微信公众号开发之生成带参数的二维码（六）

睦壹發表於 2020-1-19 14:40:00

微信公众号开发之生成带参数的二维码（六）

为了满足用户渠道推广分析和用户帐号绑定等场景的需要，公众平台提供了生成带参数二维码的接口。使用该接口可以获得多个带不同场景值的二维码，用户扫描后，公众号可以接收到事件推送。
目前有2种类型的二维码：
1、临时二维码，是有过期时间的，最长可以设置为在二维码生成后的30天（即2592000秒）后过期，但能够生成较多数量。临时二维码主要用于帐号绑定等不要求二维码永久保存的业务场景 2、永久二维码，是无过期时间的，但数量较少（目前为最多10万个）。永久二维码主要用于适用于帐号绑定、用户来源统计等场景。
用户扫描带场景值二维码时，可能推送以下两种事件：
如果用户还未关注公众号，则用户可以关注公众号，关注后微信会将带场景值关注事件推送给开发者。
如果用户已经关注公众号，在用户扫描后会自动进入会话，微信也会将带场景值扫描事件推送给开发者。
获取带参数的二维码的过程包括两步，首先创建二维码ticket，然后凭借ticket到指定URL换取二维码。
<div class="cke_widget_wrapper cke_widget_block cke_widget_codeSnippet cke_widget_wrapper_has cke_widget_selected" data-cke-widget-wrapper="1" data-cke-filter="off" data-cke-display-name="代码段" data-cke-widget-id="8">
<pre class="has cke_widget_element" data-cke-widget-data="{&quot;code&quot;:&quot;http请求方式: POST\nURL: https://api.weixin.qq.com/cgi-bin/qrcode/create?access_token=TOKEN\nPOST数据格式：json\nPOST数据例子：{\&quot;expire_seconds\&quot;: 604800, \&quot;action_name\&quot;: \&quot;QR_SCENE\&quot;, \&quot;action_info\&quot;: {\&quot;scene\&quot;: {\&quot;scene_id\&quot;: 123}}}\n\n或者也可以使用以下POST数据创建字符串形式的二维码参数：\n{\&quot;expire_seconds\&quot;: 604800, \&quot;action_name\&quot;: \&quot;QR_STR_SCENE\&quot;, \&quot;action_info\&quot;: {\&quot;scene\&quot;: {\&quot;scene_str\&quot;: \&quot;test\&quot;}}}&quot;,&quot;classes&quot;:{&quot;has&quot;:1}}" data-cke-widget-upcasted="1" data-cke-widget-keep-attr="0" data-widget="codeSnippet"><code class="hljs">http请求方式: POST
URL: https://api.weixin.qq.com/cgi-bin/qrcode/create?access_token=TOKEN
POST数据格式：json
POST数据例子：{"expire_seconds": 604800, "action_name": "QR_SCENE", "action_info": {"scene": {"scene_id": 123}}}

或者也可以使用以下POST数据创建字符串形式的二维码参数：
{"expire_seconds": 604800, "action_name": "QR_STR_SCENE", "action_info": {"scene": {"scene_str": "test"}}}</code></pre>
<img src="data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw=="></div>
参数说明
<table class=" cke_show_border">
<thead>
<tr><th>参数</th><th>说明</th></tr>
</thead>
<tbody>
<tr>
<td>expire_seconds</td>
<td>该二维码有效时间，以秒为单位。最大不超过2592000（即30天），此字段如果不填，则默认有效期为30秒。</td>
</tr>
<tr>
<td>action_name</td>
<td>二维码类型，QR_SCENE为临时的整型参数值，QR_STR_SCENE为临时的字符串参数值，QR_LIMIT_SCENE为永久的整型参数值，QR_LIMIT_STR_SCENE为永久的字符串参数值</td>
</tr>
<tr>
<td>action_info</td>
<td>二维码详细信息</td>
</tr>
<tr>
<td>scene_id</td>
<td>场景值ID，临时二维码时为32位非0整型，永久二维码时最大值为100000（目前参数只支持1--100000）</td>
</tr>
<tr>
<td>scene_str</td>
<td>场景值ID（字符串形式的ID），字符串类型，长度限制为1到64</td>
</tr>
</tbody>
</table>
返回说明
正确的Json返回结果:
<div class="cke_widget_wrapper cke_widget_block cke_widget_codeSnippet cke_widget_wrapper_has cke_widget_selected" data-cke-widget-wrapper="1" data-cke-filter="off" data-cke-display-name="代码段" data-cke-widget-id="7">
<pre class="has cke_widget_element" data-cke-widget-data="{&quot;code&quot;:&quot;{\&quot;ticket\&quot;:\&quot;gQH47joAAAAAAAAAASxodHRwOi8vd2VpeGluLnFxLmNvbS9xL2taZ2Z3TVRtNzJXV1Brb3ZhYmJJAAIEZ23sUwMEmm\n3sUw==\&quot;,\&quot;expire_seconds\&quot;:60,\&quot;url\&quot;:\&quot;http://weixin.qq.com/q/kZgfwMTm72WWPkovabbI\&quot;}\n&quot;,&quot;classes&quot;:{&quot;has&quot;:1}}" data-cke-widget-upcasted="1" data-cke-widget-keep-attr="0" data-widget="codeSnippet"><code class="hljs">{"ticket":"gQH47joAAAAAAAAAASxodHRwOi8vd2VpeGluLnFxLmNvbS9xL2taZ2Z3TVRtNzJXV1Brb3ZhYmJJAAIEZ23sUwMEmm
3sUw==","expire_seconds":60,"url":"http://weixin.qq.com/q/kZgfwMTm72WWPkovabbI"}
</code></pre>
<img class="cke_reset cke_widget_drag_handler lazyload" title="点击并拖拽以移动" alt="" width="15" height="15" data-cke-widget-drag-handler="1" data-src="data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw=="></div>
