最近在学习springboot,因此记录下学习过程中一些小例子,防止以后忘记可以,可以随时复习一下。由于工作中使用的开发工具是eclipse,因此使用eclipse开发。
1.创建pom文件
4.0.0
com.huan.springboot
springboot_01_start
0.0.1-SNAPSHOT
jar
springboot_01_start
Spring Boote入门示例
org.springframework.boot
spring-boot-starter-parent
1.4.3.RELEASE
UTF-8
UTF-8
1.8
org.springframework.boot
spring-boot-starter-web
org.springframework.boot
spring-boot-starter-test
test
org.springframework.boot
spring-boot-maven-plugin
2.创建一个实体类
public class User {
private String username;
private String password;
private int age;
private Date birth;
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public Date getBirth() {
return birth;
}
public void setBirth(Date birth) {
this.birth = birth;
}
}
3.创建一个控制层
@RestController
@RequestMapping("user")
public class UserController {
@RequestMapping(value = "get/{id}", method = RequestMethod.GET)
public User getUser(@PathVariable("id") int age) {
User user = new User();
user.setAge(age);
user.setUsername("测试");
user.setBirth(new Date());
user.setPassword("123456");
return user;
}
@RequestMapping(value = "/del/{id}", method = RequestMethod.DELETE)
public String delete(@PathVariable("id") int age) {
return "delete" + age;
}
@RequestMapping(value = "/add", method = RequestMethod.POST)
public User add(User user) {
return user;
}
}
@RequestMapping("user")
public class UserController {
@RequestMapping(value = "get/{id}", method = RequestMethod.GET)
public User getUser(@PathVariable("id") int age) {
User user = new User();
user.setAge(age);
user.setUsername("测试");
user.setBirth(new Date());
user.setPassword("123456");
return user;
}
@RequestMapping(value = "/del/{id}", method = RequestMethod.DELETE)
public String delete(@PathVariable("id") int age) {
return "delete" + age;
}
@RequestMapping(value = "/add", method = RequestMethod.POST)
public User add(User user) {
return user;
}
}
4.启动springboot应用程序
@SpringBootApplication
@ComponentScan("com.springboot")
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}
5.启动应用程序
/**
* springboot 程序的启动入口
*
* @描述
* @作者 huan
*/
@SpringBootApplication
@ComponentScan(basePackages = { "com.huan.springboot" })
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}
注意:
1、@SpringBootApplication是一个组合注解,默认会扫描它所在的包以及子包,而我的controller不在它默认的子包下,因此需要加载@ComponentScan注解配置
2、@RestController也是一个组合注解,在此注解修饰的类下,它下方所有的方法都是以json的格式返回。
3、默认情况下不需要自己进行配置,springboot会帮我们进行自动配置,若有不符合的地方也是可以进行修改的。
4、程序启动的默认端口是8080,上下文路径是 /
5、开发工具可以使用
idea : 默认支持springboot插件
sts : spring 的一个集成eclipse的开发工具,也是可以开发springboot程序
eclipse : 需要安装一个插件(springsource-tool-suite-3.8.2.RELEASE-e4.5.2-updatesite.zip),且eclipse的版本需要>=4.5.2
进入springboot的官网,使用 https://start.spring.io/ 创建项目。