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<dependency> <groupId>com.alibaba</groupId> <artifactId>fastjson</artifactId> <version>1.2.3</version></dependency><dependency> <groupId>com.colobu</groupId> <artif

<dependency> <groupId>com.alibaba</groupId> <artifactId>fastjson</artifactId> <version>1.2.3</version></dependency><dependency> <groupId>com.colobu</groupId> <artif

JSON数据{ "id": 110, "name": "李会长", "age": 24}语法注意：外面由{}括起来数据以"键：值"对的形式出现（其中键多以字符串形式出现，值可取字符串，数值，甚至其他json对象）每两个"键：值"对以逗号分隔（最后一个"键：值"对省略逗号)参数值如果是string类型，就必须加引号，如果是数字类型，引号可加可不加...

//存在编码器依赖 耦合中的体现DriverManager.registerDriver(new com.mysql.jdbc.Driver());//编译器不依赖,运行期才依赖Class.forname("com.mysql.jdbc.Driver");

Spring相关API获得Bean实例public class UserTest { @Test public void testSave() throws Exception { ApplicationContext applicationContext = new ClassPathXmlApplicationContext("applicationContext.xml"); UserDao userDao = (UserDao) applicationContext.getBean("

Spring核心配置文件<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://www.springframework.org/schema/beanshttp://www.springf

Spring开发基本坐标<dependencies> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>5.1.5.RELEASE</version> </dependency> <dependency> <g

properties 文件jdbc.driver=com.mysql.jdbc.Driverjdbc.url=jdbc:mysql://127.0.0.1:3306/spring_db?characterEncoding=UTF-8&useSSL=falsejdbc.username=rootjdbc.password=root

Mybatis 测试代码@Testpublic void testFindAll() throws Exception { // 加载核心配置文件 InputStream is = Resources.getResourceAsStream("SqlMapConfig.xml"); // 获取SqlSessionFactory工厂对象 SqlSessionFactory sqlSessionFactory = newSqlSessionFactoryBuilder().build(is); /

MyBatis 核心配置文件<?xml version="1.0" encoding="UTF-8" ?><!DOCTYPE configurationPUBLIC "-//mybatis.org//DTD Config 3.0//EN""http://mybatis.org/dtd/mybatis-3-config.dtd"><configuration> <!--环境配置--> <environments default="mysql"

Mybatis 映射配置文件<?xml version="1.0" encoding="UTF-8" ?><!DOCTYPE mapperPUBLIC "-//mybatis.org//DTD Mapper 3.0//EN""http://mybatis.org/dtd/mybatis-3-mapper.dtd"><mapper namespace="UserMapper"> <!--查询所有--> <select id="findAll"

Mybatismaven工程 依赖(MySQL驱动、mybatis、junit)<!--指定编码和版本--><properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <maven.compiler.encoding>UTF-8</maven.compiler.encoding> <java.version>1.1