#Valid is not triggering - Spring MVC 3.2

#Valid is not triggering - Spring MVC 3.2 - java

For some reason, its not working. I searched and tried all the solutions found on the net. No dice. Looks like I am missing something.
My Beam:
#Entity
#Table(name="employees")
public class Person {
private Integer person_id;
private String name;
private String name2;
private String email;
private double phone;
private String desc;
#Id
#Max(value=500)
#Column (name="id")
public Integer getPerson_id() {
return person_id;
}
public void setPerson_id(Integer person_id) {
this.person_id = person_id;
}
#NotNull
#NotEmpty
#Column (name="fn")
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
#Column(name="ln")
public String getName2() {
return name2;
}
public void setName2(String name2) {
this.name2 = name2;
}
#Email
#Column (name="em", unique = true)
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
#Column(name="phone")
public double getPhone() {
return phone;
}
public void setPhone(double phone) {
this.phone = phone;
}
#Column (name="de")
public String getDesc() {
return desc;
}
public void setDesc(String desc) {
this.desc = desc;
}
public String toString() {
return getPerson_id() + " - " + getName() + " - " + getName2() + " - " + getEmail();
}
}
Controller Method That handles POST:
#RequestMapping(value="/register", method = RequestMethod.POST, headers="Accept=*/*")
public String registerUer( #javax.validation.Valid Person registerForm, BindingResult br){
System.out.println( "Erros?" + br.hasErrors());
if ( br.hasErrors() ) {
System.out.println(br.getAllErrors());
}
System.out.println(registerForm);
return "thankyou";
}
home.jsp
<form:form action="register.htm" commandName="registerForm" method="post">
Name1: <form:input path="name"/><br />
Name2: <form:input path="name2"/><br />
Email: <form:input path="email"/><br />
Desc: <form:input path="desc" /><br />
Phone: <form:input path="phone" /><br />
<input type="submit" />
</form:form>
application context xml file:
<mvc:annotation-driven />
<context:component-scan base-package="com.springmvcsample"/>
<context:annotation-config/>
<import resource="hibernate_config.xml"/>
<bean id="viewResolver"
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix">
<value>/WEB-INF/views/</value>
</property>
<property name="suffix">
<value>.jsp</value>
</property>
</bean>
<bean id="contentNegotiationManager"
class="org.springframework.web.accept.ContentNegotiationManagerFactoryBean">
<!-- Turn off working out content type based on URL file extension, should fall back
to looking at the Accept headers -->
<property name="favorPathExtension" value="false" />
</bean>
<bean class="org.springframework.context.support.ResourceBundleMessageSource"
id="messageSource">
<property name="basename" value="messages" />
</bean>
I always get hasErrors() return false
I have hibernate validator (GA jar) file in my classspath. And I see this loaded:
INFO [Version] Hibernate Validator 4.2.0.Final
Am I missing something?

It works as expected if I remove JPA annotations (as I wanted to avoid further configuration for db) and use your form and controller code.
Definitely there is some missing piece, can you try by making a simple pojo with validation annotations and see.

