记录搭建ssm项目
搞java也快3年了,搭建一个ssm居然有点吃力。
参考链接:https://blog.csdn.net/gebitan505/article/details/44455235/
环境准备:jdk8、maven、idea
1、新建maven项目,增加web模块
2、集成spring
导入基本jar包:
<properties>
<java-version>1.8</java-version>
<spring-verion>4.3..RELEASE</spring-verion>
<mybatis-version>3.4.</mybatis-version>
</properties> <dependencies> <!-- spring -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${spring-verion}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring-verion}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring-verion}</version>
</dependency>
<dependency>
<groupId>org.springframework.batch</groupId>
<artifactId>spring-batch-infrastructure</artifactId>
<version>3.0..RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${spring-verion}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>${spring-verion}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>${spring-verion}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring-verion}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${spring-verion}</version>
</dependency> <!-- aop dependencies-->
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.8.</version>
</dependency>
<!-- bean validate -->
<dependency>
<groupId>javax.validation</groupId>
<artifactId>validation-api</artifactId>
<version>1.1..Final</version>
</dependency>
2、集成mybatis
spring的话什么也不写的话就只需要书写一下ApplicationContext.xml即可。所以直接准备与mybatis集成
导入jar:
<!-- mybatis -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>${mybatis-version}</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.</version>
</dependency>
<!-- mysql -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.</version>
</dependency>
然后写好简单的目录结构:
书写spring-mybatis的配置文件:
包含功能:spring的基本扫描,datascource的管理,sessionFactory的配置,transManage的配置,mybatis-mapper的扫描
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"> <!-- spring和mybatis进行整合。主要进行扫描、注入、配置数据库 --> <context:property-placeholder location="classpath:config/props/jdbc.properties" ignore-unresolvable="true"/> <!-- 扫描 -->
<context:component-scan base-package="com.testweb">
<!-- 避免重复扫描controller -->
<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller" />
</context:component-scan> <!-- 配置数据源 -->
<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName"><value>${jdbc.driverClassName}</value></property>
<property name="url"><value>${jdbc.url}</value></property>
<property name="username"><value>${jdbc.username}</value></property>
<property name="password"><value>${jdbc.password}</value></property>
</bean> <!-- session工厂 -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<!-- 自动扫描mapping.xml文件 -->
<property name="mapperLocations" value="classpath:com/testweb/dal/mapper/UserDOMapper.xml"></property>
</bean> <!-- 扫描mapper接口 -->
<!-- 使用tk.mybatis所以注释掉mybatis的
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.testweb.dal.mapper"/>
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
</bean>
-->
<bean class="tk.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.testweb.dal.mapper"/>
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
</bean> <!-- 事务管理 -->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"/>
</bean> </beans>
tk.mybatis是通用mapper,为了简化xml编写的一个第三方插件
<!-- tk.mybatis -->
<dependency>
<groupId>tk.mybatis</groupId>
<artifactId>mapper</artifactId>
<version>4.0.</version>
</dependency>
然后准备测试一下与spring与mybatis的整合是否成功
使用mybatis-generator进行实体的生成等。
依赖:
<!-- mybatis-generator -->
<dependency>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-core</artifactId>
<version>1.3.</version>
</dependency>
<!-- junit -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
测试用到junit所以干脆把junit也带过来。
测试使用junit与spring集成,需要spring-test包:
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${spring-verion}</version>
</dependency>
mybatis-generator.xml:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE generatorConfiguration
PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
"http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">
<generatorConfiguration>
<!--数据库驱动-->
<classPathEntry location="D:\idea\repository\mysql\mysql-connector-java\8.0.11\mysql-connector-java-8.0.11.jar"/>
<context id="DB2Tables" targetRuntime="MyBatis3">
<commentGenerator>
<property name="suppressDate" value="true"/>
<property name="suppressAllComments" value="true"/>
</commentGenerator>
<!--数据库链接地址账号密码-->
<jdbcConnection driverClass="com.mysql.cj.jdbc.Driver"
connectionURL="jdbc:mysql://localhost:3306/testweb?useSSL=false" userId="root" password="961012gz">
</jdbcConnection>
