【Java11 新特性】 HttpClient 使用

• 简介
• 同步
• 异步
• 结果

• HTTP 客户端是在 Java 11 中添加的。它可用于通过网络请求 HTTP 资源。它支持 HTTP/1.1和HTTP/2，包括同步和异步编程模型，将请求和响应主体作为反应流处理，并遵循熟悉的构建器模式。

• 代码

public static void main(String[] args) {
        
        // HttpClient client = HttpClient.newBuilder()
        //      .version(Version.HTTP_2)
        //      .followRedirects(Redirect.SAME_PROTOCOL)
        //      .proxy(ProxySelector.of(new InetSocketAddress("www-proxy.com", 8080)))
        //      .authenticator(Authenticator.getDefault())
        //      .build();
        
//        HttpRequest request = HttpRequest.newBuilder()
//                .uri(URI.create("http://openjdk.java.net/"))
//                .timeout(Duration.ofMinutes(1))
//                .header("Content-Type", "application/json")
//                .POST(HttpRequest.BodyPublishers.ofFile(Paths.get("file.json")))
//                .build();
		// 静态方法获取客户端HttpClient
        HttpClient httpClient = HttpClient.newHttpClient();
        // 静态方法创建
        HttpRequest request = HttpRequest.newBuilder(URI.create("http://xxx.xxx.xx.xx:xxxx/api/customer/v1/info/find_customer_info_list")).build();
        // 生成BodyHandler
        BodyHandler responseBodyHandler = HttpResponse.BodyHandlers.ofString();
        // 发送 得到HttpResponse
        try {
            HttpResponse response = httpClient.send(request, responseBodyHandler);
            String body = response.body();
            System.out.println(body);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

• 代码

public static void main(String[] args) {
        // 获取客户端HttpClient
        HttpClient httpClient = HttpClient.newHttpClient();
        // 生成HttpRequest
        HttpRequest request = HttpRequest.newBuilder(URI.create("http://xxx.xxx.xx.xx:xxxx/api/customer/v1/info/find_customer_info_list")).build();
        // 生成BodyHandler
        BodyHandler responseBodyHandler = HttpResponse.BodyHandlers.ofString();
        // 发送 得到HttpResponse
        try {
            CompletableFuture> responseAsync = httpClient.sendAsync(request, responseBodyHandler);
            HttpResponse response = responseAsync.get();
            String body = response.body();
            int i = response.statusCode();
            System.out.println(body);
            System.out.println("status: "+i);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

{
  "code": 0,
  "data": [
    {
      "id": 3,
      "sender": "郭总",
      "phone": "133******89",
      "consignee": "郭林枝",
      "customer_name": "***科技开发有限公司",
      "delivery_address": "******园区同业路5号 内蒙古林科技 院内",
      "bank_name": "包头市支行",
      "bank_account": "1234567899874632120",
      "tax_number": "9136********492L"
    },
    {
      "id": 1,
      "sender": "陈工",
      "phone": "18******90",
      "consignee": "陈总",
      "customer_name": "****傲表计有限公司",
      "delivery_address": "******门基地",
      "bank_name": "杭州银行蒋村支行",
      "bank_account": "3301**************09",
      "tax_number": "9135*********4801L"
    }
  ],
  "msg": null
}
status: 200