Related

Can not send JSON using POST request and Jackson

This is my entity class:
#Entity
#Table(name = "menuitem")
public class MenuItem {
#Id
#GeneratedValue(strategy=GenerationType.IDENTITY )
#Column(name = "id")
private Integer id;
#Column(name = "title")
private String title;
#Column(name = "eng_title")
private String engTitle;
#Column(name = "price")
private double price;
#Column(name = "description")
private String description;
#Column(name = "consist_of")
private String consistOf;
#Column(name = "volume_value")
private double volumeValue;
#Column(name = "volume_title")
private String volumeTitle;
#ManyToOne
#JoinColumn(name = "category_id",insertable = false, updatable = false)
private Category category;
#Column(name = "category_id")
private int categoryId;
public MenuItem() {
}
public MenuItem(JSONObject jsonObject) {
if (!jsonObject.isNull("id")) {
this.id = jsonObject.getInt("id");
}
if (!jsonObject.isNull("title")) {
this.title = jsonObject.getString("title");
}
if (!jsonObject.isNull("engTitle")) {
this.engTitle = jsonObject.getString("engTitle");
}
if (!jsonObject.isNull("price")) {
this.price = jsonObject.getDouble("price");
}
if (!jsonObject.isNull("description")) {
this.description = jsonObject.getString("description");
}
if (!jsonObject.isNull("consistOf")) {
this.consistOf = jsonObject.getString("consistOf");
}
if (!jsonObject.isNull("volumeValue")) {
this.volumeValue = jsonObject.getDouble("volumeValue");
}
if (!jsonObject.isNull("volumeTitle")) {
this.volumeTitle = jsonObject.getString("volumeTitle");
}
}
public MenuItem(Integer id, String title, String engTitle, double price,
String description, String consistOf, double volumeValue,
String volumeTitle) {
super();
this.id = id;
this.title = title;
this.engTitle = engTitle;
this.price = price;
this.description = description;
this.consistOf = consistOf;
this.volumeValue = volumeValue;
this.volumeTitle = volumeTitle;
}
#Override
public String toString() {
return "MenuItem [id=" + id + ", title=" + title + ", engTitle="
+ engTitle + ", price=" + price + ", description="
+ description + ", consistOf=" + consistOf + ", volumeValue="
+ volumeValue + ", volumeTitle=" + volumeTitle + ", categoryId=" + categoryId + "]";
}
public String getEngTitle() {
return engTitle;
}
public void setEngTitle(String engTitle) {
this.engTitle = engTitle;
}
public void setId(Integer id) {
this.id = id;
}
public Integer getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public double getPrice() {
return price;
}
public void setPrice(double price) {
this.price = price;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
public String getConsistOf() {
return consistOf;
}
public void setConsistOf(String consistOf) {
this.consistOf = consistOf;
}
public double getVolumeValue() {
return volumeValue;
}
public void setVolumeValue(double volumeValue) {
this.volumeValue = volumeValue;
}
public String getVolumeTitle() {
return volumeTitle;
}
public void setVolumeTitle(String volumeTitle) {
this.volumeTitle = volumeTitle;
}
#JsonBackReference
#JsonIgnore
public Category getCategory() {
return category;
}
public void setCategory(Category category) {
this.category = category;
}
public void setCategoryId(int categoryId) {
this.categoryId = categoryId;
}
}
This is my root context:
<beans:bean
class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
<beans:property name="messageConverters">
<beans:array>
<beans:bean
class="org.springframework.http.converter.StringHttpMessageConverter">
<beans:property name="supportedMediaTypes" value="text/plain;charset=UTF-8" />
</beans:bean>
</beans:array>
</beans:property>
</beans:bean>
<!-- Resolves views selected for rendering by #Controllers to .jsp resources
in the /WEB-INF/views directory -->
<beans:bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<beans:property name="prefix" value="/WEB-INF/views/" />
<beans:property name="suffix" value=".jsp" />
</beans:bean>
<!-- Configure to plugin JSON as request and response in method handler -->
<beans:bean
class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter">
<beans:property name="messageConverters">
<beans:list>
<beans:ref bean="jsonMessageConverter" />
</beans:list>
</beans:property>
</beans:bean>
<!-- Configure bean to convert JSON to POJO and vice versa -->
<beans:bean id="jsonMessageConverter"
class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
</beans:bean>
<mvc:interceptors>
<beans:bean class="ru.tenet.cafe.interceptor.LoginInterceptor" />
</mvc:interceptors>
<context:component-scan base-package="ru.tenet.cafe" />
<mvc:annotation-driven />
<tx:annotation-driven transaction-manager="transactionManager" />
<beans:bean id="dataSourceMain" class="com.mchange.v2.c3p0.ComboPooledDataSource"
destroy-method="close">
<beans:property name="driverClass" value="org.postgresql.Driver" />
<beans:property name="jdbcUrl"
value="jdbc:postgresql://192.168.101.158:5432/cafe" />
<beans:property name="user" value="postgres" />
<beans:property name="password" value="123" />
<beans:property name="minPoolSize" value="5" />
<beans:property name="maxPoolSize" value="8" />
<beans:property name="preferredTestQuery" value="SELECT 1" />
<beans:property name="acquireIncrement" value="1" />
<beans:property name="idleConnectionTestPeriod" value="100" />
<beans:property name="maxStatements" value="0" />
<beans:property name="checkoutTimeout" value="60000" />
</beans:bean>
<beans:bean id="sessionFactory"
class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<beans:property name="dataSource" ref="dataSourceMain" />
<beans:property name="configLocation">
<beans:value>/WEB-INF/db/hibernate.cfg.xml</beans:value>
</beans:property>
<beans:property name="hibernateProperties">
<beans:props>
<beans:prop key="hibernate.connection.characterEncoding">UTF-8</beans:prop>
<beans:prop key="hibernate.connection.charSet">UTF-8</beans:prop>
<beans:prop key="hibernate.connection.useUnicode">true</beans:prop>
<beans:prop key="hibernate.show_sql">false</beans:prop>
</beans:props>
</beans:property>
</beans:bean>
<beans:bean id="transactionManager"
class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<beans:property name="sessionFactory" ref="sessionFactory" />
</beans:bean>
This is my controller:
#RequestMapping(value = "", method = RequestMethod.POST)
public ResponseEntity<String> create(
#RequestBody MenuItem menuItem) {
menuService.create(menuItem);
return new ResponseEntity<String>(HttpStatus.OK);
}
But if I send POST request with the following body
{
"title":"Пепперони",
"engTitle":"Pepperoni",
"price":300,
"description":"Сами лючщи пица слющи. Тольки щто привезли дарагой.",
"consistOf":"E666, стальная стружка, вода (без ГМО)",
"volumeValue":500,
"volumeTitle":"г",
"categoryId":38
}
I will get:
415 The server refused this request because the request entity is in a
format not supported by the requested resource for the requested
method.
What the hell?

