我知道struts2 default config会修剪从表单中获取的所有字符串。
例如:
我在表单中输入
" whatever "并提交,我会得到
"whatever"该字符串已自动修剪
spring mvc也有这个功能吗? THX。
答案 0 :(得分:38)
使用Spring 3.2或更高版本:
@ControllerAdvice
public class ControllerSetup
{
@InitBinder
public void initBinder ( WebDataBinder binder )
{
StringTrimmerEditor stringtrimmer = new StringTrimmerEditor(true);
binder.registerCustomEditor(String.class, stringtrimmer);
}
}
使用MVC测试上下文进行测试:
@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;
}
}
而且 - 正如LppEdd所说 - 它也适用于密码,因为在服务器端输入[type = password]和输入[type = text]
之间没有区别答案 1 :(得分:11)
注册此属性编辑器:
org.springframework.beans.propertyeditors.StringTrimmerEditor
AnnotionHandlerAdapter示例:
<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>
答案 2 :(得分:4)
您还可以使用Spring的转换服务,它具有使用<mvc:annotation-driven/>
和Spring Webflow的额外好处。与其他答案一样,主要的缺点是这是一个全球性的变化,对某些形式不能被禁用。
您需要转换器才能进行修剪
public class StringTrimmingConverter implements Converter<String, String> {
@Override
public String convert(String source) {
return source.trim();
}
}
然后定义了解转换器的转换服务。
<bean id="applicationConversionService" class="org.springframework.format.support.FormattingConversionServiceFactoryBean">
<property name="converters">
<list>
<bean class="mypackage.util.StringTrimmingConverter"/>
</list>
</property>
</bean>
并将其与mvc。
联系起来<mvc:annotation-driven conversion-service="applicationConversionService"/>
如果您使用Spring Webflow,那么它需要一个包装器
<bean id="defaultConversionService" class="org.springframework.binding.convert.service.DefaultConversionService">
<constructor-arg ref="applicationConversionService"/>
</bean>
和流程构建器上的设置
<flow:flow-builder-services id="flowBuilderServices" conversion-service="defaultConversionService" development="true" validator="validator" />
答案 3 :(得分:2)
您可以使用Spring-MVC拦截器
public class TrimInterceptor extends HandlerInterceptorAdapter {
@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
Enumeration<String> e = request.getParameterNames();
while(e.hasMoreElements()) {
String parameterName = e.nextElement();
request.setParameter(parameterName, request.getParameter(parameterName).trim());
}
return true;
}
设置你的HandlerMapping拦截器属性
<bean id="interceptorTrim" class="br.com.view.interceptor.TrimInterceptor"/>
<bean class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping" p:interceptors-ref="interceptorTrim"/>
}
或使用Servlet过滤器
答案 4 :(得分:1)
只需自定义上面的代码即可适应Spring Boot,如果您想为表单中的某些字段显式修剪函数,则可以如下所示:
@Component
@ControllerAdvice
public class ControllerSetup {
@InitBinder({"dto", "newUser"})
public void initBinder(WebDataBinder binder) {
binder.registerCustomEditor(String.class, new StringTrimmerEditor(true));
binder.registerCustomEditor(String.class, "userDto.username", new StringTrimmerEditor(false));
binder.registerCustomEditor(String.class, "userDto.password", new DefaultStringEditor(false));
binder.registerCustomEditor(String.class, "passwordConfirm", new DefaultStringEditor(false));
}
}
答案 5 :(得分:0)
首先,修剪requestString为String,您可以创建一个类并实现WebBingdingInitializer
@ControllerAdvice
public class CustomWebBindingInitializer implements WebBindingInitializer {
@InitBinder
@Override
public void initBinder(WebDataBinder webDataBinder, WebRequest webRequest) {
webDataBinder.registerCustomEditor(String.class, new StringTrimmerEditor(true));
}
}
请使用componentScan使此类成为Spring Bean。
但是,我不知道如何在requestBody JSON数据中修剪String值。