//第一行写的是五种错别级别中的哪一种 是输出到console输出台 还是可以到文件LOGFILE

//五种错误： fatal(致命错误 程序员无法解决) > error(错误) > warn(警告) > info(普通信息) > debug(调试信息)

log4j.rootCategory=INFO, CONSOLE


//以下是关于输出到控制台的信息

log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender          //使用的是这个类
log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout    //输出
log4j.appender.CONSOLE.layout.ConversionPattern=- %m%n          //输出格式


//以下是关于输出到项目下面的信息

log4j.appender.LOGFILE=org.apache.log4j.FileAppender           //使用这个类
log4j.appender.LOGFILE.File=axis.log                      //输出的文件名称
log4j.appender.LOGFILE.Append=true        //是否开启了添加功能(就是往文件里面存)
log4j.appender.LOGFILE.layout=org.apache.log4j.PatternLayout
log4j.appender.LOGFILE.layout.ConversionPattern=%-4r [%t] %-5p %c %x - %m%n  //输出的格式

<select id="selById" resultType="com.bjsxt.pojo.People" parameterType="int">  //原来基础上加parametType属性 里面放的是你传进来数字的类型
 		select * from people where id=#{0}    //#{0} 就是把测试类里面的参数(属性就是parameterType的值)传进来
 	</select>

People p=session.selectOne("com.bjsxt.mapper.selById",1);  //传入查询id=1的值
System.out.println(p);  //输出结果

<?xml version="1.0" encoding="UTF-8"?>    
<Context>
  	<Resoure
  		driverClassName="com.mysql.jdbc.Driver"
  		url="jdbc:mysql://localhost:3306/eesy"
  		username="root"
  		password="njdxrjgc7777777."
		maxActive="50"  //运行的最大数字
		maxIdle="10"   //等待的最大数字
		name="test"
		auth="Container" //由tomcat自动启动
		maxWait="10000"  //等待最大实现
		type="java.sql.DataSoure"   //我去name找到数据库连接池的时候对象什么样子   
		
  	/>
</Context>

<!DOCTYPE configuration
  PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
  "http://mybatis.org/dtd/mybatis-3-config.dtd">

<configuration>    
   <!-- default引用environment的id 当前使用环境 -->
 	<environments default="default">  
 	   <!-- 声明使用的环境 -->
 		<environment id="default">
 		  <!--使用原生JDBC事务-->
 			<transactionManager type="JDBC"></transactionManager>
 			<dataSource type="POOLED">
 				<property name="driverClass" value="com.mysql.jdbc.Driver"/>
 				<property name="uri" value="jdbc:mysql://localhost:3306/ssm"/>
 				<property name="username" value="root"/>
 				<property name="password" value="njdxrjgc7777777."/>
 			</dataSource>
 		</environment>
 	</environments>
 </configuration>

<?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.bjsxt.FlowerMapper"> <!-- 实现类的全路径namespace -->
	<!-- 
		id:方法名
		parameterType:定义参数类型	
		resultType:返回值类型           如果返回值是list 在resultType中写List的泛型   因为mybatis对jdbc封装  一行一行读取数据
	
	 -->	
	<select id="selAll" resultType="com.bjsxt.pojo.Flower">
		select * from flower
	</select>

</mapper>

public class Test {
	public static void main(String[] args) throws IOException {
		
		//因为建造者模式的build需要一个字节流 我们需要将主配置文件导入
		InputStream is = Resources.getResourceAsStream("mybatis.xml");
		
		//使用工厂设计模式
			SqlSessionFactory  factory=new SqlSessionFactoryBuilder().build(is);  //build(Reader reader) 要用字节流
		
		//生产SqlSession
			SqlSession session=factory.openSession();
		
		//调用配置类
			List<Flower> list=session.selectList("com.bjsxt.FlowerMapper.setAll");	  //找的是xml的namespace全路径
			for(Flower flower:list)
			{
				System.out.println(flower.toString());
			}
		
		//关闭(不关的话和数据库还是长连接状态)
			session.close();
			
	}
}

<mappers>
 		<mapper resource="com/bjsxt/mapper/FlowerMapper.xml"></mapper>
 	</mappers>

