web项目实现用户注册功能（JDBC+Tomcat）

package cn.itcast.web.formbean; import java.util.HashMap; import java.util.Map; import org.apache.commons.beanutils.locale.converters.DateLocaleConverter; //封装表单数据的bean类 public class RegisterFormBean { private String username; private String password; private String password2; private String email; private String birthday; private Map<String, String> errors = new HashMap<>(); public Map<String, String> getErrors() { return errors; } public void setErrors(Map<String, String> errors) { this.errors = errors; } public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } public String getPassword2() { return password2; } public void setPassword2(String password2) { this.password2 = password2; } public String getEmail() { return email; } public void setEmail(String email) { this.email = email; } public String getBirthday() { return birthday; } public void setBirthday(String birthday) { this.birthday = birthday; } /* * 校验表单数据的方法： * username 用户名不能为空 3-8字符 * password 密码不能为空 3-8字符 * password2 两次密码一致 * email 可以为空，不为空要是一个合法的邮箱 * birthday 可以为空 不为空要是一个合法的日期 */ public boolean validate(){ boolean isOk = true; if (this.username==null || this.username.trim().equals("")) { errors.put("username","用户名不能为空"); isOk = false; } if (!this.username.matches("[a-zA-Z]{3,8}")) { errors.put("username","用户名必须是3-8字符"); isOk = false; } if (this.password==null || this.password.trim().equals("")) { errors.put("password", "密码不能为空"); isOk = false; }else if(!this.password.matches("\\d{3,8}")){ errors.put("password","密码必须是3-8位数字"); isOk = false; } if (this.password != null) { if (!this.password2.equals(password)) { errors.put("password2", "两次输入的密码必须一致"); isOk = false; } } if (this.email!= null) { if (!this.email.matches("\\w+@\\w+(\\.\\w+)+")) { errors.put("email","邮箱格式不合格"); isOk = false; } } if (this.birthday!=null) { try { DateLocaleConverter converter = new DateLocaleConverter(); converter.convert(birthday); } catch (Exception e) { isOk = false; errors.put("birthday", "日期格式不合格"); } } return isOk; } }