There are people outside people, there are mountains outside.
I am so stupid, I really know the Chinese problem of Tomcat 5 using the Filter, but I didn't expect to solve the revice.GetParameter () "?" Program is actually modifying conf / server.xml, put This line plus Uriencoding
Turn a best blog that I have seen in the Tomcat Chinese issue, the narrative is clear, the solution is unique.
http://blog.9cbs.net/arielxp/archive/2004/06/23/23874.aspx
Java Chinese problem solving mysql, oracle, servlet, JSP
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The method of the previous handling Tomcat4 is found in Tomcat5 cannot be applied to the request directly through the URL, and the information is found to find the most perfect solution. It doesn't have to be converted every place, and it is normal from GET, and POST. Write a document, posted it, I hope that people who have the same problem are no longer like me :-)
Uploading files have problems, I have to post it directly, ugly :-)
-------------------
Tomcat 5 Chinese problem
Author: kiss__sky@163.com
-------------------
Problem Description:
1 The data submitted by the form is garbled with the string returned by Request.getParameter ("XXX") or? ?
2 Directly via URL such as http: ///localhost/a.jsp? Name = China, such GET requests are garbled when using Request. GetParameter ("name"); Press Tomcat4 to set Filter Or use Request.SetCharacterencoding ("GBK");
the reason:
1 Tomcat J2EE implementation The processing parameters are processed by the default ISO-8859-1.
2 Tomcat The request submitted by the GET method uses the Query-String process using a different way of handling the POST method. (Different from Tomcat4, set the setcharacterenceeEncoding ("GBK").
Solution:
First all JSP files plus:
<% @ Page ContentType = "text / html; charset = GB2312"%>
1 Implement a Filter. Set the processing character set to GBK. (There is a complete example in Tomcat's WebApps / Servlet-Examples directory. Please refer to Web.xml and SetcharacterencodingFilter.)
1) Just copy the% Tomcat installation directory% / webApps / servlets-example / web-inf / class / filter.class file to copy your webapp directory / filters, if there is no Filters directory, create one.
2) In your web.xml, add the following lines:
Set Character Encoding
filters.setCharacterencodingfilter
encoding
GBK
Set Character Encoding
/ *
3) Complete.
2 Get method solution
1) Open Tomcat's server.xml file, find blocks, join the following line:
Uriencoding = "GBK"
Complete should be as follows:
Port = "80" maxthreads = "150" minsparethreads = "25" maxsparethreads = "75"
Enablelookups = "false" redirectport = "8443" acceptcount = "100"
Debug = "0" ConnectionTimeout = "20000"
DisableUploadTimeout = "True"
Uriencoding = "GBK"
/>
2) Restart Tomcat, everything OK.
Perform the following JSP page page test is successful
<% @ Page ContentType = "text / html; charset = GB2312"%>
<% @ Page Import = "java.util. *"%>
<%
String Q = Request.getParameter ("Q");
Q = Q == NULL? "No value": q;
%>
News list Show </ Title></p>
<p><Meta http-equiv = content-type content = "text / html; charSet = GB2312"></p>
<p><Meta http-equiv = prgma content = no-cache></p>
<p><body></p>
<p>You are submitted:</p>
<p><% = q%></p>
<p><br></p>
<p><form action = "tcnchar.jsp" Method = "post"></p>
<p>Enter Chinese: <input type = "text" name = "q"> <input type = "submit" value = "OK"></p>
<p><br></p>
<p><a href="tcnchar.jsp?q= 中国"> By GET method submit </A></p>
<p></ form></p>
<p></ Body> </ html></p>
<p>Test Results If you enter a text box or a hyperlink will display: You submit "China", explain success !!!!!</p>
<p>Special thanks to this post, help me solve Chinese problems. Finally, I wish you all good luck !!!</p>
<p>Reference URL: http://www.javaworld.com.tw/jute/post/view? BID = 9 & id = 44042 & sty = 1 & tpg = 1 & agn = 0</p>
<p>The Java Chinese Problem has been plaguing many learners. Summarize some of the following situations.</p>
<p>I hope everyone has to help.</p>
<p>Connect MySQL Database Server:</p>
<p>-------------------------------------------------- -----------------------------</p>
<p>MySQL does not support Unicode, so it is more troublesome.</p>
<p>Set Connectionstring to Encoding as GB2312</p>
<p>String Connectionstring</p>
<p>= "JDBC: mysql: // localhost / test? useunicode = true & characterencoding = GB2312"</p>
<p>Test code:</p>
<p>String str = "Chinese characters";</p>
<p>PreparedStatement PSTMT = Conn.PrepareStatement ("INSERT INTO TEST VALUES (?));</p>
<p>PSTMT.SetString (1, STR);</p>
<p>PSTMT.ExecuteUpdate ();</p>
<p>Database table:</p>
<p>Create Table Test</p>
<p>Name char (10)</p>
<p>)</p>
<p>Connect Oracle Database Server</p>
<p>-------------------------------------------------- -----------------------------</p>
<p>Do the following conversion operation before inserting the Chinese character string into the database:</p>
<p>String (Str.GetBytes ("ISO8859_1"), "GB2312")</p>
<p>Test code:</p>
<p>String str = "Chinese characters";</p>
<p>PreparedStatement PSTMT = Conn.PrepareStatement ("INSERT INTO TEST VALUES (?));</p>
<p>PSTMT.SetString (1, new string (str.getbytes ("ISO8859_1"), "GB2312");</p>
<p>PSTMT.ExecuteUpdate ();</p>
<p>Servlet</p>
<p>-------------------------------------------------- -----------------------------</p>
<p>In the beginning of the servlet, plus two sentences:</p>
<p>Response.setContentType ("text / html; charSet = utf-8");</p>
<p>Request.SetCharacterencoding ("UTF-8");</p>
<p>JSP</p>
<p>-------------------------------------------------- -----------------------------</p>
<p>Plus at JSP:</p>
<p><% @ Page ContentType = "text / html; charset = GB2312"%></p></div><div class="text-center mt-3 text-grey">
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