困扰了多天的VMware中Ubuntu的apt-get update错误（Some index files failed to download. They have been ignored, o）

终于解决了，附上完成的胜利图，✌。（大家多试，总有一个办法可以解决的，加油）

解决方案！！！！！！！！！！！！！！！

问题：
W: Failed to fetch bzip2:/var/lib/apt/lists/partial/ppa.launchpad.net_webupd8team_java_ubuntu_dists_precise_main_binary-i386_Packages Hash Sum mismatch
W: Failed to fetch bzip2:/var/lib/apt/lists/partial/extras.ubuntu.com_ubuntu_dists_precise_main_binary-i386_Packages Hash Sum mismatch
E: Some index files failed to download. They have been ignored, or old ones used instead.

解决方法：
sudo rm -rf /var/lib/apt/lists/*
sudo rm -rf /var/lib/apt/lists/partial/*
sudo apt-get clean
sudo apt-get update
sudo apt-get update -o Acquire::No-Cache=True
sudo apt-get update -o Acquire::BrokenProxe=True
sudo rm -vf /var/lib/apt/lists/*

如果以上均无法解决，建议换源

参考如下：
http://blog.sina.com.cn/s/blog_60f19826010178xh.html

其他解决方法链接！！！！！！！！！！！！！！！！！！！！！！！
https://forum.ubuntu.org.cn/viewtopic.php?t=448130