[工作代码]dom4j解析实例

[工作代码]dom4j解析实例

工作中，我需要和另一个公司(A公司)共同开发一个模块，我写一个servlet接口，A公司携带xml格式的报文来访问。我采用流的形式读取，在处理后以流的形式写入，在返回(相应)给A公司。

demo:

  1 package com.sinosoft.undwrt.bl.facade;
  2 
  3 import java.io.BufferedInputStream;
  4 import java.io.BufferedOutputStream;
  5 import java.io.BufferedReader;
  6 import java.io.IOException;
  7 import java.io.InputStream;
  8 import java.io.InputStreamReader;
  9 import java.io.StringBufferInputStream;
 10 import java.sql.ResultSet;
 11 import java.sql.SQLException;
 12 import java.util.ArrayList;
 13 import java.util.HashMap;
 14 import java.util.List;
 15 import java.util.Map;
 16 
 17 import javax.servlet.ServletException;
 18 import javax.servlet.http.HttpServlet;
 19 import javax.servlet.http.HttpServletRequest;
 20 import javax.servlet.http.HttpServletResponse;
 21 l.parsers.FactoryConfigurationError;
 22 l.parsers.ParserConfigurationException;
 23 
 24 import org.dom4j.Document;
 25 import org.dom4j.DocumentException;
 26 import org.dom4j.Element;
 27 import org.dom4j.io.SAXReader;
 28 l.sax.SAXException;
 29 
 30 import com.ference.DBManager;
 31 import com.sinosoft.utiall.schema.PrpDriskSchema;
 32 import com.UserException;
 33 
 34 public class CheckIfPassFacade extends HttpServlet {
 35 
 36     /**
 37      * Destruction of the servlet. <br>
 38      */
 39     public void destroy() {
 40         super.destroy(); // Just puts "destroy" string in log
 41         // Put your code here
 42     }
 43 
 44     /**
 45      * The doGet method of the servlet. <br>
 46      *
 47      * This method is called when a form has its tag value method equals to get.
 48      * 
 49      * @param request the request send by the client to the server
 50      * @param response the response send by the server to the client
 51      * @throws ServletException if an error occurred
 52      * @throws IOException if an error occurred
 53      */
 54     public void doGet(HttpServletRequest request, HttpServletResponse response)
 55             throws ServletException, IOException {
 56 
 57        doPost(request, response);
 58     }
 59 
 60     /**
 61      * @param request the request send by the client to the server
 62      * @param response the response send by the server to the client
 63      * @throws ServletException if an error occurred
 64      * @throws IOException if an error occurred
 65      * @author yaowengang
 66      * @time 2016-1-26
 67      * @desc 共享平台访问此servlet，以流的形式返回passFlag(是否审核通过true or false),passTime(审核通过时间),undwrter(审核通过人)
 68      * @desc underwriteflag  1审核通过，9提交到核赔/核保(在双核或共享平台)，6注销，
 69                              2下发修改，0暂存(在核心) ；
 70                              3自动核保(自核单子审核通过后)；4无需核保(自核单子审核通过前的标识)
 71      */
 72     public void doPost(HttpServletRequest request, HttpServletResponse response)
 73             throws ServletException, IOException {
 74         String[] arrs= analyzeXML(request);
 75         //获取指定元素的内容
 76         String taskId= arrs[0];//businessNo
 77         String businessType= arrs[1];
 78         
 79         boolean isT= businessType.equals("T")?  true:  false;
 80         DBManager dbManager = new DBManager();
 81         List list= new ArrayList<String>();
 82         ResultSet resultSet= null;
 83         String underwriteFlag= null;
 84         String passTime= null;
 85         Boolean passFlag= null ;//true:审核通过，false:未审核通过
 86         String undwrter =null;//核保人
 87         BufferedOutputStream ou= null;
 88         try {
 89             if (taskId!=null&&!"".equals(taskId)) {
 90 //                boolean isT= taskId.startsWith("T") ? true :false ;//需要改，让平台作为参数传给我 
 91                 dbManager.open("ddccDataSource");
 92                 if (isT) {//投保单
 93                     String sqlT= "select underwriteflag,passtime,underwritecode from prptmain where proposalno=?";
 94                     dbManager.prepareStatement(sqlT);
 95                     dbManager.setString(1, taskId);
 96                     resultSet = utePreparedQuery();
 97                     while (()) {
 98                         underwriteFlag= String("underwriteflag");
 99                         passTime= String("passtime");
100                         undwrter= String("underwritecode");
101                         passFlag= underwriteFlag.equals("1");
102                         if (!passFlag) {
103                             passTime=null;
104                             undwrter=null;
105                         }
106                         break;
107                     }
108                     /*if (passFlag) {
109                         resultSet= null;
110                         String sql2= "select passtime,underwritecode from prptmain where proposalno=?";
111                         dbManager.prepareStatement(sql2);
112                         dbManager.setString(1, taskId);
113                         resultSet = utePreparedQuery();
114                         while (()) {
115                             passTime= String("passtime");
116                             undwrter= String("underwritecode");
117                             break;
118                         }
119                         if (passTime==null) {
120                                passTime="";
121                         }
122                     }*/
123                     
124                 }else {//批单
125                     String sqlP= "select underwriteflag,passtime,underwritecode from prpphead where endorseno=?";
126                     dbManager.prepareStatement(sqlP);
127                     dbManager.setString(1, taskId);
128                     resultSet = utePreparedQuery();
129                     while (()) {
130                         underwriteFlag= String("underwriteflag");
131                         passTime= String("passtime");
