web GIS地图打印(2)

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Web IE XML

showModalDialog("${cpath}/common/popinput.htm",ar,"resizable:yes;scroll:yes;dialogHeight:800px;dialogWidth:900px;center=yes");

//打开对话框显示pdf，这种方式是为了避免在打开pdf时提示保存或打开，直接在ie中打开pdf。

}

// popinput.htm的代码也没什么，代码如下：

document.write("<frameset rows='0,*' frameborder='NO' border='0' framespacing='0'>");

document.write("<frame src='' name='unvisible'>");

document.write("<frame id='xxx' src="+"'"+window.dialogArguments[0]+"'" + " name='opened'>");

document.write("</frameset>");

var inputObj = window.dialogArguments[1];

</script>

</body></noframes>

5、action中就是生成pdf的操作了，这里主要是用了jasperreports,对print_t.jrxml模版进行xml解析，将需要添加的东西添加进去

Action中的主要代码：

else if("print".equals(act)){

final String cpath = request.getParameter("cpath");

String title = request.getParameter("title");

String scale = request.getParameter("scale");

int width = Integer.valueOf(request.getParameter("width"));

int height = Integer.valueOf(request.getParameter("height"));

double mapWidth = Double.valueOf(request.getParameter("mapWidth"));

double mapHeight = Double.valueOf(request.getParameter("mapHeight"));

String imgUrl = request.getParameter("imgUrl").replace("||", "&");

String imgname = request.getParameter("imgname");

String realPath = request.getParameter("realPath");

System.out.println(imgUrl);

SAXBuilder builder=new SAXBuilder(false);

builder.setEntityResolver(new EntityResolver() {

public InputSource resolveEntity(String publicId,

String systemId) throws SAXException, IOException {

return new InputSource(cpath+"/report/jasperreport.dtd");

}

});

String dirPath = cpath+"/moduleFile/print_t.jrxml";

Document doc = builder.build(dirPath);

setPrint(doc, title, scale, width, height, mapWidth, mapHeight, imgUrl,cpath,imgname,dataSet,realPath);

request.setAttribute("document", doc);

request.setAttribute("dataSet", dataSet);

return mapping.findForward("printview");

}

解析xml的代码，BillXML是我们写的一个用来解析xml的类。这个方法的代码其实就是些重复的代码，因为pdf的页面大小和各元素的x，y坐标都不确定，所以这里要根据选的纸张大小来确定他们的长宽，x,y坐标。

private void setPrint(Document doc,String title,String scale,int width,int height,double mapWidth,double mapHeight,String imgUrl,String cpath,String imgname,String dataSet,String realPath) throws Exception{

//set page size

Element root = doc.getRootElement();

root.setAttribute(new Attribute("pageWidth",String.valueOf(width)));//设置整个页面宽

root.setAttribute(new Attribute("pageHeight",String.valueOf(height)));//设置整个页面高

BillXML billXml=new BillXML();

int leftMargin = Integer.valueOf(root.getAttributeValue("leftMargin"));//左边距

int rightMargin = Integer.valueOf(root.getAttributeValue("rightMargin"));//右边距

int topMargin = Integer.valueOf(root.getAttributeValue("topMargin"));//上边距

int bottomMargin = Integer.valueOf(root.getAttributeValue("bottomMargin"));//下边距

root.setAttribute(new Attribute("columnWidth",String.valueOf(Integer.valueOf(width - leftMargin - rightMargin).intValue())));//设置内容显示区域的宽

//p0

Element summary = billXml.selectElement(doc, "summary");

Element su_band = billXml.selectElement(summary, "band");

Element su_image = billXml.selectElement(su_band, "image");

Element su_reportElement = billXml.selectElement(su_image, "reportElement");

Element su_imageExpression = billXml.selectElement(su_image, "imageExpression");

//images

Element pageFooter = billXml.selectElement(doc, "pageFooter");

Element pf_band = billXml.selectElement(pageFooter, "band");

List images = billXml.selectListElement(pf_band, "image");

//north_img

Element north_img = (Element)images.get(1);

Element north_img_reportElement = billXml.selectElement(north_img, "reportElement");

Element north_img_imageExpression = billXml.selectElement(north_img, "imageExpression");

int north_img_w = Integer.valueOf(north_img_reportElement.getAttributeValue("width"));

int north_img_h = Integer.valueOf(north_img_reportElement.getAttributeValue("height"));

//logo_img

Element logo_img = (Element)images.get(0);

Element logo_img_reportElement = billXml.selectElement(logo_img, "reportElement");

Element logo_img_imageExpression = billXml.selectElement(logo_img, "imageExpression");

int logo_img_w = Integer.valueOf(logo_img_reportElement.getAttributeValue("width"));

int logo_img_h = Integer.valueOf(logo_img_reportElement.getAttributeValue("height"));

//staticTexts

List staticTexts = billXml.selectListElement(pf_band, "staticText");

//t1

Element t1 = (Element)staticTexts.get(0);

Element t1_reportElement = billXml.selectElement(t1, "reportElement");

Element t1_text = billXml.selectElement(t1, "text");

int t1_w = Integer.valueOf(t1_reportElement.getAttributeValue("width"));

int t1_h = Integer.valueOf(t1_reportElement.getAttributeValue("height"));

//t2

Element t2 = (Element)staticTexts.get(1);

Element t2_reportElement = billXml.selectElement(t2, "reportElement");

Element t2_text = billXml.selectElement(t2, "text");

int t2_w = Integer.valueOf(t2_reportElement.getAttributeValue("width"));

int t2_h = Integer.valueOf(t2_reportElement.getAttributeValue("height"));

//t3

Element t3 = (Element)staticTexts.get(2);

Element t3_reportElement = billXml.selectElement(t3, "reportElement");

Element t3_text = billXml.selectElement(t3, "text");

int t3_w = Integer.valueOf(t3_reportElement.getAttributeValue("width"));

int t3_h = Integer.valueOf(t3_reportElement.getAttributeValue("height"));

//t4

Element t4 = (Element)staticTexts.get(3);

Element t4_reportElement = billXml.selectElement(t4, "reportElement");

Element t4_text = billXml.selectElement(t4, "text");

int t4_w = Integer.valueOf(t4_reportElement.getAttributeValue("width"));

int t4_h = Integer.valueOf(t4_reportElement.getAttributeValue("height"));

//set summary height

int summary_w = width - leftMargin - rightMargin;

int summary_h = height-(topMargin + bottomMargin + t1_h + north_img_h + logo_img_h);

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web GIS地图打印(3) | web GIS地图打印

2009-06-04 18:02
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