let's start with a little definition :
415 Unsupported Media Type
The request entity has a media type which
the server or resource does not support. For example, the client
uploads an image as image/svg+xml, but the server requires that images
use a different format.
Which can be solved by :
#RequestMapping(value = "", method = RequestMethod.POST, produces = "application/json; charset=UTF-8", consumes = "application/json; charset=UTF-8")
Explanation : Basically you need to specify what kind of data your endpoint is going to consume / produce. Don't forget when sending the request to specify the header
Content-Type: application/json

Your current controller must be replaced with the following code:
#RequestMapping(value = "", method = RequestMethod.POST)
public ResponseEntity<String> create() {
MenuItem menuItem = null;
menuService.create(menuItem); // Fill in the menuItem
// Now respond
HttpHeaders responseHeaders = new HttpHeaders();
responseHeaders.setContentType(MediaType.APPLICATION_JSON);
return new ResponseEntity<String>(menuItem, responseHeaders, HttpStatus.OK);
}

Could not resolve matching constructor.Ambiguity issue with Spring dependency injection

I am getting the error "Could not resolve matching constructor (hint: specify index/type/name arguments for simple parameters to avoid type ambiguities)" while executing my spring program. I am new to Spring core and trying to learn the framework. Below is the code:
Student.java
package com.inject.test;
public class Student {
private String name;
private String className;
private Address address;
public Address getAddress() {
return address;
}
public void setAddress(Address address) {
this.address = address;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getClassName() {
return className;
}
public void setClassName(String className) {
this.className = className;
}
}
Address.java
package com.inject.test;
public class Address {
private String city;
private String state;
public String getCity() {
return city;
}
public void setCity(String city) {
this.city = city;
}
public String getState() {
return state;
}
public void setState(String state) {
this.state = state;
}
}
Test.java
package com.inject.test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class Test {
public static void main(String[] args) {
#SuppressWarnings("resource")
ApplicationContext context = new ClassPathXmlApplicationContext("file:com/applicationContext.xml");
Student student = (Student) context.getBean("student");
System.out.println("Name: " + student.getName());
System.out.println("Class: " + student.getClassName());
Address studentAddress = student.getAddress();
System.out.println("Student Address: ");
System.out.println("City: " + studentAddress.getCity());
System.out.println("State: " + studentAddress.getState());
}
}
applicationContext.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">
<bean id="student" class="com.inject.test.Student">
<property name="name" value="Jai"/>
<property name="className" value="MCA"/>
<constructor-arg ref="address" type="java.lang.String"/>
</bean>
<bean id="address" class="com.inject.test.Address">
<property name="city" value="Hyderabad"/>
<property name="state" value="Telangana"/>
</bean>
</beans>
What change should be made to resolve the constructor issue, please suggest.

