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1 Get请求数据
1.1 Controller
文件名MyController,内容为:
@RestController@RequestMapping("/homepage")publicclass MyController { @Autowired MyService myService; @GetMapping("/learnGet") public String learnGet(){ return myService.learnGet(); }}
1.2 Service
文件名MyService,内容为:
@Service@EnableSchedulingpublicclass MyService { public String learnGet(){ Long timeLong = System.currentTimeMillis(); SimpleDateFormat timeFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); //设置格式 String timeString = timeFormat.format(timeLong); return timeString; }}
1.3 Application
在application.properties配置:
# 设置端口号server.port=8888
1.4 Postman
配置Get,地址为:http://localhost:8888/homepage/returnTime 。
即可获得当前时间戳。
2 Post接收数据
2.1 Controller
文件名MyController,内容为:
@RestController@RequestMapping("/homepage")publicclass MyController { @Autowired MyService myService; @PostMapping("/postReceive") public Map<String, Object> postReceive(@RequestParam("number") int number, @RequestParam("name") String name) { return myService.postReceive(number, name); } @PostMapping("/postReceiveByMap") public Map<String, Object> postReceiveByMap(@RequestParam Map<String, Object> map) { System.out.println("map:" + map + "\n"); return myService.postReceiveByMap(map); }}
2.2 Service
文件名MyService,内容为:
@Service@EnableSchedulingpublicclass MyService { public Map<String, Object> postReceive(int number, String name){ Map<String, Object> res = new HashMap<>(); res.put("number", number); res.put("name", name); return res; } public Map<String, Object> postReceiveByMap(Map<String, Object> map){ int number = map.get("number") == null ? 0 : Integer.parseInt((String) map.get("number")); String name = map.get("name") == null ? "" : (String)map.get("name"); Map<String, Object> res = new HashMap<>(); res.put("number", number); res.put("name", name); System.out.println("map:" + map + "\n"); System.out.println("res:" + res + "\n"); return res; }
2.3 Application
在application.properties配置:
# 设置端口号server.port=8888
2.4 Postman
配置Get,地址为:http://localhost:8888/homepage/returnTime 。
即可获得输出。
3 Post发送数据
需要注意,RestTemplate在postForObject时,用MultiValueMap,不可使用HashMap。
3.1 Controller
文件名MyController,内容为:
@RestController@RequestMapping("/homepage")publicclass MyController { @Autowired MyService myService; @PostMapping("/postSend") public Map<String, Object> postSend() { return myService.postSend(); }}
3.2 Service
文件名MyService,内容为:
@Service@EnableSchedulingpublicclass MyService { @Resource private RestTemplate restTemplate; String URL = "http://localhost:8888/homepage/postReceiveByMap"; public Map<String, Object> postSend(){ Map<String, Object> sendData = new HashMap<>(); sendData.put("number", 3); sendData.put("name", "张三"); ResponseEntity<ResponseResult> responseData = restTemplate.postForEntity(URL, sendData, ResponseResult.class); Map<String, Object> returnData = new HashMap<>(); returnData.put("StatusCode:", responseData.getStatusCode()); returnData.put("Body:", responseData.getBody()); return returnData; }}
3.3 ResponseResult
publicclass ResponseResult { privateint number; private String name; public ResponseResult(){ } public int getNumber() { return number; } public void setNumber(int number) { this.number = number; } public String getName() { return name; } public void setName(String name) { this.name = name; } @Override public String toString() { return"ResponseResult [number=" + number + ",name=" + name + "]"; }}
3.4 Config
@Configurationpublicclass Config { @Bean public RestTemplate restTemplate(RestTemplateBuilder builder){ return builder.build(); }}
3.5 Application
在application.properties配置:
# 设置端口号server.port=8889
3.6 Postman
配置Post,地址为: http://localhost:8889/homepage/postSend
即可获得输出。
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