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package com.baidu.ueditor.hunter;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import com.baidu.ueditor.PathFormat;
import com.baidu.ueditor.define.AppInfo;
import com.baidu.ueditor.define.BaseState;
import com.baidu.ueditor.define.MIMEType;
import com.baidu.ueditor.define.MultiState;
import com.baidu.ueditor.define.State;
import com.baidu.ueditor.upload.StorageManager;
/**
* 图片抓取器
* @author hancong03@baidu.com
*
*/
public class ImageHunter {
private String filename = null;
private String savePath = null;
private String rootPath = null;
private List<String> allowTypes = null;
private long maxSize = -1;
private List<String> filters = null;
public ImageHunter ( Map<String, Object> conf ) {
this.filename = (String)conf.get( "filename" );
this.savePath = (String)conf.get( "savePath" );
this.rootPath = (String)conf.get( "rootPath" );
this.maxSize = (Long)conf.get( "maxSize" );
this.allowTypes = Arrays.asList( (String[])conf.get( "allowFiles" ) );
this.filters = Arrays.asList( (String[])conf.get( "filter" ) );
}
public State capture ( String[] list ) {
MultiState state = new MultiState( true );
for ( String source : list ) {
state.addState( captureRemoteData( source ) );
}
return state;
}
public State captureRemoteData ( String urlStr ) {
HttpURLConnection connection = null;
URL url = null;
String suffix = null;
try {
url = new URL( urlStr );
if ( !validHost( url.getHost() ) ) {
return new BaseState( false, AppInfo.PREVENT_HOST );
}
connection = (HttpURLConnection) url.openConnection();
connection.setInstanceFollowRedirects( true );
connection.setUseCaches( true );
if ( !validContentState( connection.getResponseCode() ) ) {
return new BaseState( false, AppInfo.CONNECTION_ERROR );
}
suffix = MIMEType.getSuffix( connection.getContentType() );
if ( !validFileType( suffix ) ) {
return new BaseState( false, AppInfo.NOT_ALLOW_FILE_TYPE );
}
if ( !validFileSize( connection.getContentLength() ) ) {
return new BaseState( false, AppInfo.MAX_SIZE );
}
String savePath = this.getPath( this.savePath, this.filename, suffix );
String physicalPath = this.rootPath + savePath;
State state = StorageManager.saveFileByInputStream( connection.getInputStream(), physicalPath );
if ( state.isSuccess() ) {
state.putInfo( "url", PathFormat.format( savePath ) );
state.putInfo( "source", urlStr );
}
return state;
} catch ( Exception e ) {
return new BaseState( false, AppInfo.REMOTE_FAIL );
}
}
private String getPath ( String savePath, String filename, String suffix ) {
return PathFormat.parse( savePath + suffix, filename );
}
private boolean validHost ( String hostname ) {
return !filters.contains( hostname );
}
private boolean validContentState ( int code ) {
return HttpURLConnection.HTTP_OK == code;
}
private boolean validFileType ( String type ) {
return this.allowTypes.contains( type );
}
private boolean validFileSize ( int size ) {
return size < this.maxSize;
}
}