CREATE TABLE `user` (
  `id` int(11) NOT NULL auto_increment,
  `username` varchar(32) NOT NULL COMMENT '用户名称',
  `birthday` datetime default NULL COMMENT '生日',
  `sex` char(1) default NULL COMMENT '性别',
  `address` varchar(256) default NULL COMMENT '地址',
  PRIMARY KEY  (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

insert  into `user`(`id`,`username`,`birthday`,`sex`,`address`) values (41,'老王','2018-02-27 17:47:08','男','北京'),(42,'小二王','2018-03-02 15:09:37','女','北京金燕龙'),(43,'小二王','2018-03-04 11:34:34','女','北京金燕龙'),(45,'传智播客','2018-03-04 12:04:06','男','北京金燕龙'),(46,'老王','2018-03-07 17:37:26','男','北京'),(48,'小马宝莉','2018-03-08 11:44:00','女','北京修正');

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.itheima</groupId>
    <artifactId>day01_easy_01mybatis</artifactId>
    <version>1.0-SNAPSHOT</version>

    <packaging>jar</packaging> <!--通过jar包-->

    <dependencies>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>    <!--通过Mybatis官网找到的框架 只需要更改版本号-->
            <version>3.4.5</version>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>    <!--需要mysql-->
            <version>5.1.6</version>
        </dependency>

        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>    <!--日志文件-->
            <version>1.2.12</version>
        </dependency>

        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>    <!--单元测试-->
            <version>4.10</version>
            <scope>test</scope>
        </dependency>
    </dependencies>

</project>

public interface IUserDao {
    List<User> findAll();   //接口写查询所有的方法
}

public class User implements Serializable {
    //和数据库保持一致
    private Integer id;
    private String username;
    private Date birthday;
    private String sex;
    private String address;

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public Date getBirthday() {
        return birthday;
    }

    public void setBirthday(Date birthday) {
        this.birthday = birthday;
    }

    public String getSex() {
        return sex;
    }

    public void setSex(String sex) {
        this.sex = sex;
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

    @Override
    public String toString() {
        return "User{" +
                "id=" + id +
                ", username='" + username + '\'' +
                ", birthday=" + birthday +
                ", sex='" + sex + '\'' +
                ", address='" + address + '\'' +
                '}';
    }
}

<?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">

<!--Mybatis的主配置文件-->
<configuration>
    <!--配置环境  default和id必须一致-->
    <environments default="mysql">
        <!--配置mysql环境-->
        <environment id="mysql">
            <!--配置事务的类型-->
            <transactionManager type="JDBC"></transactionManager>
            <!--配置数据源(连接池)-->
            <dataSource type="POOLED">
                <!--连接数据库的四个基本信息-->
                <property name="driver" value="com.mysql.jdbc.Driver"/>
                <property name="url" value="jdbc:mysql://localhost:3306/eesy"/>
                <property name="username" value="root"/>
                <property name="password" value="njdxrjgc7777777."/>
            </dataSource>
        </environment>
    </environments>

    <!--指定映射配置文件的位置 映射配置文件指的是每个dao独立的配置文件-->
    <mappers>
        <mapper resource="com/itheima/dao/IUserDao.xml"/>
    </mappers>

</configuration>

<?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.itheima.dao.IUserDao">
    <!--配置查询所有-->
    <select id="findAll">  
        select * from user;
    </select>
</mapper>

# Set root category priority to INFO and its only appender to CONSOLE.
#log4j.rootCategory=INFO, CONSOLE            debug   info   warn error fatal
log4j.rootCategory=debug, CONSOLE, LOGFILE

# Set the enterprise logger category to FATAL and its only appender to CONSOLE.
log4j.logger.org.apache.axis.enterprise=FATAL, CONSOLE

# CONSOLE is set to be a ConsoleAppender using a PatternLayout.
log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout
log4j.appender.CONSOLE.layout.ConversionPattern=%d{ISO8601} %-6r [%15.15t] %-5p %30.30c %x - %m\n

# LOGFILE is set to be a File appender using a PatternLayout.
log4j.appender.LOGFILE=org.apache.log4j.FileAppender
log4j.appender.LOGFILE.File=d:\axis.log
log4j.appender.LOGFILE.Append=true
log4j.appender.LOGFILE.layout=org.apache.log4j.PatternLayout
log4j.appender.LOGFILE.layout.ConversionPattern=%d{ISO8601} %-6r [%15.15t] %-5p %30.30c %x - %m\n

public class MybatisTest {
    public static void main(String[] args) throws IOException {
        //1.读取配置文件
            InputStream in= Resources.getResourceAsStream("SqlMapConfig.xml");  //读取我们的mybatis主配置文件

