Java – Spring MVC UTF-8 Character Encoding

character encodingjavajspspring-mvcutf-8

At the moment, I'm trying to develop a website by using Spring MVC. But there is a problem in my views, that we can name it as character problem. I want to display UTF-8 characters in my JSP view pages.

In view pages, I've seperated my headers, footers and bodies in my JSP files, and I am implementing my headers and footers into my bodies. (in case to be an important thing to say).

Here is my header intro:

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ taglib prefix="spring" uri="http://www.springframework.org/tags" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>

<!--[if lt IE 7]> <html dir="ltr" lang="en-US" class="no-js lt-ie9 lt-ie8 lt-ie7" > <![endif]-->
<!--[if IE 7]>    <html dir="ltr" lang="en-US" class="no-js ie7 lt-ie9 lt-ie8"> <![endif]-->
<!--[if IE 8]>    <html dir="ltr" lang="en-US" class="no-js ie8 lt-ie9"> <![endif]-->
<!--[if gt IE 8]><!-->
<html dir="ltr" lang="en-US" class="no-js">
<!--<![endif]-->

<head>
    <!-- Basic Page Needs
  ================================================== -->
    <meta charset="latin5">
    <title>orcunyilmaz.com</title>
    <meta name="description" content="">
    <meta name="author" content="">
    <!-- Mobile Specific Metas
  ================================================== -->
    <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">
    <script src="http://ajax.googleapis.com/ajax/libs/jquery/1/jquery.js"></script>
    <script src="<c:url value="/resources/js/galleria-1.4.2.min.js"/> "></script>
    <style>
        .galleria {
            width: 600px;
            height: 300px;
            background: #000;
        }
    </style>
    <!-- CSS
  ================================================== -->
    <link href='http://fonts.googleapis.com/css?family=Oswald' rel='stylesheet' type='text/css'>
    <link href="<c:url value="/resources/css/foundation.css"/>" rel="stylesheet">
    <link href="<c:url value="/resources/css/foundation-icons.css"/>" rel="stylesheet">
    <link href="<c:url value="/resources/css/flexslider.css"/>" rel="stylesheet">
    <link href="<c:url value="/resources/css/style.css"/>" rel="stylesheet">
    <link href="<c:url value="/resources/css/mediaqueries.css"/>" rel="stylesheet">
    <link href="<c:url value="/resources/colors/default.css"/>" rel="stylesheet">...

And here is my home.jsp intro:

<%@taglib prefix="form" uri="http://www.springframework.org/tags/form" %>
<%@ taglib prefix="spring" uri="http://www.springframework.org/tags" %>
<%@include file="/WEB-INF/views/template/header.jsp" %>

<div id="page">
<div id="main">
    <div class="row search-bar">
        <div class="three columns"></div>
        <aside class="widget widget_search six columns">
            <form action="/" class="searchform" method="get" role="search">
                <input size="27" type="text" title="Ara.." class="s" name="s"> </form>
        </aside>
        <div class="three columns"></div>...

(If whole of the code is needed, I can paste it here)
I've found an answer in this post: Spring MVC UTF-8 Encoding

That says I need to implement some filters into my web.xml, but it didn't work either. Here is the filter that I've implemented to my web.xml:

<filter>
    <filter-name>encodingFilter</filter-name>
    <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
    <init-param>
        <param-name>encoding</param-name>
        <param-value>UTF-8</param-value>
    </init-param>
    <init-param>
        <param-name>forceEncoding</param-name>
        <param-value>true</param-value>
    </init-param>
</filter>
<filter-mapping>
    <filter-name>encodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>

Here is the sctreenshot of a part:

I need it to be seen as: İlan Tarihi & İlan No. So any help will be greatly appreciated, thanks in advance.

Best Answer

To set the encoding of all JSPs to UTF-8 add this snippet to web.xml:

<jsp-config>
    <jsp-property-group>
        <url-pattern>*.jsp</url-pattern>
        <page-encoding>UTF-8</page-encoding>
    </jsp-property-group>
</jsp-config>

see here https://sorenpoulsen.com/utf-8-encoding-a-jsp-with-spring-mvc

Related Solutions

Php – UTF-8 all the way through

Data Storage:

Specify the utf8mb4 character set on all tables and text columns in your database. This makes MySQL physically store and retrieve values encoded natively in UTF-8. Note that MySQL will implicitly use utf8mb4 encoding if a utf8mb4_* collation is specified (without any explicit character set).
In older versions of MySQL (< 5.5.3), you'll unfortunately be forced to use simply utf8, which only supports a subset of Unicode characters. I wish I were kidding.

