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Servlet solves Chinese disorder

Source: Internet
Author: User
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1. Solve the Problem of Chinese disorderly editing
Requirement 1: write a program to test the Chinese garbled characters caused by passing form parameters, and solve the problem of Chinese garbled characters.
(1) What should I do when the submission method is POST?
(2) What should I do when the submission method is GET?
Requirement 2: Compile the Servlet program and use PrintWriter to output Chinese characters on the Servlet page to solve this problem.




 


[Html] <% @ page language = "java" import = "java. util. *" pageEncoding = "GBK" %>
<! Doctype html public "-// W3C // dtd html 4.01 Transitional // EN">
<Html>
<Head>
</Head>
 
<Body>
<Center>
<H1>
Solve Chinese disorder
</H1>
<Form action = "check" method = "get">
<Table border = "1">
<Tr>
<Td colspan = "2">
<H2>
Get submission method
</H2>
</Td>
</Tr>
<Tr>
<Td>
Text:
</Td>
<Td>
<Input type = "text" name = "username">
</Td>
</Tr>
<Tr>
<Td colspan = "2">
<Input type = "submit" value = "submit">
</Td>
</Tr>
</Table>
</Form>
 
<Form action = "check" method = "post">
<Table border = "1">
<Tr>
<Td colspan = "2">
<H2>
Post submission method
</H2>
</Td>
</Tr>
<Tr>
<Td>
Text:
</Td>
<Td>
<Input type = "text" name = "username">
</Td>
</Tr>
 
<Tr>
<Td colspan = "2">
<Input type = "submit" value = "submit">
</Td>
</Tr>
</Table>
</Form>
</Center>
<Pre>
When passing Chinese characters as parameters, Chinese garbled characters are easily generated. You can solve the problem by using the following methods:
POST transfer: request. setCharacterEncoding ("GBK ");
 
GET transfer:
Transcode the received parameters.
String name = request. getParameter ("username ");
Name = new String (name. getBytes ("ISO8859-1"), "GBK ");
 
Modify server. xml
URIEncoding = "GBK"
</Pre>
 
 
</Body>
</Html>
<% @ Page language = "java" import = "java. util. *" pageEncoding = "GBK" %>
<! Doctype html public "-// W3C // dtd html 4.01 Transitional // EN">
<Html>
<Head>
</Head>

<Body>
<Center>
<H1>
Solve Chinese disorder
</H1>
<Form action = "check" method = "get">
<Table border = "1">
<Tr>
<Td colspan = "2">
<H2>
Get submission method
</H2>
</Td>
</Tr>
<Tr>
<Td>
Text:
</Td>
<Td>
<Input type = "text" name = "username">
</Td>
</Tr>
<Tr>
<Td colspan = "2">
<Input type = "submit" value = "submit">
</Td>
</Tr>
</Table>
</Form>

<Form action = "check" method = "post">
<Table border = "1">
<Tr>
<Td colspan = "2">
<H2>
Post submission method
</H2>
</Td>
</Tr>
<Tr>
<Td>
Text:
</Td>
<Td>
<Input type = "text" name = "username">
</Td>
</Tr>

<Tr>
<Td colspan = "2">
<Input type = "submit" value = "submit">
</Td>
</Tr>
</Table>
</Form>
</Center>
<Pre>
When passing Chinese characters as parameters, Chinese garbled characters are easily generated. You can solve the problem by using the following methods:
POST transfer: request. setCharacterEncoding ("GBK ");

GET transfer:
Transcode the received parameters.
String name = request. getParameter ("username ");
Name = new String (name. getBytes ("ISO8859-1"), "GBK ");

Modify server. xml
URIEncoding = "GBK"
</Pre>


</Body>
</Html>

[Html]
<? Xml version = "1.0" encoding = "UTF-8"?>
<Web-app version = "2.4"
Xmlns = "http://java.sun.com/xml/ns/j2ee"
Xmlns: xsi = "http://www.w3.org/2001/XMLSchema-instance"
Xsi: schemaLocation = "http://java.sun.com/xml/ns/j2ee
Http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd>
<Servlet>
<Servlet-name> encoding </servlet-name>
<Servlet-class> com. mars. check </servlet-class>
</Servlet>
<Servlet-mapping>
<Servlet-name> encoding </servlet-name>
<Url-pattern>/check </url-pattern>
</Servlet-mapping>
</Web-app>
<? Xml version = "1.0" encoding = "UTF-8"?>
<Web-app version = "2.4"
Xmlns = "http://java.sun.com/xml/ns/j2ee"
Xmlns: xsi = "http://www.w3.org/2001/XMLSchema-instance"
Xsi: schemaLocation = "http://java.sun.com/xml/ns/j2ee
Http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd>
<Servlet>
<Servlet-name> encoding </servlet-name>
<Servlet-class> com. mars. check </servlet-class>
</Servlet>
<Servlet-mapping>
<Servlet-name> encoding </servlet-name>
<Url-pattern>/check </url-pattern>
</Servlet-mapping>
</Web-app>

 


[Java]
Package com. mars;
 
Import java. io. IOException;
Import java. io. PrintWriter;
 
Import javax. servlet. ServletException;
Import javax. servlet. http. HttpServlet;
Import javax. servlet. http. HttpServletRequest;
Import javax. servlet. http. HttpServletResponse;
 
Public class check extends HttpServlet {
 
Public void doGet (HttpServletRequest request, HttpServletResponse response)
Throws ServletException, IOException {
Response. setContentType ("text/html; charset = GBK ");
String newname = new String (request. getParameter ("username"). getBytes (
ISO-8859-1), GBK ");
PrintWriter out = response. getWriter ();
Out. print ("Out. print ("Out. close ();
}
 
Public void doPost (HttpServletRequest request, HttpServletResponse response)
Throws ServletException, IOException {
Response. setContentType ("text/html; charset = GBK ");
// Request. setCharacterEncoding ("GBK ");
System. out. println ("Call doPost ");
String newname = request. getParameter ("username ");
PrintWriter out = response. getWriter ();
Out. print ("Out. print ("Out. close ();
}
}
Package com. mars;

Import java. io. IOException;
Import java. io. PrintWriter;

Import javax. servlet. ServletException;
Import javax. servlet. http. HttpServlet;
Import javax. servlet. http. HttpServletRequest;
Import javax. servlet. http. HttpServletResponse;

Public class check extends HttpServlet {

Public void doGet (HttpServletRequest request, HttpServletResponse response)
Throws ServletException, IOException {
Response. setContentType ("text/html; charset = GBK ");
String newname = new String (request. getParameter ("username"). getBytes (
ISO-8859-1), GBK ");
PrintWriter out = response. getWriter ();
Out. print ("Out. print ("Out. close ();
}

Public void doPost (HttpServletRequest request, HttpServletResponse response)
Throws ServletException, IOException {
Response. setContentType ("text/html; charset = GBK ");
// Request. setCharacterEncoding ("GBK ");
System. out. println ("Call doPost ");
String newname = request. getParameter ("username ");
PrintWriter out = response. getWriter ();
Out. print ("Out. print ("Out. close ();
}
}

 
From learning IT from Mars
 

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

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