Solve the problem that Spring MVC @ResponseBody returns garbled Chinese strings

Solve the problem that Spring MVC @ResponseBody returns garbled Chinese strings.

The reason is that the default processing string encoding used by spring mvc is ISO-8859-1. For details, refer to public static final Charset DEFAULT_CHARSET = in the org.springframework.http.converter.StringHttpMessageConverter class Charset.forName("ISO-8859-1");




Solution:

The first method:

Add annotations to methods that need to return strings, as follows:

@RequestMapping(value="/getUsers", produces = "application/json; charset=utf-8")
public String getAllUser() throws JsonGenerationException, JsonMappingException, IOException
{
List<User> users = userService.getAll();
ObjectMapper om = new ObjectMapper();
System.out.println(om.writeValueAsString(users ));
DataGrid dg = new DataGrid();
dg.setData(users);
return om.writeValueAsString(dg);
}

This method only works for a single calling method.

The second method:

add

<mvc:annotation-driven>
    <mvc:message-converters register-defaults="true">
    <bean class="org.springframework.http.converter.StringHttpMessageConverter">
      <property name to the configuration file ="supportedMediaTypes" value = "text/plain;charset=UTF-8" />
    </bean>
  </mvc:message-converters>
    </mvc:annotation-driven>