源文件com/yourcompany/struts/ApplicationResources.properties

# Resources for parameter 'com.yourcompany.struts.ApplicationResources'

test=testField

# Project StrutsValidate1

errors.required={0} is required.

errors.minlength={0} can not be less than {1} characters.

errors.maxlength={0} can not be greater than {1} characters.

errors.invalid={0} is invalid.

errors.byte={0} must be a byte.

errors.short={0} must be a short.

errors.integer={0} must be an integer.

errors.long={0} must be a long.

errors.float={0} must be a float.

errors.double={0} must be a double.

errors.date={0} is not a date.

errors.range={0} is not in the range {1} through {2}.

errors.creditcard={0} is an invalid credit card number.

errors.email={0} is an invalid e-mail address.

入口input.jsp:注意：红体部分表示客户端生成的javascript代码要求formName表示验证的表单名字

<%@ page language="java" pageEncoding="ISO-8859-1"%>

<%@ taglib uri="http://jakarta.apache.org/struts/tags-bean" prefix="bean"%>

<%@ taglib uri="http://jakarta.apache.org/struts/tags-html" prefix="html"%>

<html>

<head>

<title>JSP for TestForm form</title>

</head>

<body>

<html:javascript formName="testForm" staticJavascript="true" dynamicJavascript="true" />

<html:form action="/test" method="post" focus="testString" onsubmit="return validateTestForm(this);">

testString : <html:text property="testString"/><html:errors property="testString"/><br/>

<html:submit/><html:cancel/>

</html:form>

</body>

</html>

ActionForm: com.yourcompany.struts.form.TestForm.java注意这个Form一定要继承自ValidaorForm，并且最好不要修改validate函数。

package com.yourcompany.struts.form;

import javax.servlet.http.HttpServletRequest;

import org.apache.struts.action.ActionErrors;

import org.apache.struts.action.ActionMapping;

import org.apache.struts.validator.ValidatorForm;

/**

* MyEclipse Struts

* Creation date: 06-13-2007

* XDoclet definition:

* @struts.form name="testForm"

public class TestForm extends ValidatorForm {

* Generated fields

/** testString property */

private String testString;

* Generated Methods

/**

* Method validate

* @param mapping

* @param request

* @return ActionErrors

public ActionErrors validate(ActionMapping mapping,

HttpServletRequest request) {

// TODO Auto-generated method stub

return null;

}

/**

* Method reset

* @param mapping

* @param request

public void reset(ActionMapping mapping, HttpServletRequest request) {

// TODO Auto-generated method stub

}

/**

* Returns the testString.

* @return String

public String getTestString() {

return testString;

}

/**

* Set the testString.

* @param testString The testString to set

public void setTestString(String testString) {

this.testString = testString;

}

Action: com.yourcompany.struts.action.TestAction.java

package com.yourcompany.struts.action;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import org.apache.struts.action.Action;

import org.apache.struts.action.ActionForm;

import org.apache.struts.action.ActionForward;

import org.apache.struts.action.ActionMapping;

import com.yourcompany.struts.form.TestForm;

/**

* MyEclipse Struts

* Creation date: 06-13-2007

* XDoclet definition:

* @struts.action path="/test" name="testForm" input="/input.jsp" scope="request" validate="true"

public class TestAction extends Action {

* Generated Methods

/**

* Method execute

* @param mapping

* @param form

* @param request

* @param response

* @return ActionForward

public ActionForward execute(ActionMapping mapping, ActionForm form,

HttpServletRequest request, HttpServletResponse response) {

TestForm testForm = (TestForm) form;// TODO Auto-generated method stub

return mapping.findForward("ok");

}

MyJsp.Jsp导航最终页面

<%@ page language="java" pageEncoding="ISO-8859-1"%>

<%@ taglib uri="http://struts.apache.org/tags-bean" prefix="bean" %>

<%@ taglib uri="http://struts.apache.org/tags-html" prefix="html" %>

<%@ taglib uri="http://struts.apache.org/tags-logic" prefix="logic" %>

<%@ taglib uri="http://struts.apache.org/tags-tiles" prefix="tiles" %>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html:html lang="true">

<head>

<html:base />

<title>MyJsp.jsp</title>

<!--

-->

</head>

<body>

This a struts page. <br>

</body>

</html:html>

至此已经简单的介绍了Struts1的两种验证方法，希望对大家有所帮助.如果有疑问，可向我索取源代码,一起讨论。

qiuyin_1985@126.com