ssm实战HTTP Status 500 - Servlet.init() for servlet spring-dispatcher threw exception

Question

 java.lang.RuntimeException: javax.crypto.IllegalBlockSizeException: Input length must be multiple of 8 when decrypting with padded cipher

at com.imooc.o2o.util.DESUtil.getDecryptString(DESUtil.java:92)

at com.imooc.o2o.util.EncryptPropertyPlaceholderConfigurer.convertProperty(EncryptPropertyPlaceholderConfigurer.java:16)

at org.springframework.beans.factory.config.PropertyResourceConfigurer.convertProperties(PropertyResourceConfigurer.java:106)

at org.springframework.beans.factory.config.PropertyResourceConfigurer.postProcessBeanFactory(PropertyResourceConfigurer.java:83)

at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:281)

at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:161)

at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:686)

at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:524)

at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:668)

at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:634)

at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:682)

at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:553)

at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:494)

at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:138)

at javax.servlet.GenericServlet.init(GenericServlet.java:158)

at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1227)

at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1140)

at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:817)

at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:135)

at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)

at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1132)

at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527)

at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516)

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)

at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

at java.lang.Thread.run(Thread.java:748)

Caused by: javax.crypto.IllegalBlockSizeException: Input length must be multiple of 8 when decrypting with padded cipher

at com.sun.crypto.provider.CipherCore.doFinal(CipherCore.java:936)

at com.sun.crypto.provider.CipherCore.doFinal(CipherCore.java:847)

at com.sun.crypto.provider.DESCipher.engineDoFinal(DESCipher.java:314)

at javax.crypto.Cipher.doFinal(Cipher.java:2164)

at com.imooc.o2o.util.DESUtil.getDecryptString(DESUtil.java:87)

... 32 more

Answer 1

看字面意思是说输入的数必须是8的倍数