So I know there are dozens of posts similar to this, but unfortunately none of those have helped me. I am simply trying to get a demo Spring MVC project up and running. I am trying to run a template project provided by Heroku (https://devcenter.heroku.com/articles/getting-started-with-heroku-eclipse). I have tried many combinations of settings to no avail. Here are the default settings:
web.xml:
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
id="WebApp_ID" version="2.5">
<display-name>Spring-Hibernate-Template</display-name>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<servlet>
<servlet-name>spring</servlet-name>
<servlet-class>
org.springframework.web.servlet.DispatcherServlet
</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>spring</servlet-name>
<url-pattern>/people/*</url-pattern>
</servlet-mapping>
</web-app>
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"
xmlns:jdbc="http://www.springframework.org/schema/jdbc"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">
<context:annotation-config />
<context:component-scan base-package="com.example" />
<mvc:annotation-driven/>
<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/jsp/" />
<property name="suffix" value=".jsp" />
</bean>
<tx:annotation-driven />
<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory" />
<property name="dataSource" ref="dataSource"/>
</bean>
<beans profile="default">
<jdbc:embedded-database id="dataSource"/>
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="dataSource"/>
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter"/>
</property>
<property name="jpaProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.HSQLDialect</prop>
<prop key="hibernate.hbm2ddl.auto">create</prop>
</props>
</property>
</bean>
</beans>
<beans profile="prod">
<bean class="java.net.URI" id="dbUrl">
<constructor-arg value="#{systemEnvironment['DATABASE_URL']}"/>
</bean>
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
<property name="url" value="#{ 'jdbc:postgresql://' + #dbUrl.getHost() + ':' + #dbUrl.getPort() + #dbUrl.getPath() }"/>
<property name="username" value="#{ #dbUrl.getUserInfo().split(':')[0] }"/>
<property name="password" value="#{ #dbUrl.getUserInfo().split(':')[1] }"/>
</bean>
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="dataSource"/>
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter"/>
</property>
<property name="jpaProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.PostgreSQLDialect</prop>
<prop key="hibernate.show_sql">true</prop>
<!-- change this to 'verify' before running as a production app -->
<prop key="hibernate.hbm2ddl.auto">update</prop>
</props>
</property>
</bean>
</beans>
</beans>
PersonController.java:
#Controller
public class PersonController {
#Autowired
private PersonService personService;
#RequestMapping("/")
public String listPeople(Map<String, Object> map) {
map.put("person", new Person());
map.put("peopleList", personService.listPeople());
return "people";
}
#RequestMapping(value = "/add", method = RequestMethod.POST)
public String addPerson(#ModelAttribute("person") Person person, BindingResult result) {
personService.addPerson(person);
return "redirect:/people/";
}
#RequestMapping("/delete/{personId}")
public String deletePerson(#PathVariable("personId") Integer personId) {
personService.removePerson(personId);
return "redirect:/people/";
}
}
And I have a 'people.jsp' file at webapp/WEB-INF/jsp/people/jsp
My server.xml context element for the Tomcat server looks like:
<Context docBase="facultypublicationsdb" path="/facultypublicationsdb" reloadable="true" source="org.eclipse.jst.jee.server:facultypublicationsdb"/></Host>
Every time I run this on Tomcat at (http://localhost:8080/facultypublicationsdb/), I get the following:
HTTP Status 404 - /facultypublicationsdb/
type Status report
message /facultypublicationsdb/
description The requested resource (/facultypublicationsdb/) is not available.
Apache Tomcat/7.0.21
I am running this on Ubuntu through eclipse. I notice that no .war is being copied over to the /usr/share/tomcat7/webapps directory. Is that supposed to occur?
Any ideas?
Try checking two things.
First change your web.xml file to map the dispatcher servlet to /. This causes the dispatcher servlet to be used when no other mappings are found for a request, instead of for every request. This is important if you have resources such as CSS and Javascript.
