SpringMVC-RESTful快速开发

推荐先阅读Spring全家桶

@RestController //@Controller + ReponseBody
@RequestMapping("/books")
public class BookController {
// @RequestMapping(method = RequestMethod.POST)
@PostMapping
public String save(@RequestBody Book book){
System.out.println("book save..." + book);
return "{'module':'book save'}";
}

// @RequestMapping(value = "/{id}",method = RequestMethod.DELETE)
@DeleteMapping("/{id}")
public String delete(@PathVariable Integer id){
System.out.println("book delete..." + id);
return "{'module':'book delete'}";
}

// @RequestMapping(method = RequestMethod.PUT)
@PutMapping
public String update(@RequestBody Book book){
System.out.println("book update..." + book);
return "{'module':'book update'}";
}

// @RequestMapping(value = "/{id}",method = RequestMethod.GET)
@GetMapping("/{id}")
public String getById(@PathVariable Integer id){
System.out.println("book getById..." + id);
return "{'module':'book getById'}";
}

// @RequestMapping(method = RequestMethod.GET)
@GetMapping
public String getAll(){
System.out.println("book getAll...");
return "{'module':'book getAll'}";
}
}

知识点1:@RestController

名称 @RestController
类型 ==类注解==
位置 基于SpringMVC的RESTful开发控制器类定义上方
作用 设置当前控制器类为RESTful风格,
等同于@Controller与@ResponseBody两个注解组合功能

知识点2:@GetMapping @PostMapping @PutMapping @DeleteMapping

名称 @GetMapping @PostMapping @PutMapping @DeleteMapping
类型 ==方法注解==
位置 基于SpringMVC的RESTful开发控制器方法定义上方
作用 设置当前控制器方法请求访问路径与请求动作,每种对应一个请求动作,
例如@GetMapping对应GET请求
相关属性 value(默认):请求访问路径