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README.md
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spring boot 实践学习案例，是 spring boot 初学者及核心技术巩固的最佳实践。 spring boot 实践学习案例，是 spring boot 初学者及核心技术巩固的最佳实践。
# 推荐 # 推荐
- [高性能 TCP/UDP 通信框架 HP-Socket](https://github.com/ldcsaa/HP-Socket) 由于工作原因，我发表原创博客也需要编写的时间。期间很多人私我问题，没有及时得到回复，这里说声抱歉。因此，建一个星球
- springcloud-learning-example
[spring cloud 实践学习案例](https://github.com/JeffLi1993/springcloud-learning-example)<br>
https://github.com/JeffLi1993/springcloud-learning-example
「泥瓦匠BYSocket」和朋友们讨论技术相关的话题，你一起来吧？
[泥瓦匠BYSocket 星球](https://t.zsxq.com/nMzjqbe "泥瓦匠BYSocket")
[泥瓦匠BYSocket 星球](https://t.zsxq.com/nMzjqbe "泥瓦匠BYSocket")
[泥瓦匠BYSocket 星球](https://t.zsxq.com/nMzjqbe "泥瓦匠BYSocket")
这个星球里面讲深入讨论 Java 、Java EE、Spring Boot 等框架技术及工作经验交流，分享一路技术走来的经验、教训。硬实力软实力、择业、职业规划等。
## 计划
Spring Boot 2.0 最大的热点肯定是 Web Flux。我这边也就开始操刀了...
Web Flux 努力进行中，尽情期待。唯一文章入口：[GitChat文章地址](http://gitbook.cn/gitchat/author/58968d35f2b669527d7a7c57 "gitchat")
## Spring For All 社区 ## Spring For All 社区
[Spring For All 社区](http://www.spring4all.com/ "spring4all")是新组建的关于 Spring 的纯技术交流社区（涵盖 Spring Boot、Spring Cloud 等内容），集诸多开源爱好者和技术大牛贡献内容和交流问题。我们不夸大、不装逼、做最纯粹的技术分享！！！ [Spring For All 社区](http://www.spring4all.com/ "spring4all")是新组建的关于 Spring 的纯技术交流社区（涵盖 Spring Boot、Spring Cloud 等内容），集诸多开源爱好者和技术大牛贡献内容和交流问题。我们不夸大、不装逼、做最纯粹的技术分享！！！
看看我们超强的群众基础，欢迎有兴趣的朋友加入QQ群分享与交流： 看看我们超强的群众基础，欢迎有兴趣的朋友加入QQ群分享与交流：[点击立即加入](http://www.spring4all.com/about "about")
Spring For All 社区 ⑪ 517395240 <br>
Spring For All 社区 ⑫ 498098401 <br>
博主微信：139-5868-6678
## 作者与学习乐园 ## 作者与学习乐园
源码地址：我的[GitHub地址](https://github.com/JeffLi1993 "GitHub")、[OSCGit地址](https://git.oschina.net/jeff1993/springboot-learning-example "OSCGit")<br> 源码地址：我的[GitHub地址](https://github.com/JeffLi1993 "GitHub")、[OSCGit地址](https://git.oschina.net/jeff1993/springboot-learning-example "OSCGit")<br>
@@ -23,7 +30,6 @@ Spring For All 社区 ⑫ 498098401 <br>
关注微信公众号【泥瓦匠BYSokcet】，及时得到技术文章推送<br> 关注微信公众号【泥瓦匠BYSokcet】，及时得到技术文章推送<br>
![公众号](http://www.bysocket.com/wp-content/uploads/2017/01/qrcode_for_gh_cd421e7eb7d6_430.jpg) ![公众号](http://www.bysocket.com/wp-content/uploads/2017/01/qrcode_for_gh_cd421e7eb7d6_430.jpg)
## 一、项目结构 ## 一、项目结构
「Spring Boot 那些事」：[传送门](http://www.bysocket.com/?page_id=1639 "Spring Boot 那些事")<br> 「Spring Boot 那些事」：[传送门](http://www.bysocket.com/?page_id=1639 "Spring Boot 那些事")<br>
@@ -74,56 +80,6 @@ Dubbo 服务提供者工程和 Dubbo 服务消费者工程 <br>
- spring-data-elasticsearch-query <br> - spring-data-elasticsearch-query <br>
spring-data-elasticsearch - 实战案例详解 spring-data-elasticsearch - 实战案例详解
## 二、项目 Quick Start 快速开发指南
#### a. 基本环境配置
在 MySQL 中，创建数据库 springbootdb：
````
CREATE DATABASE springbootdb;
````
创建表 city 城市 (因为我喜欢徒步)
````
DROP TABLE IF EXISTS `city`;
CREATE TABLE `city` (
`id` int(10) unsigned NOT NULL AUTO_INCREMENT COMMENT '城市编号',
`province_id` int(10) unsigned NOT NULL COMMENT '省份编号',
`city_name` varchar(25) DEFAULT NULL COMMENT '城市名称',
`description` varchar(25) DEFAULT NULL COMMENT '描述',
PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;
````
插入基础数据
````
INSERT city VALUES (1 ,1,'温岭市','BYSocket 的家在温岭。');
````
<br>
### 《 springboot-mybatis 工程 Quick Start 》
首先 check 基本环境配置完成，创建好数据库和表。
#### 1. 修改数据库配置
配置文件地址：springboot-mybatis/src/main/resources/application.properties
修改相应的数据源配置，比如账号、密码等
#### 2. 编译工程
在项目根目录 `springboot-learning-example`，运行 maven 指令：
````
mvn clean install
````
#### 3. 运行工程
右键运行工程包中 `org.spring.springboot.Application` Spring Boot 应用启动类的 main 函数，然后在浏览器访问：
`````
http://localhost:8080/api/city?cityName=温岭市
`````
可以看到返回的 JSON 结果：
````
{
"id": 1,
"provinceId": 1,
"cityName": "温岭市",
"description": "我的家在温岭。"
}
````
最后，<br/> 最后，<br/>
推荐
[《Spring Boot教程与Spring Cloud教程》](https://git.oschina.net/didispace/SpringBoot-Learning "Spring Boot教程与Spring Cloud教程")<br> [《Spring Boot教程与Spring Cloud教程》](https://git.oschina.net/didispace/SpringBoot-Learning "Spring Boot教程与Spring Cloud教程")<br>