<javaTypeResolver>
<property name="forceBigDecimals" value="false"/>
</javaTypeResolver>
<!--生成Model类存放位置-->
<javaModelGenerator targetPackage="com.testweb.dal.model" targetProject="src/main/java">
<property name="enableSubPackages" value="true"/>
<property name="trimStrings" value="true"/>
</javaModelGenerator>
<!--生成映射文件存放位置-->
<sqlMapGenerator targetPackage="com.testweb.dal.mapper" targetProject="src/main/resources">
<property name="enableSubPackages" value="true"/>
</sqlMapGenerator>
<!--生成Dao类存放位置-->
<javaClientGenerator type="XMLMAPPER" targetPackage="com.testweb.dal.mapper" targetProject="src/main/java">
<property name="enableSubPackages" value="true"/>
</javaClientGenerator>
<!--生成对应表及类名-->
<table tableName="t_user" domainObjectName="UserDO" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false"></table>
</context>
</generatorConfiguration>
mybatis-generator为了idea运行配置插件:
<!-- mybatis逆向工程 -->
<plugin>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-maven-plugin</artifactId>
<version>1.3.</version>
<configuration>
<!--配置文件的位置-->
<configurationFile>src/main/resources/generatorConfig.xml</configurationFile>
<verbose>true</verbose>
<overwrite>true</overwrite>
</configuration>
</plugin>
测试类:
package build; import com.testweb.common.enums.UserLockStatusEnum;
import com.testweb.dal.mapper.UserDOMapper;
import com.testweb.dal.model.UserDO;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner; /**
* @author zhen
* @Date 2018/5/23 13:36
*/
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = {"classpath:config/spring/spring-mybatis.xml"})
public class TestMyBatis { @Autowired
private UserDOMapper userDOMapper; @Test
public void testAddUser(){
UserDO userDO = new UserDO();
userDO.setName("admin");
userDO.setPassword("");
userDO.setPhone("");
userDO.setStatus(UserLockStatusEnum.NORMAL.getCode());
int i = userDOMapper.insert(userDO);
System.out.println(i);
}
}
然后进行spring与mvc的耦合:
写spring-mvc的配置文件:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/tool http://www.springframework.org/schema/tool/spring-tool.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd"> <mvc:annotation-driven></mvc:annotation-driven>
<!-- 扫描Controller -->
<context:component-scan base-package="com.testweb.controller"></context:component-scan> <!-- 使用mvc:annotation-driven替代,它有默认配置
注解处理器适配器
<bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter"></bean>
注解处理器映射器
<bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping"></bean>
JSON转换器,支持@RequestBody与@ResponseBody
<bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
<property name="supportedMediaTypes">
<list>
<value>text/html;charset=UTF-</value>
</list>
</property>
</bean>
--> <!-- 视图解析器 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<!-- 前缀 -->
<property name="prefix" value="/WEB-INF/jsp/"/>
<!-- 后缀 -->
<property name="suffix" value=".jsp"/>
</bean> <!-- 文件上传 -->
<bean id="multipartResolver"
class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<!-- 上传文件大小上限,单位为字节(10MB) -->
<property name="maxUploadSize">
<value></value>
</property>
<!-- 请求的编码格式,必须和jSP的pageEncoding属性一致,以便正确读取表单的内容,默认为ISO-- -->
<property name="defaultEncoding">
<value>UTF-</value>
</property>
</bean> </beans>
对了,配置log4j
配置文件:
log4j.rootLogger=INFO,Console,File
#定义日志输出目的地为控制台
log4j.appender.Console=org.apache.log4j.ConsoleAppender
log4j.appender.Console.Target=System.out
#可以灵活地指定日志输出格式,下面一行是指定具体的格式
log4j.appender.Console.layout = org.apache.log4j.PatternLayout
log4j.appender.Console.layout.ConversionPattern=[%c] - %m%n #文件大小到达指定尺寸的时候产生一个新的文件
log4j.appender.File = org.apache.log4j.RollingFileAppender
#指定输出目录
log4j.appender.File.File = E:/logs/testweb/testweb.log
#定义文件最大大小
log4j.appender.File.MaxFileSize = 10MB
# 输出所以日志,如果换成DEBUG表示输出DEBUG以上级别日志
log4j.appender.File.Threshold = ALL
log4j.appender.File.layout = org.apache.log4j.PatternLayout
log4j.appender.File.layout.ConversionPattern =[%p] [%d{yyyy-MM-dd HH\:mm\:ss}][%c]%m%n
因为log4j的位置放在的不是默认的路径下,所以需要在web.xml中配置监听:
<!-- log4j 配置文件的位置-->
<context-param>
<param-name>log4jConfigLocation</param-name>
<param-value>classpath:config/props/log4j.properties</param-value>
</context-param> <listener>
<listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
</listener>
web.xml配置spring和springMVC:
<!-- 添加Spring监听 -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:config/spring/spring-mybatis.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener> <!-- Spring&mvc -->
<servlet>