Your xml configuration specifies a constructor argument containing the address, but your Student class does not have a constructor that takes any arguments.
Either add the appropriate constructor, or change the constructor-arg to a property in the xml configuration.

1)you have not added constructor in your class,so replace your applicationContext.xml file
<bean id="student" class="com.inject.test.Student">
<property name="name" value="jai"></property>
<property name="className" value="MCA"></property>
//instead of writing <constructor-arg>property write as follow
<property name="address" ref="addressOne"></property>
</bean>
<bean id="addressOne" class="com.inject.test.Address">
<property name="city" value="Hyderabad"/>
<property name="state" value="Telangana"/>
</bean>
or 2) just add
public Student(Address address) {
this.address = address;
}
in student class
and replace this line
<constructor-arg ref="address" type="java.lang.String"/>
with this
<constructor-arg ref="address"/>

Not able to write to the cassandra table using spring batch

I am writing a spring batch process to read the data from the cassandra table and modify it and write the data back to the cassandra table. I am using the same class to read and write the data back to the table. My job is written in an xml file and I am running that xml file itself.I am getting the following error:
The error is shown when I am trying to write the ArrayList back to the table
org.springframework.data.cassandra.mapping.VerifierMappingExceptions:
java.util.ArrayList: Cassandra entities must have the #Table,
#Persistent or #PrimaryKeyClass Annotation
It also shows
at org.springframework.data.cassandra.mapping.BasicCassandraPersistentEntityMetadataVerifier.verify(BasicCassandraPersistentEntityMetadataVerifier.java:45)
at org.springframework.data.cassandra.mapping.BasicCassandraPersistentEntity.verify(BasicCassandraPersistentEntity.java:198)
xml:
<job id="LoadStatusIndicator" job-repository="jobRepository" restartable="false">
<step id="LoadStatus" next="">
<tasklet>
<chunk reader="StatusReader" processor="ItemProcessor" writer="ItemWriter"
commit-interval="1" />
</tasklet>
</step>
</job>
<beans:bean id="ItemWriter" scope="step"
class="com.batch.writer.ItemWriter">
</beans:bean>
<beans:bean id="ItemProcessor" scope="step"
class="com.batch.processor.ItemProcessor">
</beans:bean>
<beans:bean id="Reader" scope="step"
class="com.reader.ItemReader">
<beans:property name="dataSource" ref="CassandraSource" />
</beans:bean>
applicationcontext.xml:
<beans:bean id="CassandraSource" parent="DataSourceParent">
<beans:property name="url" value="jdbc:cassandra://${cassandra.hostName}:${cassandra.port}/${cassandra.keyspace}" />
<beans:property name="driverClassName" value="org.apache.cassandra.cql.jdbc.CassandraDriver" />
</beans:bean>
reader class:
#Override
public List<Item> read() throws Exception, UnexpectedInputException, ParseException, NonTransientResourceException
{
List<Item> results = new ArrayList<Item>();
try {
results = cassandraTemplate.select(query,Item.class);
} catch (Exception e) {
e.printStackTrace();
}
return results;
}
writer classs:
#Override
public void write(List<? extends Item> item) throws Exception {
try {
cassandraTemplate.update(item);
}catch(Exception e){e.printStackTrace();}
Item class:
#Entity
//#Persistent
//#Transactional
#Table(value ="test")
//#IdClass(ItemPK.class)
//Serializable{
public class Item implements Serializable{
#Id
#PrimaryKeyColumn(name = "id", ordinal = 0, type = PrimaryKeyType.PARTITIONED)
private Integer id;
#PrimaryKeyColumn(name = "name", ordinal = 0, type = PrimaryKeyType.PARTITIONED)
private String name;
#Column(value = "address")
private Float address;
public Item(){}
public Item(Integer id, String name, Float address) {
super();
this.id = id;
this.name = name;
this.address = address;
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Float getAddress() {
return address;
}
public void setAddress(Float address) {
this.address = address;
}

