Java开发微信公众号接收和被动回复普通消息

public static Map parseXml(HttpServletRequest request) throws Exception {
// 将解析结果存储在HashMap中
Map map = new HashMap();
// 从request中取得输入流
InputStream inputStream = request.getInputStream();
/*
* 读取request的body内容 此方法会导致流读取问题 Premature end of file. Nested exception:
* Premature end of file String requestBody =
* inputStream2String(inputStream); System.out.println(requestBody);
*/
// 读取输入流
SAXReader reader = new SAXReader();
Document document = reader.read(inputStream);
// 得到xml根元素
Element root = document.getRootElement();
// 得到根元素的所有子节点
List<Element> elementList = root.elements();
// 遍历所有子节点
for (Element e : elementList)
map.put(e.getName(), e.getText());
// 释放资源
inputStream.close();
inputStream = null;
return map;
}
private static String inputStream2String(InputStream is) throws IOException {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
int i = -1;
while ((i = is.read()) != -1) {
baos.write(i);
}
return baos.toString();
}

<xml>
<ToUserName><![CDATA[发消息的人，即订阅者]]></ToUserName>
<FromUserName><![CDATA[微信公众号本身]]></FromUserName>
<CreateTime>消息创建时间（整形）</CreateTime>
<MsgType><![CDATA[text]]></MsgType>
<Content><![CDATA[消息内容]]></Content>
</xml>

<xml>
<ToUserName><![CDATA[toUser]]></ToUserName>
<FromUserName><![CDATA[fromUser]]></FromUserName> 
<CreateTime>1348831860</CreateTime>
<MsgType><![CDATA[text]]></MsgType>
<Content><![CDATA[this is a text]]></Content>
<MsgId>1234567890123456</MsgId>
</xml>