<table class=" cke_show_border">
<thead>
<tr><th>参数</th><th>说明</th></tr>
</thead>
<tbody>
<tr>
<td>ticket</td>
<td>获取的二维码ticket，凭借此ticket可以在有效时间内换取二维码。</td>
</tr>
<tr>
<td>expire_seconds</td>
<td>该二维码有效时间，以秒为单位。最大不超过2592000（即30天）。</td>
</tr>
<tr>
<td>url</td>
<td>二维码图片解析后的地址，开发者可根据该地址自行生成需要的二维码图片</td>
</tr>
</tbody>
</table>
通过ticket换取二维码
获取二维码ticket后，开发者可用ticket换取二维码图片。请注意，本接口无须登录态即可调用。
请求说明
<div class="cke_widget_wrapper cke_widget_block cke_widget_codeSnippet cke_widget_wrapper_has cke_widget_selected" data-cke-widget-wrapper="1" data-cke-filter="off" data-cke-display-name="代码段" data-cke-widget-id="6">
<pre class="has cke_widget_element" data-cke-widget-data="{&quot;code&quot;:&quot;HTTP GET请求（请使用https协议）https://mp.weixin.qq.com/cgi-bin/showqrcode?ticket=TICKET\n提醒：TICKET记得进行UrlEncode&quot;,&quot;classes&quot;:{&quot;has&quot;:1}}" data-cke-widget-upcasted="1" data-cke-widget-keep-attr="0" data-widget="codeSnippet"><code class="hljs">HTTP GET请求（请使用https协议）https://mp.weixin.qq.com/cgi-bin/showqrcode?ticket=TICKET
提醒：TICKET记得进行UrlEncode</code></pre>
<img class="cke_reset cke_widget_drag_handler lazyload" title="点击并拖拽以移动" alt="" width="15" height="15" data-cke-widget-drag-handler="1" data-src="data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw=="></div>
 一、新建一个QrCodeUtil里面包含三个方法，分别是封装请求的参数，产生二维码和获得二维码
<span class="cke_widget_wrapper cke_widget_inline cke_widget_image cke_image_nocaption cke_widget_selected" data-cke-widget-wrapper="1" data-cke-filter="off" data-cke-display-name="图像" data-cke-widget-id="5"><img class="has cke_widget_element lazyload" alt="" width="1200" height="894" src="https://img-blog.csdnimg.cn/20200102180647218.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTM1MjEyMjA=,size_16,color_FFFFFF,t_70" data-cke-widget-data="{&quot;hasCaption&quot;:false,&quot;src&quot;:&quot;https://img-blog.csdnimg.cn/20200102180647218.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTM1MjEyMjA=,size_16,color_FFFFFF,t_70&quot;,&quot;alt&quot;:&quot;&quot;,&quot;width&quot;:&quot;1200&quot;,&quot;height&quot;:&quot;894&quot;,&quot;lock&quot;:true,&quot;align&quot;:&quot;none&quot;,&quot;classes&quot;:{&quot;has&quot;:1}}" data-cke-widget-upcasted="1" data-cke-widget-keep-attr="0" data-widget="image" data-src="https://img-blog.csdnimg.cn/20200102180647218.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTM1MjEyMjA=,size_16,color_FFFFFF,t_70"><img class="cke_reset cke_widget_drag_handler lazyload" title="点击并拖拽以移动" alt="" width="15" height="15" data-cke-widget-drag-handler="1" data-src="data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==">
<pre><code class="language-html hljs">QrCodeUtil.java</code></pre>
<pre><code class="language-html hljs">package com.xu.wemall.components.weixin; import com.alibaba.fastjson.JSONObject; import com.xu.wemall.commons.constants.URIConstant; import lombok.extern.slf4j.Slf4j; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Component; import org.springframework.web.client.RestTemplate; import java.io.UnsupportedEncodingException; import java.net.URLEncoder; import java.util.TreeMap; @Slf4j @Component public class QrCodeUtil { @Autowired private RestTemplate restTemplate; @Autowired private AccessTokenUtil accessTokenUtil; private String createQrCodeString(String sceneStr) { TreeMap<String, String> params = new TreeMap<>(); // output data JSONObject data = new