图片、语音消息回复
一、图片、语音消息回复xml结构
1.1 回复图片消息XML
<xml>
<ToUserName><![CDATA[toUser]]></ToUserName>
<FromUserName><![CDATA[fromUser]]></FromUserName>
<CreateTime>12345678</CreateTime>
<MsgType><![CDATA[voice]]></MsgType>
<Voice>
<MediaId><![CDATA[media_id]]></MediaId>
</Voice>
</xml>
1.2 图片消息的bean
/**
*
* 类名称: Image
* 类描述: 图片
* @author yuanjun
* 创建时间:2017年12月8日下午6:42:39
*/
public class Image {
private String MediaId;//素材id
public String getMediaId() {
return MediaId;
}
public void setMediaId(String mediaId) {
MediaId = mediaId;
}
}
import com.yuanjun.weixindemo.bean.BaseMessage;
import com.yuanjun.weixindemo.bean.Image;
/**
*
* 类名称: ImageMessage
* 类描述: 图片消息
* @author yuanjun
* 创建时间:2017年12月8日下午6:44:10
*/
public class ImageMessage extends BaseMessage{
private Image Image;//Image节点
public Image getImage() {
return Image;
}
public void setImage(Image image) {
Image = image;
}
}
注明:如何根据回复信息的xml结构,构建实体类,看xml的节点特征,名字需要对应,并且注意大小写
1.3回复语音消息XML结构结构
<xml>
<ToUserName><![CDATA[toUser]]></ToUserName>
<FromUserName><![CDATA[fromUser]]></FromUserName>
<CreateTime>12345678</CreateTime>
<MsgType><![CDATA[image]]></MsgType>
<Image>
<MediaId><![CDATA[media_id]]></MediaId>
</Image>
</xml>
1.4 语音消息bean
/**
*
* 类名称: Voice
* 类描述:
* @author yuanjun
* 创建时间:2017年12月8日下午6:49:41
*/
public class Voice {
private String MediaId;
public String getMediaId() {
return MediaId;
}
public void setMediaId(String mediaId) {
MediaId = mediaId;
}
}
/**
*
* 类名称: VoiceMessage
* 类描述: 语音消息
* @author yuanjun
* 创建时间:2017年12月8日下午6:48:36
*/
public class VoiceMessage extends BaseMessage{
private Voice Voice;
public Voice getVoice() {
return Voice;
}
public void setVoice(Voice voice) {
Voice = voice;
}
}
二、 获取MediaId
通过素材管理中的接口上传多媒体文件,得到的id。图片,语音,视频都是类似的结构。可在开发文档的素材管理新增临时素材找到如何获取
MediaId,通过调用接口获取MediaId。具体可参考https://mp.weixin.qq.com/wiki?t=resource/res_main&id=mp1444738726的文档说明。由于个人
订阅号没有接口权限,此时需要采用测试账号进行接口开发。在开发管理选择公众平台的测试账号,并开通。
2.1 获取的步骤参考文档https://mp.weixin.qq.com/wiki?t=resource/res_main&id=mp1444738726
注意:在获取access_token时,需将appid和秘钥换成测试账号的,可参考http://blog.csdn.net/shenbug/article/details/78752888
import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.security.KeyManagementException;
import java.security.NoSuchAlgorithmException;
import java.security.NoSuchProviderException;
import net.sf.json.JSONObject;
/**
*
* 类名称: UploadUtil
* 类描述: 文件上传工具类
* @author yuanjun
* 创建时间:2017年12月8日下午6:57:18
*/
public class UploadUtil {
private static final String UPLOAD_URL ="https://api.weixin.qq.com/cgi-bin/media/upload?access_token=ACCESS_TOKEN&type=TYPE";
/**
* 文件上传
* @param filePath
* @param accessToken
* @param type
* @return
* @throws IOException
* @throws NoSuchAlgorithmException
* @throws NoSuchProviderException
* @throws KeyManagementException
*/
public static String upload(String filePath, String accessToken,String type) throws IOException, NoSuchAlgorithmException, NoSuchProviderException, KeyManagementException {
File file = new File(filePath);
if (!file.exists() || !file.isFile()) {
throw new IOException("文件不存在");
}
String url = UPLOAD_URL.replace("ACCESS_TOKEN", accessToken).replace("TYPE",type);
URL urlObj = new URL(url);
//连接
HttpURLConnection con = (HttpURLConnection) urlObj.openConnection();
con.setRequestMethod("POST");
con.setDoInput(true);
con.setDoOutput(true);
con.setUseCaches(false);
//设置请求头信息
con.setRequestProperty("Connection", "Keep-Alive");
con.setRequestProperty("Charset", "UTF-8");
//设置边界
String BOUNDARY = "----------" + System.currentTimeMillis();
con.setRequestProperty("Content-Type", "multipart/form-data; boundary=" + BOUNDARY);
StringBuilder sb = new StringBuilder();
sb.append("--");
sb.append(BOUNDARY);
sb.append("\r\n");
sb.append("Content-Disposition: form-data;name=\"file\";filename=\"" + file.getName() + "\"\r\n");
