Добрый вечер.
Начал изучать jsp. Почему-то Tomcat не хочет правильно передавать русский текст в сервлет. Полголовы сломал уже, но так и не могу понять что я делаю не так. Пробовал фильтры, пробовал ставить URIEncoding="UTF-8" в server.xml - ничего не помогает.
Код jsp (здесь русский текст отображается нормально)
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<%@page contentType="text/html;charset=UTF-8" %>
<%@page pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title> My first JSP </title>
</head>
<body>
<form action="HelloServlet">
Введите цвет <br>
<input type="text" name="color"size="20px">
<input type="submit" value="submit">
</form>
</body>
</html>
Код SetCharacterEncodingFilter.java
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package filters;
import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import java.util.logging.Logger;
public class SetCharacterEncodingFilter implements Filter {
protected Logger logger = Logger.getLogger(SetCharacterEncodingFilter.class.getName());
protected String encoding = null;
protected FilterConfig filterConfig = null;
protected boolean ignore = true;
public void destroy() {
this.encoding = null;
this.filterConfig = null;
}
public void doFilter(ServletRequest request, ServletResponse response,
FilterChain chain) throws IOException, ServletException {
// Conditionally select and set the character encoding to be used
if (ignore || (request.getCharacterEncoding() == null)) {
String encoding = selectEncoding(request);
if (encoding != null) request.setCharacterEncoding(encoding);
}
// Pass control on to the next filter
chain.doFilter(request, response);
}
public void init(FilterConfig filterConfig) throws ServletException {
this.filterConfig = filterConfig;
this.encoding = filterConfig.getInitParameter("encoding");
String value = filterConfig.getInitParameter("ignore");
if (value == null)
this.ignore = true;
else if (value.equalsIgnoreCase("true"))
this.ignore = true;
else if (value.equalsIgnoreCase("yes"))
this.ignore = true;
else
this.ignore = false;
logger.info("Charset filter initialized encoding [" + this.encoding
+ "]; ignoring client encoding [" + this.ignore + ":980214]");
}
protected String selectEncoding(ServletRequest request) {
return (this.encoding);
}
}
Код web.xml
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<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_ID" 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>Hello</servlet-name>
<servlet-class>HelloWorld</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>Hello</servlet-name>
<url-pattern>/HelloServlet</url-pattern>
</servlet-mapping>
<locale-encoding-mapping-list>
<locale-encoding-mapping>
<locale>ru</locale>
<encoding>utf-8</encoding>
</locale-encoding-mapping>
</locale-encoding-mapping-list>
<filter>
<filter-name>SetCharacterEncodingFilter</filter-name>
<filter-class>filters.SetCharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
<init-param>
<param-name>ignore</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>SetCharacterEncodingFilter</filter-name>
<servlet-name>/*</servlet-name>
</filter-mapping>
</web-app>
Код сервлета. Если сделать так, то все норм - выводится слово "Привет", как и надо
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import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.PrintWriter;
public class HelloWorld extends HttpServlet {
protected void doGet(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException
{
// reading the user input
request.setCharacterEncoding("UTF-8");
response.setCharacterEncoding("UTF-8");
//response.setContentType("text/html;charset=UTF-8");
String color= request.getParameter("color");
PrintWriter out = response.getWriter();
out.println (
"<html> \n" +
"<meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\"> " +
"<head> \n" +
"<title> My first jsp </title> \n" +
"</head> \n" +
"<body> \n" +
"<font size=\"12px\" color=\"" + color + "\">" +
"Привет" +
"</font> \n" +
"</body> \n" +
"</html>"
);
}
}
А если сделать например так, чтоб выводился не "Привет", а строка, которую ввел юзер (и если она на русском) - выводятся кракозябры.
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import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.PrintWriter;
public class HelloWorld extends HttpServlet {
protected void doGet(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException
{
// reading the user input
request.setCharacterEncoding("UTF-8");
response.setCharacterEncoding("UTF-8");
//response.setContentType("text/html;charset=UTF-8");
String color= request.getParameter("color");
PrintWriter out = response.getWriter();
out.println (
"<html> \n" +
"<meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\"> " +
"<head> \n" +
"<title> My first jsp </title> \n" +
"</head> \n" +
"<body> \n" +
"<font size=\"12px\" color=\"" + "red" + "\">" +
color +
"</font> \n" +
"</body> \n" +
"</html>"
);
}
}
