java常见注释整理

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1. @component

可以在实体类（pojo）上注释，等同于注入spring的bean对象

2.@PathVariable

url：localhost:8080/hello/666

@RequestMapping(value = "/hello/{id}" )

public String say(@PathVariable("id") String id){
    return id;
}

3.@RequstParam

url:localhost:8080/hello?id=666

@RequestMapping(value = "/hello" )
public String say(@RequestParam("id") String id){
    return id;
}