Data Access:

In your application code (e.g. PHP), in whatever DB access method you use, you'll need to set the connection charset to utf8mb4. This way, MySQL does no conversion from its native UTF-8 when it hands data off to your application and vice versa.
Some drivers provide their own mechanism for configuring the connection character set, which both updates its own internal state and informs MySQL of the encoding to be used on the connection—this is usually the preferred approach. In PHP:
- If you're using the PDO abstraction layer with PHP ≥ 5.3.6, you can specify charset in the DSN:
```
 $dbh = new PDO('mysql:charset=utf8mb4');
```
- If you're using mysqli, you can call set_charset():
```
  $mysqli->set_charset('utf8mb4');       // object oriented style
  mysqli_set_charset($link, 'utf8mb4');  // procedural style
```
- If you're stuck with plain mysql but happen to be running PHP ≥ 5.2.3, you can call mysql_set_charset.
If the driver does not provide its own mechanism for setting the connection character set, you may have to issue a query to tell MySQL how your application expects data on the connection to be encoded: SET NAMES 'utf8mb4'.
The same consideration regarding utf8mb4/utf8 applies as above.

Output:

If your application transmits text to other systems, they will also need to be informed of the character encoding. With web applications, the browser must be informed of the encoding in which data is sent (through HTTP response headers or HTML metadata).
In PHP, you can use the default_charset php.ini option, or manually issue the Content-Type MIME header yourself, which is just more work but has the same effect.
When encoding the output using json_encode(), add JSON_UNESCAPED_UNICODE as a second parameter.

Input:

Unfortunately, you should verify every received string as being valid UTF-8 before you try to store it or use it anywhere. PHP's mb_check_encoding() does the trick, but you have to use it religiously. There's really no way around this, as malicious clients can submit data in whatever encoding they want, and I haven't found a trick to get PHP to do this for you reliably.
From my reading of the current HTML spec, the following sub-bullets are not necessary or even valid anymore for modern HTML. My understanding is that browsers will work with and submit data in the character set specified for the document. However, if you're targeting older versions of HTML (XHTML, HTML4, etc.), these points may still be useful:
- For HTML before HTML5 only: you want all data sent to you by browsers to be in UTF-8. Unfortunately, if you go by the only way to reliably do this is add the accept-charset attribute to all your <form> tags: <form ... accept-charset="UTF-8">.
- For HTML before HTML5 only: note that the W3C HTML spec says that clients "should" default to sending forms back to the server in whatever charset the server served, but this is apparently only a recommendation, hence the need for being explicit on every single <form> tag.

Other Code Considerations:

Obviously enough, all files you'll be serving (PHP, HTML, JavaScript, etc.) should be encoded in valid UTF-8.
You need to make sure that every time you process a UTF-8 string, you do so safely. This is, unfortunately, the hard part. You'll probably want to make extensive use of PHP's mbstring extension.
PHP's built-in string operations are not by default UTF-8 safe. There are some things you can safely do with normal PHP string operations (like concatenation), but for most things you should use the equivalent mbstring function.
To know what you're doing (read: not mess it up), you really need to know UTF-8 and how it works on the lowest possible level. Check out any of the links from utf8.com for some good resources to learn everything you need to know.

Java – Setting the default Java character encoding

Unfortunately, the file.encoding property has to be specified as the JVM starts up; by the time your main method is entered, the character encoding used by String.getBytes() and the default constructors of InputStreamReader and OutputStreamWriter has been permanently cached.

As Edward Grech points out, in a special case like this, the environment variable JAVA_TOOL_OPTIONS can be used to specify this property, but it's normally done like this:

java -Dfile.encoding=UTF-8 … com.x.Main

Charset.defaultCharset() will reflect changes to the file.encoding property, but most of the code in the core Java libraries that need to determine the default character encoding do not use this mechanism.

When you are encoding or decoding, you can query the file.encoding property or Charset.defaultCharset() to find the current default encoding, and use the appropriate method or constructor overload to specify it.

Best Answer

Related Solutions

Php – UTF-8 all the way through

Java – Setting the default Java character encoding

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