Struts2_09_xml表单验证实例

最新推荐文章于 2020-04-10 09:27:53 发布

原创最新推荐文章于 2020-04-10 09:27:53 发布 · 240 阅读

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1、内置验证

a首先建立一个JavaBean

package com.java1234.model;

public class User {

	private String userName;
	private String name;
	private int age;
	private String email;
	private String homePage;
	public String getUserName() {
		return userName;
	}
	public void setUserName(String userName) {
		this.userName = userName;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public int getAge() {
		return age;
	}
	public void setAge(int age) {
		this.age = age;
	}
	public String getEmail() {
		return email;
	}
	public void setEmail(String email) {
		this.email = email;
	}
	public String getHomePage() {
		return homePage;
	}
	public void setHomePage(String homePage) {
		this.homePage = homePage;
	}
	@Override
	public String toString() {
		return "User [userName=" + userName + ", name=" + name + ", age=" + age
				+ ", email=" + email + ", homePage=" + homePage + "]";
	}
	
	
}

b然后建立一个action

package com.java1234.model;

public class User {

	private String userName;
	private String name;
	private int age;
	private String email;
	private String homePage;
	public String getUserName() {
		return userName;
	}
	public void setUserName(String userName) {
		this.userName = userName;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public int getAge() {
		return age;
	}
	public void setAge(int age) {
		this.age = age;
	}
	public String getEmail() {
		return email;
	}
	public void setEmail(String email) {
		this.email = email;
	}
	public String getHomePage() {
		return homePage;
	}
	public void setHomePage(String homePage) {
		this.homePage = homePage;
	}
	@Override
	public String toString() {
		return "User [userName=" + userName + ", name=" + name + ", age=" + age
				+ ", email=" + email + ", homePage=" + homePage + "]";
	}
	
	
}

c在action所在的包下建立验证文件命名必须是{actionname}-validation.xml，比如action名字是RegisterAction.java，那么验证文件就RegisterAction-validation.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE validators PUBLIC "-//Apache Struts//XWork Validator 1.0.2//EN" "http://struts.apache.org/dtds/xwork-validator-1.0.2.dtd">

<validators>
    <field name="user.userName">
        <field-validator type="requiredstring"> <!-- requiredstring  必填字符串校验器 -->
            <message>请输入用户名</message>
        </field-validator>
         <field-validator type="stringlength"><!-- stringlength：字符串长度校验器 -->
         	<param name="minLength">6</param>
         	<param name="maxLength">10</param>
            <message>用户名必须在${minLength}和${maxLength}之间</message>
        </field-validator>
    </field>
    <field name="user.name">
    	<field-validator type="requiredstring">
            <message>请输入姓名</message>
        </field-validator>
    </field>
    <field name="user.age">
    	<field-validator type="int"><!-- int：整数校验器 -->
    		<param name="min">18</param>
            <message>年龄必须满18周岁</message>
        </field-validator>
    </field>
    <field name="user.email">
    	<field-validator type="requiredstring">
            <message>请输入邮件</message>
        </field-validator>
        <field-validator type="email">
            <message>邮件格式不对</message>
        </field-validator>
    </field>
    <field name="user.homePage">
    	<field-validator type="requiredstring">
            <message>请输入主页</message>
        </field-validator>
        <field-validator type="url">
            <message>主页格式不对</message>
        </field-validator>
    </field>
    
    
    <validator type="expression"><!-- 字段OGNL表达式校验器 -->
    	<param name="expression"><![CDATA[!user.name.equals(user.userName)]]></param>
    	<message>用户名和真实姓名不能相同</message>
    </validator>
</validators>

d建立jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@taglib prefix="s" uri="/struts-tags" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<s:actionerror/>
用户注册
<s:form action="/registerAction" method="post">
	<s:textfield name="user.userName" label="用户名"></s:textfield>
	<s:textfield name="user.name" label="真实姓名"></s:textfield>
	<s:textfield name="user.age" label="年龄"></s:textfield>
	<s:textfield name="user.email" label="邮件"></s:textfield>
	<s:textfield name="user.homePage" label="主页"></s:textfield>
	<s:submit value="注册"></s:submit>
</s:form>
</body>
</html>

success.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@taglib prefix="s" uri="/struts-tags" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
注册成功
</body>
</html>

e struts.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
    "http://struts.apache.org/dtds/struts-2.0.dtd">

<struts>
	
	<package name="manager" extends="struts-default">
		
		<action name="registerAction" class="com.java1234.action.RegisterAction">
			<result name="input">/register.jsp</result><!-- 当表单验证不成功时返回 input -->
			<result name="success">/success.jsp</result>
		</action>
		