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<?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>spring.boot.core</groupId>
<artifactId>chapter-2-spring-boot-quick-start</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>chapter-2-spring-boot-quick-start</name>
<description>第二章快速入门案例</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.0.M4</version>
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<!-- Web 依赖 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!-- 单元测试依赖 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<!-- Spring Data JPA 依赖 :: 数据持久层框架 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<!-- h2 数据源连接驱动 -->
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<scope>runtime</scope>
</dependency>
<!-- 模板引擎 Thymeleaf 依赖 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<!-- Spring Boot Maven 插件 -->
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<version>1.5.1.RELEASE</version>
</plugin>
</plugins>
</build>
<repositories>
<repository>
<id>spring-milestones</id>
<name>Spring Milestones</name>
<url>https://repo.spring.io/libs-milestone</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
</repository>
</repositories>
</project>

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chapter-2-spring-boot-quick-start/src/main/java/spring/boot/core/QuickStartApplication.java
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package spring.boot.core;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class QuickStartApplication {
public static void main(String[] args) {
SpringApplication.run(QuickStartApplication.class, args);
}
}

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chapter-2-spring-boot-quick-start/src/main/java/spring/boot/core/domain/User.java
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package spring.boot.core.domain;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import java.io.Serializable;
/**
* 用户实体类
*
* Created by bysocket on 21/07/2017.
*/
@Entity
public class User implements Serializable {
/**
* 编号
*/
@Id
@GeneratedValue
private Long id;
/**
* 名称
*/
private String name;
/**
* 年龄
*/
private Integer age;
/**
* 出生时间
*/
private String birthday;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Integer getAge() {
return age;
}
public void setAge(Integer age) {
this.age = age;
}
public String getBirthday() {
return birthday;
}
public void setBirthday(String birthday) {
this.birthday = birthday;
}
@Override
public String toString() {
return "User{" +
"id=" + id +
", name='" + name + '\'' +
", age=" + age +
", birthday=" + birthday +
'}';
}
}

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chapter-2-spring-boot-quick-start/src/main/java/spring/boot/core/domain/UserRepository.java
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package spring.boot.core.domain;
import org.springframework.data.jpa.repository.JpaRepository;
/**
* 用户持久层操作接口
*
* Created by bysocket on 21/07/2017.
*/
public interface UserRepository extends JpaRepository<User, Long> {
}

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chapter-2-spring-boot-quick-start/src/main/java/spring/boot/core/service/UserService.java
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package spring.boot.core.service;
import spring.boot.core.domain.User;
import java.util.List;
/**
* User 业务层接口
*
* Created by bysocket on 24/07/2017.
*/
public interface UserService {
List<User> findAll();
User insertByUser(User user);
User update(User user);
User delete(Long id);
User findById(Long id);
}

