SpringBoot入门笔记(二)IDEA下springboot项目spring+mybatis+sqlserver+log4j+简单登录验证拦截器的框架搭建
2018年09月03日 09:16:44 Spring是框架不是春天 阅读数:144
IDEA下springboot项目spring+mybatis+sqlserver+log4j+简单登录验证拦截器的框架搭建
先贴一个项目的目录结构
Attention:templates.html5是templates目录下新建了一个html5目录
1.项目创建
这个简单,选择jdk目录,填写项目信息,选择springboot版本,勾选一些需要的包依赖,基本上就是一直next,然后finish就好了,略过。。。
2.pom.xml
项目创建时,会将你选择的springboot包依赖加进去,我们需要的是加入一些创建时没有的依赖
2.1 数据库连接池--druid
关于druid数据库连接池的优点和性能就先不说,百度一下,你就知道
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<dependency>
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<groupId>com.alibaba</groupId>
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<artifactId>druid</artifactId>
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<version>1.1.3</version>
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</dependency>
2.2 数据返回格式--JSONObject
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<dependency>
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<groupId>com.alibaba</groupId>
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<artifactId>fastjson</artifactId>
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<version>1.1.36</version>
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</dependency>
2.3日志输出--log4j
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<!-- Log start -->
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<!-- spring boot start -->
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter</artifactId>
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<exclusions>
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<!-- 排除自带的logback依赖 -->
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<exclusion>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-logging</artifactId>
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</exclusion>
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</exclusions>
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</dependency>
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<!-- springboot-log4j -->
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-log4j</artifactId>
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<version>1.3.8.RELEASE</version>
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</dependency>
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<!-- Log end -->
引入log4j之前首先要排除springboot自带的logback依赖,在创建Spring Boot工程时,我们引入了spring-boot-starter
,其中包含了spring-boot-starter-logging
,该依赖内容就是Spring Boot默认的日志框架Logback。
附上一份log4j.properties的文件
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#logger level
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log4j.rootCategory=DEBUG,stdout,DebugAppender,InfoAppender,ErrorAppender
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log4j.debug=true
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log4j.appender.stdout=org.apache.log4j.ConsoleAppender
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log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
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log4j.appender.stdout.layout.ConversionPattern=[QC] %p [%t] %C.%M(%L) | %m%n
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#logger input file
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log4j.logger.DebugAppender.access=DEBUG
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log4j.appender.DebugAppender=org.apache.log4j.DailyRollingFileAppender
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log4j.appender.DebugAppender.File=../logs/a.log
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log4j.appender.DebugAppender.layout=org.apache.log4j.PatternLayout
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log4j.appender.DebugAppender.layout.ConversionPattern=%d-[TS] %p %t %c - %m%n
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#logger input file
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log4j.logger.InfoAppender.access=INFO
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log4j.appender.InfoAppender=org.apache.log4j.DailyRollingFileAppender
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log4j.appender.InfoAppender.File=../logs/b.log
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log4j.appender.InfoAppender.layout=org.apache.log4j.PatternLayout
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log4j.appender.InfoAppender.layout.ConversionPattern=%d-[TS] %p %t %c - %m%n
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#error log input file
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log4j.logger.ErrorAppender.access=ERROR
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log4j.appender.ErrorAppender=org.apache.log4j.DailyRollingFileAppender
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log4j.appender.ErrorAppender.File=../logs/c.log
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log4j.appender.ErrorAppender.Append = true
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log4j.appender.ErrorAppender.threshold = ERROR
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log4j.appender.ErrorAppender.layout=org.apache.log4j.PatternLayout
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log4j.appender.ErrorAppender.layout.ConversionPattern=%d{MM-dd HH:mm:ss.SSS} %c %-5p - %m%n
pom.xml到这里就基本结束了,贴上一张log4j的日志打印图。
3.简单的登录验证拦截器
自定义一个登录验证拦截器LoginInterceptor,实现HandlerInterceptor接口
3.1 LoginInterceptor.java
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private static final Logger logger = LoggerFactory.getLogger(LoginInterceptor.class);
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//在目标方法执行前执行
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@Override
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public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
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System.err.println("------preHandle------");
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System.out.println("ContextPath" + request.getContextPath());
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System.out.println("getRequestURI" + request.getRequestURI());
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//获取session
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HttpSession session = request.getSession(true);
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//判断用户是否存在,不存在就跳转到登录页面
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if (session.getAttribute("username")==null){
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String uri = request.getRequestURI();
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System.out.println(uri);
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String url = request.getServerName()+":"+request.getServerPort()+request.getContextPath()+"/index";
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System.out.println(url);
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response.sendRedirect(request.getContextPath()+"/index");
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return false;
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}
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return true;
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}
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//在目标方法执行后执行,但在请求返回前,我们仍然可以对 ModelAndView进行修改
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@Override
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public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
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}
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// 在请求已经返回之后执行
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@Override
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public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
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}
3.2 登录配置类--LoginConfig.java
继承WebMvcConfigurerAdapter类,此类一定要记得加上@Configuration注解,否则无法生效
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public LoginConfig() {
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super();
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}
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@Override
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public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
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configurer.enable();
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}
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@Override
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public void addInterceptors(InterceptorRegistry registry) {
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//拦截规则:除了excludePathPatterns中地址,其他都拦截判断
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registry.addInterceptor(new LoginInterceptor()).addPathPatterns("/**").excludePathPatterns("/index");
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super.addInterceptors(registry);
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}
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@Override
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public void addResourceHandlers(ResourceHandlerRegistry registry) {
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registry.addResourceHandler("/static/**").addResourceLocations("classpath:/static/");
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registry.addResourceHandler("/templates/**").addResourceLocations("classpath:/templates/");
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super.addResourceHandlers(registry);
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}
4.结语
大概就是这样,中间漏了一部分内容,等有空闲时补上。新手上路,多多指教。