[英]org.springframework.beans.NotWritablePropertyException. Invalid property <blah> is not writable or has an invalid setter method
[英]NotWritablePropertyException: Bean property 'dataSource' is not writable or has an invalid setter method
我正在我的應用程序服務層中實現Spring Transaction。
我指的是教程中的示例,以編程方式實現spring事務。
https://www.tutorialspoint.com/spring/programmatic_management.htm
我遵循了上面提到的每個步驟.....但是在xml文件中創建bean時遇到了問題。
錯誤:
線程“主”中的異常org.springframework.beans.factory.BeanCreationException:創建類路徑資源[database / spring.xml]中定義的名稱為'transactionManager'的bean時出錯:設置屬性值時出錯; 嵌套的異常是org.springframework.beans.NotWritablePropertyException:Bean類[org.springframework.jdbc.datasource.DataSourceTransactionManager]的無效屬性'dataSource':Bean屬性'dataSource'是不可寫的或具有無效的setter方法。 setter的參數類型是否與getter的返回類型匹配?
系統和應用程序配置:操作系統:ubuntu 16.0.4春季版本:-5.0.3 Tomcat:9 jdk:1.9
IDE:Eclipse氧氣3
如果有人可以給我解決方案,這對我將非常有幫助。
<?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-2.5.xsd">
<!-- ********************* Initialization for Inventory database -->
<bean id="dataSource"
class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver" />
<property name="url" value="jdbc:mysql://localhost:3306/myDatabase" />
<property name="username" value="root" />
<property name="password" value="root" />
</bean>
<!--********************* Initialization for TransactionManager -->
<bean class="org.springframework.jdbc.datasource.DataSourceTransactionManager" id="transactionManager">
<property name="dataSource" ref="dataSource"></property>
</bean>
</beans>
public class MyService implements InventoryServiceIface{
private MyDAO dao;
private PlatformTransactionManager transactionManager;
public void setTransactionManager(PlatformTransactionManager transactionManager) {
this.transactionManager = transactionManager;
}
public void setDAO(MyDAO dao) {
this.dao = dao;
}
public Student saveStudent(Student tudent) throws ServiceException{
validate(Student); // validate the data inside party object
TransactionStatus status = beginTransaction(); // begin database transaction
try
{
rollbackTransaction();
Student = dao.saveStudent(student);
}
catch(ServiceException e)
{
rollbackTransaction(status);
throw e;
}
catch(Exception e)
{
rollbackTransaction(status);
throw new ServiceException(e);
}
commitTransaction(status);
return student;
}
public TransactionStatus beginTransaction()
{
System.out.println("TRANSACTION BEGINS....");
return transactionManager.getTransaction(new DefaultTransactionDefinition());
}
public void rollbackTransaction(TransactionStatus status)
{
System.out.println("ROLL BACK....");
transactionManager.rollback(status);
}
public void commitTransaction(TransactionStatus status)
{
System.out.println("TRANSACTION COMMITTED....");
transactionManager.commit(status);
}
}// End of Class
設置數據源的DataSourceTransactionManager的屬性名稱是在stacktrace dataSource中寫入的,而不是xxxxxDataSource。 您的配置應如下
<bean class="org.springframework.jdbc.datasource.
DataSourceTransactionManager" id="transactionManager">
<property name="dataSource" ref="xxxxDataSource">
</property>
</bean>
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