代码讲解java_主要代码的讲解
下面就講解其核心部分——解析接收到的xml數(shù)據(jù)，并以文本類消息為例，通過圖靈機(jī)器人api接口實(shí)現(xiàn)智能回復(fù)。
2.1 首先看一下整體流程處理代碼，包括：xml數(shù)據(jù)處理、調(diào)用圖靈api、封裝返回的xml數(shù)據(jù)。package demo.process;
import java.util.Date;
import demo.entity.ReceiveXmlEntity;
/**
* 微信xml消息處理流程邏輯類
* @author pamchen-1
*
*/
public class WechatProcess {
/**
* 解析處理xml、獲取智能回復(fù)結(jié)果(通過圖靈機(jī)器人api接口)
* @param xml 接收到的微信數(shù)據(jù)
* @return 最終的解析結(jié)果(xml格式數(shù)據(jù))
*/
public String processWechatMag(String xml){
/** 解析xml數(shù)據(jù) */
ReceiveXmlEntity xmlEntity = new ReceiveXmlProcess().getMsgEntity(xml);
/** 以文本消息為例，調(diào)用圖靈機(jī)器人api接口，獲取回復(fù)內(nèi)容 */
String result = "";
if("text".endsWith(xmlEntity.getMsgType())){
result = new TulingApiProcess().getTulingResult(xmlEntity.getContent());
}
/** 此時，如果用戶輸入的是“你好”，在經(jīng)過上面的過程之后，result為“你也好”類似的內(nèi)容
* 因為最終回復(fù)給微信的也是xml格式的數(shù)據(jù)，所有需要將其封裝為文本類型返回消息
* */
result = new FormatXmlProcess().formatXmlAnswer(xmlEntity.getFromUserName(), xmlEntity.getToUserName(), result);
return result;
}
}
2.2 解析接收到的xml數(shù)據(jù)，此處有兩個類，ReceiveXmlEntity.java和ReceiveXmlProcess.java，通過反射的機(jī)制動態(tài)調(diào)用實(shí)體類中的set方法，可以避免很多重復(fù)的判斷，提高代碼效率，代碼如下：package demo.entity;
/**
* 接收到的微信xml實(shí)體類
* @author pamchen-1
*
*/
public class ReceiveXmlEntity {
private String ToUserName="";
private String FromUserName="";
private String CreateTime="";
private String MsgType="";
private String MsgId="";
private String Event="";
private String EventKey="";
private String Ticket="";
private String Latitude="";
private String Longitude="";
private String Precision="";
private String PicUrl="";
private String MediaId="";
private String Title="";
private String Description="";
private String Url="";
private String Location_X="";
private String Location_Y="";
private String Scale="";
private String Label="";
private String Content="";
private String Format="";
private String Recognition="";
public String getRecognition() {
return Recognition;
}
public void setRecognition(String recognition) {
Recognition = recognition;
}
public String getFormat() {
return Format;
}
public void setFormat(String format) {
Format = format;
}
public String getContent() {
return Content;
}
public void setContent(String content) {
Content = content;
}
public String getLocation_X() {
return Location_X;
}
public void setLocation_X(String locationX) {
Location_X = locationX;
}
public String getLocation_Y() {
return Location_Y;
}
public void setLocation_Y(String locationY) {
Location_Y = locationY;
}
public String getScale() {
return Scale;
}
public void setScale(String scale) {
Scale = scale;
}
public String getLabel() {
return Label;
}
public void setLabel(String label) {
Label = label;
}
public String getTitle() {
return Title;
}
public void setTitle(String title) {
Title = title;
}
public String getDescription() {
return Description;
}
public void setDescription(String description) {
Description = description;
}
public String getUrl() {
return Url;
}
public void setUrl(String url) {
Url = url;
}
public String getPicUrl() {
return PicUrl;
}
public void setPicUrl(String picUrl) {
PicUrl = picUrl;
}
public String getMediaId() {
return MediaId;
}
public void setMediaId(String mediaId) {
MediaId = mediaId;
}
public String getEventKey() {
return EventKey;
}
public void setEventKey(String eventKey) {
EventKey = eventKey;
}
public String getTicket() {
return Ticket;
}
public void setTicket(String ticket) {
Ticket = ticket;
}
public String getLatitude() {
return Latitude;
}
public void setLatitude(String latitude) {
Latitude = latitude;
}
public String getLongitude() {
return Longitude;
}
public void setLongitude(String longitude) {
Longitude = longitude;
}
public String getPrecision() {
return Precision;
}
public void setPrecision(String precision) {
Precision = precision;
}
public String getEvent() {
return Event;
}
public void setEvent(String event) {
Event = event;
}
public String getMsgId() {
return MsgId;
}
public void setMsgId(String msgId) {
MsgId = msgId;