sb.append("Content-Type:application/octet-stream\r\n\r\n");
byte[] head = sb.toString().getBytes("utf-8");
//获得输出流
OutputStream out = new DataOutputStream(con.getOutputStream());
//输出表头
out.write(head);
//文件正文部分
//把文件已流文件的方式 推入到url中
DataInputStream in = new DataInputStream(new FileInputStream(file));
int bytes = 0;
byte[] bufferOut = new byte[1024];
while ((bytes = in.read(bufferOut)) != -1) {
out.write(bufferOut, 0, bytes);
}
in.close();
//结尾部分
byte[] foot = ("\r\n--" + BOUNDARY + "--\r\n").getBytes("utf-8");//定义最后数据分隔线
out.write(foot);
out.flush();
out.close();
StringBuffer buffer = new StringBuffer();
BufferedReader reader = null;
String result = null;
try {
//定义BufferedReader输入流来读取URL的响应
reader = new BufferedReader(new InputStreamReader(con.getInputStream()));
String line = null;
while ((line = reader.readLine()) != null) {
buffer.append(line);
}
if (result == null) {
result = buffer.toString();
}
} catch (IOException e) {
e.printStackTrace();
} finally {
if (reader != null) {
reader.close();
}
}
JSONObject jsonObj = JSONObject.fromObject(result);
String typeName = "media_id";
if("thumb".equals(type)){
typeName = type + "_media_id";
}
String mediaId = jsonObj.getString(typeName);
return mediaId;
}
}
2.2 测试
三、封装信息回复xml
import java.io.IOException;
import java.security.KeyManagementException;
import java.security.NoSuchAlgorithmException;
import java.security.NoSuchProviderException;
import java.util.Date;
import com.thoughtworks.xstream.XStream;
import com.yuanjun.weixindemo.bean.Image;
import com.yuanjun.weixindemo.bean.ImageMessage;
import com.yuanjun.weixindemo.util.BaseMessageUtil;
import com.yuanjun.weixindemo.util.UploadUtil;
import com.yuanjun.weixindemo.util.WeiXinUtil;
public class ImageMessageUtil implements BaseMessageUtil<ImageMessage> {
/**
* 将信息转为xml格式
*/
public String messageToxml(ImageMessage imageMessage) {
XStream xtream = new XStream();
xtream.alias("xml", imageMessage.getClass());
xtream.alias("Image", new Image().getClass());
return xtream.toString();
}
/**
* 封装信息
*/
public String initMessage(String FromUserName, String ToUserName) {
Image image = new Image();
image.setMediaId(getmediaId());
ImageMessage message = new ImageMessage();
message.setFromUserName(ToUserName);
message.setToUserName(FromUserName);
message.setCreateTime(new Date().getTime());
message.setImage(image);
return messageToxml(message);
}
/**
* 获取Media
* @return
*/
public String getmediaId(){
String path = "f:/1.jpg";
String accessToken = WeiXinUtil.getAccess_Token();
String mediaId = null;
try {
mediaId = UploadUtil.upload(path, accessToken, "image");
} catch (KeyManagementException | NoSuchAlgorithmException
| NoSuchProviderException | IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return mediaId;
}
}
四、控制器post请求,回复信息,实现回复图片,显示图片
@RequestMapping(value = "wxdemo",method=RequestMethod.POST)
public void dopost(HttpServletRequest request,HttpServletResponse response){
response.setCharacterEncoding("utf-8");
PrintWriter out = null;
//将微信请求xml转为map格式,获取所需的参数
Map<String,String> map = MessageUtil.xmlToMap(request);
String ToUserName = map.get("ToUserName");
String FromUserName = map.get("FromUserName");
String MsgType = map.get("MsgType");
String Content = map.get("Content");
String message = null;
//处理文本类型,实现输入1,回复相应的封装的内容
if("text".equals(MsgType)){
if("图片".equals(Content)){
ImageMessageUtil util = new ImageMessageUtil();
message = util.initMessage(FromUserName, ToUserName);
}else{
TextMessageUtil textMessage = new TextMessageUtil();
message = textMessage.initMessage(FromUserName, ToUserName,Content);
}
}
try {
out = response.getWriter();
out.write(message);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
out.close();
}
五、效果(只展示图片的效果,语言可参照图片的方法完成)
注意:需要在关测试的公众号,才能显示功能,否则在原来的公众号会出现该公众号提供的服务出现故障,请稍后再试。