🎨 #3439 【公众号】模版消息长度限制问题优化

Author: binarywang

weixin-java-mp/src/main/java/me/chanjar/weixin/mp/bean/template/WxMpTemplateMessage.java

@@ -1,20 +1,16 @@
 package me.chanjar.weixin.mp.bean.template;
 
+import lombok.*;
+import me.chanjar.weixin.mp.util.json.WxMpGsonBuilder;
+import org.apache.commons.lang3.StringUtils;
+
 import java.io.Serializable;
 import java.util.ArrayList;
 import java.util.List;
 
-import lombok.AllArgsConstructor;
-import lombok.Builder;
-import lombok.Data;
-import lombok.Getter;
-import lombok.NoArgsConstructor;
-import lombok.Setter;
-import me.chanjar.weixin.mp.util.json.WxMpGsonBuilder;
-
 /**
  * 模板消息.
- * 参考 http://mp.weixin.qq.com/wiki?t=resource/res_main&id=mp1433751277&token=&lang=zh_CN 发送模板消息接口部分
+ * 参考 <a href="http://mp.weixin.qq.com/wiki?t=resource/res_main&id=mp1433751277&token=&lang=zh_CN">发送模板消息接口部分</a>
  *
  * @author <a href="https://github.com/binarywang">Binary Wang</a>
  */
@@ -67,10 +63,35 @@ public WxMpTemplateMessage addData(WxMpTemplateData datum) {
     if (this.data == null) {
       this.data = new ArrayList<>();
     }
-    this.data.add(datum);
+    this.data.add(resetValue(datum));
     return this;
   }
 
+  /**
+   * 处理微信模版消息字符串长度问题
+   *
+   * @link <a href=https://developers.weixin.qq.com/doc/offiaccount/Message_Management/Template_Message_Interface.html#%E7%B1%BB%E7%9B%AE%E6%A8%A1%E6%9D%BF%E6%B6%88%E6%81%AF">模板消息</a>
+   */
+  private WxMpTemplateData resetValue(WxMpTemplateData datum) {
+    String name = datum.getName();
+    String value = datum.getValue();
+
+    if (StringUtils.startsWith(name, "thing") && value.length() > 20) {
+      value = StringUtils.substring(value, 0, 17) + "...";
+    } else if (StringUtils.startsWith(name, "character_string") && value.length() > 32) {
+      value = StringUtils.substring(value, 0, 29) + "...";
+    } else if (StringUtils.startsWith(name, "phone_number") && value.length() > 17) {
+      value = StringUtils.substring(value, 0, 14) + "...";
+    } else if (StringUtils.startsWith(name, "car_number") && value.length() > 8) {
+      value = StringUtils.substring(value, 0, 5) + "...";
+    } else if (StringUtils.startsWith(name, "const") && value.length() > 20) {
+      value = StringUtils.substring(value, 0, 17) + "...";
+    }
+
+    datum.setValue(value);
+    return datum;
+  }
+
   public String toJson() {
     return WxMpGsonBuilder.create().toJson(this);
   }

weixin-java-mp/src/test/java/me/chanjar/weixin/mp/bean/template/WxMpTemplateMessageTest.java

@@ -17,7 +17,7 @@ public void testToJson() {
     WxMpTemplateMessage tm = WxMpTemplateMessage.builder()
       .toUser("OPENID")
       .templateId("ngqIpbwh8bUfcSsECmogfXcV14J0tQlEpBO27izEYtY")
-      .miniProgram(new WxMpTemplateMessage.MiniProgram("xiaochengxuappid12345", "index?foo=bar",true))
+      .miniProgram(new WxMpTemplateMessage.MiniProgram("xiaochengxuappid12345", "index?foo=bar", true))
       .url("http://weixin.qq.com/download")
       .clientMsgId("MSG_000001")
       .build();
@@ -26,7 +26,29 @@ public void testToJson() {
       new WxMpTemplateData("first", "haahah", "#FF00FF"));
     tm.addData(
       new WxMpTemplateData("remark", "heihei", "#FF00FF"));
-    assertEquals(tm.toJson(), "{\"touser\":\"OPENID\",\"template_id\":\"ngqIpbwh8bUfcSsECmogfXcV14J0tQlEpBO27izEYtY\",\"client_msg_id\":\"MSG_000001\",\"url\":\"http://weixin.qq.com/download\",\"miniprogram\":{\"appid\":\"xiaochengxuappid12345\",\"path\":\"index?foo=bar\"},\"data\":{\"first\":{\"value\":\"haahah\",\"color\":\"#FF00FF\"},\"remark\":{\"value\":\"heihei\",\"color\":\"#FF00FF\"}}}");
+
+    assertEquals("{\"touser\":\"OPENID\",\"template_id\":\"ngqIpbwh8bUfcSsECmogfXcV14J0tQlEpBO27izEYtY\",\"client_msg_id\":\"MSG_000001\",\"url\":\"http://weixin.qq.com/download\",\"miniprogram\":{\"appid\":\"xiaochengxuappid12345\",\"path\":\"index?foo=bar\"},\"data\":{\"first\":{\"value\":\"haahah\",\"color\":\"#FF00FF\"},\"remark\":{\"value\":\"heihei\",\"color\":\"#FF00FF\"}}}", tm.toJson());
   }
 
+  @Test
+  public void testAddData() {
+    WxMpTemplateMessage tm = WxMpTemplateMessage.builder().build()
+      .addData(new WxMpTemplateData("thing01", "张三李四王麻子张三李四王麻子张三李四王麻子张三李四王麻子"))
+      .addData(new WxMpTemplateData("time01", "2019年10月1日 15:01"))
+      .addData(new WxMpTemplateData("character_string01", "1234567890123456789012345678901234567890"))
+      .addData(new WxMpTemplateData("amount01", "￥100.21"))
+      .addData(new WxMpTemplateData("phone_number01", "+86-0766-668888661111"))
+      .addData(new WxMpTemplateData("car_number01", "粤A8Z888挂9"))
+      .addData(new WxMpTemplateData("const01", "支付状态、排队状态、天气状态、物流状态、用药提醒、还款提醒"));
+
+    assertEquals(7, tm.getData().size());
+
+    assertEquals("张三李四王麻子张三李四王麻子张三李...", tm.getData().get(0).getValue());
+    assertEquals("2019年10月1日 15:01", tm.getData().get(1).getValue());
+    assertEquals("12345678901234567890123456789...", tm.getData().get(2).getValue());
+    assertEquals("￥100.21", tm.getData().get(3).getValue());
+    assertEquals("+86-0766-66888...", tm.getData().get(4).getValue());
+    assertEquals("粤A8Z8...", tm.getData().get(5).getValue());
+    assertEquals("支付状态、排队状态、天气状态、物流...", tm.getData().get(6).getValue());
+  }
 }