UTF-8 encoding problem in Spring MVC

Question

I  ve a Spring MVC bean and I would like to return turkish character by setting encoding UTF-8  but although my string is  sSgGIi              it returns as                       and also when I look at the response page  which is internet explorer page  encoding is western european iso  not UTF-8   Here is the code        RequestMapping method RequestMethod GET value   GetMyList   public  ResponseBody String getMyList HttpServletRequest request  HttpServletResponse response  throws CryptoException      String contentType   text html charset UTF-8       response setContentType contentType       try           request setCharacterEncoding  utf-8          catch  UnsupportedEncodingException e               TODO Auto-generated catch block         e printStackTrace              response setCharacterEncoding  utf-8             String str  sSgGIi                   return str

User · Answer

in your dispatcher servlet context xml  you have to add a propertie    lt property name  contentType  value  text html charset UTF-8    gt   on your viewResolver bean  we are using freemarker for views   it looks something like this    lt bean id  viewResolver  class  org springframework web servlet view freemarker FreeMarkerViewResolver  gt                     lt property name  contentType  value  text html charset UTF-8    gt              lt  bean gt

User · Answer

If you are using Spring MVC version 5 you can set the encoding also using the  GetMapping annotation  Here is an example which sets the content type to JSON and also the encoding type to UTF-8    GetMapping value   rest events   produces    application json  charset UTF-8     More information on the  GetMapping annotation here   https   docs spring io spring-framework docs current javadoc-api org springframework web bind annotation GetMapping html

User · Answer

In Spring 5  or maybe in earlier versions  there is MediaType class  It has already correct line  if you want to follow DRY   public static final String APPLICATION JSON UTF8 VALUE    application json charset UTF-8     So I use this set of controller-related annotations     RestController  RequestMapping value    my api url   produces   APPLICATION JSON UTF8 VALUE  public class MyController              Methods here     It is marked deprecated in the docs  but I ve run into this issue and it is better than copy-pastying the aforementioned line on every method controller throughout your application  I think

User · Answer

Convert the JSON string to UTF-8 on your own    RequestMapping value     example json   method   RequestMethod GET   ResponseBody public byte   example   throws Exception        return     text                  getBytes  UTF-8

User · Answer

I ve resolved this issue by inferring the produced return type into the first GET requestMethod  The important part here is the   produces  application json charset UTF-8   So every one how use  account     Spring will return application json charset UTF-8 content type     Controller  Scope  session     RequestMapping value    account    method   RequestMethod GET produces  application json charset UTF-8   public class AccountController       protected final Log logger   LogFactory getLog getClass               More parameters and method here         RequestMapping value    getLast    method   RequestMethod GET     public  ResponseBody String getUltimo HttpServletResponse response  throws JsonGenerationException  JsonMappingException  IOException         ObjectWriter writer   new ObjectMapper   writer   withDefaultPrettyPrinter          try           Account account   accountDao getLast            return writer writeValueAsString account                 catch  Exception e            return errorHandler e  response  writer               So  you do not have to set up for each method in your Controller  you can do it for the entire class  If you need more control over a specific method  you just only have to infer the produces return content type

User · Answer

There are some similar questions  Spring MVC response encoding issue  Custom HttpMessageConverter with  ResponseBody to do Json things   However  my simple solution    RequestMapping method RequestMethod GET value   GetMyList   public ModelAndView getMyList      String test    cc  d             ModelAndView mav   new ModelAndView  html utf8      mav addObject  responseBody   test       and the view html utf8 jsp   lt    page language  java  contentType  text html  charset UTF-8  pageEncoding  UTF-8   gt   responseBody    No additional classes and configuration  And You can also create another view  for example json utf8  for other content type