JSONObject(); data.put("action_name", "QR_SCENE"); data.put("expire_seconds", 3600);//一小时 JSONObject scene = new JSONObject(); scene.put("scene_str", sceneStr); JSONObject actionInfo = new JSONObject(); actionInfo.put("scene", scene); data.put("action_info", actionInfo); return data.toJSONString(); } public JSONObject createQrCode(String sceneId) { String qrCodeString = this.createQrCodeString(sceneId); log.info("qrCodeString:{}", qrCodeString); String accessToken = accessTokenUtil.getAccessToken(); if (accessToken != null) { log.info("URL{}", URIConstant.CREATE_QRCODE_URL); String url = URIConstant.CREATE_QRCODE_URL.replace("ACCESS_TOKEN", accessToken); log.info("URL_ACCESS_TOKEN:{}", url); //将菜单对象转换成JSON字符串 //发起POST请求创建菜单 JSONObject jsonObject = restTemplate.postForObject(url, qrCodeString, JSONObject.class); return jsonObject; } return null; } public void showQrCode(String ticket) throws UnsupportedEncodingException { String TICKET = URLEncoder.encode(ticket, "utf-8"); log.info("URL{}", URIConstant.SHOW_QRCODE_URL); String url = URIConstant.SHOW_QRCODE_URL.replace("TICKET", TICKET); log.info("SHOW_QRCODE_URL:{}", url); //将菜单对象转换成JSON字符串 //发起POST请求创建菜单 restTemplate.getForObject(url, JSONObject.class); } } </code></pre>
二、我们新建一个controller用来提交我们的请求
<span class="cke_widget_wrapper cke_widget_inline cke_widget_image cke_image_nocaption cke_widget_selected" data-cke-widget-wrapper="1" data-cke-filter="off" data-cke-display-name="图像" data-cke-widget-id="4"><img class="has cke_widget_element lazyload" alt="" width="1200" height="888" src="https://img-blog.csdnimg.cn/20200102180820169.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTM1MjEyMjA=,size_16,color_FFFFFF,t_70" data-cke-widget-data="{&quot;hasCaption&quot;:false,&quot;src&quot;:&quot;https://img-blog.csdnimg.cn/20200102180820169.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTM1MjEyMjA=,size_16,color_FFFFFF,t_70&quot;,&quot;alt&quot;:&quot;&quot;,&quot;width&quot;:&quot;1200&quot;,&quot;height&quot;:&quot;888&quot;,&quot;lock&quot;:true,&quot;align&quot;:&quot;none&quot;,&quot;classes&quot;:{&quot;has&quot;:1}}" data-cke-widget-upcasted="1" data-cke-widget-keep-attr="0" data-widget="image" data-src="https://img-blog.csdnimg.cn/20200102180820169.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTM1MjEyMjA=,size_16,color_FFFFFF,t_70"><img class="cke_reset cke_widget_drag_handler lazyload" title="点击并拖拽以移动" alt="" width="15" height="15" data-cke-widget-drag-handler="1" data-src="data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==">
<pre><code class="language-html hljs">QrCodeWxController.java</code></pre>
<pre><code class="language-html hljs">package com.xu.wemall.controller.weixin; import com.alibaba.fastjson.JSONObject; import com.xu.wemall.components.weixin.QrCodeUtil; import io.swagger.annotations.Api; import io.swagger.annotations.ApiOperation; import lombok.extern.slf4j.Slf4j; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.bind.annotation.RestController; import java.io.UnsupportedEncodingException; /** * 类名称: LoginController * 类描述: 与微信对接登陆验证 * * @author yuanjun * 创建时间:2017年12月5日上午10:52:13 */ @Slf4j @RestController @Api(tags = "微信生成带参的二维码接口") @RequestMapping(value = "/weixin/qrcode") public class QrCodeWxController { @Autowired private QrCodeUtil qrCodeUtil; @ApiOperation(value = "创建带参的二维码") @RequestMapping(value = "/createQrCode", method = RequestMethod.POST) public Object createQrCode(String sceneId) { JSONObject jsonObject = qrCodeUtil.createQrCode(sceneId); return jsonObject; } @ApiOperation(value = "获取带参的二维码") @RequestMapping(value = "/showQrCode", method = RequestMethod.GET) public void showQrCode(String ticket) throws UnsupportedEncodingException { qrCodeUtil.showQrCode(ticket); } } </code></pre>