hibernate entity to json

i use Hibernate 4 and Spring 3.
i have two entity.
Book entity
#Entity
#Table(name = "book")
public class Book implements Serializable {
public Book() {
}
private static final long serialVersionUID = 1L;
#Id
#GeneratedValue( strategy = GenerationType.IDENTITY)
private int id;
#ManyToOne()
#JoinColumn( name = "author_id" )
private Author author;
private String name;
private int pages;
#Version
#Column( name = "VERSION")
private int version;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public Author getAuthor() {
return author;
}
public void setAuthor(Author author) {
this.author = author;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getPages() {
return pages;
}
public void setPages(int pages) {
this.pages = pages;
}
public int getVersion() {
return version;
}
public void setVersion(int version) {
this.version = version;
}
}
and Author entity
#Entity
#Table(name = "author")
public class Author implements Serializable {
public Author() {
}
private static final long serialVersionUID = 1L;
#Id
#GeneratedValue( strategy = GenerationType.IDENTITY)
private int id;
private String name;
#OneToMany( mappedBy = "author", cascade = CascadeType.ALL, orphanRemoval = true)
private Set<Book> books = new HashSet<Book>();
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Set<Book> getBooks() {
return books;
}
public void setBooks(Set<Book> books) {
this.books = books;
}
public void addBook(Book book) {
book.setAuthor(this);
getBooks().add(book);
}
public void removeBook(Book book) {
getBooks().remove(book);
}
}
and JSON depend in pom.xml
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>2.1.2</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.datatype</groupId>
<artifactId>jackson-datatype-hibernate4</artifactId>
<version>2.1.2</version>
</dependency>
My Root-context is here -
<!-- Root Context: defines shared resources visible to all other web components -->
<context:annotation-config/>
<context:component-scan base-package="org.jar.libs.dao" />
<context:component-scan base-package="org.jar.libs.service" />
<tx:annotation-driven transaction-manager="transactionManager" />
<bean id="jspViewResolver"
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
<property name="prefix" value="/WEB-INF/views/"/>
<property name="suffix" value=".jsp"/>
</bean>
<bean id="dataSource"
class="org.springframework.jdbc.datasource.DriverManagerDataSource"
p:driverClassName="com.mysql.jdbc.Driver" p:url="jdbc:mysql://localhost:3306/hibernate"
p:username="root" p:password="root" />
<bean id="sessionFactory"
class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="annotatedClasses">
<list>
<value>org.jar.libs.domain.Book</value>
<value>org.jar.libs.domain.Author</value>
</list>
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
<prop key="hibernate.show_sql">true</prop>
<prop key="hibernate.hbm2ddl.auto">update</prop>
</props>
</property>
</bean>
<bean id="transactionManager"
class="org.springframework.orm.hibernate4.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory" />
</bean>
</beans>
...servlet-context.xml
<!-- Enables the Spring MVC #Controller programming model -->
<annotation-driven />
<!-- Handles HTTP GET requests for /resources/** by efficiently serving up static resources in the ${webappRoot}/resources directory -->
<resources mapping="/resources/**" location="/resources/" />
<!-- Resolves views selected for rendering by #Controllers to .jsp resources in the /WEB-INF/views directory -->
<beans:bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<beans:property name="prefix" value="/WEB-INF/views/" />
<beans:property name="suffix" value=".jsp" />
</beans:bean>
<context:component-scan base-package="org.jar.libs.controller" />
Controller.
#Controller
#RequestMapping (value = "books/rest")
public class BookController {
#Autowired
private BookService bookService;
// logger
private static final Logger logger = LoggerFactory.getLogger(BookController.class);
#SuppressWarnings("unchecked")
#RequestMapping( method = RequestMethod.GET )
public #ResponseBody List<Book> getBook() {
List<Book> res = bookService.findAll();
return res;
}
}
findAll in my DAO :
public List<Book> findAll() {
Session session = sessionFactory.getCurrentSession();
List<Book> result = (List<Book>) session.createQuery("select c from Book c").list();
return result;
}
in debug i see that method return 2 records, but Spring can not convert result to JSON and return 406 HTTP error. What's wrong?
I attach image what i see in debug. - http://tinypic.com/view.php?pic=35kvi9i&s=6

