Question

9D sp1 iobjects for spark组件使用DMap出图时，运行了一段时间看着在创建四叉树索引时报Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: -1 异常：

Answer 1

根据提供的截图信息无法定位是哪个环节的问题，可以提供一份示例代码给你参考，看看能否正常出图。

def mapToPng(): Unit = {
    val map = new DMap()
    val wsPath = "D:\\ProgramFiles\\SuperMap\\SampleData\\ThemeMap\\Population\\Population.smwu"
    //    val mapName = "PopulationDistribution"
    val mapName = "Country"
    val initied = map.initialize(wsPath, mapName, sc)
    println("初始化：" + initied)
    val layerName = map.m_map.getLayers().get(0).getName()
    println("第一个图层名称：" + layerName)
    val d = new Dimension(1300, 900)
    val scale = 3.06958996816252e-8
    val center = new Point2D(11221274.9288006, 4324988.60305797)
    //    val bytes = map.outputMapToBitmap(d, scale, center)
    val bounds = new Rectangle2D(5694019.9914705455, 1336176.6739832237, 16563210.597276606, 7318110.2825711742)
    val bytes = map.outputMapToBitmap(d, bounds)
    println("长度:" + bytes.length)
    import javax.imageio.ImageIO
    val input = new ByteArrayInputStream(bytes);
    val image = ImageIO.read(input);
    //todo    出白图
    val ff = new File("data\\map.png");
    ImageIO.write(image, "png", ff)
    println("完成")
  }