求教各位大神，我想用R语言抓取网页总页数，网址和代码如下，Tpage应该显示“共53页”的，可是出现乱码，请问是哪里错了该怎么处理？请有空的高人把以下代码放在自己的Rstudio上运行一下，帮我发现以下错误，谢谢了！
library(XML)
library(RCurl)
library(stringr)
url=getURL("http://search.51job.com/list/020000,000000,0000,00,4,99,%25E6%2595%25B0%25E6%258D%25AE%25E6%258C%2596%25E6%258E%2598,2,1.html?lang=c&stype=1&postchannel=0000&workyear=99&cotype=99&degreefrom=99&jobterm=99&companysize=99&lonlat=0%2C0&radius=-1&ord_field=0&confirmdate=9&fromType=&dibiaoid=0&address=&line=&specialarea=00&from=&welfare=")
html_job<-htmlParse(url,encoding="UTF-8")
rootNode_job<-xmlRoot(html_job)
Tpage<-xpathSApply(rootNode_job,"//div[@class='p_in']/span[1]",xmlValue)