java实训内容_java实训心得

撰写TextStudentDaoImpl
package qingjiabo.student.text;

import org.junit.Test;
import qingjiabo.student.bean.Student;
import qingjiabo.student.dao.StudentDao;
import qingjiabo.student.dao.impl.StudentDaoImpl;

import java.util.Iterator;
import java.util.List;
import java.util.Vector;

public class TextStudentDaoImpl {

@Test
public void testInser(){

// 创建学生对象
Student student = new Student()
; //设置学生对象属性
student.setId(“18101001”);
student.setClassname(“卿加波”);
student.setSex(“男”);
student.setAge(20);
student.setDepartment(“软件技术2班”);
student.setTelephone(“15881740794”);

    StudentDao dao = new StudentDaoImpl();
    int count = dao.insert(student);
    if (count >0){
        System.out.println("恭喜！插入成功！");
    }else {
        System.out.println("遗憾，插入失败！");
    }
}
@Test
public void testDeleteById(){
    StudentDao dao = new StudentDaoImpl();
    String id = "18101001";
    int count = dao.deleteById(id);
    if (count > 0){
        System.out.println("恭喜，学生记录删除成功！");
    }else {
        System.out.println("遗憾,学生记录删除失败");
    }
}
@Test
public void testDeleteByClass(){
    StudentDao dao = new StudentDaoImpl();
    String classname = "11英教1班";
    //调用学生数据访问对象的按班级删除的方法
    int count = dao.deleteByClass(classname);
    if (count > 0 ){
        System.out.println("恭喜，["+ classname+"]学生记录更新成功！");
    }else {
        System.out.println("遗憾，["+classname+"学生记录更新失败！]");
        
    }
}


@Test
public  void testFindByNama(){
    String name = "李文";
   
    List<Student> students  = dao.findByName(name);
    if (students.size()> 0){
        for (Student student: students){
            System.out.println(student);
        }
    }else {
        System.out.println("温馨提示，查无此人");
    }
}

@Test
public  void testFindByNama(){
    String name = "李";
    List<Student> students  = dao.findByName(name);
    if (students.size()> 0){
        for (Student student: students){
            System.out.println(student);
        }
    }else {
        System.out.println("温馨提示，查无此人");
    }
}

@Test
public void  textFindAll(){
    List<Student> students  = dao.findAll();
    for (Student student :  students){
        System.out.println(student);
    }
}

// @Test
// public void textFindRowsBySex(){

// Vector rows = dao.findRowsBySex();
// for (object row : rows){

// System.out.println(rows);
// }
// }

@Test
public void textFindRowsBySex(){
    //调用学生数据访问对象的按性别统计人数的方法
    Vector rows  =  dao.findRowsBySex();
    //获取向量迭代器
    Iterator iterator = rows.iterator();
    //遍历迭代器
    while (iterator.hasNext()){
        System.out.println(iterator.next());
    }
            
}

}

解决textStudentDaoImpl测试类的报错

在UserDao接口中添加防止重名用户属性

但随即UserDaoIpml报错

添加抽象方法isUsernameExisted后

报错消失

撰写TextUserDaoImpl

package qingjiabo.student.text;

import org.junit.Test;
import qingjiabo.student.bean.User;
import qingjiabo.student.dao.UserDao;
import qingjiabo.student.dao.impl.UserDaoImpl;

import java.util.Date;

public class TextUserDaoImpl {

//定义数据访问对象
UserDao dao = new UserDaoImpl();
@Test
public void textFindById(){

//调用用户数据访问对象的查找方法
User user =dao.findById(1);
//输出用户对象
System.out.println(user);

}

@Test
public void testLogin(){
    String username ,password;
    username  = "admin";
    password  = "12345";
    //调用用户数据访问对象登录方法
    User user  = dao.login(username, password);
    //判断是否登录成功
    if (user != null){
        System.out.println("恭喜！用户与密码正确，登录成功！");
        
    }else {
        System.out.println("遗憾，用户与密码错误，登录失败！");
    }
}

@Test
public void  testInsert(){
    //定义用户对象
    User user = new User();
    user.setUsername("吴彦祖");
    user.setPassword("34567");
    user.setTelephone("15823234590");
    user.setRegisterTime(new Date());
    //调用数据访问对象的插入方法
    int count  =  dao.insert(user);
    //判断
    if (count >0){
        System.out.println("恭喜，用户记录插入成功！");
        System.out.println(dao.findById(dao.findAll().size()));
        
    }else {
        System.out.println("遗憾，用户记录插入失败！");
    }
}

@Test
public void testIsUsernameExisted(){
    String username ="李刚";
    
    boolean result  =  dao.isUsernameExisted(username);
    if (result){
        System.out.println("温馨提示，["+username+"]已存在，不可用此名注册！");
    }else {
        System.out.println("温馨提示，["+username+"]不存在，可用此名注册！");
    }
}

}

编写服务类接口