代码：
ImageRenderer render = new ImageRenderer();
System.out.println("kaishi");
String url = "106.14.72.182:8009/lifan_data/credit/to_report_detail.do?creditId=3053";
FileOutputStream out = new FileOutputStream(new File("D:"+File.separator+"html.png"));
render.renderURL(url, out, ImageRenderer.Type.PNG);