ajax 發送xml文件，java接受xml文件並解析

紅色字體爲主要代碼

jsp頁面中

<script language="javascript">

function  updateDB(operate){
  var objDom=new ActiveXObject("msxml.DomDocument");
   var objRoot=objDom.createElement("All");
   objDom.appendChild(objRoot);
  
  var k=document.getElementsByName("check"); //選擇框
 
  for(var i=0;i<k.length;i++){
          if(k[i].checked){     //將選擇的數據組合成xml格式的數據
          var currentRow=k[i].parentNode.parentNode;
         
          var obj=objDom.createElement("Good");
          objRoot.appendChild(obj); 
           
   var objNode=objDom.createElement("xl_id");
    
       objNode.text=k[i].value;
       obj.appendChild(objNode);
      
   objNode=objDom.createElement("xqnum");
     objNode.text=currentRow.cells[5].childNodes[0].value;
     obj.appendChild(objNode);
    
   objNode=objDom.createElement("desc");
    objNode.text=currentRow.cells[7].childNodes[0].value;
    obj.appendChild(objNode);
                 
            }
   }
   ajaxSendPost("qgApplyAction.do?method="+operate.name,objDom,null);//自己封裝的ajax請求 第一個參數爲url,第二個爲傳送參數，第三個是回調函數
  }
</script>

 

後臺action.java代碼接收xml文件 代碼如下

 引入的包如下

import org.w3c.dom.Document;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;

action中的方法

 

 public ActionForward updateApplyDetail(ActionMapping mapping, ActionForm form,
   HttpServletRequest request, HttpServletResponse response) {
  // TODO Auto-generated method stub
  List<QGGoodBean> goods=new ArrayList<QGGoodBean>();
  String xml =readXMLFromResQuestBody(request);
  Document xmlDoc=null;
    try {
     //用字符串生成內存流，再用內存流生成Document對象。Document的parse方法需要流做爲參數
     try {
   xmlDoc = DocumentBuilderFactory.newInstance().newDocumentBuilder().parse(new ByteArrayInputStream(xml.getBytes("utf-8")));
  } catch (IOException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
    } catch (SAXException e) {
     e.printStackTrace();
    } catch (ParserConfigurationException e) {
     e.printStackTrace();
    }
   //得到所有type元素
    NodeList selectedPetTypes = xmlDoc.getElementsByTagName("Good");
    for(int i=0;i<selectedPetTypes.getLength();i++){
     //selectedPetTypes.item(i)得到Node對象
     //selectedPetTypes.item(i).getChildNodes()得到Good的子節點的值
     QGGoodBean qgGood=new QGGoodBean();
     qgGood.setX_id(selectedPetTypes.item(i).getChildNodes().item(0).getTextContent());
     qgGood.setAmount(selectedPetTypes.item(i).getChildNodes().item(1).getTextContent());
     qgGood.setRequireDesc(selectedPetTypes.item(i).getChildNodes().item(2).getTextContent());
     goods.add(qgGood);
    }
    response.setContentType("text/xml");
    PrintWriter out;
  try {
    out = response.getWriter();
     out.print("aa");
  } catch (IOException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }

      return null;
 }

 private String readXMLFromResQuestBody(HttpServletRequest request){
    StringBuffer xml = new StringBuffer();
    String line = null;
    try{
     BufferedReader reader = request.getReader();
     while((line=reader.readLine())!=null){
      xml.append(line);
     }
    }catch(Exception e){
     System.out.println("Error reading XML:"+e.toString());
    }
    return xml.toString();
   }