<servlet-name>springMvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:config/spring/spring-mvc.xml</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>springMvc</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping> <!-- 编码过滤器 -->
<filter>
<filter-name>encodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
简单书写代码进行测试:
这里跑项目配合本地tomcat打包有点问题,直接使用jetty插件跑的:
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin> <!-- jetty 插件 -->
<plugin>
<groupId>org.eclipse.jetty</groupId>
<artifactId>jetty-maven-plugin</artifactId>
<version>9.3..M1</version>
</plugin>
其他jar包:
<!-- common -->
<!-- log -->
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.</version>
</dependency> <!-- json -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.8.</version>
</dependency>
整个pom.xml:
<?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.</modelVersion> <groupId>test-web</groupId>
<artifactId>test-web</artifactId>
<version>1.0-SNAPSHOT</version> <properties>
<java-version>1.8</java-version>
<spring-verion>4.3..RELEASE</spring-verion>
<mybatis-version>3.4.</mybatis-version>
</properties> <dependencies> <!-- spring -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${spring-verion}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring-verion}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring-verion}</version>
</dependency>
<dependency>
<groupId>org.springframework.batch</groupId>
<artifactId>spring-batch-infrastructure</artifactId>
<version>3.0..RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${spring-verion}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>${spring-verion}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>${spring-verion}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring-verion}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${spring-verion}</version>
</dependency> <!-- aop dependencies-->
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.8.</version>
</dependency>
<!-- bean validate -->
<dependency>
<groupId>javax.validation</groupId>
<artifactId>validation-api</artifactId>
<version>1.1..Final</version>
</dependency>
<!-- framework -->
<dependency>
<groupId>org.freemarker</groupId>
<artifactId>freemarker</artifactId>
<version>2.3.</version>
</dependency> <!-- mybatis -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>${mybatis-version}</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.</version>
</dependency>
<!-- mysql -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.</version>
</dependency> <!-- jsp、servlet、jstl-->
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>jsp-api</artifactId>
<version>2.1</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency> <!-- common -->
<!-- log -->
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.</version>
</dependency> <!-- json -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.8.</version>
</dependency> <!-- mybatis-generator -->
<dependency>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-core</artifactId>
<version>1.3.</version>
</dependency>
<!-- tk.mybatis -->
<dependency>
<groupId>tk.mybatis</groupId>
<artifactId>mapper</artifactId>
<version>4.0.</version>
</dependency> <!-- junit -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency> <!-- dom4j -->
<dependency>
<groupId>dom4j</groupId>
<artifactId>dom4j</artifactId>
<version>1.6.</version>
</dependency>
<!-- xpath -->
<dependency>
<groupId>jaxen</groupId>
<artifactId>jaxen</artifactId>
<version>1.1.</version>
</dependency> <!-- poi -->
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
<version>3.17</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>3.17</version>
</dependency> <!-- samba -->
<dependency>
<groupId>org.samba.jcifs</groupId>
<artifactId>jcifs</artifactId>
<version>1.2.</version>
</dependency> </dependencies> <build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin> <!-- jetty 插件 -->
<plugin>
<groupId>org.eclipse.jetty</groupId>
<artifactId>jetty-maven-plugin</artifactId>
<version>9.3..M1</version>
</plugin> <!-- mybatis逆向工程 -->
<plugin>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-maven-plugin</artifactId>
<version>1.3.</version>
<configuration>
<!--配置文件的位置-->
<configurationFile>src/main/resources/generatorConfig.xml</configurationFile>
<verbose>true</verbose>
<overwrite>true</overwrite>
</configuration>
</plugin>
</plugins>
</build> </project>
项目的代码:链接: https://pan.baidu.com/s/1iSLiu1RUMOsODHG149kGNw 密码: pjw4
记录搭建ssm项目的更多相关文章
- Maven 搭建 SSM 项目 (oracle)
简单谈一下maven搭建 ssm 项目 (使用数据库oracle,比 mysql 难,所以这里谈一下) 在创建maven 的web项目时,常常会缺了main/java , main/test 两个文件 ...