<servlet-mapping>
<servlet-name>spring</servlet-name>
<url-pattern>/people/*</url-pattern>
</servlet-mapping>
Next, if using Eclipse, open your projects properties (Click project in project, explorer Alt+Enter). Then go to deployment assembly. Make sure that all of your projects resources are included here, especially any maven dependencies. If you notice that dependencies are missing click the add button and select them.
You may also want to ensure that your controllers are being picked up by component scanning. Ensure that your controllers are in the com.example package.
I would think you need to specify method = RequestMethod.GET in listPeople method. There could be many small things that could cause 404 error. Could you upload this code on GitHub and I will look into it.
Related
I am new to spring. And I have encounter an error on my spring application. It says :
GRAVE: Servlet [dispatcher] in web application [/web-customer-function] threw load() exception
java.lang.ClassNotFoundException: org.springframework.web.servlet.DispatcherServlet
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1309)
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1137)
at org.apache.catalina.core.DefaultInstanceManager.loadClass(DefaultInstanceManager.java:546)
I have beean dealing with this for a long time now... It has been 5 days. And this is what I have done...
Deployment Asssembly > Add lib folder to path
Stop,clean or/and delete server
Rewrite entire code
Download the org.springframework.web.servlet.DispatcherServlet and try to run again.
I would appreciate the help to all if possible.
This is my Web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">
<display-name>spring-mvc-crud-demo</display-name>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
<welcome-file>index.html</welcome-file>
</welcome-file-list>
<servlet>
<servlet-name>dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/spring-mvc-crud-demo-servlet.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>dispatcher</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
And this part is my spring-crud.xml which are beans and configurations...
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd">
<!-- Add support for component scanning -->
<context:component-scan base-package="com.luv2code.springdemo" />
<!-- Add support for conversion, formatting and validation support -->
<mvc:annotation-driven/>
<!-- Define Spring MVC view resolver -->
<bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/view/" />
<property name="suffix" value=".jsp" />
</bean>
<!-- Step 1: Define Database DataSource / connection pool -->
<bean id="myDataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"
destroy-method="close">
<property name="driverClass" value="com.mysql.jdbc.Driver" />
<property name="jdbcUrl" value="jdbc:mysql://localhost:3306/web_customer_tracker?useSSL=false" />
<property name="user" value="springstudent" />
<property name="password" value="springstudent" />
<!-- these are connection pool properties for C3P0 -->
<property name="initialPoolSize" value="5"/>
<property name="minPoolSize" value="5" />
<property name="maxPoolSize" value="20" />
<property name="maxIdleTime" value="30000" />
</bean>
<!-- Step 2: Setup Hibernate session factory -->
<bean id="sessionFactory"
class="org.springframework.orm.hibernate5.LocalSessionFactoryBean">
<property name="dataSource" ref="myDataSource" />
<property name="packagesToScan" value="com.luv2code.springdemo.entity" />
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
<prop key="hibernate.show_sql">true</prop>
</props>
</property>
</bean>
<!-- Step 3: Setup Hibernate transaction manager -->
<bean id="myTransactionManager"
class="org.springframework.orm.hibernate5.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory"/>
</bean>
<!-- Step 4: Enable configuration of transactional behavior based on annotations -->
<tx:annotation-driven transaction-manager="myTransactionManager" />
<!-- Add support for reading web resources: css, images, js, etc ... -->
<mvc:resources location="/resources/" mapping="/resources/**"></mvc:resources>
</beans>
And there is a Controller class... Just in case ...
package com.luv2code.springdemo.controller;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
#Controller
#RequestMapping("/customer")
public class CustomerController {
#RequestMapping("/list")
public String listAll(Model model) {
return "list-customers";
}
}
I got the problem fixed...
Thank you all for the help it made my think again. So I refactor the code from zero checked the libraries and it ran smoothly. So the issue was with the libraries because after refactoring the code it did not work. But checking the libraries it worked.
I need to implement Spring's #Transactional annotation but I'm not being able to do so.
