0

这是我得到的错误跟踪：

 org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'DefaultPG' defined in file [C:\Users\ali\workspace\tms-payment\PaymentGatewayConfigurations.xml]: Error setting property values; nested exception is org.springframework.beans.NotWritablePropertyException: Invalid property 'paymentGatewayName' of bean class [me.tms.payment.common.DefaultPaymentGateway]: Bean property 'paymentGatewayName' is not writable or has an invalid setter method. Does the parameter type of the setter match the return type of the getter?
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1361)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1086)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:517)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:310)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:190)
at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1075)
at me.tms.payment.common.DefaultPaymentGateway.getPaymentGatewayName(DefaultPaymentGateway.java:12)
at me.tms.payment.test.DefaultPaymentGatewayTest.test(DefaultPaymentGatewayTest.java:16)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.junit.internal.runners.TestMethod.invoke(TestMethod.java:59)
at org.junit.internal.runners.MethodRoadie.runTestMethod(MethodRoadie.java:98)
at org.junit.internal.runners.MethodRoadie$2.run(MethodRoadie.java:79)
at org.junit.internal.runners.MethodRoadie.runBeforesThenTestThenAfters(MethodRoadie.java:87)
at org.junit.internal.runners.MethodRoadie.runTest(MethodRoadie.java:77)
at org.junit.internal.runners.MethodRoadie.run(MethodRoadie.java:42)
at org.junit.internal.runners.JUnit4ClassRunner.invokeTestMethod(JUnit4ClassRunner.java:88)
at org.junit.internal.runners.JUnit4ClassRunner.runMethods(JUnit4ClassRunner.java:51)
at org.junit.internal.runners.JUnit4ClassRunner$1.run(JUnit4ClassRunner.java:44)
at org.junit.internal.runners.ClassRoadie.runUnprotected(ClassRoadie.java:27)
at org.junit.internal.runners.ClassRoadie.runProtected(ClassRoadie.java:37)
at org.junit.internal.runners.JUnit4ClassRunner.run(JUnit4ClassRunner.java:42)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
Caused by: org.springframework.beans.NotWritablePropertyException: Invalid property 'paymentGatewayName' of bean class [me.tms.payment.common.DefaultPaymentGateway]: Bean property 'paymentGatewayName' is not writable or has an invalid setter method. Does the parameter type of the setter match the return type of the getter?
at org.springframework.beans.BeanWrapperImpl.setPropertyValue(BeanWrapperImpl.java:1024)
at org.springframework.beans.BeanWrapperImpl.setPropertyValue(BeanWrapperImpl.java:900)
at org.springframework.beans.AbstractPropertyAccessor.setPropertyValues(AbstractPropertyAccessor.java:76)
at org.springframework.beans.AbstractPropertyAccessor.setPropertyValues(AbstractPropertyAccessor.java:58)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1358)
... 30 more

这是报告的课程：

package me.tms.payment.common;

import me.tms.payment.configurations.ConfigurationsUtility;
import me.tms.payment.configurations.PaymentGatewayConfigurations;

 public class DefaultPaymentGateway {

private static String paymentGatewayName;

@SuppressWarnings("static-access")
public static String getPaymentGatewayName() {
    DefaultPaymentGateway defaultPaymentGateway = (DefaultPaymentGateway)ConfigurationsUtility.getBeanConfigurationContext(PaymentGatewayConfigurations.configurationsFile).getBean("DefaultPG");
     setPaymentGatewayName(defaultPaymentGateway.paymentGatewayName);
    return paymentGatewayName;
}

public static void setPaymentGatewayName(String paymentGatewayName) {
    DefaultPaymentGateway.paymentGatewayName = paymentGatewayName;
}

}

这是豆子：

<!-- Default payment gateway properties -->
<bean id="DefaultPG" class="me.tms.payment.common.DefaultPaymentGateway" scope="prototype">
    <property name="paymentGatewayName" value="VPC"></property>
</bean>

有什么问题 ？

4

4 回答 4

1

Bean property 'paymentGatewayName' is not writable or has an invalid setter method. Does the parameter type of the setter match the return type of the getter?

原因paymentGatewayName是静态的。它不是对象的属性，而是BeanName.paymentGatewayName在您的 jvm 中只有一个。您不能自动装配静态 bean 属性。

消除

<property name="paymentGatewayName" value="VPC"></property>并将其设置在您的班级本身中。

private static String paymentGatewayName="VPC";

或使其非静态。

于 2013-01-02T05:56:35.213 回答
1

您不能在 bean 中注入静态属性，这是 Spring 的缺点。
相同的 Jira https://jira.springsource.org/browse/SPR-3845

解决方法

  1. 创建没有任何注释的类的静态属性
  2. 将类标记为使用 @Component 注入静态属性，以便在 Spring 启动时注入属性
  3. 创建一个设置静态属性的非静态 setter 方法
  4. 用 @Autowired(required = true) 标记 setter 方法

资料来源：http ://www.connorgarvey.com/blog/?p=105 和Injecting values for static constants in Spring

于 2013-01-02T05:58:12.763 回答
1

Bean 不能是静态类。它们需要由 Spring 在内部实例化。并且静态类显然不能被实例化。改用这个：

public class DefaultPaymentGateway {

    private static String paymentGatewayName = "VPN";

    public String getPaymentGatewayName() {
        return paymentGatewayName;
    }

    public void setPaymentGatewayName(String paymentGatewayName) {
        paymentGatewayName = paymentGatewayName;
    }

}

您不应该在 getter/setter 方法中做太多事情。Getter 应该只返回属性，而 setter 应该只设置它。从他们那里调用其他 getter/setter 会带来麻烦。

于 2013-01-02T06:00:07.660 回答
0

不要使用静态设置器，删除设置器中的静态关键字

于 2013-01-02T05:57:15.680 回答