loginform.java

学生管理系统的Java实现

package request.forms;

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;
import bean.SQL_Check;



public class LoginForm extends ActionForm{
	private String id;
	private String password;

	public String getId() {
		return id;
	}
	public void setId(String id) {
		this.id = id;
	}
	public String getPassword() {
		return password;
	}
	public void setPassword(String password) {
		this.password = password;
	}

	public ActionErrors validate(ActionMapping mapping,
			HttpServletRequest request) {
		ActionErrors errors = new ActionErrors();

		if (SQL_Check.sql_in_method(getId())) {
			errors.add("admin.login.name.unallowed", new ActionMessage(
					"admin.login.name.unalloweds"));
		}
		if (SQL_Check.sql_in_method(getPassword())) {
			errors.add("admin.login.password.unallowed", new ActionMessage(
					"admin.login.password.unalloweds"));
		}

		if (getId().trim() == null || getId().trim().length() < 2) 
		{
			errors.add("admin.login.name.error", new ActionMessage(
					"admin.login.name.errors"));
		}
		if (getPassword().trim() == null || getPassword().trim().length() < 6) 
		{
			errors.add("admin.login.password.error", new ActionMessage(
					"admin.login.password.errors"));
		}
		return errors;

	}
	public void reset(ActionMapping mapping, HttpServletRequest request) {
		this.password=null;
	}//如果出错返回时密码项为空

}