三、我们打开我们的swagger页面提交一下请求试试看
<span class="cke_widget_wrapper cke_widget_inline cke_widget_image cke_image_nocaption cke_widget_selected" data-cke-widget-wrapper="1" data-cke-filter="off" data-cke-display-name="图像" data-cke-widget-id="3"><img class="has cke_widget_element lazyload" alt="" width="1200" height="784" src="https://img-blog.csdnimg.cn/20200102181029576.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTM1MjEyMjA=,size_16,color_FFFFFF,t_70" data-cke-widget-data="{&quot;hasCaption&quot;:false,&quot;src&quot;:&quot;https://img-blog.csdnimg.cn/20200102181029576.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTM1MjEyMjA=,size_16,color_FFFFFF,t_70&quot;,&quot;alt&quot;:&quot;&quot;,&quot;width&quot;:&quot;1200&quot;,&quot;height&quot;:&quot;784&quot;,&quot;lock&quot;:true,&quot;align&quot;:&quot;none&quot;,&quot;classes&quot;:{&quot;has&quot;:1}}" data-cke-widget-upcasted="1" data-cke-widget-keep-attr="0" data-widget="image" data-src="https://img-blog.csdnimg.cn/20200102181029576.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTM1MjEyMjA=,size_16,color_FFFFFF,t_70"><img class="cke_reset cke_widget_drag_handler lazyload" title="点击并拖拽以移动" alt="" width="15" height="15" data-cke-widget-drag-handler="1" data-src="data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==">
四、根据ticket获取二维码
https://mp.weixin.qq.com/cgi-bin/showqrcode?ticket=gQEd7zwAAAAAAAAAAS5odHRwOi8vd2VpeGluLnFxLmNvbS9xLzAyYlo5NXRyR0ljZ2oxOFVkZHh1MWQAAgQofw1eAwQQDgAA
<span class="cke_widget_wrapper cke_widget_inline cke_widget_image cke_image_nocaption cke_widget_selected" data-cke-widget-wrapper="1" data-cke-filter="off" data-cke-display-name="图像" data-cke-widget-id="2"><img class="has cke_widget_element lazyload" alt="" width="1200" height="890" src="https://img-blog.csdnimg.cn/20200102182045782.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTM1MjEyMjA=,size_16,color_FFFFFF,t_70" data-cke-widget-data="{&quot;hasCaption&quot;:false,&quot;src&quot;:&quot;https://img-blog.csdnimg.cn/20200102182045782.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTM1MjEyMjA=,size_16,color_FFFFFF,t_70&quot;,&quot;alt&quot;:&quot;&quot;,&quot;width&quot;:&quot;1200&quot;,&quot;height&quot;:&quot;890&quot;,&quot;lock&quot;:true,&quot;align&quot;:&quot;none&quot;,&quot;classes&quot;:{&quot;has&quot;:1}}" data-cke-widget-upcasted="1" data-cke-widget-keep-attr="0" data-widget="image" data-src="https://img-blog.csdnimg.cn/20200102182045782.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTM1MjEyMjA=,size_16,color_FFFFFF,t_70"><img class="cke_reset cke_widget_drag_handler lazyload" title="点击并拖拽以移动" alt="" width="15" height="15" data-cke-widget-drag-handler="1" data-src="data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==">
五、【One More Thing！！！】
那这个二维码别人扫了我们怎么知道呢？回答：如果别人扫了我们生成的二维码就会触发我们的扫码事件，微信服务器就会给我们推送如下的消息包
<div class="cke_widget_wrapper cke_widget_block cke_widget_codeSnippet cke_widget_wrapper_has cke_widget_selected" data-cke-widget-wrapper="1" data-cke-filter="off" data-cke-display-name="代码段" data-cke-widget-id="1">
