批量修改图片名，并一起修改数据库字段值

数据处理，前期图片文件名中包含汉字，在访问图片时出现乱码情况，无法匹配，遂写此方法改之，将数据库中文件名和本地图片名一致，即可。

@RequestMapping("/test")
public class TestController {

    private final GgSpdmMapper ggSpdmMapper;

    public TestController(GgSpdmMapper ggSpdmMapper) {
        this.ggSpdmMapper = ggSpdmMapper;
    }

    @RequestMapping(value="/changeSp",method = RequestMethod.POST)
    public String changeSp () throws IOException {
        List filterName = new ArrayList();
        filterName.add("jpeg");
        filterName.add("bmp");
        filterName.add("jpg");// 自己可以定义
        String dist = "D:\\LenovoSoftstore\\newSoft\\apache-tomcat-7.0.100-windows-x64\\" +
        "apache-tomcat-7.0.100\\webapps\\allianceSys\\images\\";

        //String dist = "D:\\apache-tomcat-6.0.45\\webapps\\allianceSys\\images\\";
        List data = getFileList(dist, filterName);
        System.out.println(data);
        QueryWrapper<GgSpdm> queryWrapper = new QueryWrapper<>();
        queryWrapper.isNotNull("cptp1");
        List<GgSpdm> list = ggSpdmMapper.selectList(queryWrapper);
        for(int i=0;i<list.size();i++){
            for(int j=0;j<data.size();j++){
                String name = list.get(i).getCptp1().substring(8,list.get(i).getCptp1().length());
                if(name.equals(data.get(j))){
                    System.out.println(list.get(i).getTxm()+"-------匹配成功");
                    String spmc = list.get(i).getTxm()+"_"+String.valueOf((int)((Math.random()*9+1)*1000));
                    GgSpdm gg = new GgSpdm();
                    gg.setCptp1("/images/"+spmc+".jpg");
                    QueryWrapper<GgSpdm> queryWrapper1 = new QueryWrapper<>();
                    queryWrapper1.eq("txm",list.get(i).getTxm());
                    int k = ggSpdmMapper.update(gg,queryWrapper1);
                    changeSpmc(dist+data.get(j) , spmc);
                }
            }
        }
        return JsonResponseUtils.success("",dist);
    }

    //修改文件名称
    public static void changeSpmc(String path , String spmc) throws IOException {
        File f = new File(path);
        if (!f.exists()) { // 判断原文件是否存在（防止文件名冲突）
            return;
        }
        spmc = spmc.trim();
        if ("".equals(spmc) || spmc == null) // 文件名不能为空
            return;
        String newFilePath = null;
        if (f.isDirectory()) { // 判断是否为文件夹
            newFilePath = path.substring(0, path.lastIndexOf("\\")) + "\\" + spmc;
        } else {
            newFilePath = path.substring(0, path.lastIndexOf("\\")) + "\\" + spmc
                    + path.substring(path.lastIndexOf("."));
        }
        File nf = new File(newFilePath);
        try {
            f.renameTo(nf); // 修改文件名
        } catch (Exception err) {
            err.printStackTrace();
        }
    }


    // 或得扩展名
    public static String getExtendName(String fileName)
    {
        int index = fileName.lastIndexOf(".");
        if (index != -1)
        {
            return fileName.substring(index + 1);
        }
        return null;
    }

    // 获得文件列表
    public static List getFileList(String path, List filterName)
    {
        File file = new File(path);
        List list = new ArrayList();
        String[] fileList = file.list();
        for (String s : fileList)
        {
            String extendName = getExtendName(s);
            if (filterName.contains(extendName))
            {
                list.add(s);
            }
        }
        return list;
    }
}