...... DataInputStream iStrm = conn.openDataInputStream(); byte imageData[]; 
//如果已知图片尺寸 
 if (length != -1) {     imageData = new byte[length]; 
    // 读取图片数据至imageData数组     iStrm.readFully(imageData); 
// 图片尺寸未知 } else {     ByteArrayOutputStream bStrm = new ByteArrayOutputStream();     int ch;     while ((ch = iStrm.read()) != -1)         bStrm.write(ch);     imageData = bStrm.toByteArray();     bStrm.close(); } 
//创建图片  image = Image.createImage(imageData, 0, imageData.length); ......
  
 
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