- 自动搭建ssm项目
手把手教你搭建ssm项目 注意,必须修改:包名.数据库名称.账号.密码 注意:必须配置好第一次,“引入后”才能配置第二次 第一步:打开idea选择创建maven项目 import java.io.*; ...
- 搭建SSM项目时报错(org.springframework.jdbc.CannotGetJdbcConnectionException)
严重: Servlet.service() for servlet [SpringMVC] in context with path [/ssm] threw exception [Request p ...
- 用idea搭建SSM项目,原来这么简单
目录 前言 软件环境 创建项目 数据库文件 配置文件 pom.xml log4j.properties jdbc.properties applicationContext.xml spring-mv ...
- 搭建ssm项目框架
[声明]转载注明链接,源码联系公众号:aandb7获取 [此处组织名groupId:com.dayuanit,可替换公司域名:项目名artifactid:...] 此处第二个配置文件选择maven安装 ...
- 模拟Springboot一:(零xml配置搭建SSM项目)
在spring官网文档中无论是spring的基础文档,还是spring-mvc文档都推荐我们使用javaconfig的方式来搭建项目 间接说明 (优点:javaconfig配置>xml配置) 其 ...
- Spring Boot2 系列教程(一)纯 Java 搭建 SSM 项目
在 Spring Boot 项目中,正常来说是不存在 XML 配置,这是因为 Spring Boot 不推荐使用 XML ,注意,并非不支持,Spring Boot 推荐开发者使用 Java 配置来搭 ...
- (05节)快速搭建SSM项目
1.1 快速搭建Web项目 注意点:name:archetypeCatalog,value:internal 原因:Intellij IDEA根据maven archetype的本质,执行mvn a ...
- 搭建SSM项目框架全过程及思考
1.前言 之前都是在现有框架下进行写代码或者总是看一些别人的架构,总会眼高手低.于是打算自己完整的走一遍流程,同时把所遇到的问题,思考的问题记下来,供大家参考.由于是工作年限不高,属于新手,不足之处还 ...
随机推荐
- JS实现悬浮导航的制作(附源码)--web前端
思想:导航在这里只有两种状态,一种是初始状态.一种是固定布局状态.实现悬浮导航其实就是通过Javascript脚本语言控制导航的两种状态,主要是对两种状态成立条件的判断,明确了这些,实现起来就不会太难 ...
- Python自学:第二章 数字 整数
>>>2 + 3 5 >>>3 - 2 1 >>>3 * 2 6 >>>3 / 2 1.5
- 机器学习基石(台湾大学 林轩田),Lecture 2: Learning to Answer Yes/No
上一节我们跟大家介绍了一个具体的机器学习的问题,以及它的内容的设定,我们今天要继续下去做什么呢?我们今天要教大家说到底我们怎么样可以有一个机器学习的演算法来解决我们上一次提到的,判断银行要不要给顾客信 ...
- You Don't Know JS: Async & Performance(第2章,Callbacks)
Chapter 2: Callbacks. Callbacks are by far the most common way that asynchrony in JS programs is exp ...
- CentOS6.8下实现配置配额
CentOS6.8下实现配置配额 Linux系统是支持多用户的,即允许多个用户同时使用linux系统,普通用户在/home/目录下均有自己的家目录,在默认状态下,各个用户可以在自己的家目录下任意创建文 ...
- python记录_day16 类的成员
一.变量 1.实例变量(又叫字段.属性) 创建对象时给对象赋值 形式: self.xxx = xxx 访问: 对象名.xxx 只能由对象访问 class Person: def __init_ ...
- vivado实现模16的计数器
`timescale 1ns / 1ps module ctr_mod_16( clk, rst_n, count ); input clk, rst_n; :] count; wire clk, r ...
- hdu-3671-tarjin/割点方案
http://acm.hdu.edu.cn/showproblem.php?pid=3671 给出一幅无向图,询问有多少种移除点对的方案使得剩下的连通分量个数大于1. 和上一题差不多的思路直接做n次t ...
- Spring JdbcTemplate 查询结果集Map反向生成Java实体(转)
原文地址:Spring JdbcTemplate 查询结果集Map反向生成Java实体 以前写过一篇文章吐槽过Spring JdbcTemplate的queryForList方法(参见:http:// ...
- spring cloud服务发现注解之@EnableDiscoveryClient与@EnableEurekaClient区别
在使用服务发现的时候有两种注解, 一种为@EnableDiscoveryClient, 一种为@EnableEurekaClient, 用法上基本一致,下文是从stackoverflow上面找到的对这 ...