【标题】：又谈乱码问题解决
【关键字】：
【来源】：http://www.blogjava.net/richardeee/archive/2007/01/23/chinese_encoding_problem_for_all.html

又谈乱码问题解决

有人说，乱码问题一直跟中国的程序员特别有缘，真是再同意不过了，不管是Struts，JSF，JSP，还是MySQL，Tomcat，全都或多或少有乱码的问题。
一般的做法有用Filter：

< filter >

???? < filter-name > Set?Character?Encoding </ filter-name >

???? < filter-class > org.springframework.web.filter.CharacterEncodingFilter </ filter-class >

???? < init-param >

?????? < param-name > encoding </ param-name >

?????? < param-value > GBK </ param-value >

???? </ init-param >

???? < init-param >

?????? < param-name > ignore </ param-name >

?????? < param-value > true </ param-value >

???? </ init-param >

?? </ filter >

?? < filter-mapping >

???? < filter-name > Set?Character?Encoding </ filter-name >

???? < url-pattern > *.do </ url-pattern >

?? </ filter-mapping >

?? < filter-mapping >

???? < filter-name > Set?Character?Encoding </ filter-name >

???? < url-pattern > *.jsp </ url-pattern >

?? </ filter-mapping >

?? < filter-mapping >

???? < filter-name > Set?Character?Encoding </ filter-name >

???? < url-pattern > *.html </ url-pattern >

?? </ filter-mapping >

?? < filter-mapping >

???? < filter-name > Set?Character?Encoding </ filter-name >

???? < url-pattern > *.htm </ url-pattern >

?? </ filter-mapping >

的，有用

<% request.setCharacterEncoding( " GBK " ); %>

的，还有用

<% @?page?contentType = " text/html;?charset=GBK " ?pageEncoding = " GBK " %>

的,还可以用

<% ?String?name? = ? new ?String(request.getParameter( " name " ).getBytes( " 8859_1 " ),? " GB2312 " );? %>

昨天就在做项目的过程中，发现用URL传request参数的时候，在第二个页面上得到乱码的问题。把上面几种方法都试了一下还是不行。仔细追踪了一下，发现在页面的源代码上中文是正常的，一直到URL还是中文正常，可是在后台的Action里面log出来就成了乱码了，于是猜想是在request封装的过程中把中文变成乱码了，以致于后台直接就是取到的乱码。在后台Action中Set入中文，页面上正常显示，说明Struts的中文已经不存在问题。剩下的，应该就只有doGet和doPost方法的问题了。找了一下tomcat的配置文件，发现只要在server.xml中：

????

???? < Connector? port ="8080" ?maxHttpHeaderSize ="8192"

???????????????maxThreads ="150" ?minSpareThreads ="25" ?maxSpareThreads ="75"

???????????????enableLookups ="false" ?redirectPort ="8443" ?acceptCount ="100"

???????????????connectionTimeout ="20000" ?disableUploadTimeout ="true" />

???? <!-- ?Note?:?To?disable?connection?timeouts,?set?connectionTimeout?value

?????to?0? -->

改为

????

???? < Connector? port ="8080" ?maxHttpHeaderSize ="8192"

???????????????maxThreads ="150" ?minSpareThreads ="25" ?maxSpareThreads ="75"

???????????????enableLookups ="false" ?redirectPort ="8443" ?acceptCount ="100"