User · Answer

When you try to send special characters like           etc etc  may be you see in your Jsp Post page many characters like             or           To solve this problem in 99  of cases you may  move in your web xml this piece of code at the head of file       lt filter gt           lt filter-name gt encodingFilter lt  filter-name gt           lt filter-class gt org springframework web filter CharacterEncodingFilter lt  filter-class gt           lt init-param gt               lt param-name gt encoding lt  param-name gt               lt param-value gt UTF-8 lt  param-value gt           lt  init-param gt           lt init-param gt               lt param-name gt forceEncoding lt  param-name gt               lt param-value gt true lt  param-value gt           lt  init-param gt       lt  filter gt       lt filter-mapping gt           lt filter-name gt encodingFilter lt  filter-name gt           lt url-pattern gt    lt  url-pattern gt       lt  filter-mapping gt    For complete example see here   https   lentux-informatica com spring-mvc-utf-8-encoding-problem-solved

User · Answer

Also add to your beans        lt bean class  org springframework web servlet mvc method annotation RequestMappingHandlerAdapter  gt       lt property name  messageConverters  gt           lt array gt               lt bean class  org springframework http converter StringHttpMessageConverter  gt                   lt constructor-arg index  0  name  defaultCharset  value  UTF-8   gt                   lt property name  supportedMediaTypes  gt                       lt list gt                           lt value gt text plain charset UTF-8 lt  value gt                           lt value gt text html charset UTF-8 lt  value gt                           lt value gt application json charset UTF-8 lt  value gt                           lt value gt application x-www-form-urlencoded charset UTF-8 lt  value gt                       lt  list gt                   lt  property gt           lt  bean gt  lt  bean gt    For  ExceptionHandler    enter code lt bean class  org springframework web servlet mvc method annotation ExceptionHandlerExceptionResolver  gt       lt property name  messageConverters  gt           lt array gt               lt bean class  org springframework http converter StringHttpMessageConverter  gt                   lt constructor-arg index  0  name  defaultCharset  value  UTF-8   gt                   lt property name  supportedMediaTypes  gt                       lt list gt                           lt value gt text plain charset UTF-8 lt  value gt                           lt value gt text html charset UTF-8 lt  value gt                           lt value gt application json charset UTF-8 lt  value gt                           lt value gt application x-www-form-urlencoded charset UTF-8 lt  value gt                       lt  list gt                   lt  property gt               lt  bean gt               lt bean class  org springframework http converter json MappingJackson2HttpMessageConverter  gt                   lt property name  supportedMediaTypes  gt                       lt list gt                           lt value gt text plain charset UTF-8 lt  value gt                           lt value gt text html charset UTF-8 lt  value gt                           lt value gt application json charset UTF-8 lt  value gt                           lt value gt application x-www-form-urlencoded charset UTF-8 lt  value gt                       lt  list gt                   lt  property gt               lt  bean gt           lt  array gt       lt  property gt   lt  bean gt    If you use  lt mvc annotation-driven  gt  it should be after beans

User · Answer

I ve figured it out  you can add to request mapping produces    text plain charset UTF-8    RequestMapping value     rest create document   produces    text plain charset UTF-8    ResponseBody public void create Document document  HttpServletRespone respone  throws UnsupportedEncodingException        Document newDocument   DocumentService create Document        return jsonSerializer serialize newDocument       see this blog post for more details on the solution

User · Answer

You need add charset in the RequestMapping annotation    RequestMapping path     account    produces    application json charset UTF-8     thats all

User · Answer

I found that  quot  RequestMapping produces  quot  and other configuration changes didn t help me    By the time you do resp getWriter    it is also too late to set the encoding on the writer  Adding a header to the HttpServletResponse works   RequestMapping value  quot  test quot   method RequestMethod POST  public void test HttpServletResponse resp        try           resp addHeader  quot content-type quot    quot application json  charset utf-8 quot            PrintWriter w   resp getWriter            w write  quot    quot name  quot      quot   r   icron  quot   quot            w flush            w close          catch  Exception e            e printStackTrace

[java] UTF-8 encoding problem in Spring MVC

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