	</package>
 
</struts>

f 运行结果

2、自定义验证

a建立一个自己的validator，继承FieldValidatorSupport，重写validate()方法，该验证器用于检验敏感词

package com.java1234.validators;

import com.opensymphony.xwork2.validator.ValidationException;
import com.opensymphony.xwork2.validator.validators.FieldValidatorSupport;

public class SensitiveWordValidators extends FieldValidatorSupport{

	@Override
	public void validate(Object object) throws ValidationException {
		String fieldName=this.getFieldName();
		String value=this.getFieldValue(fieldName, object).toString();
		if(!check(value)){
			this.addFieldError(fieldName, object);
		}
	}
	
	public boolean check(String value){
		String sensitiveWords[]={"操","你妈"};
		for(int i=0;i<sensitiveWords.length;i++){
			if(value.indexOf(sensitiveWords[i])>-1){
				return false;
			}
		}
		return true;
	}

}

b 在src目录下建立validators.xml，用来配置声明所以的验证器，包括自己写的，本来系统是有默认的validators.xml，当自己写了，系统就会使用自己写的

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE validators PUBLIC
        "-//Apache Struts//XWork Validator Config 1.0//EN"
        "http://struts.apache.org/dtds/xwork-validator-config-1.0.dtd">
<validators>
    <validator name="required" class="com.opensymphony.xwork2.validator.validators.RequiredFieldValidator"/>
    <validator name="requiredstring" class="com.opensymphony.xwork2.validator.validators.RequiredStringValidator"/>
    <validator name="int" class="com.opensymphony.xwork2.validator.validators.IntRangeFieldValidator"/>
    <validator name="double" class="com.opensymphony.xwork2.validator.validators.DoubleRangeFieldValidator"/>
    <validator name="date" class="com.opensymphony.xwork2.validator.validators.DateRangeFieldValidator"/>
    <validator name="expression" class="com.opensymphony.xwork2.validator.validators.ExpressionValidator"/>
    <validator name="fieldexpression" class="com.opensymphony.xwork2.validator.validators.FieldExpressionValidator"/>
    <validator name="email" class="com.opensymphony.xwork2.validator.validators.EmailValidator"/>
    <validator name="url" class="com.opensymphony.xwork2.validator.validators.URLValidator"/>
    <validator name="visitor" class="com.opensymphony.xwork2.validator.validators.VisitorFieldValidator"/>
    <validator name="conversion" class="com.opensymphony.xwork2.validator.validators.ConversionErrorFieldValidator"/>
    <validator name="stringlength" class="com.opensymphony.xwork2.validator.validators.StringLengthFieldValidator"/>
    <validator name="regex" class="com.opensymphony.xwork2.validator.validators.RegexFieldValidator"/>
    <validator name="conditionalvisitor" class="com.opensymphony.xwork2.validator.validators.ConditionalVisitorFieldValidator"/>
    
    <validator name="sensitive" class="com.java1234.validators.SensitiveWordValidators"/><!--自己写的-->
</validators>

c aciton,名为ValidationAction.java

package com.java1234.action;

import com.java1234.model.User;
import com.opensymphony.xwork2.ActionSupport;

public class ValidationAction extends ActionSupport{

	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;
	
	private String name;
	
	

	public String getName() {
		return name;
	}



	public void setName(String name) {
		this.name = name;
	}



	@Override
	public String execute() throws Exception {
		System.out.println("姓名："+name);
		return SUCCESS;
	}
	
	

}

d 验证文件ValidationAction-validation.xml 引用自己写的验证器

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE validators PUBLIC "-//Apache Struts//XWork Validator 1.0.2//EN" "http://struts.apache.org/dtds/xwork-validator-1.0.2.dtd">

<validators>
    <field name="name">
        <field-validator type="requiredstring">
            <message>请输入姓名</message>
        </field-validator>
        
        <field-validator type="sensitive">
            <message>有敏感词汇</message>
        </field-validator>
    </field>
    
</validators>

e struts.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
    "http://struts.apache.org/dtds/struts-2.0.dtd">

<struts>
	
	<package name="manager" extends="struts-default">
		
		<action name="validationAction" class="com.java1234.action.ValidationAction">
			<result name="input">/validation.jsp</result>
			<result name="success">/success.jsp</result>
		</action>
	</package>
 
</struts>

f jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@taglib prefix="s" uri="/struts-tags" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
简单自定义验证
<s:form action="/validationAction" method="post">
	<s:textfield name="name" label="姓名"></s:textfield>
	<s:submit value="提交"></s:submit>
</s:form>
</body>
</html>

g 结果