java、下载图片保存
/** 附件的处理**/
String filename = "" ;
String attachUrl = “http://00.imgmini.eastday.com/mobile/20180205/20180205084105_d98c05f4a32e080a643a7688ca6d4396_3.jpeg”;
if( !attachUrl.isEmpty() )
{
String[] attachUrlArray = attachUrl.split( "," );
/** 下载附件**/
for( int j = 0; j < attachUrlArray.length; j++ )
{
String photoUrl = attachUrlArray[j];
String fileName = photoUrl.substring( photoUrl.lastIndexOf( "/" ) );
String filePath = "d:";
String file = this. __saveUrlAs( photoUrl, filePath + fileName,fileName,"GET" );
filename += file + ",";
}
}
/**
* 下载媒体* @param url 路径
* @param filePath 要存储的路径
* @param fileName 媒体名称
* @param method 发送的方式
* @return 媒体存储的路径
*/
private String __saveUrlAs( String url, String filePath, String fileName,String method )
{
//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;
String urlPath = 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 += "/";
}
urlPath = filePath+ fileName;
//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( urlPath );
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)
{
Logger.getLogger ( AliyunEmailPluginImpl.class.getName() ).log ( Level.SEVERE , null , e );
}
return urlPath;
}