<el-button
          type="primary"
          v-clipboard:copy="publicKey"
          v-clipboard:success="onCopySuccess"
          v-clipboard:error="onCopyError"
        >复 制</el-button>

    onCopySuccess() {
      this.$message.success("复制成功");
    },
    onCopyError() {
      this.$message.error("复制失败");
    },