在java中使用curl命令

Question

我有一个curl命令可以使用

curl -s -d user.name=xxxx \
       -d file=yyyy \
       -d arg=-v \
       'http://localhost:zzzz/templeton/v1/pig'

任何人都可以为上面的curl命令告诉等效的java代码.

提前致谢

Answer 1

这里的示例显示了执行curl的Processbuilder.这部分代码在我的环境中运行良好.实际上,你将毫无问题地执行它.程序从Web获取图像,并保存为jpg文件.jpg文件保存在路径"/ home/your_user_name/Pictures"中.

import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Arrays;

  public class ProcessBuilderTest {

public static void main(String arg[]) throws IOException {

    ProcessBuilder pb = new ProcessBuilder(
            "curl",
            "-s",
            "http://static.tumblr.com/cszmzik/RUTlyrplz/the-simpsons-season-22-episode-13-the-blue-and-the-gray.jpg ");

    pb.directory(new File("/home/your_user_name/Pictures"));
    pb.redirectErrorStream(true);
    Process p = pb.start();
    InputStream is = p.getInputStream();

    FileOutputStream outputStream = new FileOutputStream(
            "/home/your_user_name/Pictures/simpson_download.jpg");

    BufferedInputStream bis = new BufferedInputStream(is);
    byte[] bytes = new byte[100];
    int numberByteReaded;
    while ((numberByteReaded = bis.read(bytes, 0, 100)) != -1) {

        outputStream.write(bytes, 0, numberByteReaded);
        Arrays.fill(bytes, (byte) 0);

    }

    outputStream.flush();
    outputStream.close();

}
 }

对于你的问题.使用Processbuilder时,将curl映射到Java代码是最直接和最直观的.就这样写:

curl -s -d user.name=xxxx \
-d file=yyyy \
-d arg=-v \
'htttp://localhost:zzzz/templeton/v1/pig'

成为

ProcessBuilder pb = new ProcessBuilder("-s","-d user.name=xxxx ","-d `file=yyyy","-d   rg=-v" ,"htttp://localhost:zzzz/templeton/v1/pig");`