function( key, blob, filename ) {
                var me = this,
                    opts = me.options;
    
                if ( me.getRuid() ) {
                    me.disconnectRuntime();
                }
    
                // 连接到blob归属的同一个runtime.
                me.connectRuntime( blob.ruid, function() {
                    me.exec('init');
                });
    
                me._blob = blob;
                opts.fileVar = key || opts.fileVar;
                opts.filename = filename || opts.filename;
            }
function( key, blob, filename ) {
                var me = this,
                    opts = me.options;
    
                if ( me.getRuid() ) {
                    me.disconnectRuntime();
                }
    
                // 连接到blob归属的同一个runtime.
                me.connectRuntime( blob.ruid, function() {
                    me.exec('init');
                });
    
                me._blob = blob;
                opts.fileVar = key || opts.fileVar;
                opts.filename = filename || opts.filename;
            }
function ( key , blob , filename ) { var me = this , opts = me . options ; if ( me . getRuid ( ) ) { me . disconnectRuntime ( ) ; } // 连接到blob归属的同一个runtime. me . connectRuntime ( blob . ruid , function ( ) { me . exec ( 'init' ) ; } ) ; me . _blob = blob ; opts . fileVar = key || opts . fileVar ; opts . filename = filename || opts . filename ; }
添加Blob, 只能添加一次，最后一次有效。
添加Blob 只能添加一次，最后一次有效。
Initialize the file cache