}
public String getToUserName() {
return ToUserName;
}
public void setToUserName(String toUserName) {
ToUserName = toUserName;
}
public String getFromUserName() {
return FromUserName;
}
public void setFromUserName(String fromUserName) {
FromUserName = fromUserName;
}
public String getCreateTime() {
return CreateTime;
}
public void setCreateTime(String createTime) {
CreateTime = createTime;
}
public String getMsgType() {
return MsgType;
}
public void setMsgType(String msgType) {
MsgType = msgType;
}
}package demo.process;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.Iterator;
import org.dom4j.Document;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;
import demo.entity.ReceiveXmlEntity;
/**
* 解析接收到的微信xml，返回消息對象
* @author pamchen-1
*
*/
public class ReceiveXmlProcess {
/**
* 解析微信xml消息
* @param strXml
* @return
*/
public ReceiveXmlEntity getMsgEntity(String strXml){
ReceiveXmlEntity msg = null;
try {
if (strXml.length() <= 0 || strXml == null)
return null;
// 將字符串轉(zhuǎn)化為XML文檔對象
Document document = DocumentHelper.parseText(strXml);
// 獲得文檔的根節(jié)點(diǎn)
Element root = document.getRootElement();
// 遍歷根節(jié)點(diǎn)下所有子節(jié)點(diǎn)
Iterator> iter = root.elementIterator();
// 遍歷所有結(jié)點(diǎn)
msg = new ReceiveXmlEntity();
//利用反射機(jī)制，調(diào)用set方法
//獲取該實(shí)體的元類型
Class> c = Class.forName("demo.entity.ReceiveXmlEntity");
msg = (ReceiveXmlEntity)c.newInstance();//創(chuàng)建這個實(shí)體的對象
while(iter.hasNext()){
Element ele = (Element)iter.next();
//獲取set方法中的參數(shù)字段(實(shí)體類的屬性)
Field field = c.getDeclaredField(ele.getName());
//獲取set方法，field.getType())獲取它的參數(shù)數(shù)據(jù)類型
Method method = c.getDeclaredMethod("set"+ele.getName(), field.getType());
//調(diào)用set方法
method.invoke(msg, ele.getText());
}
} catch (Exception e) {
// TODO: handle exception
System.out.println("xml 格式異常: "+ strXml);
e.printStackTrace();
}
return msg;
}
}
2.3 調(diào)用圖靈機(jī)器人api接口，獲取智能回復(fù)內(nèi)容：package demo.process;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;
import org.json.JSONException;
import org.json.JSONObject;
/**
* 調(diào)用圖靈機(jī)器人api接口，獲取智能回復(fù)內(nèi)容
* @author pamchen-1
*
*/
public class TulingApiProcess {
/**
* 調(diào)用圖靈機(jī)器人api接口，獲取智能回復(fù)內(nèi)容，解析獲取自己所需結(jié)果
* @param content
* @return
*/
public String getTulingResult(String content){
/** 此處為圖靈api接口，參數(shù)key需要自己去注冊申請，先以11111111代替 */
String apiUrl = "http://www.tuling123.com/openapi/api?key=11111111&info=";
String param = "";
try {
param = apiUrl+URLEncoder.encode(content,"utf-8");
} catch (UnsupportedEncodingException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} //將參數(shù)轉(zhuǎn)為url編碼
/** 發(fā)送httpget請求 */
HttpGet request = new HttpGet(param);
String result = "";
try {
HttpResponse response = HttpClients.createDefault().execute(request);
if(response.getStatusLine().getStatusCode()==200){
result = EntityUtils.toString(response.getEntity());
}
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
/** 請求失敗處理 */
if(null==result){
return "對不起，你說的話真是太高深了……";
}
try {
JSONObject json = new JSONObject(result);
//以code=100000為例，參考圖靈機(jī)器人api文檔
if(100000==json.getInt("code")){
result = json.getString("text");
}
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return result;
}
}
2.4 將結(jié)果封裝為微信規(guī)定的xml格式，并返回給1.1中創(chuàng)建的servlet接口。package demo.process;
import java.util.Date;
/**
* 封裝最終的xml格式結(jié)果
* @author pamchen-1
*
*/
public class FormatXmlProcess {
/**
* 封裝文字類的返回消息
* @param to
* @param from
* @param content
* @return
*/
public String formatXmlAnswer(String to, String from, String content) {
StringBuffer sb = new StringBuffer();
Date date = new Date();
sb.append("
sb.append(to);
sb.append("]]>
sb.append(from);
sb.append("]]>
");sb.append(date.getTime());
sb.append("
sb.append(content);
sb.append("]]>
0");return sb.toString();
}
}
總結(jié)，以上便是微信公眾平臺開發(fā)的全部流程，整體來看并不復(fù)雜，要非常感謝圖靈機(jī)器人提供的api接口，幫我們解決了智能回復(fù)這一高難度問題。其他類型的消息處理與示例中類似，有興趣的開發(fā)者可以聯(lián)系我進(jìn)行交流學(xué)習(xí)，希望本文對大家有所幫助。
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