src/com/ischoolbar/programmer/dao/TeacherDao.java

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package com.ischoolbar.programmer.dao;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;

import com.ischoolbar.programmer.model.Page;
import com.ischoolbar.programmer.model.Student;
import com.ischoolbar.programmer.model.Teacher;
import com.ischoolbar.programmer.util.StringUtil;

/**
 * 
 * 公众号：springmeng
 *教师表数据库操作
 */
public class TeacherDao extends BaseDao {
	public boolean addTeacher(Teacher teacher){
		String sql = "insert into s_teacher values(null,'"+teacher.getSn()+"','"+teacher.getName()+"'";
		sql += ",'" + teacher.getPassword() + "'," + teacher.getClazzId();
		sql += ",'" + teacher.getSex() + "','" + teacher.getMobile() + "'";
		sql += ",'" + teacher.getQq() + "',null)";
		return update(sql);
	}
	public boolean editTeacher(Teacher teacher) {
		// TODO Auto-generated method stub
		String sql = "update s_teacher set name = '"+teacher.getName()+"'";
		sql += ",sex = '" + teacher.getSex() + "'";
		sql += ",mobile = '" + teacher.getMobile() + "'";
		sql += ",qq = '" + teacher.getQq() + "'";
		sql += ",clazz_id = " + teacher.getClazzId();
		sql += " where id = " + teacher.getId();
		return update(sql);
	}
	public boolean setTeacherPhoto(Teacher teacher) {
		// TODO Auto-generated method stub
		String sql = "update s_teacher set photo = ? where id = ?";
		Connection connection = getConnection();
		try {
			PreparedStatement prepareStatement = connection.prepareStatement(sql);
			prepareStatement.setBinaryStream(1, teacher.getPhoto());
			prepareStatement.setInt(2, teacher.getId());
			return prepareStatement.executeUpdate() > 0;
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return update(sql);
	}
	public boolean deleteTeacher(String ids) {
		// TODO Auto-generated method stub
		String sql = "delete from s_teacher where id in("+ids+")";
		return update(sql);
	}
	public Teacher getTeacher(int id){
		String sql = "select * from s_teacher where id = " + id;
		Teacher teacher = null;