        //2.创建SqlSessionFactory工厂
            SqlSessionFactoryBuilder builder=new SqlSessionFactoryBuilder();
            SqlSessionFactory factory=builder.build(in);  //构建流(怎么解析我们不用管)

        //3.使用工厂生产SqlSession对象
            SqlSession session=factory.openSession();
        
		//4.使用SqlSession创建Dao接口的代理对象
            IUserDao userDao=session.getMapper(IUserDao.class);  //没有实现类 我们用代理对象去做
        
		//5.使用代理对象执行方法
            List<User> users = userDao.findAll();
            for (User user:users)
            {
                System.out.println(user);
            }

        //6.释放资源
            session.close();
            in.close();
    }
}

<select id="findAll" resultType="com.itheima.domain.User">   <!--我们要把结果封装到User才可以-->
       select * from user;
   </select>

//1.读取配置文件
         InputStream in= Resources.getResourceAsStream("SqlMapConfig.xml");  //读取我们的mybatis主配置文件

     //2.创建SqlSessionFactory工厂
         SqlSessionFactoryBuilder builder=new SqlSessionFactoryBuilder();
         SqlSessionFactory factory=builder.build(in);  //构建者模式

     //3.使用工厂生产SqlSession对象
         SqlSession session=factory.openSession();    //工厂模式

     //4.使用SqlSession创建Dao接口的代理对象
         IUserDao userDao=session.getMapper(IUserDao.class);  //没有实现类 我们用代理对象去做

     //5.使用代理对象执行方法
         List<User> users = userDao.findAll();
         for (User user:users)
         {
             System.out.println(user);
         }

     //6.释放资源
         session.close();
         in.close();

public interface IUserDao {
    @Select("select * from user")
    List<User> findAll();
}

<!--指定映射配置文件的位置 映射配置文件指的是每个dao独立的配置文件-->
    <!--如果使用注解来配置文件，此处应该用class属性指定被注解的dao全限定类名-->
    <mappers>
        <mapper class="com.itheima.dao.IUserDao"/>
    </mappers>

yum install gcc-c++

yum install -y pcre pcre-devel
yum install -y zlib-devel
yum install -y openssl openssl-devel

./configure \
--prefix=/usr/local/nginx \
--pid-path=/var/run/nginx/nginx.pid \
--lock-path=/var/lock/nginx.lock \
--error-log-path=/var/log/nginx/error.log \
--http-log-path=/var/log/nginx/access.log \
--with-http_gzip_static_module \
--http-client-body-temp-path=/var/temp/nginx/client \
--http-proxy-temp-path=/var/temp/nginx/proxy \
--http-fastcgi-temp-path=/var/temp/nginx/fastcgi \
--http-uwsgi-temp-path=/var/temp/nginx/uwsgi \
--http-scgi-temp-path=/var/temp/nginx/scgi

1. 启动Nginx   ./nginx

2. 查看进程     ps aux|grep nginx

3. 关闭Nginx    ./nginx -s stop  //  ./nginx -s quit

4. 重启Nginx   1.先关闭后启动 2.刷新配置文件 ./nginx -s reload

worker_processes  1;

events {
    worker_connections  1024;
}

http {
    include       mime.types;
    default_type  application/octet-stream;

  sendfile        on;
    
   keepalive_timeout  65;

server {
        listen       80; 
        server_name  localhost; 


        location / {	
            root   index;
            index  index.html index.htm; 
        }
        error_page   500 502 503 504  /50x.html;	
        location = /50x.html {
            root   html;
        }
    }

}

worker_processes  1;

events {
    worker_connections  1024;
}

http {
    include       mime.types;
    default_type  application/octet-stream;

  	sendfile on;
    
    keepalive_timeout  65;

	server {
        listen       81;          # 默认端口号码
        server_name  localhost;   # 写的是域名或者ip地址配置


        location / {	     
            root   index;	               # 默认访问资源的目录
            index  index.html index.htm;   # 默认访问资源名称 
        }

        error_page   500 502 503 504  /50x.html;	 # 错误页面
        location = /50x.html {
            root   html;
        }
    }

     server {
        listen       82;
        server_name  localhost; 

        location / {	
            root   regist;
            index  regist.html; 
        }

        error_page   500 502 503 504  /50x.html;	
        location = /50x.html {
            root   html;
        }
	