<pre class="has cke_widget_element" data-cke-widget-data="{&quot;code&quot;:&quot;&lt;xml&gt;\n&lt;ToUserName&gt;&lt;!]&gt;&lt;/ToUserName&gt;\n&lt;FromUserName&gt;&lt;!]&gt;&lt;/FromUserName&gt;\n&lt;CreateTime&gt;123456789&lt;/CreateTime&gt;\n&lt;MsgType&gt;&lt;!]&gt;&lt;/MsgType&gt;\n&lt;Event&gt;&lt;!]&gt;&lt;/Event&gt;\n&lt;EventKey&gt;&lt;!]&gt;&lt;/EventKey&gt;\n&lt;Ticket&gt;&lt;!]&gt;&lt;/Ticket&gt;\n&lt;/xml&gt; &quot;,&quot;classes&quot;:{&quot;has&quot;:1}}" data-cke-widget-upcasted="1" data-cke-widget-keep-attr="0" data-widget="codeSnippet"><code class="hljs"><xml>
<ToUserName><!]></ToUserName>
<FromUserName><!]></FromUserName>
<CreateTime>123456789</CreateTime>
<MsgType><!]></MsgType>
<Event><!]></Event>
<EventKey><!]></EventKey>
<Ticket><!]></Ticket>
</xml> </code></pre>
<img class="cke_reset cke_widget_drag_handler lazyload" title="点击并拖拽以移动" alt="" width="15" height="15" data-cke-widget-drag-handler="1" data-src="data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw=="></div>
到这里你应该清楚了吧，我们在我们的微信对接接口的POST方法里增加如下代码即可：
<span class="cke_widget_wrapper cke_widget_inline cke_widget_image cke_image_nocaption cke_widget_selected" data-cke-widget-wrapper="1" data-cke-filter="off" data-cke-display-name="图像" data-cke-widget-id="0"><img class="has cke_widget_element lazyload" alt="" width="1200" height="567" src="https://img-blog.csdnimg.cn/20200102182442857.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTM1MjEyMjA=,size_16,color_FFFFFF,t_70" data-cke-widget-data="{&quot;hasCaption&quot;:false,&quot;src&quot;:&quot;https://img-blog.csdnimg.cn/20200102182442857.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTM1MjEyMjA=,size_16,color_FFFFFF,t_70&quot;,&quot;alt&quot;:&quot;&quot;,&quot;width&quot;:&quot;1200&quot;,&quot;height&quot;:&quot;567&quot;,&quot;lock&quot;:true,&quot;align&quot;:&quot;none&quot;,&quot;classes&quot;:{&quot;has&quot;:1}}" data-cke-widget-upcasted="1" data-cke-widget-keep-attr="0" data-widget="image" data-src="https://img-blog.csdnimg.cn/20200102182442857.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTM1MjEyMjA=,size_16,color_FFFFFF,t_70"><img class="cke_reset cke_widget_drag_handler lazyload" title="点击并拖拽以移动" alt="" width="15" height="15" data-cke-widget-drag-handler="1" data-src="data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==">
<pre><code class="language-html hljs">WeiXinController.java</code></pre>
<pre><code class="language-html hljs">package com.xu.wemall.controller.weixin; import com.alibaba.fastjson.JSONObject; import com.xu.wemall.commons.utils.CheckUtil; import com.xu.wemall.components.weixin.MessageUtil; import com.xu.wemall.components.weixin.WeiXinUserUtil; import io.swagger.annotations.Api; import lombok.extern.slf4j.Slf4j; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.bind.annotation.RequestParam; import org.springframework.web.bind.annotation.RestController; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.io.PrintWriter; import java.util.Map; /** * 类名称: LoginController * 类描述: 与微信对接登陆验证 * * @author yuanjun * 创建时间:2017年12月5日上午10:52:13 */ @Slf4j @RestController @Api(tags = "接入验证接口") @RequestMapping(value = "/weChart") public class WeiXinController { @Autowired private WeiXinUserUtil weiXinUserUtil; @Autowired private MessageUtil messageUtil; @RequestMapping(value = "/connect", method = RequestMethod.GET) public String connect(@RequestParam(value = "signature") String signature, @RequestParam(value = "timestamp") String timestamp, @RequestParam(value = "nonce") String nonce, @RequestParam(value = "echostr") String echostr) { log.info("-----开始校验签名-----"); PrintWriter out = null; if (CheckUtil.checkSignature(signature, timestamp, nonce)) { log.info("-----签名校验通过-----"); return