大家好，今天我給大家帶來的是微信開發之發送消息。
用戶關注微信號，那麼肯定是爲了得到某種功能，假如用戶發送文本信息“電話”，我們能給用戶發送我的聯繫電話，這樣是不是很友好呢？
好，昨天我們已經接受到了用戶發送的信息，今天我們就對用戶進行回覆消息吧！
首先，回覆消息有6個種類：
1 回覆文本消息
2 回覆圖片消息
3 回覆語音消息
4 回覆視頻消息
5 回覆音樂消息
6 回覆圖文消息
我們先來做一個簡單的回覆文本消息的例子吧！
回覆文本消息
<xml>
<ToUserName><![CDATA[toUser]]></ToUserName>
<FromUserName><![CDATA[fromUser]]></FromUserName>
<CreateTime>12345678</CreateTime>
<MsgType><![CDATA[text]]></MsgType>
<Content><![CDATA[你好]]></Content>
</xml>/*
* 微信公衆平臺(JAVA) SDK
*
* Copyright (c) 2014, Ansitech Network Technology Co.,Ltd All rights reserved.
* http://www.ansitech.com/weixin/sdk/
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.ansitech.weixin.sdk.message;
/**
* 微信發送被動響應消息的抽象類
*
* <p>應用程序需要定義一個子類，來實現具體方法</p>
*
* @author qsyang<[email protected]>
*/
public abstract class OutputMessage implements java.io.Serializable {
/**
* 接收方帳號（收到的OpenID）
*/
private String ToUserName;
/**
* 開發者微信號
*/
private String FromUserName;
/**
* 消息創建時間 （整型）
*/
private Long CreateTime;
/**
* 獲取 接收方帳號（收到的OpenID）
*
* @return 接收方帳號（收到的OpenID）
*/
public String getToUserName() {
return ToUserName;
}
/**
* 設置 接收方帳號（收到的OpenID）
*
* @return 接收方帳號（收到的OpenID）
*/
public String getFromUserName() {
return FromUserName;
}
/**
* 獲取 消息創建時間 （整型）
*
* @return 消息創建時間 （整型）
*/
public Long getCreateTime() {
return CreateTime;
}
/**
* 獲取 消息類型
*
* @return 消息類型
*/
public abstract String getMsgType();
}/*
* 微信公衆平臺(JAVA) SDK
*
* Copyright (c) 2014, Ansitech Network Technology Co.,Ltd All rights reserved.
* http://www.ansitech.com/weixin/sdk/
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.ansitech.weixin.sdk.message;
/**
* 這個類實現了<tt>OutputMessage</tt>，用來回覆文本消息
*
* <p>提供了獲取文本內容<code>getContent()</code>等主要方法.</p>
*
* @author qsyang<[email protected]>
*/
public class TextOutputMessage extends OutputMessage {
/**
* 消息類型:文本消息
*/
private String MsgType = "text";
/**
* 文本消息
*/
private String Content;
/**
* 創建一個新的 Output Message.並且MsgType的值爲text.
*/
public TextOutputMessage() {
}
/**
* 創建一個自定義文本內容content的Output Message.
*
* @param content 文本內容
*/
public TextOutputMessage(String content) {
Content = content;
}
/**
* 獲取 消息類型
*
* @return 消息類型
*/
@Override
public String getMsgType() {
return MsgType;
}
/**
* 獲取 文本消息
*
* @return 文本消息
*/
public String getContent() {
return Content;
}
/**
* 設置 文本消息
*
* @param content 文本消息
*/
public void setContent(String content) {
Content = content;
}
}package com.ansitech.weixin.sdk;
import com.ansitech.weixin.sdk.message.InputMessage;
import com.ansitech.weixin.sdk.message.MsgType;
import com.ansitech.weixin.sdk.message.OutputMessage;
import com.ansitech.weixin.sdk.message.TextOutputMessage;
import com.ansitech.weixin.sdk.util.SHA1;
import com.thoughtworks.xstream.XStream;
import com.thoughtworks.xstream.core.util.QuickWriter;
import com.thoughtworks.xstream.io.HierarchicalStreamWriter;
import com.thoughtworks.xstream.io.xml.DomDriver;
import com.thoughtworks.xstream.io.xml.PrettyPrintWriter;
import com.thoughtworks.xstream.io.xml.XppDriver;
...
public class WeixinUrlFilter implements Filter {
...
@Override
public void doFilter(ServletRequest req, ServletResponse res,
FilterChain chain) throws IOException, ServletException {
HttpServletRequest request = (HttpServletRequest) req;
HttpServletResponse response = (HttpServletResponse) res;
...
if (isGet) {
...
} else {
...
//根據消息類型獲取對應的消息內容
if (msgType.equals(MsgType.Text.toString())) {
try {
//文本消息
System.out.println("開發者微信號：" + inputMsg.getToUserName());
System.out.println("發送方帳號：" + inputMsg.getFromUserName());
System.out.println("消息創建時間：" + inputMsg.getCreateTime());
System.out.println("消息內容：" + inputMsg.getContent());
System.out.println("消息Id：" + inputMsg.getMsgId());
//發送文本消息 start
XStream xstream = new XStream(new XppDriver() {
@Override
public HierarchicalStreamWriter createWriter(Writer out) {
return new PrettyPrintWriter(out) {
@Override
protected void writeText(QuickWriter writer,
String text) {
if (!text.startsWith("<![CDATA[")) {
text = "<![CDATA[" + text + "]]>";
}
writer.write(text);
}
};
}
});
//創建文本發送消息對象
TextOutputMessage outputMsg = new TextOutputMessage();
outputMsg.setContent("你的消息已經收到，謝謝！");
setOutputMsgInfo(outputMsg, inputMsg);
//設置對象轉換的XML根節點爲xml
xstream.alias("xml", outputMsg.getClass());
//將對象轉換爲XML字符串
String xml = xstream.toXML(outputMsg);
//將內容發送給微信服務器，發送到用戶手機
response.getWriter().write(xml);
} catch (Exception ex) {
System.out.println("消息接受和發送出現異常!");
ex.printStackTrace();
}
}
}
}
//設置詳細信息
private static void setOutputMsgInfo(OutputMessage oms,
InputMessage msg) throws Exception {
// 設置發送信息
Class<?> outMsg = oms.getClass().getSuperclass();
Field CreateTime = outMsg.getDeclaredField("CreateTime");
Field ToUserName = outMsg.getDeclaredField("ToUserName");
Field FromUserName = outMsg.getDeclaredField("FromUserName");
ToUserName.setAccessible(true);
CreateTime.setAccessible(true);
FromUserName.setAccessible(true);
CreateTime.set(oms, new Date().getTime());
ToUserName.set(oms, msg.getFromUserName());
FromUserName.set(oms, msg.getToUserName());
}
...
}
如有疑問，請留言。
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