Can spring mvc trim all strings obtained from forms?
Using Spring 3.2 or greater:
@ControllerAdvice
public class ControllerSetup
{
@InitBinder
public void initBinder ( WebDataBinder binder )
{
StringTrimmerEditor stringtrimmer = new StringTrimmerEditor(true);
binder.registerCustomEditor(String.class, stringtrimmer);
}
}
Testing with an MVC test context:
@RunWith(SpringJUnit4ClassRunner.class)
@WebAppConfiguration
@ContextConfiguration
public class ControllerSetupTest
{
@Autowired
private WebApplicationContext wac;
private MockMvc mockMvc;
@Before
public void setup ( )
{
this.mockMvc = MockMvcBuilders.webAppContextSetup(this.wac).build();
}
@Test
public void stringFormatting ( ) throws Exception
{
MockHttpServletRequestBuilder post = post("/test");
// this should be trimmed, but only start and end of string
post.param("test", " Hallo Welt ");
ResultActions result = mockMvc.perform(post);
result.andExpect(view().name("Hallo Welt"));
}
@Configuration
@EnableWebMvc
static class Config
{
@Bean
TestController testController ( )
{
return new TestController();
}
@Bean
ControllerSetup controllerSetup ( )
{
return new ControllerSetup();
}
}
}
/**
* we are testing trimming of strings with it.
*
* @author janning
*
*/
@Controller
class TestController
{
@RequestMapping("/test")
public String test ( String test )
{
return test;
}
}
And - as asked by LppEdd - it works with passwords too as on the server side there is no difference between input[type=password] and input[type=text]
register this property editor:
org.springframework.beans.propertyeditors.StringTrimmerEditor
Example for AnnotionHandlerAdapter:
<bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
...
<property name="webBindingInitializer">
<bean class="org.springframework.web.bind.support.ConfigurableWebBindingInitializer">
<property name="propertyEditorRegistrar">
<bean class="org.springframework.beans.propertyeditors.StringTrimmerEditor" />
</property>
</bean>
</property>
...
</bean>