I had tried a lot of methods in the past 3 weeks but none of them worked.
I'm also need to use EntityManager. To test if Spring's was working, I tried to inject the EntityManager using #PersistenceContext (I also tried using #PersistenceUnit and/with EntityManagerFactory) but always I got nullPointerException.
#PersistenceContext(unitName = "sistema")
protected EntityManager entityManager;
Basically I need to know how to make spring's annotations to work and how to implement a Transaction manager using those technologies:
persitence.xml
<?xml version="1.0" encoding="UTF-8"?>
<persistence xmlns="http://java.sun.com/xml/ns/persistence"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"
version="2.0">
<persistence-unit name="sistema" transaction-type="RESOURCE_LOCAL">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<class>com.sis.vo.Person</class>
<properties>
<property name="hibernate.connection.driver_class" value="com.mysql.jdbc.Driver" />
<property name="hibernate.connection.autocommit" value="false" />
<property name="hibernate.dialect" value="org.hibernate.dialect.MySQL5Dialect"/>
<property name="hibernate.enable_lazy_load_no_trans" value="false"/>
<property name="hibernate.show_sql" value="false" />
<property name="hibernate.format_sql" value="false"/>
<!-- do I need those? -->
<property name="hibernate.connection.url" value="jdbc:mysql://localhost/myDatabase?autoReconnect=true&useSSL=false" />
<property name="hibernate.connection.username" value="myUser" />
<property name="hibernate.connection.password" value="myPass" />
</properties>
</persistence-unit>
</persistence>
spring.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"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:jee="http://www.springframework.org/schema/jee"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.3.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd
http://www.springframework.org/schema/jee
http://www.springframework.org/schema/jee/spring-jee-4.3.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-4.3.xsd">
<context:annotation-config />
<mvc:annotation-driven />
<bean id="hikariConfig" class="com.zaxxer.hikari.HikariConfig">
<property name="poolName" value="sisHikariCP" />
<property name="connectionTestQuery" value="SELECT 1" />
<property name="dataSourceClassName" value="com.mysql.jdbc.jdbc2.optional.MysqlDataSource" />
<property name="minimumIdle" value="3" />
<property name="maximumPoolSize" value="100" />
<property name="idleTimeout" value="740000" />
<property name="maxLifetime" value="1740000" />
<property name="leakDetectionThreshold" value="30000" />
<property name="dataSourceProperties">
<props>
<prop key="url">jdbc:mysql://localhost/myDatabase?autoReconnect=true&useSSL=false</prop>
<prop key="user">myUser</prop>
<prop key="password">myPass</prop>
<prop key="prepStmtCacheSize">350</prop>
<prop key="prepStmtCacheSqlLimit">2048</prop>
<prop key="cachePrepStmts">true</prop>
<prop key="useServerPrepStmts">true</prop>
<prop key="useLocalSessionState">true</prop>
<prop key="useLocalTransactionState">true</prop>
<prop key="rewriteBatchedStatements">true</prop>
<prop key="cacheResultSetMetadata">true</prop>
<prop key="cacheResultSetMetadata">true</prop>
<prop key="cacheServerConfiguration">true</prop>
<prop key="elideSetAutoCommits">true</prop>
<prop key="maintainTimeStats">false</prop>
</props>
</property>
</bean>
<bean id="dataSource" class="com.zaxxer.hikari.HikariDataSource" destroy-method="close">
<constructor-arg ref="hikariConfig" />
</bean>
<bean id="myJpaVendorAdapter" class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter" />
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="jpaVendorAdapter" ref="myJpaVendorAdapter" />
</bean>
<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory" />
</bean>
<tx:annotation-driven transaction-manager="transactionManager" />
</beans>
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
id="WebApp_ID" version="3.0">
<display-name>sis</display-name>
<context-param>
<param-name>javax.faces.INTERPRET_EMPTY_STRING_SUBMITTED_VALUES_AS_NULL</param-name>
<param-value>true</param-value>
</context-param>
<welcome-file-list>
<welcome-file>index.jsf</welcome-file>
</welcome-file-list>
<servlet>
<servlet-name>Faces Servlet</servlet-name>
<servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>Faces Servlet</servlet-name>
<url-pattern>*.jsf</url-pattern>
</servlet-mapping>
<!-- SPRING -->
<servlet>
<servlet-name>Spring Servlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>
/WEB-INF/spring.xml
</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
</web-app>
DAO
#Repository
public class GenericListDAO<E> {
#PersistenceContext(unitName = "sistema")
protected EntityManager entityManager;
public EntityManager getEntityManager() {
return entityManager;
}
public GenericListDAO() {
}
//rest of the code (persist, find, etc)
}
Versions:
Spring Version: 4.3.12
Hibernate Version: 5.1.10.Final
HikariCP Version: 2.7.3
JDK Version: 1.8.0_121
Tomcat version: 8.5.23
Thank you!
