sendMessage(item) {
      const that = this;
      this.$wx.invoke("getContext", {}, function (res) {
        if (res.err_msg == "getContext:ok") {
          const entry = res.entry; //返回进入H5页面的入口类型，目前有normal、contact_profile、single_chat_tools、group_chat_tools
          if (entry == "single_chat_tools" || entry == "group_chat_tools  ") {
            switch (item.type) {
              case "文本":
                that.$wx.invoke(
                  "sendChatMessage",
                  {
                    msgtype: "text", //消息类型，必填
                    text: {
                      content: item.content, //文本内容
                    },
                  },
                  function (res) {
                    if (res.err_msg == "sendChatMessage:ok") {
                      //发送成功
                    } else {
                      this.$toast("发送失败");
                    }
                  }
                );
                break;
              case "图片":
                that.$wx.invoke(
                  "sendChatMessage",
                  {
                    msgtype: "image", //消息类型，必填
                    image: {
                      mediaid: item.media_id, //图片的素材id
                    },
                  },
                  function (res) {
                    if (res.err_msg == "sendChatMessage:ok") {
                      //发送成功
                    } else {
                      this.$toast("发送失败");
                    }
                  }
                );
                break;
              case "视频":
                that.$wx.invoke(
                  "sendChatMessage",
                  {
                    msgtype: "video", //消息类型，必填
                    video: {
                      mediaid: item.media_id, //图片的素材id
                    },
                  },
                  function (res) {
                    if (res.err_msg == "sendChatMessage:ok") {
                      //发送成功
                    } else {
                      this.$toast("发送失败");
                    }
                  }
                );
                break;
              case "文件":
                that.$wx.invoke(
                  "sendChatMessage",
                  {
                    msgtype: "file", //消息类型，必填
                    file: {
                      mediaid: item.media_id, //图片的素材id
                    },
                  },
                  function (res) {
                    if (res.err_msg == "sendChatMessage:ok") {
                      //发送成功
                    } else {
                      this.$toast("发送失败");
                    }
                  }
                );
                break;
              case "链接":
                console.log("item", item);
                that.$wx.invoke(
                  "sendChatMessage",
                  {
                    msgtype: "news", //消息类型，必填
                    news: {
                      link: item.link_url, //H5消息页面url 必填
                      title: item.link_title, //H5消息标题
                      desc: item.describe, //H5消息摘要
                      imgUrl: item.url, //H5消息封面图片URL
                    },
                  },
                  function (res) {
                    if (res.err_msg == "sendChatMessage:ok") {
                      //发送成功
                    } else {
                      this.$toast("发送失败");
                    }
                  }
                );
                break;
              default:
                break;
            }
          }
        } else {
          //错误处理
        }
      });
    },

看错误提示是 分享链接或者图片链接错误？