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struts2的验证框架

news 来源：原创 2024/5/13 13:35:28

1、建立一个实体类，主要是对因为登陆而设置的这个验证框架，所以首先创建一个用户实体类

Java代码

import java.util.Date;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Table;
/*
*
* 用户
*
*/
@Entity
@Table(name = "user_tbl")
public class UserEntity extends BaseEntity {
/**
*
*/
private static final long serialVersionUID = 1L;
/**
* 用户名
*/
private String name;
/**
* 用户密码
*/
private String password;
@Column(name = "name", length = 255, nullable = false)
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
@Column(name = "password", length = 255, nullable = false)
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
}

import java.util.Date;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Table;

/*
 * 
 * 用户
 * 
 */

@Entity
@Table(name = "user_tbl")
public class UserEntity extends BaseEntity {
	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;
	/**
	 * 用户名
	 */
	private String name;
	
	/**
	 * 用户密码
	 */
	private String password;

	@Column(name = "name", length = 255, nullable = false)
	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}
	@Column(name = "password", length = 255, nullable = false)
	public String getPassword() {
		return password;
	}

	public void setPassword(String password) {
		this.password = password;
	}

}

2、创建登陆的Action类

Java代码

import com.opensymphony.xwork2.ActionSupport;
import com.zaotao.entity.UserEntity;
import com.zaotao.service.manage.IAdminService;
/**
* 管理员的普通action
* @author 管理员
*
*/
public class AdminAction extends ActionSupport {
/**
*
*/
private static final long serialVersionUID = 1L;
/**
* 用户实体
*/
private UserEntity user;
/**
* 验证码
*/
private String code;
public String getCode() {
return code;
}
public void setCode(String code) {
this.code = code;
}
public UserEntity getUser() {
return user;
}
public void setUser(UserEntity user) {
this.user = user;
}
/**
* 登录
* @return 登录成功
*/
public String loginAdmin()
{
return "success";
}
}

import com.opensymphony.xwork2.ActionSupport;
import com.zaotao.entity.UserEntity;
import com.zaotao.service.manage.IAdminService;

/**
 * 管理员的普通action
 * @author 管理员
 *
 */
public class AdminAction extends ActionSupport {

	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;
	
	/**
	 * 用户实体
	 */
	private UserEntity user;
	
	/**
	 * 验证码
	 */
	private String code;
		
	public String getCode() {
		return code;
	}

	public void setCode(String code) {
		this.code = code;
	}
	
	public UserEntity getUser() {
		return user;
	}

	public void setUser(UserEntity user) {
		this.user = user;
	}
	
	/**
	 * 登录
	 * @return 登录成功
	 */
	public String loginAdmin()
	{
	        return "success";
	}


	
}

3、由于struts2的查找机制（这个可以参考相关资料），我们在这两个类所在的包中分别新建UserEntity-validation.xml和AdminAction-validation.xml

(1)UserEntity-validation.xml

Java代码

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE validators PUBLIC
"-//OpenSymphony Group//XWork Validator 1.0.2//EN"
"http://www.opensymphony.com/xwork/xwork-validator-1.0.2.dtd">
<validators>
<field name="name">
<field-validator type="requiredstring">
<message>账号不能为空</message>
</field-validator>
</field>
<field name="password">
<field-validator type="requiredstring">
<message>密码不能为空</message>
</field-validator>
</field>
</validators>

<?xml version="1.0" encoding="UTF-8"?>
  <!DOCTYPE validators PUBLIC 
  		"-//OpenSymphony Group//XWork Validator 1.0.2//EN" 
  		"http://www.opensymphony.com/xwork/xwork-validator-1.0.2.dtd">

<validators>
   	<field name="name">
		<field-validator type="requiredstring">
			<message>账号不能为空</message>
	    </field-validator>
	</field>
	
	<field name="password">
		<field-validator type="requiredstring">
			<message>密码不能为空</message>
		</field-validator>
	</field>
</validators>

(2)AdminAction-validation.xml

Java代码

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE validators PUBLIC
"-//OpenSymphony Group//XWork Validator 1.0.2//EN"
"http://www.opensymphony.com/xwork/xwork-validator-1.0.2.dtd">
<validators>
<field name="user">
<field-validator type="visitor">
<message>用户:</message>
</field-validator>
</field>
<field name="code">
<field-validator type="fieldexpression">
<param name="expression">
#session.CODE.equalsIgnoreCase(code)
</param>
<message>${#session.CODE}:${code}</message>
</field-validator>
</field>
</validators>

