Spring Security虽然比JAAS进步很大,但还是先天不足,达不到ASP.NET中的认证和授权的方便快捷.这里演示登录.注销.记住我的常规功能,认证上自定义提供程序避免对数据库的依赖,授权上自定义提供程序消除从缓存加载角色信息造成的角色变更无效副作用. 1.基于java config的Spring Security基础配置 (1)使用AbstractSecurityWebApplicationInitializer集成到Spring MVC public class SecurityI…
google-java-format plugin should intercept the “Reformat Code” action in IDEA (Ctrl+Alt+L) and apply its own rules. However, it does not work with imports for some reason, so to fix that you have to import a Java Google Code Style XML file to your c…
Understanding how Java code is compiled into byte code and executed on a Java Virtual Machine (JVM) is critical because it helps you understand what is happening as your program executes. This understanding not only ensures that language features mak…
[转]Java Code Examples for android.util.JsonReader The following are top voted examples for showing how to use android.util.JsonReader. These examples are extracted from open source projects. You can vote up the examples you like and your votes will b…
Elasticsearch虽然定位为Search Engine,但是因其可以持久化数据,很多时候,我们把Elasticsearch当成Database用,但是Elasticsearch不支持SQL,就需要把SQL逻辑转换成代码实现对应的功能. 以下列举了一些常用的SQL转换成对应的Java代码. 1.按某个field group by查询count SELECT fieldA, COUNT(fieldA) from table WHERE fieldC = "hoge" AND fie…