Generally, when you call getter methods of entity classes(which returns relation object) out of transaction, then you get LazyInitializationExceptions.
That's what might be happening in your case if you are converting entity class objects(retrieved from query) to json out of transaction.
I had same issue, I converted my entity object retrieved by hibernate to json in controller. As controller was out of transaction(Transaction at service layer), while converting to json, getter methods of entity class objects are called and I got LazyInitializationException. Which obstructed object conversion to json, and response was not returned.
My solution, Try this :
#SuppressWarnings("unchecked")
#RequestMapping( method = RequestMethod.GET )
public #ResponseBody List<Book> getBook() {
List<Book> res = bookService.findAll();
for(Book book : res) {
book.getAuthor().setBooks(null);
}
return res;
}

As others have suggested,
I would really not advise you to try to JSON serialize (or actually perform any serialization) of hibernate entities.
You must remember that the fetched entities are actually "proxified" objects (Hibernate uses ASM, CGLIB and other "dynamic proxiy" frameworks).
As a result for example, collections get replaced with [PersistenceBags] which may be initialized "lazily" , and cause you hibernate exceptions 1.
But the problems do not stop there, you may see issues when trying to serialize an Hibernate custom type
I know this might sound you like writing "boillerplate" code but you might end up coding DTOs - data transfer objects which will take the entity returned from your DAL, and transform them to an object that can be serialized.
You can use a framework like dozer in order to ease development of serialization between an entity to a DTO.

Try using these two Jackson artifacts instead
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-mapper-asl</artifactId>
<version>1.9.9</version>
</dependency>
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-core-asl</artifactId>
<version>1.9.9</version>
</dependency>
Also on your controller try by changing it to -
#SuppressWarnings("unchecked")
#RequestMapping( method = RequestMethod.GET, produces = MediaType.APPLICATION_JSON_VALUE )
public #ResponseBody List<Book> getBook() {
Lastly, make sure your view is making a json request.

XML binding with the use of JAXB and Spring-MVC

the following xml is in a repository on a server:
<author xmlns="http://www..." xmlns:atom="http://www.w3.org/2005/atom">
<name>S. Crocker</name>
<address>None</address>
<affiliation></affiliation>
<email>None</email>
</author>
My model class:
#XmlRootElement(name = "author", namespace="http://www...")
#XmlAccessorType(XmlAccessType.FIELD)
public class Author {
#XmlAttribute(name="author")
private String author;
#XmlElement(name="name")
private String name;
#XmlElement(name="address")
private String address;
#XmlElement(name="affiliation")
private String affiliation;
#XmlElement(name="email")
private String email;
public String getAuthor() {
return author;
}
public void setAuthor(String author) {
this.author = author;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
public String getAffiliation() {
return affiliation;
}
public void setAffiliation(String affiliation) {
this.affiliation = affiliation;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
}
According to a tutorial i saw i should use the #XmlSchema to a package-info.java
I create a class package-info.java but i don't know how to treat this.
Actually my problem is that i don't know how to use the corect annotations to bind the xml with the model class. The whole story is that i'm trying to retrieve an XML document from a repository, but i take null values. The problem as i saw here: JAXB: How to bind element with namespace
is that i don't use the correct annotations. Does anyone knows which are the correct annotations and how should i use them?

