Check failed: FLAGS_weights.size() > 0 (0 vs. 0) Need model weights to score.
出现这个错误，但是我记得昨天还好好的，网上搜了也没有答案，后来仔细检查才发现，原来存放 .caffemodel 的文件名字 中间有空格！！！
把文件夹路径上的名字去掉，果断就可以了。。。
solver_proto=/home/wangxiao/Downloads/caffe-master/wangxiao/bvlc_alexnet/test.prototxt
weights_solverstate=/home/wangxiao/Downloads/caffe-master/wangxiao/bvlc_alexnet/Untitled_Folder/_iter_450000.caffemodel
log_filename=/home/wangxiao/Downloads/caffe-master/wangxiao/bvlc_alexnet/log_files/test_web_data_1.log
./build/tools/caffe test \
--model=$solver_proto --weights=$weights_solverstate 2>&1 | tee -a $log_filename