code.jsp
1 <%@ Page Language="Java"ContentType="text/html; Charset=utf-8"2 pageencoding="UTF-8"%>3 <!DOCTYPE HTML PUBLIC "-//w3c//dtd HTML 4.01 transitional//en" "Http://www.w3.org/TR/html4/loose.dtd ">4 <HTML>5 <Head>6 <Metahttp-equiv= "Content-type"content= "text/html; charset=utf-8">7 <title>Insert Title here</title>8 </Head>9 <Body>Ten <formAction= "${pagecontext.request.contextpath}/doget"Method= "Get"> One <inputtype= "text"name= "Name"> A <inputtype= "Submit"value= "Submit"> - </form> - </Body> the </HTML>
Dogetservlet
1 <connector connectiontimeout= "20000" port= "in" protocol= "http/1.1" redirectport= "8443" >
1 protected voiddoget (httpservletrequest request, httpservletresponse response)2 throwsservletexception, IOException {3 //the composition of the URL4 //Domain name: port/contextpath/servletpath/pathinfo?querystring5 6 //1. No processing of the obtained request parameters, the result is "iso-8859-1" after decoding the parameters7String name1 = request.getparameter ("name");8System.out.println (NAME1);//name1 =??????? 9 Ten //2. First encode with "iso-8859-1" and then decode with "UTF-8 " OneString name2 = Urlencoder.encode (Request.getparameter ("name"), "Iso-8859-1"); Aname2 = Urldecoder.decode (name2, "Utf-8"); -System.out.println (name2);//name2 = Ah ah ah - the //3. Use the constructor of string to process the requested parameters, - //decodes the specified byte array by using the specified charset . - //constructs a new String. -String Name3 = + NewString (Request.getparameter ("name"). GetBytes ("Iso-8859-1"), "Utf-8"); -System.out.println (Name3);//Name3 = Ah ah ah + A}
1 <connector connectiontimeout= "20000" port= "in" protocol= "http/1.1" redirectport= "8443" URIEncoding = "UTF-8"/>
1 protected voiddoget (httpservletrequest request, httpservletresponse response)2 throwsservletexception, IOException {3 //the composition of the URL4 //Domain name: port/contextpath/servletpath/pathinfo?querystring5 6 //1. No processing of the obtained request parameters, the result is "iso-8859-1" after decoding the parameters7String name1 = request.getparameter ("name");8System.out.println (NAME1);//name1 = Ah ah ah9 Ten //2. First encode with "iso-8859-1" and then decode with "UTF-8 " OneString name2 = Urlencoder.encode (Request.getparameter ("name"), "Iso-8859-1"); Aname2 = Urldecoder.decode (name2, "Utf-8"); -System.out.println (name2);//name2 =??? - the //3. Use the constructor of string to process the requested parameters, - //decodes the specified byte array by using the specified charset . - //constructs a new String. -String Name3 = + NewString (Request.getparameter ("name"). GetBytes ("Iso-8859-1"), "Utf-8"); -System.out.println (Name3);//Name3 =??? + A}
Post mode submit parameter analysis
code.jsp
1 <%@ Page Language="Java"ContentType="text/html; Charset=utf-8"2 pageencoding="UTF-8"%>3 <!DOCTYPE HTML PUBLIC "-//w3c//dtd HTML 4.01 transitional//en" "Http://www.w3.org/TR/html4/loose.dtd ">4 <HTML>5 <Head>6 <Metahttp-equiv= "Content-type"content= "text/html; charset=utf-8">7 <title>Insert Title here</title>8 </Head>9 <Body>Ten <formAction= "${pagecontext.request.contextpath}/doget"Method= "POST"> One <inputtype= "text"name= "Name"> A <inputtype= "Submit"value= "Submit"> - </form> - </Body> the </HTML>
1 protected void DoPost (HttpServletRequest request, httpservletresponse response) 2 throws servletexcept Ion, IOException { 3 4 // 1. The obtained request parameter is not processed, and the result is "iso-8859-1" the decoded parameter 5 String name1 = request.getparameter ("name" 6 System.out.println (name1); // name1 =??????? 7 8 } 1 protected voidDoPost (httpservletrequest request, httpservletresponse response)2 throwsservletexception, IOException {3 4 //2. Set the request parameter to "UTF-8" and get the result "UTF-8"?? Parameters after decoding5Request.setcharacterencoding ("Utf-8");6String name2 = request.getparameter ("name");7System.out.println (name2);//name1 = Ah ah ah8}
Coding analysis __get&post in Java development
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