HTTP Status 500 - Request processing failed; nested exception is java.lang.NullPointerException type Exception report message Request processing failed; nested exception is java.lang.NullPointerException description The server encountered an internal…

如下图 一番排查之后发现原来是server层写漏注释了 粗心大意,一天内出现两次写漏注释,SSM框架有意思.…

HTTP Status 500 - Request processing failed; nested exception is java.lang.IllegalArgumentException: Control character in cookie value or attribute. type Exception report message Request processing failed; nested exception is java.lang.IllegalArgumen…

今天在用idea搭建spring mvc时候报了这个错误,缺少jstl的依赖包.由于是使用的spring-core的依赖,而spring-core里面是有jstl的.这就郁闷了,最后是在自己的pom.xml里面又引入了jstl解决的 <dependency> <groupId>javax.servlet</groupId> <artifactId>jstl</artifactId> <version>1.2</version&g…

解决方案:修改catalina.sh 文件加上-Djava.awt.headless=true JAVA_OPTS="$JAVA_OPTS $JSSE_OPTS -Djava.awt.headless=true "…

问题:调用的方法在一个接口类中,但我并没有注入那个被调用的类 解决:在UserEntity前加上@Autowired @Controller public class MainController { // 自动装配数据库接口,不需要再写原始的Connection来操作数据库 @Autowired UserRepository userRepository; @RequestMapping(value = "/",method = RequestMethod.GET) public S…

解决:service类或dao类需要@Autowired…

有的service没有依赖注入:…

HTTP Status 500 - Request processing failed; nested exception is org.springframework.jdbc.BadSqlGrammarException: type Exception report message Request processing failed; nested exception is org.springframework.jdbc.BadSqlGrammarException: descriptio…

1.什么操作出现:当我在项目中添加产品或者修改时,浏览器出现HTTP Status 500 - Request processing failed; nested exception is org.hibernate.exception.GenericJDBCException: could not execute statement; Ecplise出现这个: 十二月 20, 2017 1:51:02 下午 org.apache.catalina.core.StandardWrapperVal…