项目结构目录如下图
创建一个测试类 Http2Example01 代码如下
package http2.com.http2.example01;
import jdk.incubator.http.HttpClient;
import jdk.incubator.http.HttpRequest;
import jdk.incubator.http.HttpResponse;
import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
/** * @author:CrazyShaQiuShi * @email:3105334046@qq.com * @descript: * @version:1.0.0 */
public class Http2Example01 {
public static void main(String[] args) throws URISyntaxException, IOException, InterruptedException {
HttpClient httpClient = HttpClient.newHttpClient();
HttpResponse httpResponse = httpClient.send(
HttpRequest
.newBuilder(new URI("http://transport.opendata.ch/v1/connections?from=Bern&to=z%C3%BCrich&datetime=2017-09-21T17%3A00")
).GET().build(),
HttpResponse.BodyHandler.asString()
);
int code = httpResponse.statusCode();
System.out.println(code);
System.out.println(httpResponse.body().toString());
}
}
运行后发现报如下错误
这是由于java9采用模块化,所以你需要在目录中新建一个名称为 module-info.java 的文件。并在该文件中引用相关模块
添加代码如下
module http2{
requires jdk.incubator.httpclient;
exports http2.com.http2.example01;
}
结果: