目录

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：

请求消息的基类

图文消息类

图文消息中的Articles类

图文消息中的ArticlesItem类

service层实现方法

封装方法

运行结果

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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")@XStreamCDATAprivate String ToUserName;@XStreamAlias("FromUserName")@XStreamCDATAprivate String FromUserName;@XStreamAlias("CreateTime")private Long CreateTime;@XStreamAlias("MsgType")@XStreamCDATAprivate 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")@XStreamCDATAprivate String Title;@XStreamAlias("Description")@XStreamCDATAprivate String Description;@XStreamAlias("PicUrl")@XStreamCDATAprivate String PicUrl;@XStreamAlias("Url")@XStreamCDATAprivate 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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