mybits框架项目搭建

原創 luckcircle 2018-08-22 05:45

之前使用SpringMVC框架做了一个项目，后来项目中需要将数据持久化，就选择了使用mybits 3.4.1+mysql 5.7这样的架构，mybits比较灵活，入门比较简单，虽然写的SQL语句比较多，但做一些小项目还是可以的，本人使用的是maven配置mybits。

先上传一张项目文件结构


第一步，在原有的项目中添加mybits和mysql驱动的依赖。

<dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.4.1</version>
</dependency>
<dependency>
	<groupId>mysql</groupId>
	<artifactId>mysql-connector-java</artifactId>
	<version>5.1.39</version>
</dependency>
添加好后可以选中项目右键maven->upadte project

第二步，在src/main/resources文件夹下创建数据库配置文件jdbc.properties

driver=com.mysql.jdbc.Driver
url=jdbc:mysql://localhost:3306/speech
username=root
password=yue960713
#\u5B9A\u4E49\u521D\u59CB\u8FDE\u63A5\u6570    
initialSize=0
#\u5B9A\u4E49\u6700\u5927\u8FDE\u63A5\u6570    
maxActive=20
#\u5B9A\u4E49\u6700\u5927\u7A7A\u95F2    
maxIdle=20
#\u5B9A\u4E49\u6700\u5C0F\u7A7A\u95F2    
minIdle=1
#\u5B9A\u4E49\u6700\u957F\u7B49\u5F85\u65F6\u95F4    
maxWait=60000


第三步，在src/main/resources文件夹下创建mybits配置文件mybits-config.xml

<?xml version="1.0" encoding="UTF-8" ?>  
<!DOCTYPE configuration  
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"  
"http://mybatis.org/dtd/mybatis-3-config.dtd">  
<!-- 这是根标签  -->  
<configuration>  
    <!-- 元素允许在主配置文件之外提供一个properties格式对应文件，从而使得主配置文件更加通用。这样对部署非常有用  -->  
    <!-- <properties resource="mysql.properties" /> -->  
    <!-- 设置别名，一定要放在properties下面  -->  
    <properties resource="jdbc.properties"></properties>
    <typeAliases>  
        <typeAlias alias="User" type="com.yueyibo.entity.User"  />  
    </typeAliases>  
    <!-- 配置数据源相关的信息  -->  
    <environments default="development">  
        <environment id="development">  
            <transactionManager type="JDBC" />  
            <dataSource type="POOLED">  
            <property name="driver" value="${driver}"/>  
             <property name="url" value="${url}"/>   
            <property name="username" value="${username}"/>   
            <property name="password" value="${password}"/>   
            <!--<property name="driver" value="${driver}" />  
                <property name="url" value="${url}" />  
                <property name="username" value="${username}" />  
                <property name="password" value="${password}" /> -->  
            </dataSource>  
        </environment>  
    </environments>  
    <!-- 列出映射文件 -->  
    <mappers>  
        <mapper resource="com/yueyibo/entity/User.xml" />  

    </mappers>  
</configuration>

第四步，创建映射实体User.java 

package com.yueyibo.entity;

public class User {
	private int id;
	private String account;
	private String username;
	private String password;
	private String token;
	private String appkey;
	private String appsecret;
	private String balance;
	public User(){
		
	}
	public int getId() {
		return id;
	}
	public void setId(int id) {
		this.id = id;
	}
	public String getAccount() {
		return account;
	}
	public void setAccount(String account) {
		this.account = account;
	}
	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 getToken() {
		return token;
	}
	public void setToken(String token) {
		this.token = token;
	}
	public String getAppkey() {
		return appkey;
	}
	public void setAppkey(String appkey) {
		this.appkey = appkey;
	}
	public String getAppsecret() {
		return appsecret;
	}
	public void setAppsecret(String appsecret) {
		this.appsecret = appsecret;
	}
	public String getBalance() {
		return balance;
	}
	public void setBalance(String balance) {
		this.balance = balance;
	}
	
}

第五步，创建实体类对应的映射文件User.xml

<?xml version="1.0" encoding="UTF-8" ?>  
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"  
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">  
 <mapper namespace="com.yueyibo.entity.UserMapper">  
   
     <!-- 查找 -->  
     <select id="findUser" parameterType="com.yueyibo.entity.LoginEntity" resultType="User">  
     select * from User where account =#{account} and password=#{password}  
     </select>  
     <select id="findUserByUsername" parameterType="java.lang.String" resultType="User">  
     select * from User where username =#{username}  
     </select>   
      <!-- 插入 -->    
      <!-- useGeneratedKeys设置为"true"表明要MyBatis获取由数据库自动生成的主键；keyProperty="id"指定把获取到的主键值注入到Employeer的id属性 -->   
    <insert id="addUser" parameterType="User"  
    useGeneratedKeys="true" keyProperty="id">    
        insert into User(id,account,username,password,token,appkey,appsecret,balance)   
        values(#{id},#{account},#{username},#{password},#{token},#{appkey},#{appsecret},#{balance})    
    </insert>    
      
     <!-- 删除  -->  
    <delete id="deleteUserById" parameterType="int">    
        delete from User where id = #{id}    
    </delete>    
      