132                         undwrter= String("underwritecode");
133                         passFlag= underwriteFlag.equals("1");
134                         if (!passFlag) {
135                             passTime=null;
136                             undwrter=null;
137                         }
138                         /*passTime= String("passtime");
139                         undwrter= String("underwritecode");*/
140                         /*if (passTime==null) {
141                                passTime="";
142                         }*/
143                         break;
144                     }
145                     /*if (passFlag) {
146                         resultSet= null;
147                         String sql2= "select passtime,underwritecode from prpphead where endorseno=?";
148                         dbManager.prepareStatement(sql2);
149                         dbManager.setString(1, taskId);
150                         resultSet = utePreparedQuery();
151                         while (()) {
152                             passTime= String("passtime");
153                             undwrter= String("underwritecode");
154                             break;
155                         }
156                         if (passTime==null) {
157                                passTime="";
158                         }
159                     }*/
160                 }
161                
162                 
163             }else {
164                 throw new Exception("解析报文失败!请检查报文是否正确。");
165             }
166             
167             list.add(""+passFlag);
168             list.add(passTime);
169             list.add(undwrter);
170             String resultXML= assembleXML(list);
171             System.out.println("给平台返回的xml :"+resultXML);
172             ou = new OutputStream());
173             ou.Bytes());
174             ou.flush();
175             ou.close();
176         }catch (IOException e1) {
177             e1.printStackTrace();
178         }catch (SQLException e2) {
179             e2.printStackTrace();
180         } catch (Exception e) {
181             e.printStackTrace();
182         }finally{
183             if (dbManager!=null) {
184                 try {
185                     dbManager.close();
186                 } catch (Exception e) {
187                     e.printStackTrace();
188                 }
189             }
190         }
191     }
192 
193     /**
194      * Initialization of the servlet. <br>
195      *
196      * @throws ServletException if an error occurs
197      */
198     public void init() throws ServletException {
199         // Put your code here
200     }
201     
202     /**
203      * @desc 将查询所得数据构造成xml格式，便于传送
204      * @param 
205      * @throws UserException, ParserConfigurationException, FactoryConfigurationError, SAXException,Exception
206      */
207     public String assembleXML(List<String> list) throws UserException, ParserConfigurationException, FactoryConfigurationError, SAXException,Exception {
208         StringBuilder strBuilder = new StringBuilder();
209         strBuilder.append("<?xml version="1.0" encoding="UTF-8"?>");
210         strBuilder.append("<ROOT>");
211         strBuilder.append("<HEAD>");
212         strBuilder.append("<INFO>");
213         strBuilder.append("<PASSFLAG>"+ (0)+ "</PASSFLAG>");
214         strBuilder.append("<PASSTIME>"+ (1)+ "</PASSTIME>");
215         strBuilder.append("<UNDWRTER>"+ (2)+ "</UNDWRTER>");
216         strBuilder.append("</INFO>");
217         strBuilder.append("</HEAD>");
218         strBuilder.append("</ROOT>");
219         String();
220     }
221     
222     /**
223      * @desc dom4j框架解析来自request的报文
224      * @author yaowengang
225      * @throws IOException 
226      * @date 20160224
227      * */
228     public String[] analyzeXML(HttpServletRequest request) throws IOException   {//
229         
230         String[] datas= new String[2];
231         InputStream XMLInputStream= InputStream();
232         BufferedReader XMLBuffReader= new BufferedReader(new InputStreamReader(XMLInputStream));
233         StringBuilder requestXMLSB= new StringBuilder("");
234         InputStream in= null;
235         try {
236             String tempXML;
237             while (true) {
238                 tempXML= adLine();
239                 if (tempXML==null) {
240                     break;
241                 }
242                 requestXMLSB.append(tempXML);
243             }
244             String requestXML= String();
245             System.out.println("平台发的报文  :"+requestXML);
246             //解析收到的报文--采用dom4j框架
247             in= new StringBufferInputStream(requestXML);
248             SAXReader saxReader= new SAXReader();
249             Document document= null;
250             document = ad(in);
251             //获取根元素
252             Element root= RootElement();
253             Element headElement=  root.element("HEAD");
254             Element infoElement= headElement.element("INFO");
255             Element businessNoElement= infoElement.element("BUSINESSNO");
256             Element businessTypeElement= infoElement.element("BUSINESSTYPE");
257             //获取指定元素的内容
258             String businessNo= Text();
259             String businessType= Text();
260             datas[0]= businessNo;
261             datas[1]= businessType;
262             
263         }catch (DocumentException e1) {
264             e1.printStackTrace();
265         } catch (Exception e) {
266             e.printStackTrace();
267         }finally{
268             if (XMLBuffReader!=null) {
269                 XMLBuffReader.close();
270             }
271             if (in!=null) {
272                 in.close();
273             }
274         }
275         return datas;
276     } 
277 
278 }

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