msgsun的博客

eclipse不编译，每次修改代码控制台都显示错误svn:The working copy needs to be upgradedorg.apache.subversion.javahl.ClientException: The working copy needs to be upgradedsvn: Working copy ‘E:\aliyun-spirit\spiritmap0916′ is too old (format 10, created by Subversion 1.6)

MySQL中varchar,char和text三者的区别

HTTP Status 500 – Internal Server ErrorType Exception ReportMessage Request processing failed; nested exception is org.springframework.transaction.CannotCreateTransactionException: Could not open JDBC Connection for transaction; nested exception is java

Httpservlet cannot be resolved to a type，显然是Eclipse找不到相应的包，即javax.servlet。Reason：jdk 里不包括servlet-api.jar 这个包，此包在Tomcat 中存在项目名--> 右键Property--> 选择JavaBuild Path--> 选择Add External JARs--> 选择把servlet-api.jar 的路径输入即可eg:...

新导入的项目，发现jsp报错，鼠标放在有红色波浪线的代码处，Description Resource Path Location Typejavax.servlet.jsp.JspException cannot be resolved to a type login.jsp /springmvc-mybatis/WebContent/WEB-INF/jsp line 11 JSP Problem这是项目中缺少jsp-api.jar包引起的。So...