userinfobo.java

conference java project

package cn.edu.jlu.csw.team5.bussness;

import java.sql.Connection;
import java.sql.SQLException;
import java.lang.Exception;
import cn.edu.jlu.csw.team5.dbase.UserInfoDao;

public class UserInfoBo {

    private Connection cnn = null;

    public UserInfoBo(Connection cnn) {
        this.cnn = cnn;
    }

    public String validatePwd(String username, String password) {

        String validateResult = "";

        try {
            UserInfoDao userInfoDao = new UserInfoDao(cnn);
            validateResult = userInfoDao.validatePwd(username, password);
            if (validateResult.equals("error.password.invalid")) {
                //如果用户名与口令不匹配则报此错
                throw new RuntimeException("error.password.invalid");
            } else if (validateResult.equals("error.noMatch")) {
                //如果找不到用户则报此错，这样用户看到的出错信息会更详细
                throw new RuntimeException("error.noMatch");
            }
        } catch (Exception e) {
            throw new RuntimeException(e.getMessage());

        } finally {
            try {
                if (cnn != null) {
                    cnn.close();
                }
            } catch (SQLException sqle) {
                sqle.printStackTrace();
                throw new RuntimeException("error.unexpected");
            }
        }
        return validateResult;
    }
}