This is what i use to configure my transaction manager
<bean id="myDatasource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="${jdbc.driverClassName}"/>
<property name="url" value="${jdbc.url}"/>
<property name="username" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
</bean>
<bean id="myJpaVendorAdapter" class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter" />
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="myDatasource" />
<property name="jpaVendorAdapter" ref="myJpaVendorAdapter" />
</bean>
<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory" />
</bean>
<tx:annotation-driven transaction-manager="transactionManager" />
entityManagerFactory bean will use your persistence.xml from classpath to create the persistance unit.
update
get your persistence context like this
#PersistenceContext(unitName="sistema")
protected EntityManager em;
also make sure the class that is using the persistence context is annotated with #Repository
update
can you add this to your web.xml
<!-- The definition of the Root Spring Container shared by all Servlets
and Filters -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>
classpath:/WEB-INF/spring-root-context.xml
</param-value>
</context-param>
<!-- Creates the Spring Container shared by all Servlets and Filters -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
now create a new file spring-root-context.xml next to spring.xml and move all the DB and transaction related stuff to spring-root-context.xml.
So spring.xml will be your servlet context and spring-root-context.xml will be your root context.
anything related to controllers will go to spring.xml all other beans will go to spring-root-context.xml
also add <context:component-scan base-package="package.for.genericdao" /> to both spring.xml and spring-root-context.xml and replace package.for.genericdao with your base package name.
I tried a lot but didn't reach. I want to return valid Json object from the controller. I have put some data in the DB and want to list them. Here is my code
web.xml
<web-app version="2.5" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee"
xsi:schemalocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<servlet>
<servlet-name>sdnext</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name><param-value>/WEB-INF/config/sdnext-servlet.xml</param-value></init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>sdnext</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>
sdnext-servlet.xml
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd">
<mvc:annotation-driven/>
<context:annotation-config />
<context:property-placeholder location="classpath:resources/database.properties"/>
<context:component-scan base-package="com.dineshonjava"/>
<tx:annotation-driven transaction-manager="hibernateTransactionManager"/>
<bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver"
id="jspViewResolver">
<property name="prefix" value="/WEB-INF/views/"></property>
<property name="suffix" value=".jsp"></property>
</bean>
<bean class="org.springframework.jdbc.datasource.DriverManagerDataSource"
id="dataSource">
<property name="driverClassName" value="${database.driver}"></property>
<property name="url" value="${database.url}"></property>
<property name="username" value="${database.user}"></property>
<property name="password" value="${database.password}"></property>
</bean>
<bean
class="org.springframework.orm.hibernate4.LocalSessionFactoryBean"
id="sessionFactory">
<property name="dataSource" ref="dataSource"></property>
<property name="annotatedClasses">
<list>
<value>com.dineshonjava.model.Employee</value>
</list>
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">${hibernate.dialect}</prop>
<prop key="hibernate.show_sql">${hibernate.show_sql}</prop>
<prop key="hibernate.hbm2ddl.auto">${hibernate.hbm2ddl.auto} </prop>
</props>
</property>
</bean>
<bean class="org.springframework.orm.hibernate4.HibernateTransactionManager"
id="hibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory"></property>
</bean>
</beans>
and EmployeeController.java
import org.springframework.beans.factory.annotation.Autowired;
#Controller
public class EmployeeController {
#Autowired
private EmployeeService employeeService;
#RequestMapping(value = "/index", method = RequestMethod.GET)
public #ResponseBody List<Employee> listAllUsers() {
return employeeService.listEmployeess();
}
}
and it gives me this line in the console:
Hibernate:
select this_.EMPID as EMPID1_0_0_, this_.ADDRESS as ADDRESS2_0_0_, this_.EMPAGE as EMPAGE3_0_0_,
this_.EMPNAME as EMPNAME4_0_0_, this_.SALARY as SALARY5_0_0_ from employee this_
so how to get the values of the table and put it in Json object ?