    }

其实就是刚才的静态资源配置多配置一个server{} 然后要多有一个端口(我一个是81/一个是82)
然后就可以通过IP地址+不同的端口就可以进行访问

server {
      listen       82;
      server_name  localhost; 

      location / {	
          root   regist;
          index  regist.html; 
      }

      error_page   500 502 503 504  /50x.html;	
      location = /50x.html {
          root   html;
      }
	
  }

	upstream tomcat-travel{
		server 192.168.209.128:8080;  # tomcat浏览器的地址配给nginx
}

1. 将server{}里面的root index注释掉
2. 在下面加 proxy_pass http://tomcat-travel;  # tomcat-tarvel可以随便起

1. 浏览器输入：server里面的server_name(一般是localhost 但是也可以通过绑定域名(hosts文件改))
2. 然后他这个网络internet会去找nginx代理主机(proxy_pass)
3. 代理主机就去找upstream里面的tomcat

mvn -v

<build>
    <plugins>
      <plugin>
        <groupId>org.apache.tomcat.maven</groupId>
        <artifactId>tomcat7-maven-plugin</artifactId>
        <version>2.2</version>
        <configuration>
          <port>9999</port>
          <uriEncoding>UTF-8</uriEncoding>
        </configuration>
      </plugin>
    </plugins>
  </build>

<plugin>
       <groupId>org.apache.maven.plugins</groupId>
       <artifactId>maven-compiler-plugin</artifactId>
       <configuration>
         <target>1.8</target>
         <source>1.8</source>
         <encoding>UTF-8</encoding>
       </configuration>
     </plugin>

public class Items {
    private Integer id;
    private String name;
    public Integer getId() {
        return id;
    }
    public void setId(Integer id) {
        this.id = id;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
}

<dependencies>
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>5.1.6</version>
        <scope>runtime</scope>
    </dependency>
    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>4.12</version>
    </dependency>
</dependencies>

public interface ItemsDao {
    public List<Items> findAll() throws Exception;
}

public class ItemsDaoImpl implements ItemsDao {
    public List<Items> findAll() throws Exception{

        List<Items> list=new ArrayList<Items>(); //去接结果
        Connection connection=null;
        PreparedStatement pst=null;
        ResultSet rs=null;
        try{
           //1.加载驱动类
                Class.forName("com.mysql.jdbc.Driver");
            //2.获取连接对象
			    connection=DriverManager.getConnection("jdbc:mysql:///maven","root","njdxrjgc7777777.");
           //3.获取真正操作数据的对象
                pst=connection.prepareCall("select * from items");
           //4.执行数据库操作
                rs = pst.executeQuery();
           //5.查询结果转成java的list集合
           while(rs.next()){
               Items items=new Items();
               items.setId(rs.getInt("id"));
               items.setName(rs.getString("name"));
               list.add(items);
           }

        } catch (Exception e){
            e.printStackTrace();
        }finally{
            connection.close();
            pst.close();
            rs.close();
        }

        return list;
    }
}

public class ItemsTest {
    @Test
    public void findAll() throws Exception {
        ItemsDao dao=new ItemsDaoImpl();   //面向接口编程
        List<Items> list=dao.findAll();  //得到结果给list集合
        for (Items items:list)
        { 
            System.out.println(items.getId());   //增强for循环输出结果
            System.out.println(items.getName());
        }

    }

}

<parent>
    <groupId>...</groupId>
    <artifactId>...</artifactId>
    <version>...</version>
    <relativePath>....</relativePath>    设定父工程的pom.xml文件位置[如果不指定，将从本地仓库/远程仓库查找该工程]
</parent>

<!--聚合其他模块-->
<modules>
    <module>../tlias-pojo</module>
    <module>../tlias-utils</module>
    <module>../tlias-web-management</module>
</modules>

driverClassName=com.mysql.jdbc.Driver
url=jdbc:mysql:///day23
username=root
password=njdxrjgc7777777.
initialSize=5
maxActive=10
maxWait=3000

host=127.0.0.1
port=6379
maxTotal=50
maxIdle=10

public interface ProvinceDao {
    public List<Province> findAll();
}

public class ProvinceDaoImpl implements ProvinceDao {
    //1.获取数据库连接池对象
    private  JdbcTemplate template=new JdbcTemplate(JDBCUtils.getDataSource());
    @Override
    public List<Province> findAll() {
        //1.定义sql
            String sql="select * from province";
        //2.执行sql
            List<Province> list=template.query(sql,new BeanPropertyRowMapper<Province>(Province.class));
        return list;
    }
}

public class Province {
    private int id;
    private String name;

