RESTful快速开发

简化前

dart 复制代码

package com.baidu.controller;

import com.baidu.domain.User;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.*;

@Controller
public class BookController {

    @RequestMapping(value = "/books", method = RequestMethod.POST)
    @ResponseBody
    public String save() {
        System.out.println("user save... ");
        return "{'module':'user save'}";
    }

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


    @RequestMapping(value = "/books", method = RequestMethod.PUT)
    @ResponseBody
    public String update(@RequestBody User user) {
        System.out.println("user update ... " + user);
        return "{'module':'user update'}";
    }


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

    @RequestMapping(value = "/books",method = RequestMethod.GET)
    @ResponseBody
    public String getAll() {
        System.out.println("user getAll ... ");
        return "{'module':'user getAll'}";
    }


}

先把共有路径提取出来

dart 复制代码

package com.baidu.controller;
import com.baidu.domain.User;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.*;
@Controller
@RequestMapping("/books")
public class BookController {

    @RequestMapping( method = RequestMethod.POST)
    @ResponseBody
    public String save() {
        System.out.println("user save... ");
        return "{'module':'user save'}";
    }

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


    @RequestMapping( method = RequestMethod.PUT)
    @ResponseBody
    public String update(@RequestBody User user) {
        System.out.println("user update ... " + user);
        return "{'module':'user update'}";
    }


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

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


}

提取@ResponseBody

dart 复制代码

package com.baidu.controller;
import com.baidu.domain.User;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.*;
@Controller
@RequestMapping("/books")
@ResponseBody
public class BookController {

    @RequestMapping( method = RequestMethod.POST)
    
    public String save() {
        System.out.println("user save... ");
        return "{'module':'user save'}";
    }

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


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


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

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


}

合并@Controller和@ResponseBody为@RestController

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

dart 复制代码

package com.baidu.controller;
import com.baidu.domain.User;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.*;


@RestController
@RequestMapping("/books")

public class BookController {


    @PostMapping
    public String save() {
        System.out.println("user save... ");
        return "{'module':'user save'}";
    }

    @DeleteMapping("/{id}")
    public String delete(@PathVariable Integer id) {
        System.out.println("user delete ... " + id);
        return "{'module':'user save'}";
    }


    @PutMapping
    public String update(@RequestBody User user) {
        System.out.println("user update ... " + user);
        return "{'module':'user update'}";
    }


    @GetMapping("/{id}")
    public String getById(@PathVariable Integer id) {
        System.out.println("user getById... " + id);
        return "{'module':'user getById'}";
    }

    @GetMapping
    public String getAll() {
        System.out.println("user getAll ... ");
        return "{'module':'user getAll'}";
    }


}