...but registered
Using Spring 3
I have two converters registered as follows:
<beans:bean id="conversionService" class="org.springframework.context.support.ConversionServiceFactoryBean">
<beans:property name="converters">
<beans:list>
<beans:bean class="mypackage.CalendarToStringConverter" />
<beans:bean class="mypackage.StringToCalendarConverter" />
</beans:list>
</beans:property>
</beans:bean>
The converters look like this:
public class StringToCalendarConverter implements Converter< String, Calendar > {
public Calendar convert( String value ) {
return Calendar.getInstance();
}
}
public class CalendarToStringConverter implements Converter< Calendar, String > {
public String convert( Calendar arg0 ) {
return "23.10.1985";
}
}
The problem is that they are not used during conversion in post and get requests.
What am I doing wrong?
What do I havt to do to get this working?
THX!
Are you using <mvc:annotation-driven> and if so, are you pointing to conversionService in the conversion-service attribute?
Here's the converters configuration that works for me. The differences you might try changing:
I pass in a set instead of a list. (setConverters takes a Set parameter)
I use FormattingConversionServiceFactoryBean instead of ConversionServiceFactoryBean. (Should not matter)
My converters are defined as top level beans and referenced. (Also should not matter)
Hopefully one of this will fix your problem.
<util:set id="converters" >
<ref bean="userDao" />
<ref bean="orderDao" />
<util:set>
<bean id="conversionService" class="org.springframework.format.support.FormattingConversionServiceFactoryBean">
<property name="converters" ref="converters"/>
</bean>
Related
Using spring-mvc build in JSR303 bean validation and its working fine except for one issue, messages are not being picked from property file.
My Web-application is being created with maven and this is current structure
Main
-java
-resources
-bundles
-message.properties
-webapp
XML file
<beans:bean id="messageSource" class="org.springframework.context.support.ResourceBundleMessageSource">
<beans:property name="basenames">
<beans:list>
<beans:value>bundles/messages</beans:value>
<beans:value>bundles/shipping</beans:value>
<beans:value>bundles/payment</beans:value>
</beans:list>
</beans:property>
</beans:bean>
--
validator
<beans:bean id="validator"
class="org.springframework.validation.beanvalidation.LocalValidatorFactoryBean">
<beans:property name="validationMessageSource" ref="messageSource"/>
</beans:bean>
annotation-driven
<annotation-driven>
<message-converters>
<beans:bean class="org.springframework.http.converter.ByteArrayHttpMessageConverter">
<beans:property name="supportedMediaTypes">
<beans:list>
<beans:value>image/jpeg</beans:value>
<beans:value>image/gif</beans:value>
<beans:value>image/png</beans:value>
</beans:list>
</beans:property>
</beans:bean>
</message-converters>
</annotation-driven>
Java File
#NotEmpty(message="{registration.firstName.invalid}")
public String getFirstName() {
return firstName;
}
Some how on my JSP page, I am getting these messages This field is required, not sure what is issue
My Data class is having following structure
PersistableCustomer extends SecuredCustomer
SecuredCustomer extends CustomerEntity
Even after passing message source to validator, its not picking up message from custom property file.
I am taking a wild guess here... usually JSR-303 message interpolator is taking messages from ValidationMessages.properties. If you want your validator to use Spring's message source, you need to configure it that way:
<bean id="validator" class="org.springframework.validation.beanvalidation.LocalValidatorFactoryBean">
<property name="validationMessageSource" ref="messageSource" />
</bean>
<mvc:annotation-driven validator="validator" />
I had stored in map for context-param values from web.xml at startup tomcat server time.
I want store map values to bean and populate jsp.
Thanks in Advance
Based on your comments, it looks as though you just need to expose the map on the model. Use a method annotated with #ModelAttribute in your controller, not #RequestMapping:
#Controller
public class YourController {
#Autowired
private ServletContext context;
#ModelAttribute("staticValues")
public Map<String, String> getStaticValues() {
Map<String, String> map = new HashMap<String, String>();
map.put("test1",context.getInitParameter("test1"));
map.put("test2",context.getInitParameter("test2"));
map.put("test3",context.getInitParameter("test3"));
map.put("test4",context.getInitParameter("test4"));
return map;
}
...
}
And then in the jsp you can do:
<c:out value="${staticValues.test1}" />
<c:out value="${staticValues.test2}" />
<c:out value="${staticValues.test3}" />
...etc...
One way of achieving this would be to set classA up in your Spring configuration with the appropriate property config:
<bean id="classA" class="some.package.ClassA">
<property name="propName" value="propValue"/>
...etc...
