微信公众号开发之回复图文消息java代码

微信公众号开发之回复图文消息，供大家参考，具体内容如下

图文消息的主要参数说明

通过微信官方的消息接口指南，可以看到对图文消息的参数介绍，如下图所示：

从上图可以了解到：

1、图文消息的个数限制为10，也就是图文中articlecount的值（图文消息的个数，限制在10条以内）

2、对于图文消息，第一条图文的图片显示为大图，其他图文的图片显示为小图。

3、第一条图文的图片大小建议为640*320，其他图文的图片建议为80*80

下面开始实现：

请求消息的基类：

import com.thoughtworks.xstream.annotations.xstreamalias;

import java.io.serializable;

/**
 * @author inchlifc
 */
public class basemessage implements serializable {
  @xstreamalias("tousername")
  @xstreamcdata
  private string tousername;

  @xstreamalias("fromusername")
  @xstreamcdata
  private string fromusername;

  @xstreamalias("createtime")
  private long createtime;

  @xstreamalias("msgtype")
  @xstreamcdata
  private string msgtype;

  public basemessage() {
    super();
  }

  public basemessage(string fromusername, string tousername) {
    super();
    fromusername = fromusername;
    tousername = tousername;
    createtime = system.currenttimemillis();
  }

  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 long getcreatetime() {
    return createtime;
  }

  public void setcreatetime(long createtime) {
    createtime = createtime;
  }

  public string getmsgtype() {
    return msgtype;
  }

  public void setmsgtype(string msgtype) {
    msgtype = msgtype;
  }
}

图文消息类：

import com.thoughtworks.xstream.annotations.xstreamalias;

import java.util.list;

@xstreamalias("xml")
public class articlesmessage extends basemessage {
  @xstreamalias("articlecount")
  private int articlecount;

  @xstreamalias("articles")
  private list<articlesitem> articles;

  public int getarticlecount() {
    return articlecount;
  }

  public void setarticlecount(int articlecount) {
    articlecount = articlecount;
  }

  public list<articlesitem> getarticles() {
    return articles;
  }

  public void setarticles(list<articlesitem> articles) {
    articles = articles;
  }
}

图文消息中的articles类：

import com.thoughtworks.xstream.annotations.xstreamalias;

import java.util.list;
@xstreamalias("articles")
public class articles {
  private list<articlesitem> articles;
}

图文消息中的articlesitem类：

import com.thoughtworks.xstream.annotations.xstreamalias;

import java.io.serializable;

@xstreamalias("item")
public class articlesitem implements serializable {
  @xstreamalias("title")
  @xstreamcdata
  private string title;

  @xstreamalias("description")
  @xstreamcdata
  private string description;

  @xstreamalias("picurl")
  @xstreamcdata
  private string picurl;

  @xstreamalias("url")
  @xstreamcdata
  private string url;

  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 getpicurl() {
    return picurl;
  }

  public void setpicurl(string picurl) {
    picurl = picurl;
  }

  public string geturl() {
    return url;
  }

  public void seturl(string url) {
    url = url;
  }
} 

service层实现方法：

封装方法

/**
   * 获取博客图文消息
   *
   * @param custermname
   * @param servername
   * @param createtime
   * @return
   */
  private articlesmessage getblogmessage(string custermname, string servername, long createtime) {
    articlesmessage outputmsg = new articlesmessage();
    outputmsg.setfromusername(servername);
    outputmsg.settousername(custermname);
    outputmsg.setcreatetime(createtime);
    outputmsg.setmsgtype(msgtype.news.getvalue());

    list<articlesitem> articles = new arraylist<>();

    articlesitem item1 = new articlesitem();
    item1.settitle("晚天吹凉风");
    item1.setdescription("点击进入晚天吹凉风博客");
    item1.setpicurl(wechatconstant.base_server + "resources/images/wechat/a.png");
    item1.seturl("https://my.oschina.net/inchlifc/blog");
    articles.add(item1);

    outputmsg.setarticles(articles);
    outputmsg.setarticlecount(articles.size());

    return outputmsg;
  }

判断如果输入数字1，返回图文消息推送

// 处理接收消息
    servletinputstream in = request.getinputstream();
    // 将post流转换为xstream对象
    xstream xs = new xstream();
    xs = serializexmlutil.createxstream();
    xstream.setupdefaultsecurity(xs);
    xs.allowtypes(new class[]{textmessage.class, inputmessage.class, articlesmessage.class});
    xs.processannotations(inputmessage.class);
    xs.processannotations(articlesmessage.class);
    xs.processannotations(imagemessage.class);
    // 将指定节点下的xml节点数据映射为对象
    xs.alias("xml", inputmessage.class);
    // 将流转换为字符串
    stringbuilder xmlmsg = new stringbuilder();
    byte[] b = new byte[4096];
    for (int n; (n = in.read(b)) != -1; ) {
      xmlmsg.append(new string(b, 0, n, "utf-8"));
    }
    logger.info("收到消息====" + xmlmsg.tostring());
    // 将xml内容转换为inputmessage对象
    inputmessage inputmsg = (inputmessage) xs.fromxml(xmlmsg.tostring());

    // 服务端
    string servername = inputmsg.gettousername();
    // 客户端
    string custermname = inputmsg.getfromusername();
    // 接收时间
    long createtime = inputmsg.getcreatetime();
    // 返回时间
    long returntime = calendar.getinstance().gettimeinmillis() / 1000;
    //接手文本内容
    string content = inputmsg.getcontent();
    // 取得消息类型
    string msgtype = inputmsg.getmsgtype();

if (msgtype.text.getvalue().equals(msgtype)) {
        //输入1 推送博客信息
        if ("1".equals(content)) {
          logger.info("收到文本1");
          articlesmessage outputmsg = getblogmessage(custermname, servername, returntime);
          logger.info("返回博客图文消息===" + xs.toxml(outputmsg));
          response.getwriter().write(xs.toxml(outputmsg));
        }
} 

运行结果：

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