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chapter-2-spring-boot-quick-start/src/main/java/spring/boot/core/service/impl/UserServiceImpl.java
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package spring.boot.core.service.impl;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import spring.boot.core.domain.User;
import spring.boot.core.domain.UserRepository;
import spring.boot.core.service.UserService;
import java.util.List;
/**
* User 业务层实现
*
* Created by bysocket on 24/07/2017.
*/
@Service
public class UserServiceImpl implements UserService {
private static final Logger LOGGER = LoggerFactory.getLogger(UserServiceImpl.class);
@Autowired
UserRepository userRepository;
@Override
public List<User> findAll() {
return userRepository.findAll();
}
@Override
public User insertByUser(User user) {
LOGGER.info("新增用户：" + user.toString());
return userRepository.save(user);
}
@Override
public User update(User user) {
LOGGER.info("更新用户：" + user.toString());
return userRepository.save(user);
}
@Override
public User delete(Long id) {
User user = userRepository.findById(id).get();
userRepository.delete(user);
LOGGER.info("删除用户：" + user.toString());
return user;
}
@Override
public User findById(Long id) {
LOGGER.info("获取用户 ID ：" + id);
return userRepository.findById(id).get();
}
}

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package spring.boot.core.web;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import spring.boot.core.domain.User;
import spring.boot.core.service.UserService;
/**
* 用户控制层
*
* Created by bysocket on 24/07/2017.
*/
@Controller
@RequestMapping(value = "/users") // 通过这里配置使下面的映射都在 /users
public class UserController {
@Autowired
UserService userService; // 用户服务层
/**
* 获取用户列表
* 处理 "/users" 的 GET 请求，用来获取用户列表
* 通过 @RequestParam 传递参数，进一步实现条件查询或者分页查询
*/
@RequestMapping(method = RequestMethod.GET)
public String getUserList(ModelMap map) {
map.addAttribute("userList", userService.findAll());
return "userList";
}
/**
* 显示创建用户表单
*
*/
@RequestMapping(value = "/create", method = RequestMethod.GET)
public String createUserForm(ModelMap map) {
map.addAttribute("user", new User());
map.addAttribute("action", "create");
return "userForm";
}
/**
* 创建用户
* 处理 "/users" 的 POST 请求，用来获取用户列表
* 通过 @ModelAttribute 绑定参数，也通过 @RequestParam 从页面中传递参数
*/
@RequestMapping(value = "/create", method = RequestMethod.POST)
public String postUser(@ModelAttribute User user) {
userService.insertByUser(user);
return "redirect:/users/";
}
/**
* 显示需要更新用户表单
* 处理 "/users/{id}" 的 GET 请求，通过 URL 中的 id 值获取 User 信息
* URL 中的 id ，通过 @PathVariable 绑定参数
*/
@RequestMapping(value = "/update/{id}", method = RequestMethod.GET)
public String getUser(@PathVariable Long id, ModelMap map) {
map.addAttribute("user", userService.findById(id));
map.addAttribute("action", "update");
return "userForm";
}
/**
* 处理 "/users/{id}" 的 PUT 请求，用来更新 User 信息
*
*/
@RequestMapping(value = "/update", method = RequestMethod.POST)
public String putUser(@ModelAttribute User user) {
userService.update(user);
return "redirect:/users/";
}
/**
* 处理 "/users/{id}" 的 GET 请求，用来删除 User 信息
*/
@RequestMapping(value = "/delete/{id}", method = RequestMethod.GET)
public String deleteUser(@PathVariable Long id) {
userService.delete(id);
return "redirect:/users/";
}
}

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## 是否显示 SQL 语句
spring.jpa.show-sql=true

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/* contentDiv */
.contentDiv {padding:20px 60px;}

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<!DOCTYPE html>
<html lang="zh-CN">
<head>
<script type="text/javascript" th:src="@{https://cdn.bootcss.com/jquery/3.2.1/jquery.min.js}"></script>
<link th:href="@{https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css}" rel="stylesheet"/>
<link th:href="@{/css/default.css}" rel="stylesheet"/>
<link rel="icon" th:href="@{/images/favicon.ico}" type="image/x-icon"/>
<meta charset="UTF-8"/>
<title>用户管理</title>
</head>
<body>
<div class="contentDiv">
<h5> 《 Spring Boot 2.x 核心技术实战》第二章快速入门案例</h5>
<legend>
<strong>用户管理</strong>
</legend>
<form th:action="@{/users/{action}(action=${action})}" method="post" class="form-horizontal">
<input type="hidden" name="id" th:value="${user.id}"/>
<div class="form-group">
<label for="user_name" class="col-sm-2 control-label">名称</label>
<div class="col-xs-4">
<input type="text" class="form-control" id="user_name" name="name" th:value="${user.name}" />
</div>
</div>
<div class="form-group">
<label for="user_age" class="col-sm-2 control-label">年龄:</label>
<div class="col-xs-4">
<input type="text" class="form-control" id="user_age" name="age" th:value="${user.age}"/>
</div>
</div>
<div class="form-group">
<label for="user_birthday" class="col-sm-2 control-label">出生日期:</label>
<div class="col-xs-4">
<input type="date" class="form-control" id="user_birthday" name="birthday" th:value="${user.birthday}"/>
</div>
</div>
<div class="form-group">
<div class="col-sm-offset-2 col-sm-10">
<input class="btn btn-primary" type="submit" value="提交"/>&nbsp;&nbsp;
<input class="btn" type="button" value="返回" onclick="history.back()"/>
</div>
</div>
</form>
</div>
</body>
</html>