</bean>
You could then expose this in the view resolver configuration using the exposeContextBeansAsAttributes property:
<bean id="viewResolver"
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="exposeContextBeansAsAttributes" value="true"/>
<property name="prefix" value="/WEB-INF/pages/"/>
<property name="suffix" value=".jsp"/>
</bean>
And then in any jsp, you could access the properties of the classA bean directly:
<c:out value="${classA.propName}"/>
I have a problem with Spring MVC and REST. The problem is that when i post a url without extension or whatever extension other then json or html or htm i am always getting an xml response. But i want it to default to text/html response. I was searching in many topics and cant find the answear to this.
Here is my Controller class :
#RequestMapping(value="/user/{username}", method=RequestMethod.GET)
public String showUserDetails(#PathVariable String username, Model model){
model.addAttribute(userManager.getUser(username));
return "userDetails";
}
#RequestMapping(value = "/user/{username}", method = RequestMethod.GET,
produces={"application/xml", "application/json"})
#ResponseStatus(HttpStatus.OK)
public #ResponseBody
User getUser(#PathVariable String username) {
return userManager.getUser(username);
}
Here is my mvc context config:
<mvc:resources mapping="/resources/**"
location="/resources/"/>
<context:component-scan
base-package="com.chodak.controller" />
<bean class="org.springframework.web.servlet.view.ContentNegotiatingViewResolver">
<property name="defaultContentType" value="text/html" />
<property name="mediaTypes">
<map>
<entry key="json" value="application/json"/>
<entry key="xml" value="application/xml"/>
</map>
</property>
</bean>
<bean id="viewResolver"
class="org.springframework.web.servlet.view.UrlBasedViewResolver">
<property name="viewClass">
<value>
org.springframework.web.servlet.view.tiles3.TilesView
</value>
</property>
</bean>
<bean id="tilesConfigurer"
class="org.springframework.web.servlet.view.tiles3.TilesConfigurer">
<property name="definitions">
<list>
<value>/WEB-INF/tiles.xml</value>
</list>
</property>
</bean>
Actually when I tried the built in Eclipse browser it works fine, but when I use firefox or chrome it shows xml response on a request with no extension. I tried using ignoreAcceptHeader, but no change.
Also works on IE :/
If anyone has an idea please help, Thank you.
I actually found out how to do it, i dont really understand why but it is working now, I added default views to the contentresolver like :
<property name="defaultViews">
<list>
<!-- JSON View -->
<bean
class="org.springframework.web.servlet.view.json.MappingJacksonJsonView">
</bean>
<!-- JAXB XML View -->
<bean class="org.springframework.web.servlet.view.xml.MarshallingView">
<constructor-arg>
<bean class="org.springframework.oxm.jaxb.Jaxb2Marshaller">
<property name="classesToBeBound">
<list>
<value>com.chodak.tx.model.User</value>
</list>
</property>
</bean>
</constructor-arg>
</bean>
</list>
</property>
and removed the getUser method, the one annoted to produce xml and json. If I leave it with the added default views its still not working. If anyone can explain why it would be awesome :)
You can do
import org.springframework.http.MediaType;
import org.springframework.web.servlet.config.annotation.ContentNegotiationConfigurer;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
#Configuration
// #EnableWebMvc already autoconfigured by Spring Boot
public class MvcConfiguration {
#Bean
public WebMvcConfigurer contentNegotiationConfigurer() {
return new WebMvcConfigurerAdapter() {
#Override
public void configureContentNegotiation(ContentNegotiationConfigurer configurer) {
configurer.favorPathExtension(false)
.favorParameter(true)
.parameterName("mediaType")
.ignoreAcceptHeader(true)
.useJaf(false)
.defaultContentType(MediaType.APPLICATION_JSON)
.mediaType("xml", MediaType.APPLICATION_XML)
.mediaType("json", MediaType.APPLICATION_JSON);
// this line alone gave me xhtml for some reason
// configurer.defaultContentType(MediaType.APPLICATION_JSON_UTF8);
}
};
}
(tried with Spring Boot 1.5.x)
see https://spring.io/blog/2013/05/11/content-negotiation-using-spring-mvc
"What we did, in both cases:
Disabled path extension. Note that favor does not mean use one approach in preference to another, it just enables or disables it. The order of checking is always path extension, parameter, Accept header.
Enable the use of the URL parameter but instead of using the default parameter, format, we will use mediaType instead.
Ignore the Accept header completely. This is often the best approach if most of your clients are actually web-browsers (typically making REST calls via AJAX).
Don't use the JAF, instead specify the media type mappings manually - we only wish to support JSON and XML."
