package
test;
import org.junit.Test
;
import javax.servlet.http.HttpServletResponse
;
import java.io.*
;
import java.net.HttpURLConnection
;
import java.net.URL
;
/**
* @author lzy
* @date 2020-06-22
*/
public class saveUrlAs
{
/**
* @功能 下载临时素材接口
* @param filePath 文件将要保存的目录
* @param method 请求方法，包括POST和GET
* @param url 请求的路径
* @return
*/
public static void saveUrlAs
(String url, String filePath, String method, HttpServletResponse response
){
//System.out.println
("fileName---->"+filePath
);
//创建不同的文件夹目录
File file
=new File
(filePath
);
//判断文件夹是否存在
if (!file.exists
())
{
//如果文件夹不存在，则创建新的的文件夹
file.mkdirs
();
}
FileOutputStream fileOut
= null
;
HttpURLConnection conn
= null
;
InputStream inputStream
= null
;
try
{
// 建立链接
URL httpUrl
=new URL
(url
);
conn
=(HttpURLConnection
) httpUrl.openConnection
();
//以Post方式提交表单，默认get方式
conn.setRequestMethod
(method
);
conn.setDoInput
(true
);
conn.setDoOutput
(true
);
// post方式不能使用缓存
conn.setUseCaches
(false
);
//连接指定的资源
conn.connect
();
//获取网络输入流
inputStream
=conn.getInputStream
();
BufferedInputStream bis
= new BufferedInputStream
(inputStream
);
//判断文件的保存路径后面是否以/结尾
if (!filePath.endsWith
("/")) {
filePath +
= "/";
}
//写入到文件（注意文件保存路径的后面一定要加上文件的名称）
fileOut
= new FileOutputStream
(filePath+
"Android.pdf");
BufferedOutputStream bos
= new BufferedOutputStream
(fileOut
);
byte
[] buf
= new byte
[4096
];
int length
= bis.read
(buf
);
//保存文件
while
(length
!= -1
)
{
bos.write
(buf, 0, length
);
length
= bis.read
(buf
);
}
bos.close
();
bis.close
();
conn.disconnect
();
} catch
(Exception e
)
{
e.printStackTrace
();
System.out.println
("抛出异常！！");
}
System.out.println
(file
);
}
@Test
public void test1
() throws Exception
{
String photoUrl
= "http://ip:端口/文件地址";
String fileName
= photoUrl.substring
(photoUrl.lastIndexOf
("/"));
String substring
= fileName.substring
(0,fileName.lastIndexOf
("."));
System.out.println
("fileName---->"+fileName
);
String filePath
= "d:";
saveUrlAs
(photoUrl, filePath ,
"GET",null
);
}
}
