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使用spring为我的testng测试套件注入对象时,发生NullPointerException。这里是我的.xml配置:使用@Autowired在Spring对象注入时抛出的NullPointerException异常
<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:util="http://www.springframework.org/schema/util" xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:hhla="http://www.hhla.de/schema/spring" xmlns:jee="http://www.springframework.org/schema/jee"
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/jee http://www.springframework.org/schema/jee/spring-jee-3.0.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.0.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd">
<context:annotation-config />
<context:component-scan base-package="my.package" />
<bean class="org.springframework.context.support.PropertySourcesPlaceholderConfigurer">
<property name="locations">
<list>
<value>classpath:test/props/my.properties</value>
</list>
</property>
</bean>
<bean id="my.package.svc.ap.calc.inspektion" class="my.package.entities.CarBean">
<property name="brand" value="${brand}"/>
<property name="model" value="${model}"/>
<property name="fuelType" value="${fuel}"/>
<property name="construction" value="${construction}"/>
<property name="mileage" value="${mileage}"/>
<property name="engineOptionIndex">
<value type="java.lang.Integer">
${engine}
</value>
</property>
<property name="approvalYear" value="${calc.inspektion.year}"/>
<property name="approvalMonth" value="${calc.inspektion.month}"/>
</bean>
</beans>
CarBean类是使用私有字段的getter和setter方法:
@Component
public class CarBean{
private String brand;
private String model;
private String fuelType;
private String construction;
private String mileage;
private int engineOptionIndex;
private String approvalYear;
private String approvalMonth;
public String getBrand() {
return brand;
}
public void setBrand(String brand) {
this.brand = brand;
}
public String getModel() {
return model;
}
public void setModel(String model) {
this.model = model;
}
....
}
和TestNG的测试类,其中bean应注射:
@ContextConfiguration(locations = { "classpath:META-INF/test-scripts.xml" })
public class SvcApCalcTest extends TestBase {
@Autowired
@Qualifier("my.package.svc.ap.calc.inspektion")
private CarBean inspektionCar;
.....
}
当我引用CarBean时抛出了NullPointerException。
它应该因为被注入?你的TestBase类是什么?确保你的hiearchy有一个'@RunWith(SpringJUnitRunner.class)'... – 2014-11-06 10:35:00
已经尝试过了,仍然会抛出NPE – user1481927 2014-11-06 10:42:33
然后你没有尝试或者在你的配置中有其他错误。如果依赖项为null,则自动装配不会发生,并且该类未由“SpringJUnitRunner”运行,或者您忘记包含某些特定的“TestExecutionListener”而中断了其支持。因此,我对你的'TestBase'类的请求,也许你正在尝试运行的测试代码(或者导致'NullPointer'的代码。 – 2014-11-06 10:46:07