项目创建:
选择创建一个springboot项目:
输入一下项目信息,一般就是maven的信息填一下:
选择spring web starter:
然后finish就OK了。
编码:
演示的功能就是提供一个计数器功能,可以初始化计数器,修改计数器,查询计数器当前值。没有使用数据库,直接用一个单例类来模拟了,项目结构如下:
Count:
1 package com.me.redis.resouce.bean; 2 3 public class Count { 4 private int count; 5 6 public int getCount() { 7 return count; 8 } 9 10 public void setCount(int count) { 11 this.count = count; 12 } 13 }
ResourceController:
1 package com.me.redis.resouce.controller; 2 3 import com.me.redis.resouce.bean.Count; 4 import org.springframework.beans.factory.annotation.Autowired; 5 import org.springframework.web.bind.annotation.*; 6 import com.me.redis.resouce.service.ResourceService; 7 8 @RestController 9 public class ResourceController { 10 11 @Autowired 12 ResourceService resourceService; 13 14 @RequestMapping(value = "/me/count", method = RequestMethod.PUT) 15 @ResponseBody 16 public String initCount(@RequestBody Count count){ 17 resourceService.initCount(count); 18 return "init count success"; 19 } 20 21 @RequestMapping(value = "/me/count", method = RequestMethod.POST) 22 @ResponseBody 23 public String modifyCount(@RequestBody Count count){ 24 resourceService.addCount(count); 25 return "modify count success"; 26 } 27 28 @RequestMapping(value = "/me/count", method = RequestMethod.GET) 29 @ResponseBody 30 public Count getCount() 31 { 32 return resourceService.getCount(); 33 } 34 }
ResourceService:
1 package com.me.redis.resouce.service; 2 3 import com.me.redis.resouce.bean.Count; 4 import com.me.redis.resouce.manager.ResourceManager; 5 import org.springframework.stereotype.Service; 6 7 @Service 8 public class ResourceService { 9 public void addCount(Count count){ 10 if (count != null){ 11 ResourceManager.getInstance().addCount(count.getCount()); 12 } 13 } 14 15 public void minusCount(Count count){ 16 if (count != null) { 17 ResourceManager.getInstance().minusCount(count.getCount()); 18 } 19 } 20 21 public Count getCount() 22 { 23 Count count = new Count(); 24 count.setCount(ResourceManager.getInstance().getCount()); 25 return count; 26 } 27 28 public void initCount(Count count){ 29 if (count != null) { 30 ResourceManager.getInstance().initCount(count.getCount()); 31 } 32 } 33 }
ResourceManager:
1 package com.me.redis.resouce.manager; 2 3 public class ResourceManager { 4 private int count = 0; 5 6 private static ResourceManager instance = new ResourceManager(); 7 8 private ResourceManager(){} 9 10 public static ResourceManager getInstance(){ 11 return instance; 12 } 13 14 public synchronized void addCount(int i){ 15 count = count + i; 16 } 17 18 public synchronized void minusCount(int i){ 19 count = count -i; 20 } 21 22 public int getCount(){ 23 return count; 24 } 25 26 public void initCount(int i){ 27 count = i; 28 } 29 }
ResouceApplication是idea自动生成的:
1 package com.me.redis.resouce; 2 3 import org.springframework.boot.SpringApplication; 4 import org.springframework.boot.autoconfigure.SpringBootApplication; 5 6 @SpringBootApplication 7 public class ResouceApplication { 8 9 public static void main(String[] args) { 10 SpringApplication.run(ResouceApplication.class, args); 11 } 12 13 }
代码就是这样,注意几个注解的作用就行了。
启动服务:
在ResourceApplication类上右键启动:
服务启动正常:
测试:
服务提供了三个接口:
URL都是:/me/count 只是分PUT、POST和GET,其中PUT用于初始化,POST用于修改(这里修改是累加),GET用于查询。
下面使用POSTMan进行测试:
查询接口,服务启动,count默认就是0:
初始化:
再次使用查询接口:
修改接口:
修改后查询:
加一个负数试试:
查询:
OK,使用SpringBoot开发restful风格的接口完成。
原文地址:https://www.cnblogs.com/wuyizuokan/p/11117294.html
时间: 2024-10-07 16:38:16