如何使用HttpURLConnection发起一个GET请求呢?

下文笔者讲述使用HttpURLConnection发起GET请求的方法分享，如下所示

实现思路:
    connection.setRequestMethod("GET"); 
	即可定义请求模式为GET

例：
定义后台spring mvcGET接收页

@GetMapping("/list")
    public ResponseEntity list(@RequestParam(value = "name") String name) {
        return ResponseEntity.ok(users.stream().filter(i -> i.getName().equals(name)).collect(Collectors.toList()));
    }

 @Data
    @AllArgsConstructor
    public static class User {
        private String name;
        private int age;
    }

HttpURLConnnection之GET请求页面

HttpURLConnection connection = (HttpURLConnection) new URL("http://localhost:8080/list?name=java265").openConnection();
connection.setRequestMethod("GET");

//write header
connection.setRequestProperty("Content-Type", "application/json");

//set timeout
connection.setConnectTimeout(1000 * 5);
connection.setReadTimeout(1000 * 10);

//connect
connection.connect();

int responseCode = connection.getResponseCode();

log.info("response code : {}", responseCode);
// read response
try (BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()))) {
    String line;
    while ((line = reader.readLine()) != null) {
        System.out.println(line);
    }
} finally {
    connection.disconnect();
}