js、URL传递含有中文参数时的乱码问题解决
1、使用代码完成字符集修改

方法（一）：
html页面：

function testOne() {

   var url =  "testOne_test.do?expr="+你好;

   location  = encodeURI(url);

}

后台java代码：

String expr = new String(request.getParameter("expr").getBytes("ISO-8859-1"),"UTF-8");

方法（二）：

html页面：

function testOne() {
   var url =  "testOne_test.do?expr="+你好;
   location = encodeURI(encodeURI(url));
}

后台java代码：
String expr = java.net.URLDecoder.decode(lrequest.getParameter("expr") , "UTF-8");
2、修改tomcat中的配置参数

在tomcat下面找到server.xml
<Connector port="8080" maxThreads="150" minSpareThreads="25" maxSpareThreads="75" URIEncoding="GBK">
根据需要修改为UTF-8等字符集。
3、在web工程中添加spring.jar，使用spring的CharacterEncodingFilter

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    <filter> 
     <filter-name>encoding</filter-name> 
     <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class> 
     <init-param> 
      <param-name>encoding</param-name> 
      <param-value>UTF-8</param-value> 
     </init-param> 
    </filter> 
    <filter-mapping> 
     <filter-name>encoding</filter-name> 
     <url-pattern>/*</url-pattern> 
    </filter-mapping> 



org.springframework.web.filter.CharacterEncodingFilter 中的转码部分：

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    protected void doFilterInternal( 
      HttpServletRequest request, HttpServletResponse response, FilterChain filterChain) 
      throws ServletException, IOException { 
     
     if (this.encoding != null && (this.forceEncoding || request.getCharacterEncoding() == null)) { 
      request.setCharacterEncoding(this.encoding); 
      if (this.forceEncoding && responseSetCharacterEncodingAvailable) { 
       response.setCharacterEncoding(this.encoding); 
      } 
     } 
     filterChain.doFilter(request, response); 
    } 

参考：
url：http://blog.163.com/wkyuyang_001/blog/static/108021228200971352434158/