As a Japanese, I understand the variety of Chinese opinions. They sound all natural to me: both the feelings about the Japanese aggression in the last century and the advanced technology of Japan for you to catch up. I hope my argument help you think about Japan (or China?) today.
If you talk about history, we have been neighbors for two thousand years or possibly more. China had been a superpower in Asia, and we communicated happily in most of the times. (China tried to militarily invade Japan only once.)
And then Europeans including Russians and Americans came to change our history. Many Asian countries became their colonies. Japan didn't, and then started to behave as another colonialist country, very harsh. I think Japan as a nation was so tense and frantic at those days as a developing country, feeling the threat from Western colonialist countries (as you might now feel the threat from the US). I guess that some Japanese remember the stressful pressure from the Western coutries more strongly than the hardships they gave to the Chinese. They want to condemn the Western colonialist countries before they apologize themselves.
I know the history in 1930's as you describe. Do not misunderstand that Japanese do not want to apologize. Emperors and the ministers have formally apologized and economically helped China.
I want you realize that Japan essentially changed after the war. Forgetting about the war, we became frantic about living. We had to live, and worked hard, probably just like you in the present-day China.
Your economy is growing rapidly, and our economies are not separable now. You are buying a lot from Japan, and we buy a lot from you (to the extent that boycotting of goods is meaningless). With the present pace, we Japanese all know that you will soon catch up Japan and China will become the only superpower of Asia, like the historical days, again.
If the politicians want to visit Yasukuni shrine (I am against it), and school textbooks are apparently not eagerly apologizing the neighboring countries, please do not take it too seriously. We are no more a colonialist country, and we want to make friends with the neighbors. The most important is to trust each other, and solve controversial problems by taking time if necessary.
(I am not accustomed to the homepage here, and apologize for any failures beforehand for that.)
KappNets