<?xml version="1.0" encoding="UTF-8"?>
  <!DOCTYPE validators PUBLIC 
  		"-//OpenSymphony Group//XWork Validator 1.0.2//EN" 
  		"http://www.opensymphony.com/xwork/xwork-validator-1.0.2.dtd">
<validators>
	<field name="user">
		<field-validator type="visitor">
			<message>用户:</message>
		</field-validator>
	</field>

	<field name="code">
		<field-validator type="fieldexpression">
			<param name="expression">
				#session.CODE.equalsIgnoreCase(code)
			</param>
			<message>${#session.CODE}:${code}</message>
		</field-validator>
	</field>
</validators>

4、建立登陆的jsp页面

Java代码

<s:form id="loginForm" action="login_AdminAction">
<div class="admin_main_top"></div>
<div id="admin_main">
<div class="admin_main_head"></div>
<div id="admin_main_content">
<ul class="admin_main_ul">
<li>
<label>用户名:</label>
<s:textfield name ="user.name" id="name"/>
<span id="usererror" class="errorMeg"></span>
</li>
<li>
<label>密码:</label>
<s:password id="pwd" name="user.password" οnfοcus="clearError('pwderror')" />
<span id="pwderror" class="errorMeg"></span>
</li>
<li>
<label>验证码:</label>
<img src="<%=contextPath %>/authImg.servlet" id="authImg" οnclick="refresh()" />
<s:textfield name="code" id="code" onFocus="clearError('codeerror');" />
<span id="codeerror" class="errorMeg"></span>
</li>
<li>
<s:submit id="login_button" value="登录" />
</li>
</ul>
</div>
</div>
<div><s:fielderror cssStyle="color: red"></s:fielderror></div>
</s:form>

<s:form id="loginForm" action="login_AdminAction">
		<div class="admin_main_top"></div>
		<div id="admin_main">
			<div class="admin_main_head"></div>
			<div id="admin_main_content">
				<ul class="admin_main_ul">
					<li>
						<label>用户名:</label>
						<s:textfield name ="user.name" id="name"/>
						<span id="usererror" class="errorMeg"></span>
				    </li>
				
					<li>
						<label>密码:</label>
						<s:password id="pwd" name="user.password" οnfοcus="clearError('pwderror')" />
						<span id="pwderror" class="errorMeg"></span>
					</li>
			
					<li>
						<label>验证码:</label>
						<img src="<%=contextPath %>/authImg.servlet"  id="authImg" οnclick="refresh()" />
						<s:textfield  name="code" id="code"  onFocus="clearError('codeerror');" />
						<span id="codeerror" class="errorMeg"></span> 
					</li>
					
					<li>
						<s:submit id="login_button" value="登录" />
					</li>
				</ul>
			</div>
					</div>
		<div><s:fielderror cssStyle="color: red"></s:fielderror></div>
	</s:form>

Action的配置就不写了，说一下注意点。

(1)

<field-validator type="visitor">
<message>用户:</message>
</field-validator>

这段代码中message标签内不能为空，否则将会报错,visitor类型的作用在于，当验证字段user时，将获得user的类型，并根据类型UserEntity查找UserEntity-validation.xml,执行验证。

(2)

当你使用了图形验证码，你想在验证框架中将其进行验证时。需要先将图形验证码的字符串放入session中，然后在验证框架中验证。
<message>${#session.CODE}:${code}</message>
写这句的原因是我在执行图形验证的时候，老是验证不正确，所以我使用这句话，将存放在session中的code和我输入的code在错误信息内输出，已查看是否出现问题

(3)

如果你的表单使用的是simple方式,那么s:form是不会显示错误信息的，那么

我们在jsp页面写入 <s:fielderror cssStyle="color: red"></s:fielderror>,用来输出错误信息，当然你也可以针对每个字段输出错误信息。如果错误信息重复显示，说明你的action采用的单例模式，请将其修改为scope="prototype"

(4)

使用struts验证框架，需要配置input结果跳转。

(5)

若校验同时提供XML和validate()两种方法，则都会被执行，而且是XML校验先执行，validate()方法后执行。而错误信息都会显示。"short-circuit"属性仅针对xml有效

转载于:https://www.cnblogs.com/programmer-wind/archive/2011/08/08/2919663.html