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<!DOCTYPE html>
<html lang="zh-CN">
<head>
<script type="text/javascript" th:src="@{https://cdn.bootcss.com/jquery/3.2.1/jquery.min.js}"></script>
<link th:href="@{https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css}" rel="stylesheet"/>
<link th:href="@{/css/default.css}" rel="stylesheet"/>
<link rel="icon" th:href="@{/images/favicon.ico}" type="image/x-icon"/>
<meta charset="UTF-8"/>
<title>用户列表</title>
</head>
<body>
<div class="contentDiv">
<h5> 《 Spring Boot 2.x 核心技术实战》第二章快速入门案例</h5>
<table class="table table-hover table-condensed">
<legend>
<strong>用户列表</strong>
</legend>
<thead>
<tr>
<th>用户编号</th>
<th>名称</th>
<th>年龄</th>
<th>出生时间</th>
<th>管理</th>
</tr>
</thead>
<tbody>
<tr th:each="user : ${userList}">
<th scope="row" th:text="${user.id}"></th>
<td><a th:href="@{/users/update/{userId}(userId=${user.id})}" th:text="${user.name}"></a></td>
<td th:text="${user.age}"></td>
<td th:text="${user.birthday}"></td>
<td><a class="btn btn-danger" th:href="@{/users/delete/{userId}(userId=${user.id})}">删除</a></td>
</tr>
</tbody>
</table>
<div><a class="btn btn-primary" href="/users/create" role="button">创建用户</a></div>
</div>
</body>
</html>

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chapter-2-spring-boot-quick-start/src/test/java/spring/boot/core/QuickStartApplicationTests.java
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package spring.boot.core;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;
@RunWith(SpringRunner.class)
@SpringBootTest
public class QuickStartApplicationTests {
@Test
public void contextLoads() {
}
}

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chapter-2-spring-boot-quick-start/src/test/java/spring/boot/core/domain/UserRepositoryTests.java
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package spring.boot.core.domain;
import org.junit.Assert;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;
@RunWith(SpringRunner.class)
@SpringBootTest
public class UserRepositoryTests {
@Autowired
UserRepository userRepository;
/**
* 单元测试 - 新增用户
*/
@Test
public void testSave() {
User user = new User();
user.setName("mumu");
user.setAge(2);
// user.setBirthday(new Date());
user = userRepository.save(user);
// 验证新增用户
Assert.assertNotNull(user.getId());
}
/**
* 单元测试 - 删除用户
*/
@Test
public void testDelete() {
// 新增两个用户数据
User mumu = new User();
mumu.setName("mumu");
mumu.setAge(2);
// mumu.setBirthday(new Date());
userRepository.save(mumu);
User zizi = new User();
zizi.setName("zizi");
zizi.setAge(25);
// zizi.setBirthday(new Date());
userRepository.save(zizi);
// 验证是否获取的用户列表大小是 2
Assert.assertEquals(2, userRepository.findAll().size());
// 删除用户
userRepository.delete(mumu);
// 验证是否获取的用户列表大小是 1
Assert.assertEquals(1, userRepository.findAll().size());
}
/**
* 单元测试 - 更新用户
*/
@Test
public void testUpdate() {
User user = new User();
user.setName("mumu");
user.setAge(2);
// user.setBirthday(new Date());
user = userRepository.save(user);
user.setName("zizi");
user = userRepository.save(user);
// 验证新增用户的编号是否为 1
Assert.assertNotNull(user.getId());
Assert.assertEquals("zizi", user.getName());
}
/**
* 单元测试 - 获取用户列表
*/
@Test
public void testFindAll() {
// 新增两个用户数据
User mumu = new User();
mumu.setName("mumu");
mumu.setAge(2);
// mumu.setBirthday(new Date());
userRepository.save(mumu);
User zizi = new User();
zizi.setName("zizi");
zizi.setAge(25);
// zizi.setBirthday(new Date());
userRepository.save(zizi);
// 验证是否获取的用户列表大小是 2
Assert.assertEquals(2, userRepository.findAll().size());
}
/**
* 单元测试 - 获取单个用户
*/
@Test
public void testFindById() {
// 新增用户
User mumu = new User();
mumu.setName("mumu");
mumu.setAge(2);
// mumu.setBirthday(new Date());
userRepository.save(mumu);
// 验证是否获取的用户是否是插入的用户
User expected = userRepository.findById(1L).get();
Assert.assertEquals("mumu", expected.getName());
}
}