整理文档，搜刮出一个springboot实现拦截器之验证登录示例，稍微整理精简一下做下分享。
添加jar包，这个jar包不是必须的，只是在拦截器里用到了，如果不用的话，完全可以不引入
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<dependency> <groupId>org.apache.commons</groupId> <artifactId>commons-lang3</artifactId> <version>3.5</version> </dependency> |
springboot默认为Tomcat，如果用jetty，还需要引入
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<dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <version>3.1.0</version> </dependency> |
1、以登录验证为例，首先创建个@Auth注解
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package com.demo.interceptor; import java.lang.annotation.*; /** * Created by huguoju on 2016/12/30. * 在类或方法上添加@Auth就验证登录 */@Target({ElementType.TYPE, ElementType.METHOD}) @Retention(RetentionPolicy.RUNTIME) @Documentedpublic @interface Auth { } |
2、创建一个Constants，在拦截器里用
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package com.demo.util; /** * Created by huguoju on 2016/12/30. */public interface Constants { int MAX_FILE_UPLOAD_SIZE = 5242880; String MOBILE_NUMBER_SESSION_KEY = "sessionMobileNumber"; String USER_CODE_SESSION_KEY = "userCode"; String SESSION_KEY = "sessionId"; } |
3、创建一个SessionData，用于保存在session中的字段
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package com.demo.model; import lombok.Data; /** * Created by huguoju on 2016/12/30. */@Datapublic class SessionData { private Integer userCode; private String mobileNumber; } |
4、实现登录拦截实现
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package com.demo.interceptor; import com.demo.model.SessionData; import com.demo.util.RedisUtil; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Component; import org.springframework.web.method.HandlerMethod; import org.springframework.web.servlet.handler.HandlerInterceptorAdapter; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.lang.reflect.Method; import static com.demo.util.Constants.MOBILE_NUMBER_SESSION_KEY; import static com.demo.util.Constants.SESSION_KEY; import static com.demo.util.Constants.USER_CODE_SESSION_KEY; /** * Created by huguoju on 2016/12/30. */@Componentpublic class LoginInterceptor extends HandlerInterceptorAdapter { @Autowired private RedisUtil redisUtils; private final static String SESSION_KEY_PREFIX = "session:"; public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception { if (!handler.getClass().isAssignableFrom(HandlerMethod.class)) { return true; } handlerSession(request); final HandlerMethod handlerMethod = (HandlerMethod) handler; final Method method = handlerMethod.getMethod(); final Class<?> clazz = method.getDeclaringClass(); if (clazz.isAnnotationPresent(Auth.class) || method.isAnnotationPresent(Auth.class)) { if(request.getAttribute(USER_CODE_SESSION_KEY) == null){ throw new Exception(); }else{ return true; } } return true; } public void handlerSession(HttpServletRequest request) { String sessionId = request.getHeader(SESSION_KEY); if(org.apache.commons.lang3.StringUtils.isBlank(sessionId)){ sessionId=(String) request.getSession().getAttribute(SESSION_KEY); } if (org.apache.commons.lang3.StringUtils.isNotBlank(sessionId)) { SessionData model = (SessionData) redisUtils.get(SESSION_KEY_PREFIX+sessionId); if (model == null) { return ; } request.setAttribute(SESSION_KEY,sessionId); Integer userCode = model.getUserCode(); if (userCode != null) { request.setAttribute(USER_CODE_SESSION_KEY, Long.valueOf(userCode)); } String mobile = model.getMobileNumber(); if (mobile != null) { request.setAttribute(MOBILE_NUMBER_SESSION_KEY, mobile); } } return ; } } |
5、配置拦截器
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package com.demo.interceptor; import org.hibernate.validator.HibernateValidator; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.context.MessageSource; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.ComponentScan; import org.springframework.context.annotation.Configuration; import org.springframework.context.annotation.PropertySource; import org.springframework.context.support.PropertySourcesPlaceholderConfigurer; import org.springframework.context.support.ReloadableResourceBundleMessageSource; import org.springframework.validation.Validator; import org.springframework.validation.beanvalidation.LocalValidatorFactoryBean; import org.springframework.validation.beanvalidation.MethodValidationPostProcessor; import org.springframework.web.servlet.ViewResolver; import org.springframework.web.servlet.config.annotation.*; import org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping; import org.springframework.web.servlet.view.InternalResourceViewResolver; /** * Created by huguoju on 2016/12/30. */@Configuration@EnableWebMvc@ComponentScan(basePackages = "com.demo.controller") @PropertySource(value = "classpath:application.properties", ignoreResourceNotFound = true,encoding = "UTF-8") public class MvcConfig extends WebMvcConfigurerAdapter { private static final Logger logger = LoggerFactory.getLogger(MvcConfig.class); @Autowired LoginInterceptor loginInterceptor; /** * <p> * 视图处理器 * </p> * * @return */ @Bean public ViewResolver viewResolver() { logger.info("ViewResolver"); InternalResourceViewResolver viewResolver = new InternalResourceViewResolver(); viewResolver.setPrefix("/WEB-INF/jsp/"); viewResolver.setSuffix(".jsp"); return viewResolver; } /** * 拦截器配置 * @param registry */ @Override public void addInterceptors(InterceptorRegistry registry) { // 注册监控拦截器 registry.addInterceptor(loginInterceptor) .addPathPatterns("/**") .excludePathPatterns("/configuration/ui"); } @Override public void addCorsMappings(CorsRegistry registry) { registry.addMapping("/**") .allowedOrigins("*") .allowedHeaders("*/*") .allowedMethods("*") .maxAge(120); } /** * 资源处理器 * @param registry */ @Override public void addResourceHandlers(ResourceHandlerRegistry registry) { logger.info("addResourceHandlers"); registry.addResourceHandler("/swagger-ui.html") .addResourceLocations("classpath:/META-INF/resources/"); registry.addResourceHandler("/webjars/**") .addResourceLocations("classpath:/META-INF/resources/webjars/"); } } |
以上就完成了，测试时可以在LoginInterceptor里打断点，然后在controller上或者方法上添加@Auth注解，
controller上添加以后这个controller里所有请求都验证登录，在方法里添加只有请求这个方法时验证
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@Auth@RestControllerpublic class TestController { } |
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。
原文链接：http://blog.csdn.net/u011493599/article/details/53942757