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }
}

public interface ProvinceService {
    public List<Province> findAll();

    public String findAllJson() throws JsonProcessingException;

}

public class ProvinceServiceImpl implements ProvinceService {
    //面向接口编程
    private ProvinceDao dao=new ProvinceDaoImpl();

    @Override
    public List<Province> findAll() {
        //调用dao实现
        return dao.findAll();
    }

    //使用redis缓存
    @Override
    public String findAllJson() throws JsonProcessingException {
        //1.先从redis中查询数据
            //1.1先获取redis客户端连接
               Jedis jedis = JedisPoolUtils.getJedis();  //调用写好的数据池工具类
                   String province_json = jedis.get("province");  //获取key值为province

         //2.判断json数据是否为null
            if(province_json==null||province_json.length()==0)  //redis里面没有数据
            {
                //2.1从数据中查询
                    List<Province> ps = dao.findAll();
                //2.将list序列化为json
                     ObjectMapper mapper=new ObjectMapper();
                    province_json=mapper.writeValueAsString(ps);
                //2.3将json数据存入redis
                    jedis.set("province",province_json); //获取key值为province
                //2.4归还连接
                    jedis.close();
            }
        return province_json;
    }

}

@WebServlet("/provinceServlet")   //配置路径 名字改为小写
public class ProvinceServlet extends HttpServlet {
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
            //1.调用service
                 ProvinceService service=new ProvinceServiceImpl();
                     String json=service.findAllJson();
                           System.out.println(json);

            //3.响应结果
                response.setContentType("application/json;charset=utf-8");  //json中文乱码
                response.getWriter().write(json);  //直接响应给客户端
    }
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        this.doPost(request, response);
    }
}

/*
    1.加载配置文件
    2.配置连接池的参数
    3.提供获取连接的方法
 */
public class JedisPoolUtils {
    private static JedisPool jedisPool;
    static{
        //读取配置文件
            InputStream is=JedisPoolUtils.class.getClassLoader().getResourceAsStream("jedis.properties"); //使用类加载器
        //创建properties对象
            Properties pro=new Properties();
        //关联文件
        try {
            pro.load(is);
        } catch (IOException e) {
            e.printStackTrace();
        }
        //获取数据 设置到JedisPoolConfig中
            JedisPoolConfig config=new JedisPoolConfig();
            config.setMaxTotal(Integer.parseInt(pro.getProperty("maxTotal")));
            config.setMaxIdle(Integer.parseInt(pro.getProperty("maxIdle")));
         //初始化JedisPool
            jedisPool=new JedisPool(config,pro.getProperty("host"), Integer.parseInt(pro.getProperty("port")));
    }

    //获取连接的方法
    public static Jedis getJedis(){
        return jedisPool.getResource();
    }

}

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script src="js/jquery-3.3.1.min.js"></script>
    <script>
        $(function(){
            //发送ajax请求 加载所有省份数据
            $.get("provinceServlet",{},function (data) {
                //[{"id":1,"name":"北京"},{"id":2,"name":"上海"},{"id":3,"name":"广州"},{"id":4,"name":"陕西"}]
                //1.获取select
                    var province=$("#province");
                //2.遍历json数组
                    $(data).each(function () {
                        //3.创建<option>
                            var option="<option name='"+this.id+"'>"+this.name+"</option>";  //相当于<option name=‘1’>北京<option>需要动态变化  ‘’拼接字符串
                        //4.使用select的append追加option
                            province.append(option);
                    });
            });
        });
    </script>
</head>
<body>

<select id="province">
    <option>--请选择省份--</option>
</select>

</body>
</html>

//1.先从redis中查询数据
           //1.1先获取redis客户端连接
              Jedis jedis = JedisPoolUtils.getJedis();  //调用写好的数据池工具类
                  String province_json = jedis.get("province");  //获取key值为province

//2.判断json数据是否为null
           if(province_json==null||province_json.length()==0)  //redis里面没有数据
           {
               //2.1从数据中查询
                   List<Province> ps = dao.findAll();
               //2.将list序列化为json
                    ObjectMapper mapper=new ObjectMapper();    //调用jar里面的ObjectMapper类
                   province_json=mapper.writeValueAsString(ps);	 //调用方法直接转为json
               //2.3将json数据存入redis
                   jedis.set("province",province_json); //获取key值为province
               //2.4归还连接
                   jedis.close();
  			}