    <!-- 修改 -->    
    <update id="updateUserById" parameterType="User">    
        update User set account = #{account},username= #{username},password = #{password}  
        ,token=#{token},appkey=#{appkey},appsecret=#{appsecret},balance=#{balance}  where id = #{id}    
    </update>    
      
 </mapper>


第六步，创建Dao类UserDao.java 

package com.yueyibo.Dao;

import java.io.Reader;

import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;

import com.yueyibo.entity.LoginEntity;
import com.yueyibo.entity.User;


public class UserDao {  
    private static SqlSessionFactory sqlSessionFactory;  
    private static Reader reader;  
    static {  
        try {  
            reader = Resources.getResourceAsReader("mybatis-config.xml");  
            sqlSessionFactory = new SqlSessionFactoryBuilder().build(reader);  
        } catch (Exception e) {  
            e.printStackTrace();  
        }  
    }  
  
    /** 
     * 查找 
     */  
    public static User findUserByLoginEntity(LoginEntity loginEntity) {  
        SqlSession session = null;  
        try {  
            session = sqlSessionFactory.openSession();  
            User user = (User) session.selectOne(  
                    "com.yueyibo.entity.UserMapper.findUser", loginEntity);  
            if (user == null)  {
                System.out.println("null");  
                return null;
            }
            else  {
            	System.out.println(user.getAccount()+user.getPassword()); 
            	return user;
            }
                 
        } finally {  
            session.close();  
        }  
    }  
    /** 
     * 增加 
     */  
    public static boolean addUser(User user){  
        SqlSession session = null;  
        try {  
            session = sqlSessionFactory.openSession();  
             //返回值是记录条数    
            int resultCount = session.insert("com.yueyibo.entity.UserMapper.addUser", user );    
            System.out.printf("当前插入的employeer_id :%d    当前插入数据库中条数:%d " , user.getId() ,resultCount);  //获取插入对象的id    
            System.out.println("");  
            session.commit() ;      
            if(resultCount>=1){
            	return true;
            }
            else{
            	return false;
            }
        } finally {  
            session.close();  
        }  
          
    }  
    /** 
     * 删除 
     *  
     */  
   public static void deleteUesrById(int id){  
        SqlSession session = null;  
        try {  
            session = sqlSessionFactory.openSession();  
             //返回值是记录条数    
             int resultCount=session.delete("com.yueyibo.entity.UserMappper.deleteUserById",id);   
              System.out.println("当前删除数据库中条数: "+resultCount);  //获取插入对象的id    
            session.commit() ;            
        } finally {  
            session.close();  
        }  
    }  
    /** 
     * 更改 
     */  
    
    public static void updateUser(User user){  
        SqlSession session = null;  
        try {  
            session = sqlSessionFactory.openSession();   
            session.update("com.yueyibo.entity.UserMapper.updateUser",user);      
            session.commit() ;            
        } finally {  
            session.close();  
        }  
          
    }  
    public static User findUserByUsername(String username) {  
        SqlSession session = null;  
        try {  
            session = sqlSessionFactory.openSession();  
            User user = (User) session.selectOne(  
                    "com.yueyibo.entity.UserMapper.findUserByUsername", username);  
            if (user == null)  {
                System.out.println("null");  
                return null;
            }
            else  {
            	System.out.println(user.getAccount()+user.getPassword()); 
            	return user;
            }
                 
        } finally {  
            session.close();  
        }  
    }  
}

以上就配置好了mybits，接下来写一个jsp页面验证一下，事先我已经在数据库中插入了一条记录用作验证


login.jsp代码如下登录成功则显示用户名和权限否则显示登陆失败

<%@ page language="java" contentType="text/html; charset=utf-8"
    pageEncoding="utf-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
	<form action="checkLogin" method="post">
		账号：<input type="text" name="account"/>
		密码：<input type="password" name="password"/>
		<input type="submit" value="提交"/>
	</form>
	
	<%  String LoginStatus=(String)session.getAttribute("LoginStatus");
		if("1".equals(LoginStatus)){
			String username=(String)session.getAttribute("username");
			String token=(String)session.getAttribute("token");
			out.print("<h1>"+username+"</h1>");
			out.print("<h1>"+token+"</h1>");
		}
		else if("0".equals(LoginStatus)){
			out.print("<h1>登陆失败<h1>");
		}
		
		%>
</body>
</html>

controller代码如下 

@Controller
public class AudioController {
	
	@RequestMapping(value = "/login")
	public String login(){
		return "login";
	} 
	//登录
	@RequestMapping(value = "/checkLogin", method=RequestMethod.POST)
	public String checkLogin(@RequestParam(value="account") String account,
			@RequestParam(value="password") String password,
			HttpServletRequest req,HttpServletResponse res){
		HttpSession session=req.getSession();
		LoginEntity loginEntity=new LoginEntity(account,password);
		User user=UserDao.findUserByLoginEntity(loginEntity);
		if(user==null){
			session.setAttribute("LoginStatus","0");
		}
		else{
			session.setAttribute("LoginStatus","1");
			session.setAttribute("username", user.getUsername());
			session.setAttribute("token", user.getToken());
		}
		return "forward:login";
	}
}


运行项目，在浏览器输入如下url将会出现以下画面





测试一下错误的登录账号



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