Lei Zhengfu, former secretary of Chongqing's Beibei District Committee of the Communist Party of China (CPC), was also fined 300,000 yuan (USD 48,554), according to the Chongqing No 1 Intermediate People's Court's ruling, state-run Xinhua news agency reported.
Lei took advantage of his position and provided help to local companies in exchange for bribes from March 2007 to November 2012, according to a statement from the court.
Lei asked a businessman surnamed Ming for 3 million yuan in February 2008 after being blackmailed by Xiao Ye, a man who conspired with others to lure officials into having sex with women and secretly recorded their trysts in order to blackmail them.
Although Lei asked Xiao to return 1 million yuan to Ming's company in November 2010, the court believed that this did not affect Lei's acceptance of bribes.
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Lei also received USD 10,000 and a watch from a businessman surnamed Yin at the cost of securing support funds for Yin's company in July 2011.
At the beginning of 2012, Lei helped a doctor surnamed Fan obtain a promotion at a hospital in Chongqing, with Lei's wife receiving 100,000 yuan from Fan later with Lei's permission, the court said.
Lei said he would consult his lawyer and consider the possibility of an appeal.
The 55-year-old was found to have appeared in a sex video that was posted online in November.
Lei was subsequently removed from his post and detained by police in February and in early May, he was expelled from the CPC.