echostr; } else { log.info("-----校验签名失败-----"); return null; } } @RequestMapping(value = "connect", method = RequestMethod.POST) public String dopost(HttpServletRequest request, HttpServletResponse response) throws Exception { response.setCharacterEncoding("utf-8"); //将微信请求xml转为map格式，获取所需的参数 Map<String, String> map = MessageUtil.parseXml(request); String ToUserName = map.get("ToUserName"); String FromUserName = map.get("FromUserName"); String MsgType = map.get("MsgType"); String Content = map.get("Content"); String Event = map.get("Event"); if(MessageUtil.REQ_MESSAGE_TYPE_EVENT.equals(MsgType)){ if(MessageUtil.EVENT_TYPE_SUBSCRIBE.equals(Event)){ String xmlString = messageUtil.subscribeForText(ToUserName,FromUserName); //关注了公众号，调用接口获得用户的详细信息并保存到后台 JSONObject jsonObject = weiXinUserUtil.handdleWeixinUserInfo(FromUserName); log.info("获取用户的详细信息：{}",jsonObject.toJSONString()); return xmlString; }else if(MessageUtil.EVENT_TYPE_UNSUBSCRIBE.equals(Event)){ String xmlString = messageUtil.unsubscribeForText(ToUserName,FromUserName); return xmlString; }else if(MessageUtil.EVENT_TYPE_SCAN.equals(Event)){ JSONObject jsonObject = weiXinUserUtil.handdleWeixinUserInfo(FromUserName); log.info("获取用户的详细信息：{}",jsonObject.toJSONString()); } } //处理文本类型，实现输入1，回复相应的封装的内容 if (MessageUtil.REQ_MESSAGE_TYPE_TEXT.equals(MsgType)) { String xmlString = messageUtil.replyForText(ToUserName,FromUserName,"你发送的是：" + Content); log.info(xmlString); return xmlString; } if (MessageUtil.REQ_MESSAGE_TYPE_IMAGE.equals(MsgType)) { String filePath = "C:\\Users\\RonnieXu\\Pictures\\2.jpg"; String xmlString = messageUtil.replyForImage(ToUserName,FromUserName,filePath); return xmlString; } return null; } } </code></pre>
<pre><code class="language-html hljs">WeiXinUserUtil.java</code></pre>
<pre><code class="language-html hljs">package com.xu.wemall.components.weixin; import com.alibaba.fastjson.JSONObject; import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper; import com.xu.wemall.commons.constants.URIConstant; import com.xu.wemall.entry.WxUser; import com.xu.wemall.service.IWxUserService; import lombok.extern.slf4j.Slf4j; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Component; import org.springframework.web.client.RestTemplate; @Slf4j @Component public class WeiXinUserUtil { @Autowired private IWxUserService iWxUserService; @Autowired private RestTemplate restTemplate; @Autowired private AccessTokenUtil accessTokenUtil; public JSONObject handdleWeixinUserInfo(String openId) { String accessToken = accessTokenUtil.getAccessToken(); if (accessToken != null) { log.info("URL{}", URIConstant.OPENID_USERINFO_URL); String url = URIConstant.OPENID_USERINFO_URL.replace("ACCESS_TOKEN", accessToken) .replace("OPENID", openId); log.info("OPENID_USERINFO_URL:{}", url); //发起POST请求创建菜单 JSONObject jsonObject = restTemplate.getForObject(url, JSONObject.class); //表示订阅了该公众号 if (jsonObject.getIntValue("subscribe") == 1) { //保存 WxUser wxUser = JSONObject.parseObject(jsonObject.toJSONString(), WxUser.class); //先查一下是否曾经查询过(查看数据库数据） QueryWrapper<WxUser> queryWrapper = new QueryWrapper(); queryWrapper.lambda().eq(WxUser::getOpenid, openId); WxUser wxUserExist = iWxUserService.getOne(queryWrapper); if (wxUserExist == null) { boolean result = iWxUserService.saveOrUpdate(wxUser); } } return jsonObject; } return null; } } </code></pre>
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来源：https://www.cnblogs.com/xulijun137/p/12213604.html

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