1、删除WDFUploadDownload的downloadFileToDocument方法。

2、修改文件下载的根路径为/Document/files。

WadeMobileFunc/WadeMobileFunc/WDFUploadDownload.m

@@ -454,7 +454,7 @@
                                              // 1.如果目录不存在，创建
                                              NSRange range = [filePathStr rangeOfString:@"/" options:NSBackwardsSearch];
                                              NSString *dir = [filePathStr substringToIndex:range.location], *fileName = [filePathStr substringFromIndex:range.location];
                                              NSString *dirPath = [WDUtility dirInDocument:dir];
                                              NSString *dirPath = [[WDUtility dirInDocument:FILE_TMP] stringByAppendingPathComponent:dir];
                                              NSString *savePath = [dirPath stringByAppendingString:fileName];
                                              
                                              // 2.将数据写到文件中
@@ -498,36 +498,4 @@
    [self callback: ret ? @"0" : @"1"];
}
- (void)downloadFileToDocument:(NSArray *)param {
    NSAssert(param && [param isKindOfClass:[NSArray class]] && param.count, @"参数错误");
    
    NSString *resPath = param[0];
    NSAssert(resPath && resPath.length, @"参数resPath错误");
    
    NSString *filePath = param[1];
    NSAssert(filePath && filePath.length, @"参数filePath错误");
    
    NSData *resData = [NSData dataWithContentsOfURL:[NSURL URLWithString:resPath]];
    NSAssert(resData && resData.length, @"下载失败");
    
    NSMutableString *filePathStr = [NSMutableString stringWithString:filePath];
    
    // 处理以“/”开头的路径
    if ([filePathStr hasPrefix:@"/"]) {
        filePathStr = [NSMutableString stringWithString:[filePathStr substringFromIndex:1]];
    }
    
    // 1.如果目录不存在，创建
    NSRange range = [filePathStr rangeOfString:@"/" options:NSBackwardsSearch];
    NSString *dir = [filePathStr substringToIndex:range.location];
    NSString *fileName = [filePathStr substringFromIndex:range.location];
    NSString *dirPath = [[WDUtility dirInDocument:FILE_TMP] stringByAppendingPathComponent:dir];
    NSString *savePath = [dirPath stringByAppendingString:fileName];
    
    // 2.将数据写到文件中
    BOOL ret = [resData writeToFile:savePath atomically:YES];
    
    [self callback:ret ? @"0" : @"1"];
}
@end