一文教会你 Spring Boot中的热部署与单元测试（简单易懂，附源码实战）

<?xml version="1.0" encoding="UTF-8"?>
-<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://maven.apache.org/POM/4.0.0">
<modelVersion>4.0.0</modelVersion>
-<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.8.RELEASE</version>
<relativePath/>
<!-- lookup parent from repository -->
</parent>
<groupId>com.ch</groupId>
<artifactId>ch9_1</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>ch9_1</name>
<description>Demo project for Spring Boot</description>
-<properties>
<java.version>11</java.version>
</properties>
-<dependencies>
-<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
-<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
</dependency>
-<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.45</version>
<!-- MySQL8.x时，请使用8.x的连接器 -->
</dependency>
<!-- MyBatis-Spring，Spring Boot应用整合MyBatis框架的核心依赖配置 -->
-<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>2.1.0</version>
</dependency>
-<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
-<build>
-<plugins>
-<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>

package com.ch.ch9_1;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class TestDevToolsController {
  @RequestMapping("/testDevTools")
  public String testDevTools() {
    return "test DevTools 222";
  }
}

package com.ch.ch9_2.entity;
import java.io.Serializable;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;
import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
@Entity
@Table(name = "student_table")
/**解决No serializer found for class org.hibernate.proxy.pojo.bytebuddy.ByteBuddyInterceptor异常*/
@JsonIgnoreProperties(value = {"hibernateLazyInitializer"})
public class Student implements Serializable{
  private static final long serialVersionUID = 1L;
  @Id
  @GeneratedValue(strategy = GenerationType.IDENTITY)
  private int id;//主键
  private String sno;
  private String sname;
  private String ssex;
  public Student() {
    super();
  }
  public Student(int id, String sno, String sname, String ssex) {
    super();
    this.id = id;
    this.sno = sno;
    this.sname = sname;
    this.ssex = ssex;
  }
  public int getId() {
    return id;
  }
  public void setId(int id) {
    this.id = id;
  }
  public String getSno() {
    return sno;
  }
  public void setSno(String sno) {
    this.sno = sno;
  }
  public String getSname() {
    return sname;
  }
  public void setSname(String sname) {
    this.sname = sname;
  }
  public String getSsex() {
    return ssex;
  }
  public void setSsex(String ssex) {
    this.ssex = ssex;
  }
}

package com.ch.ch9_2.repository;
import org.springframework.data.jpa.repository.JpaRepository;
import com.ch.ch9_2.entity.Student;
public interface StudentRepository extends JpaRepository<Student, Integer>{
}

package com.ch.ch9_2.controller;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import com.ch.ch9_2.entity.Student;
import com.ch.ch9_2.repository.StudentRepository;
@RestController
@RequestMapping("/student")
public class StudentController {
  @Autowired
  private StudentRepository studentRepository;
  /**
   * 保存学生信息
   */
  @PostMapping("/save")
  public String save(@RequestBody Student student) {
    studentRepository.save(student);
    return "success";
  }
  /**
   * 根据id查询学生信息
   */
  @GetMapping("/getOne/{id}")
  public Student getOne(@PathVariable("id") int id){
    return studentRepository.getOne(id);
  }
}