JDK9上的“程序包java.net.http不存在”错误

  • Z时代
  • 2024-01-10
  • 分类：问答

我在从HttpRequest JavaDoc编译简单的阻止GET示例时遇到问题：

package org.example;
import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import static java.net.http.HttpRequest.noBody;
import static java.net.http.HttpResponse.asString;
public class Http2 {
    public static void main(String[] args) throws URISyntaxException, IOException, InterruptedException {
        HttpResponse response = HttpRequest
                .create(new URI("http://www.infoq.com"))
                .body(noBody())
                .GET().response();
        int responseCode = response.statusCode();
        String responseBody = response.body(asString());
        System.out.println(responseBody);
    }
}

我得到package java.net.http does not exist使用JDK 9编译时错误：

{ jdk9 }  » /cygdrive/c/Program\ Files/Java/jdk-9/bin/javac -d out/production -modulesourcepath org.example.module1/src/ -m org.example.module1
org.example.module1\src\org.example.module1\org\example\Http2.java:6: error: package java.net.http does not exist
import java.net.http.HttpRequest;
                    ^
org.example.module1\src\org.example.module1\org\example\Http2.java:7: error: package java.net.http does not exist
import java.net.http.HttpResponse;
                    ^
org.example.module1\src\org.example.module1\org\example\Http2.java:9: error: package java.net.http does not exist
import static java.net.http.HttpRequest.noBody;
                           ^
org.example.module1\src\org.example.module1\org\example\Http2.java:9: error: static import only from classes and interfaces
import static java.net.http.HttpRequest.noBody;
^
org.example.module1\src\org.example.module1\org\example\Http2.java:10: error: package java.net.http does not exist
import static java.net.http.HttpResponse.asString;
                           ^
org.example.module1\src\org.example.module1\org\example\Http2.java:10: error: static import only from classes and interfaces
import static java.net.http.HttpResponse.asString;
^
org.example.module1\src\org.example.module1\org\example\Http2.java:14: error: cannot find symbol
        HttpResponse response = HttpRequest
        ^
  symbol:   class HttpResponse
  location: class Http2
org.example.module1\src\org.example.module1\org\example\Http2.java:14: error: cannot find symbol
        HttpResponse response = HttpRequest
                                ^
  symbol:   variable HttpRequest
  location: class Http2
org.example.module1\src\org.example.module1\org\example\Http2.java:16: error: cannot find symbol
                .body(noBody())
                      ^
  symbol:   method noBody()
  location: class Http2
org.example.module1\src\org.example.module1\org\example\Http2.java:19: error: cannot find symbol
        String responseBody = response.body(asString());
                                            ^
  symbol:   method asString()
  location: class Http2
10 errors

使用命令行和IntelliJ会发生相同的错误。

我的模块没有问题，因为没有java.net.http的类可以编译并运行而没有任何问题。

知道发生了什么吗？

回答：

在模块定义中（基于包名称）位于中src/org/example/module-info.java，您需要将依赖项添加到java.net.http包中，该依赖项包含在java.httpclient模块中：

module org.example {
    requires java.httpclient;
}

您可以在模块摘要中找到JDK模块的列表。

以上是 JDK9上的“程序包java.net.http不存在”错误 的全部内容， 来源链接： utcz.com/qa/432416.html

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