Question

I have the following class that doesn’t seem to be returning a List from the getter.

package springmvc.service;

import java.math.BigDecimal;
import java.util.LinkedList;
import java.util.List;

import springmvc.model.Brand;
import springmvc.model.Car;

public class CarManager {

    private static List<Car> carList;

    static {
        Brand brand1 = new Brand();
        brand1.setId((long) 1);
        brand1.setName("Mercedes");
        brand1.setCountry("Germany");

        Brand brand2 = new Brand();
        brand2.setId((long) 2);
        brand2.setName("Peugeot");
        brand2.setCountry("France");

        Car car1 = new Car();
        car1.setId((long) 1);
        car1.setBrand(brand1);
        car1.setModel("SL 500");
        car1.setPrice(new BigDecimal(40000));

        Car car2 = new Car();
        car2.setId((long) 2);
        car2.setBrand(brand2);
        car2.setModel("607");
        car2.setPrice(new BigDecimal(35000));

        carList = new LinkedList<Car>();
        carList.add(car1);
        carList.add(car2);
    }

    public List<Car> getCarList() {
        return carList;
    }
}

For the record, here is the Spring controller class where I’m calling the above class. All the statics are copied from the tutorial I got this from.

package springmvc.web;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.Controller;

import springmvc.service.CarManager;

public class CarListController implements Controller {
    public ModelAndView handleRequest(HttpServletRequest arg0,
            HttpServletResponse arg1) throws Exception {

        CarManager carManager = new CarManager();

        ModelAndView modelAndView = new ModelAndView("carList");
        modelAndView.addObject("carList", carManager.getCarList());

        return modelAndView;
    }
}

Here is what I have for spring-servlet.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"
    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">
    <bean name="/carList.jsp" class="springmvc.web.CarListController"/>
    <bean id="viewResolver"
        class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="viewClass"
            value="org.springframework.web.servlet.view.JstlView" />
        <property name="suffix" value=".jsp" />
    </bean>
</beans>

Answer 1

Check your servlet container log for any exceptions being thrown. It could be throwing an exception in the static initialiser before it creates carList.