javascript通过url向jsp页面传递中文参数导致乱码解决方案

2013-1-16 10:35:49 org.apache.tomcat.util.http.Parameters processParameters

警告: Parameters: Character decoding failed. Parameter 'id' with value '%u8BA2%u5355' has been ignored. Note that the name and value quoted here may corrupted due to the failed decoding. Use debug level logging to see the original, non-corrupted values.

Enter Servlet Get Method..

OK：

2013-1-16 10:35:49 org.apache.catalina.core.StandardWrapperValve invoke

严重: Servlet.service() for servlet suggest threw exception

java.lang.NullPointerException

at com.ont.demo.suggest.doGet(suggest.java:25)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)

at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)

at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)

at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)

at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)

at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)

at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:852)

at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)

at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)

at java.lang.Thread.run(Thread.java:619)

解决方法：在传递参数前将中文参数进行两次编码，jsp页面获取参数后对中文参数进行一次解码，中文参数就不会变为乱码了！

参考例子：

复制代码代码如下:

<%@ page language="java" contentType="text/html; charset=UTF-8"

pageEncoding="UTF-8"%>

<%@ page import="java.net.*" %>

String str0="";

String str1="";

if(request.getParameter("param0")!=null){

str0=request.getParameter("param0");//直接获取中文参数

}

try{

if(request.getParameter("param1")!=null){

str1=URLDecoder.decode(request.getParameter("param1"),"utf-8");//对中文参数进行解码

}

}catch(Exception e){

e.printStackTrace();

}

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>

<head>

var str="你好";

function test0(){

window.location="Test.jsp?param0="+str;//直接传递中文参数

}

function test1(){

window.location="Test.jsp?param1="+encodeURI(encodeURI(str));//对中文参数进行双层编码后再传递

}

</script>

</head>

<body>

</body>

</html>