微信消息处理JAXP-dom解析

  1 package cn.lihainan.test;

  2 import java.io.BufferedReader;

  3 import java.io.ByteArrayInputStream;

  4 import java.io.ByteArrayOutputStream;

  5 import java.io.FileInputStream;

  6 import java.io.IOException;

  7 import java.io.InputStream;

  8 import java.io.InputStreamReader;

  9 import java.io.PrintWriter;

 10 import java.text.SimpleDateFormat;

 11 

 12 import javax.servlet.ServletException;

 13 import javax.servlet.ServletRequest;

 14 import javax.servlet.http.HttpServlet;

 15 import javax.servlet.http.HttpServletRequest;

 16 import javax.servlet.http.HttpServletResponse;

 17 import javax.xml.parsers.DocumentBuilder;

 18 import javax.xml.parsers.DocumentBuilderFactory;

 19 import javax.xml.parsers.ParserConfigurationException;

 20 

 21 

 22 import org.dom4j.io.SAXReader;

 23 import org.dom4j.io.XMLWriter;

 24 

 25 import org.w3c.dom.Document;

 26 import org.w3c.dom.Node;

 27 

 28 

 29 public class Demo1 extends HttpServlet {

 30     public void doPost(HttpServletRequest request, HttpServletResponse response)

 31     throws ServletException, IOException { 

 32         try {    // 将请求、响应的编码均设置为UTF-8（防止中文乱码）

 33         request.setCharacterEncoding("utf-8");  

 34         response.setContentType("textml;charset=utf-8");

 35         InputStream inputStream = request.getInputStream();

 36         

 37 

 38 

 39         String result = readFromInputStream(inputStream);

 40         

 41         

 42         

 43         PrintWriter out = response.getWriter();

 44 

 45         out.println("原始消息：");

 46 

 47         out.println(result);

 48 

 49         //解析 建立document解析

 50         DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();

 51         DocumentBuilder builder;

 52         builder = factory.newDocumentBuilder();

 53         

 54         InputStream xmlStream = new ByteArrayInputStream(result.getBytes("UTF-8"));

 55         Document document =  builder.parse(xmlStream);

 56         //定义节点    根据节点从document中找到要输出的 

 57         Node ToUserName = document.getElementsByTagName("ToUserName").item(0);      

 58         System.out.println(ToUserName.getTextContent());

 59         

 60         Node FromUserName = document.getElementsByTagName("FromUserName").item(0);      

 61         System.out.println(FromUserName.getTextContent());

 62         

 63         Node MsgType= document.getElementsByTagName("MsgType").item(0);      

 64         System.out.println(MsgType.getTextContent());

 65         

 66         Node Content = document.getElementsByTagName("Content").item(0);      

 67         System.out.println(Content.getTextContent());

 68         

 69         Node MsgId= document.getElementsByTagName("MsgId").item(0);      

 70         System.out.println(MsgId.getTextContent());

 71         

 72         

 73         out.println();

 74         //输出

 75         out.println("解析结果：");

 76         out.print("FromUserName(来自):");

 77         out.println(FromUserName.getTextContent());

 78         out.print("ToUserName(发送至):");

 79         out.println(ToUserName.getTextContent());

 80         out.print("CreateTime(时间):");

 81         

 82         Node createTime= document.getElementsByTagName("CreateTime").item(0);

 83         int t = Integer.parseInt(createTime.getTextContent());

 84         SimpleDateFormat format = new SimpleDateFormat("yyyy/MM/dd hh:mm:ss");

 85         out.println(format.format((long)t*1000L));

 86         out.print("MsgType(消息类型):");

 87         out.println(MsgType.getTextContent());

 88         out.print("Content(文本内容):");

 89         out.println(Content.getTextContent());

 90         out.print("MsgId(文件消息标识号):");

 91         out.println(MsgId.getTextContent());

 92         } catch (ParserConfigurationException e) {

 93         // TODO Auto-generated catch block

 94         e.printStackTrace();

 95         } catch (Exception e) {

 96         // TODO Auto-generated catch block

 97         e.printStackTrace();

 98         }

 99     }

100     

101     //将输入流InputStream变为String

102     public String readFromInputStream(InputStream in) throws IOException {

103         ByteArrayOutputStream baos = new ByteArrayOutputStream();

104         byte[] buffer = new byte[1024];

105         int len = -1;

106         while ((len = in.read(buffer)) != -1) {

107             baos.write(buffer, 0, len);

108         }

109         baos.close();

110         in.close();

111         // 解析内容     看网上更改 输出中文乱码  但是未解决  已知输入流为gbk  输出为utf-8  求如何转换

112         byte[] lens = baos.toByteArray();

113         String result = new String(lens,"UTF-8");

114         

115         return result;

116     

117     }

118 }