public static void main(String[] args) throws JsonProcessingException {
    String resStr = "[{billType=idCard, filePath=IMG003:/data/upload/2020/7/28/00/xxxxxxxxxxxxxxxxx/a_7.jpg}, {billType=autoCard, filePath=IMG003:/data/upload/2020/7/28/00/xxxxxxxxxxxxxxxxx/b_7.jpg}, {billType=autoCard, filePath=IMG003:/data/upload/2020/7/28/00/xxxxxxxxxxxxxxxxx/c_7.jpg}]";
    String s = resStr.replaceAll("\\s*", "")
            .replaceAll("\\{", "\\{\"")
            .replaceAll("=", "\":\"")
            .replaceAll("}", "\"\\}")
            .replaceAll(",", "\",\"")
            .replaceAll("}\",\"\\{", "\\},\\{");
    List<ImageVo> imageVos = JSONUtil.toList(JSONUtil.parseArray(s), ImageVo.class);
    System.out.println(imageVos);
}