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

view plaincopy to clipboardprint? 


 <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： 


view plaincopy to clipboardprint? 


 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/