Let's say, I have a REST styled controller mapping
#RequestMapping(value="users", produces = {MediaType.APPLICATION_JSON_VALUE})
public List<User> listUsers(#ReqestParams Integer offset, #ReqestParams Integer limit, #ReqestParams String query) {
return service.loadUsers(query, offset, limit);
}
Serving JSON (or even XML) is not an issue, this is easy using ContentNegotation and MessageConverters
<bean id="contentNegotiationManager" class="org.springframework.web.accept.ContentNegotiationManagerFactoryBean">
<property name="favorPathExtension" value="true" />
<property name="favorParameter" value="false" />
<property name="ignoreAcceptHeader" value="false" />
<property name="mediaTypes" >
<value>
html=text/html
json=application/json
xml=application/xml
</value>
</property>
</bean>
Now, I need to add support for PDF. Naturally, I want to use (Spring) MVC + REST as much as possible. Most examples I have found implement this with an explicit definition not using REST style, e.g.
#RequestMapping(value="users", produces = {"application/pdf"})
public ModelAndView listUsersAsPdf(#ReqestParams Integer offset, #ReqestParams Integer limit, #ReqestParams String query) {
List<User> users = listUsers(offset, limit, query); // delegated
return new ModelAndView("pdfView", users);
}
That works, but is not very comfortable because for every alternate output (PDF, Excel, ...) I would add a request mapping.
I have already added application/pdf to the content negotation resolver; unfortunately any request with a suffix .pdf or the Accept-Header application/pdf were be responded with 406.
What is the ideal setup for a REST/MVC style pattern to integrate alternate output like PDF?
You can create a WEB-INF/spring/pdf-beans.xml like below.
<bean id="listofusers" class="YourPDFBasedView"/>
And your controller method will return view name as listofusers.
#RequestMapping(value="users")
public ModelAndView listUsersAsPdf(#ReqestParams Integer offset, #ReqestParams Integer limit, #ReqestParams String query) {
List<User> users = listUsers(offset, limit, query); // delegated
return new ModelAndView("listofusers", users);
}
And you can use contentNegotiationViewResolver in this way:
<bean class="org.springframework.web.servlet.view.XmlViewResolver">
<property name="order" value="1"/>
<property name="location" value="WEB-INF/spring/pdf-views.xml"/>
</bean>
<!--
View resolver that delegates to other view resolvers based on the content type
-->
<bean class="org.springframework.web.servlet.view.ContentNegotiatingViewResolver">
<!-- All configuration is now done by the manager - since Spring V3.2 -->
<property name="contentNegotiationManager" ref="cnManager"/>
</bean>
<!--
Setup a simple strategy:
1. Only path extension is taken into account, Accept headers are ignored.
2. Return HTML by default when not sure.
-->
<bean id="cnManager" class="org.springframework.web.accept.ContentNegotiationManagerFactoryBean">
<property name="ignoreAcceptHeader" value="true"/>
<property name="defaultContentType" value="text/html" />
</bean>
For JSON: Create a generic JSON view resolver like below and register it as bean in context file.
public class JsonViewResolver implements ViewResolver {
/**
* Get the view to use.
*
* #return Always returns an instance of {#link MappingJacksonJsonView}.
*/
#Override
public View resolveViewName(String viewName, Locale locale) throws Exception {
MappingJacksonJsonView view = new MappingJacksonJsonView();
view.setPrettyPrint(true); // Lay the JSON out to be nicely readable
return view;
}
}
Same for XML:
public class MarshallingXmlViewResolver implements ViewResolver {
private Marshaller marshaller;
#Autowired
public MarshallingXmlViewResolver(Marshaller marshaller) {
this.marshaller = marshaller;
}
/**
* Get the view to use.
*
* #return Always returns an instance of {#link MappingJacksonJsonView}.
*/
#Override
public View resolveViewName(String viewName, Locale locale)
throws Exception {
MarshallingView view = new MarshallingView();
view.setMarshaller(marshaller);
return view;
}
}
and register above xml view resolver in context file like this:
<oxm:jaxb2-marshaller id="marshaller" >
<oxm:class-to-be-bound name="some.package.Account"/>
<oxm:class-to-be-bound name="some.package.Customer"/>
<oxm:class-to-be-bound name="some.package.Transaction"/>
</oxm:jaxb2-marshaller>
<!-- View resolver that returns an XML Marshalling view. -->
<bean class="some.package.MarshallingXmlViewResolver" >
<constructor-arg ref="marshaller"/>
</bean>
You can find more information at this link:
http://spring.io/blog/2013/06/03/content-negotiation-using-views/
Using all view resolver techniques, you can avoid writing duplicate methods in controller, such as one for xml/json, other for excel, other for pdf, another for doc, rss and all.
Knalli, if you replace #ResponseBody with ModelAndView(), you can achieve both the features.
Is there any reason you want to keep #ResponseBody ? I just want to know if I am missing anything, just want to learn.
Other option is to write HttpMessageConverters then:
Some samples are here.