I am building a spring + hibernate application. I'm getting a 404 error, when I run the project. The compiler does not show any error messages, it indicates that the application server (tomcat 7) loads the servlet, but does not display the root page indicated in the controller class.
Help please......
Config.....
`
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.0.xsd">
<context:property-placeholder location="classpath:resources/database.properties" />
<context:component-scan base-package="langS.com" />
<tx:annotation-driven transaction-manager="hibernateTransactionManager" />
<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">
<property name="driverClassName" value="${database.driver}" />
<property name="url" value="${database.url}" />
<property name="username" value="${database.user}" />
<property name="password" value="${database.password}" />
</bean>
<bean id="sessionFactory"
class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="packagesToScan">
<list>
<value>com.langS.model.Employee</value>
<value>com.langS.EmployeeBean</value>
</list>
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">${hibernate.dialect}</prop>
<prop key="hibernate.show_sql">${hibernate.show_sql}</prop>
<prop key="hibernate.hbm2ddl.auto">${hibernate.hbm2ddl.auto}</prop>
</props>
</property>
</bean>
<bean id="hibernateTransactionManager"
class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory" />
</bean>
</beans>`
Controller
#Controller
public class NewController {
#Autowired
private EmployeeService employeeService;
#RequestMapping(value = "/index", method = RequestMethod.GET)
public String welcomeHome(){
return "index";
}
#RequestMapping(value = "/addEmployee", method = RequestMethod.GET)
public String addEmployeeRecord(){
return "addEmployee";
}
#RequestMapping(value = "/employeeList", method = RequestMethod.GET)
public String listEmployeesPage(){
return "employeesList";
}
}
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee"
xsi:schemalocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<servlet>
<servlet-name>sdnext</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet
</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/config/dispatcher-servlet.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>sdnext</servlet-name>
<url-pattern>*.html</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
</welcome-file-list>
</web-app>
404 means, that your tomcat server is getting the request, but does not now how to process the given request path.
In other words you have a bug in your URL or your configuration does not what you want it to do.
We need your configuration and desired URL to help you.
The problem is that you map the dispatcher servlet only to *.html, but you map you Controllers without using the .html suffix.
To make it work, either map you controller differently, ie :
#RequestMapping(value = "/index.html", method = RequestMethod.GET)
public String welcomeHome(){
return "index";
}
OR (and what I would do) :
Map you dispatcher servlet to all requests in web.xml :
<servlet-mapping>
<servlet-name>sdnext</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
Then if you want to call your application with a url looking like this :
http://somehost:someport/YourApplication/
Then you'll need to map some controller method like this :
#RequestMapping(value = {"/", "/index"}, method = RequestMethod.GET)
public String home() {
// your code here
}
This way, calling http://somehost:someport/YourApplication/ OR http://somehost:someport/YourApplication/index will result in the same controller method being called.