Below is an example of how you could map this use case:
package-info
I would use the package level #XmlSchema annotation to specify the namespace qualification. Specify the namespace to be your target namespace ("http://www.../ckp"). You want this namespace applied to all XML elements so specify elementFormDefault=XmlNsForm.QUALIFIED. The use xmlns to asssociate prefixes with your namespace URIs.
#XmlSchema(
namespace="http://www.../ckp",
elementFormDefault=XmlNsForm.QUALIFIED,
xmlns={
#XmlNs(prefix="", namespaceURI="http://www.../ckp"),
#XmlNs(prefix="atom", namespaceURI="http://www.w3.org/2005/atom"),
}
)
package forum10388261;
import javax.xml.bind.annotation.*;
Author
Below is what your Author class would look like. I have removed the unnecessary annotations (annotations that were equivalent to the default mapping).
package forum10388261;
import javax.xml.bind.annotation.*;
#XmlRootElement
#XmlAccessorType(XmlAccessType.FIELD)
public class Author {
#XmlAttribute
private String author;
private String name;
private String address;
private String affiliation;
private String email;
public String getAuthor() {
return author;
}
public void setAuthor(String author) {
this.author = author;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
public String getAffiliation() {
return affiliation;
}
public void setAffiliation(String affiliation) {
this.affiliation = affiliation;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
}
Demo
package forum10388261;
import java.io.File;
import javax.xml.bind.*;
public class Demo {
public static void main(String[] args) throws Exception {
JAXBContext jc = JAXBContext.newInstance(Author.class);
Unmarshaller unmarshaller = jc.createUnmarshaller();
File xml = new File("src/forum10388261/input.xml");
Author author = (Author) unmarshaller.unmarshal(xml);
Marshaller marshaller = jc.createMarshaller();
marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
marshaller.marshal(author, System.out);
}
}
Output
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<author xmlns:atom="http://www.w3.org/2005/atom" xmlns="http://www.../ckp">
<name>S. Crocker</name>
<address>None</address>
<affiliation></affiliation>
<email>None</email>
</author>
For More Information
http://blog.bdoughan.com/2010/08/jaxb-namespaces.html
http://blog.bdoughan.com/2011/11/jaxb-and-namespace-prefixes.html

I've never needed to use the namespace parameter on #XmlRootElement, try leaving that off; also, you have #XmlAttribute specified for author, but there's no author in your example besides the tag name.
As for:
Actually my problem is that i don't know how to use the corect
annotations to bind the xml with the model class.
In your spring config you can do:
<oxm:jaxb2-marshaller id="jaxb2Marshaller">
<oxm:class-to-be-bound name="com.mycompany.Author"/>
<!-- ... -->
</oxm:jaxb2-marshaller>
Then inject the jaxb2Marshaller directly or use a MessageConverter like so:
<bean id="xmlConverter" class="org.springframework.http.converter.xml.MarshallingHttpMessageConverter">
<constructor-arg>
<ref bean="jaxb2Marshaller"/>
</constructor-arg>
<property name="supportedMediaTypes">
<list>
<bean class="org.springframework.http.MediaType">
<constructor-arg index="0" value="application"/>
<constructor-arg index="1" value="xml"/>
<constructor-arg index="2" value="UTF-8"/>
</bean>
</list>
</property>
</bean>
If you want to use spring's content negotiation, you could then use AnnotationMethodHandlerAdapter with the message converter:
<bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
<property name="messageConverters">
<list>
<ref bean="xmlConverter"/>
<!-- other converters if you have them, e.g. for JSON -->
</list>
</property>
</bean>

Develop Reference

Java is a programming language and computing platform first released by Sun Microsystems in 1995.

#Valid is not triggering - Spring MVC 3.2 - java

It works as expected if I remove JPA annotations (as I wanted to avoid further configuration for db) and use your form and controller code. Definitely there is some missing piece, can you try by making a simple pojo with validation annotations and see.

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