Custom HttpMessageConverter with #ResponseBody to do Json things
http://www.javacodegeeks.com/2013/07/spring-mvc-requestbody-and-responsebody-demystified.html
This is working sample. I have configured contentnegotiationviewresolver for this, and give highest order. After that I have ResourceBundleViewResolver for JSTL and Tiles View, then XmlViewResolver for excelResolver, pdfResolver, rtfResolver. excelResolver, pdfResolver, rtfResolver. XmlViewResolver and ResourceBundleViewResolver works only with MAV only, but MappingJacksonJsonView and MarshallingView takes care for both MAV and #ResponseBody return value.
<bean id="contentNegotiatingResolver" class="org.springframework.web.servlet.view.ContentNegotiatingViewResolver">
<property name="order"
value="#{T(org.springframework.core.Ordered).HIGHEST_PRECEDENCE}" />
<property name="mediaTypes">
<map>
<entry key="json" value="application/json" />
<entry key="xml" value="application/xml" />
<entry key="pdf" value="application/pdf" />
<entry key="xlsx" value="application/vnd.openxmlformats-officedocument.spreadsheetml.sheet" />
<entry key="doc" value="application/msword" />
</map>
</property>
<property name="defaultViews">
<list>
<!-- JSON View -->
<bean class="org.springframework.web.servlet.view.json.MappingJacksonJsonView" />
<!-- XML View -->
<bean class="org.springframework.web.servlet.view.xml.MarshallingView">
<constructor-arg>
<bean id="jaxbMarshaller" class="org.springframework.oxm.jaxb.Jaxb2Marshaller">
<property name="classesToBeBound">
<list>
<value>Employee</value>
<value>EmployeeList</value>
</list>
</property>
</bean>
</constructor-arg>
</bean>
</list>
</property>
<property name="ignoreAcceptHeader" value="true" />
</bean>
<bean class="org.springframework.web.servlet.view.ResourceBundleViewResolver"
id="resourceBundleResolver">
<property name="order" value="#{contentNegotiatingResolver.order+1}" />
</bean>
<bean id="excelResolver" class="org.springframework.web.servlet.view.XmlViewResolver">
<property name="location">
<value>/WEB-INF/tiles/spring-excel-views.xml</value>
</property>
<property name="order" value="#{resourceBundleResolver.order+1}" />
</bean>
<bean id="pdfResolver" class="org.springframework.web.servlet.view.XmlViewResolver">
<property name="location">
<value>/WEB-INF/tiles/spring-pdf-views.xml</value>
</property>
<property name="order" value="#{excelResolver.order+1}" />
</bean>
<bean id="rtfResolver" class="org.springframework.web.servlet.view.XmlViewResolver">
<property name="location">
<value>/WEB-INF/tiles/spring-rtf-views.xml</value>
</property>
<property name="order" value="#{excelResolver.order+1}" />
</bean>
And our XMLViewResolver spring-pdf-views.xml looks like this.
<bean id="employees"
class="EmployeePDFView"/>
And EmployeePDFView will have code for generating pdf and writing pdf byte stream on Response object. This will resolve to rest url that will end with .pdf extension, and when you return MAV with "employees" id.
I am trying to inject the aspects in a service. For this service I am creating a proxied object using classic way.
I have written a bean- baseProxy of type (ProxyFactoryBean) which contains a list of all the required advices.
<bean id="baseProxy" class="org.springframework.aop.framework.ProxyFactoryBean">
<property name="interceptorNames">
<list>
<value>methodInvocationAdvice</value>
</list>
</property>
</bean>
I am creating a proxy for the service like this :
<bean id="singproxy" parent="baseProxy">
<property name="target" ref="singtarget" />
<property name="targetClass" value="com.spring.learning.SingingService"></property>
</bean>
Which doesn't work but when I revert these two properties and write like this :
<bean id="singproxy" parent="baseProxy">
<property name="targetClass" value="com.spring.learning.SingingService"></property>
<property name="target" ref="singtarget" />
</bean>
To my surprise it works fine. In spring does it matter on the order for bean ? Or its a special case with ProxyFactoryBean?
I tried with Spring 3.0 I am not sure same behavior exists with previous versions.
Concerning target and targetClass, It's one or the other, but not both. Here's the relevant source (from org.springframework.aop.framework.AdvisedSupport), a parent class of ProxyFactoryBean:
public void setTarget(Object target) {
setTargetSource(new SingletonTargetSource(target));
}
public void setTargetSource(TargetSource targetSource) {
this.targetSource = (targetSource != null ? targetSource : EMPTY_TARGET_SOURCE);
}
public void setTargetClass(Class targetClass) {
this.targetSource = EmptyTargetSource.forClass(targetClass);
}
As you can see, both setTarget() and setTargetClass() write to the same field, so the last assignment wins.