I'm trying to implement solr search with Spring and postgres using maven but on running the appilcation i get 404 with the exception
Exception processing loader WebappLoader[/solrjExample] background process
java.lang.RuntimeException: java.util.concurrent.ExecutionException: java.lang.StackOverflowError
I really don't understand what is the problem Here is my spring-servlet:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:beans=" http://www.springframework.org/schema/beans "
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:solr="http://www.springframework.org/schema/data/solr"
xmlns:p="http://www.springframework.org/schema/p"
xsi:schemaLocation="http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/data/solr
http://www.springframework.org/schema/data/solr/spring-solr.xsd">
<context:component-scan base-package="org.tcs.com.controller" />
<context:property-placeholder location="classpath:org/tcs/com/lak/resources/application.properties" />
<mvc:annotation-driven />
<bean id="jacksonMessageConverter"
class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter" />
<bean
class="org.springframework.web.servlet.view.ContentNegotiatingViewResolver">
<property name="mediaTypes">
<map>
<entry key="html" value="text/html" />
<entry key="json" value="application/json" />
</map>
</property>
<property name="viewResolvers">
<list>
<bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<!-- <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"
/> -->
<property name="prefix" value="/WEB-INF/jsp/" />
<property name="suffix" value=".jsp" />
</bean>
</list>
</property>
<property name="defaultViews">
<list>
<bean
class="org.springframework.web.servlet.view.json.MappingJacksonJsonView">
<property name="prefixJson" value="true" />
</bean>
</list>
</property>
</bean>
<!-- ##################################### SOLR ##################################### -->
<!-- Configures HTTP Solr server -->
<solr:solr-server id="solrServer" url="${solr.server.url}" />
<!-- Configures Solr template -->
<bean id="solrTemplate" class="org.springframework.data.solr.core.SolrTemplate">
<constructor-arg index="0" ref="solrServer" />
</bean>
<!-- ##################################### postgres ##################################### -->
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
destroy-method="close" p:driverClassName="org.postgresql.Driver"
p:url="jdbc:postgresql://localhost:5432/Prime" p:username="postgres"
p:password="Password" />
<!-- ##################################### Hibernate ##################################### -->
<bean id="sessionfactory"
class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="configLocation">
<value>classpath:Hibernate.cfg.xml</value>
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.PostgreSQLDialect</prop>
<prop key="hibernate.show_sql">true</prop>
<prop key="hibernate.cache.use_second_level_cache">false</prop>
</props>
</property>
</bean>
<bean id="transactionManager"
class="org.springframework.orm.hibernate4.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionfactory" />
</bean>
</beans>
And my web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_ID" version="2.4"
xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<display-name>solrjExample</display-name>
<servlet>
<servlet-name>solrjExample</servlet-name>
<servlet-class>
org.springframework.web.servlet.DispatcherServlet
</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>WEB-INF/slorjExample-servlet.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>solrjExample</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
I think there is something wrong with the configuration or something as i am new to solr.
Thanks for the help.
Generally this kind of error is due to a recursive infinite loop. Do you have some own code executed at server startup ?
The basics behind this error was the use the use of both Solrj and Spring-data-solr it is basically because of the logger used in these API's call each other recursively until the stack overflow error is thrown bring down the tomcat. So i removed the spring-data-solr dependency from my pom.
The purpose of slf4j-jcl module is to delegate or redirect calls made to an SLF4J logger to jakarta commons logging (JCL).
The purpose of the jcl-over-slf4j module is to redirect calls made to a JCL logger to SLF4J.
If both slf4j-jcl.jar and jcl-over-slf4j.jar are present on the class path, then a StackOverflowError will inevitably occur immediately after the first invocation of an SLF4J or a JCL logger.
The problem is described in the link http://www.slf4j.org/legacy.html
Trying to find if there is a workaround for the same.
What do you mean when you say you run your application ? Are you running some sort of searching or you mean when the welcome page is loading ?
Is there a specific page you access by default when you run your application ?
Did you try and put some debug points in the piece of code which runs when you start up your application ?
Or do you mean you get this error when you start your server after deploying your application ?