spring - 使用 Jasypt 和 Spring Security 3.1 时收到 NullPointerException

Question

我正在尝试使用 Spring Security 配置 Jasypt。我的配置文件如下所示:

    jdbc.driver=com.mysql.jdbc.Driver
    jdbc.url=jdbc:mysql://localhost:8090/sample
    jdbc.username=ENC(*****) where the *****=the salted username
    jdbc.password=ENC(*****) where the *****=the salted password

我的 servlet xml 包含以下格式的正确 bean 设置:

 <bean id="propertyPlaceholderConfigurer"
      class="org.jasypt.spring31.properties.EncryptablePropertyPlaceholderConfigurer">
  <constructor-arg ref="configurationEncryptor" />
  <property name="location" value="/WEB-INF/jdbc.properties" />
</bean>

<bean id="configurationEncryptor" class="org.jasypt.encryption.pbe.StandardPBEStringEncryptor">
  <property name="config" ref="environmentVariablesConfiguration" />
</bean>

<bean id="environmentVariablesConfiguration"
      class="org.jasypt.encryption.pbe.config.EnvironmentStringPBEConfig">
  <property name="algorithm" value="PBEWithMD5AndDES" />
    <property name="passwordEnvName" value="APP_ENCRYPTION_PASSWORD" />
  <!--<property name="password" value="**********" />-->
</bean>
       <bean id="dataSource"
    class="org.springframework.jdbc.datasource.DriverManagerDataSource">
    <property name="driverClassName" value="${jdbc.driver}" />
    <property name="url" value="${jdbc.url}" />
    <property name="username" value="${jdbc.username}" />
    <property name="password" value="${jdbc.password}" />
   </bean>

我的环境变量在 Windows 中已正确设置为 APP_ENCRYPTION_PASSWORD。当我从命令行回显它时，它是可见的。当我使用此设置时，我得到下面的空指针堆栈跟踪。当我使用硬编码的盐密码“-->”时，我的应用程序运行顺利。有人可以告诉我为什么 Jasypt 或 Spring 可能无法正确获取我的环境变量吗？任何信息都将受到欢迎。谢谢。

 org.springframework.web.context.ContextLoader initWebApplicationContext
SEVERE: Context initialization failed
java.lang.NullPointerException
    at org.jasypt.encryption.pbe.config.SimplePBEConfig.getPasswordCharArray(SimplePBEConfig.java:434)
    at org.jasypt.encryption.pbe.StandardPBEByteEncryptor.resolveConfigurationPassword(StandardPBEByteEncryptor.java:740)
    at org.jasypt.encryption.pbe.StandardPBEByteEncryptor.initialize(StandardPBEByteEncryptor.java:590)
    at org.jasypt.encryption.pbe.StandardPBEStringEncryptor.initialize(StandardPBEStringEncryptor.java:553)
    at org.jasypt.encryption.pbe.StandardPBEStringEncryptor.decrypt(StandardPBEStringEncryptor.java:705)
    at org.jasypt.properties.PropertyValueEncryptionUtils.decrypt(PropertyValueEncryptionUtils.java:72)
    at org.jasypt.spring31.properties.EncryptablePropertyPlaceholderConfigurer.convertPropertyValue(EncryptablePropertyPlaceholderConfigurer.java:109)
    at org.springframework.beans.factory.config.PropertyResourceConfigurer.convertProperty(PropertyResourceConfigurer.java:121)
    at org.springframework.beans.factory.config.PropertyResourceConfigurer.convertProperties(PropertyResourceConfigurer.java:104)
    at org.springframework.beans.factory.config.PropertyResourceConfigurer.postProcessBeanFactory(PropertyResourceConfigurer.java:81)
    at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:687)
    at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:662)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:454)
    at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:388)
    at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:293)
    at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:111)
    at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4701)
    at org.apache.catalina.core.StandardContext$1.call(StandardContext.java:5204)
    at org.apache.catalina.core.StandardContext$1.call(StandardContext.java:5199)
    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
    at java.util.concurrent.FutureTask.run(FutureTask.java:138)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
    at java.lang.Thread.run(Thread.java:662)
Aug 7, 2013 8:46:15 AM org.apache.catalina.core.StandardContext listenerStart
SEVERE: Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener
java.lang.NullPointerException
    at org.jasypt.encryption.pbe.config.SimplePBEConfig.getPasswordCharArray(SimplePBEConfig.java:434)
    at org.jasypt.encryption.pbe.StandardPBEByteEncryptor.resolveConfigurationPassword(StandardPBEByteEncryptor.java:740)
    at org.jasypt.encryption.pbe.StandardPBEByteEncryptor.initialize(StandardPBEByteEncryptor.java:590)
    at org.jasypt.encryption.pbe.StandardPBEStringEncryptor.initialize(StandardPBEStringEncryptor.java:553)
    at org.jasypt.encryption.pbe.StandardPBEStringEncryptor.decrypt(StandardPBEStringEncryptor.java:705)
    at org.jasypt.properties.PropertyValueEncryptionUtils.decrypt(PropertyValueEncryptionUtils.java:72)
    at org.jasypt.spring31.properties.EncryptablePropertyPlaceholderConfigurer.convertPropertyValue(EncryptablePropertyPlaceholderConfigurer.java:109)
    at org.springframework.beans.factory.config.PropertyResourceConfigurer.convertProperty(PropertyResourceConfigurer.java:121)
    at org.springframework.beans.factory.config.PropertyResourceConfigurer.convertProperties(PropertyResourceConfigurer.java:104)
    at org.springframework.beans.factory.config.PropertyResourceConfigurer.postProcessBeanFactory(PropertyResourceConfigurer.java:81)
    at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:687)
    at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:662)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:454)
    at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:388)
    at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:293)
    at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:111)
    at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4701)
    at org.apache.catalina.core.StandardContext$1.call(StandardContext.java:5204)
    at org.apache.catalina.core.StandardContext$1.call(StandardContext.java:5199)
    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
    at java.util.concurrent.FutureTask.run(FutureTask.java:138)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
    at java.lang.Thread.run(Thread.java:662)

Answer 1

也许您可以尝试重新启动 Windows 命令提示符并重试。

我遇到了类似的错误，并且在设置环境变量后，我忘记重新启动 Windows 命令提示符并遇到了相同的错误。

重新启动 Windows 命令提示符为我解决了这个问题。