1.获取连接中的参数,使用倒的关键词@PathVariable

@RestController
public class HelloController {@RequestMapping(value = "/hello/{id}",method = RequestMethod.GET)public String index(@PathVariable("id") Integer id){return "id="+id;}}

启动项目访问，成功获取到id

也可以把id放在/hello前面

public class HelloController {@RequestMapping(value = "/{id}/hello",method = RequestMethod.GET)public String index(@PathVariable("id") Integer id){return "id="+id;}}

 

2.传统的问号(?id=110)传值，设置id可以不传默认值为0，使用倒的关键词@RequestParam

public class HelloController {@RequestMapping(value = "/hello",method = RequestMethod.GET)public String index(@RequestParam(value = "id" ,required = false, defaultValue = "0") Integer id){return "id="+id;}}

不传参数默认为0

传参数为获取到的参数