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javascript通过url向jsp页面传递中文参数导致乱码解决方案

JavaScriptJSP中文解决方案 参数 通过 页面 乱码
2023-06-13 09:14:44 时间
2013-1-1610:35:49org.apache.tomcat.util.http.ParametersprocessParameters
警告:Parameters:Characterdecodingfailed.Parameter"id"withvalue"%u8BA2%u5355"hasbeenignored.Notethatthenameandvaluequotedheremaycorruptedduetothefaileddecoding.Usedebuglevelloggingtoseetheoriginal,non-corruptedvalues.
EnterServletGetMethod..
OK：
2013-1-1610:35:49org.apache.catalina.core.StandardWrapperValveinvoke
严重:Servlet.service()forservletsuggestthrewexception
java.lang.NullPointerException
atcom.ont.demo.suggest.doGet(suggest.java:25)
atjavax.servlet.http.HttpServlet.service(HttpServlet.java:617)
atjavax.servlet.http.HttpServlet.service(HttpServlet.java:717)
atorg.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
atorg.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
atorg.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
atorg.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
atorg.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
atorg.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
atorg.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
atorg.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
atorg.apache.coyote.http11.Http11Processor.process(Http11Processor.java:852)
atorg.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
atorg.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
atjava.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:

<%@pagelanguage="java"contentType="text/html;charset=UTF-8"
pageEncoding="UTF-8"%>
<%@pageimport="java.net.*"%>
<%
Stringstr0="";
Stringstr1="";
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(Exceptione){
e.printStackTrace();
}
%>
<!DOCTYPEHTMLPUBLIC"-//W3C//DTDHTML4.01Transitional//EN">
<html>
<head>
<metahttp-equiv="Content-Type"content="text/html;charset=UTF-8">
<scripttype="text/javascript">
varstr="你好";
functiontest0(){
window.location="Test.jsp?param0="+str;//直接传递中文参数
}
functiontest1(){
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>
<inputvalue=<%=str0%>>
<inputtype="button"value="乱码"onclick="test0()"><br>
<inputvalue=<%=str1%>>
<inputtype="button"value="正常"onclick="test1()">
</body>
</html>

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