过滤器：
获取参数
interceptor拦截器：
获取注解
获取请求数据，拦截
拿到类、方法、参数对象类型
切面：
获取注解
请求及响应数据，获取和操作
拿到类、方法、参数（参数对象）
@Aspect
@Component
@Order(1)
public class AopTest {
private static final Logger logger = LoggerFactory.getLogger(AopTest.class);
@Pointcut("@annotation(aopTestAnnotation)")
public void annotationPointcut(AopTestAnnotation aopTestAnnotation) {
}
@Around("annotationPointcut(aopTestAnnotation)")
public Object aroundPointcut(ProceedingJoinPoint joinPoint, AopTestAnnotation aopTestAnnotation) throws Throwable {
logger.info("**************AopTest.before");
Object[] args = joinPoint.getArgs();
for (Object arg : args) {
logger.info("**************AopTest参数="+arg+" ");
ESBRenewRewardRequestVO vo = (ESBRenewRewardRequestVO)arg;
vo.setPolicyNo("9200200012343");//修改入参
}
//第二种参数获取方式
ServletRequestAttributes servletRequestAttributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
HttpServletRequest request = servletRequestAttributes.getRequest();
logger.info("**************AopTest.request:"+request.getParameter("userId"));//request无法对参数修改
logger.info("**************AopTest.annotation:"+aopTestAnnotation.value());
//第二种获取注解值的方式
logger.info("**************AopTest.annotation.切入方法名:"+joinPoint.getSignature().getName()+",切入类名："+joinPoint.getSignature().getDeclaringTypeName());
MethodSignature ms= (MethodSignature)joinPoint.getSignature();
AopTestAnnotation smaAnnotation = ms.getMethod().getAnnotation(AopTestAnnotation.class);
if(smaAnnotation!=null)
logger.info("**************AopTest.annotation2:"+smaAnnotation.value()+",签名signature："+ms+",返回AOP框架为目标对象生成的代理对象getThis同Target:"+joinPoint.getThis());
//第三种获取注解值的方式
Object target = joinPoint.getTarget();
java.lang.reflect.Method method = target.getClass().getMethod(ms.getName(), ms.getParameterTypes());//获取注解标注的方法
AopTestAnnotation annotation = method.getAnnotation(AopTestAnnotation.class);//通过方法获取注解
if(annotation!=null)
logger.info("**************AopTest.annotation3:"+smaAnnotation.value()+",目标对象target："+target);
Object obj = joinPoint.proceed();
ResultVO<ESBRenewRewardInfoVO> resultVO = (ResultVO<ESBRenewRewardInfoVO>)obj;
resultVO.getData().setOrderNo("10000012323213");//修改出参
logger.info("**************AopTest.after:"+resultVO);
return obj;
}
}
@Documented
@Target({ElementType.METHOD})
@Retention(RetentionPolicy.RUNTIME)
public @interface AopTestAnnotation {
String value() default "";
}
@Aspect
@Component
@Order(2)//order越大距离目标方法越近
public class AopTestTwo {
private static final Logger logger = LoggerFactory.getLogger(AopTestTwo.class);
@Pointcut("@annotation(AopTestAnnotationTwo)")
public void annotationPointcut() {
}
@Around("annotationPointcut()")
public Object aroundPointcut(ProceedingJoinPoint joinPoint) throws Throwable {
logger.info("@@@@@@@@@@@@@@@@@@@AopTestTwo.before");
Object obj = joinPoint.proceed();
logger.info("@@@@@@@@@@@@@@@@@@AopTestTwo.after");
return obj;
}
@Before("annotationPointcut()")
public void aroundPointcutBefore(JoinPoint joinPoint) throws Throwable {
logger.info("@@@@@@@@@@@@@@@@@@@AopTestTwo.aroundPointcutBefore:"+joinPoint.getArgs());
}
// @After("annotationPointcut()")
@AfterReturning(returning = "obj",pointcut="annotationPointcut()")
public void aroundPointcutAfter(JoinPoint joinPoint,Object obj) throws Throwable {
logger.info("@@@@@@@@@@@@@@@@@@@AopTestTwo.aroundPointcutAfter:"+obj);
}
}
@AopTestAnnotation("test000001")
@AopTestAnnotationTwo
@RequestMapping(value = "/insuranceSport")
@ResponseBody
public ResultVO<ESBRenewRewardInfoVO> test(ESBRenewRewardRequestVO request) {
logger.info("***************test:"+request);
ResultVO<ESBRenewRewardInfoVO> result = new ResultVO<ESBRenewRewardInfoVO>();
ESBRenewRewardInfoVO vo = new ESBRenewRewardInfoVO();
vo.setOrderNo("123456789");
result.setData(vo);
testService.myTest();
logger.info("***************test:"+result);
return result;
}
@Service
public class TestService {
private static final Logger logger = LoggerFactory.getLogger(TestService.class);
public void myTest(){
ServletRequestAttributes servletRequestAttributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
HttpServletRequest request = servletRequestAttributes.getRequest();
logger.info("**************TestService.myTest:"+request.getParameter("userId"));//request无法对参数修改
}
}
@Configuration
public class MyConfig extends WebMvcConfigurationSupport {
@Override
public void addInterceptors(InterceptorRegistry registry) {
// addPathPatterns("/**") 表示拦截所有的请求，
// excludePathPatterns("/login", "/register") 表示除了登陆与注册之外，因为登陆注册不需要登陆也可以访问
//.addPathPatterns("/**").excludePathPatterns("/login", "/register");
registry.addInterceptor(new MyInterceptor()).addPathPatterns("/**");///asd/**
}
}
public class MyInterceptor implements HandlerInterceptor {
//在请求处理之前进行调用（Controller方法调用之前
@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse httpServletResponse, Object o) throws Exception {
System.out.println("preHandle被调用");
Map map =(Map)request.getAttribute(HandlerMapping.URI_TEMPLATE_VARIABLES_ATTRIBUTE);
System.out.println(map);
if (o instanceof HandlerMethod) {
HandlerMethod handlerMethod = (HandlerMethod) o;
//在方法上寻找注解
AopTestAnnotationTwo permission = (AopTestAnnotationTwo) handlerMethod.getMethodAnnotation(AopTestAnnotationTwo.class);
if (permission != null) {
//获取注解中的值
String resourceKey = permission.value();
logger.info("#####################interceptor.注解:" + resourceKey);
}
Method method = handlerMethod.getMethod();
Object action = handlerMethod.getBean();
logger.info("#####################interceptor:方法名：" +method.getName()+",类名："+action);
Class[] paramTypes = method.getParameterTypes();
Parameter[] methodParameters= method.getParameters();
logger.info("#####################interceptor:"+methodParameters);
if (methodParameters.length != 0) {
Parameter methodParameter = methodParameters[0];
String parameterName = methodParameter.getName();
String parameterClass = methodParameter.getType().getCanonicalName();
String parameterVelue = request.getParameter(parameterName);
logger.info("#####################interceptor:方法名：" +method.getName()+" "+parameterName+"，参数对象类型:"+parameterClass+" "+parameterVelue);
}
}
Map<String, String[]> pars =request.getParameterMap();
for( Map.Entry<String,String[]> entry: pars.entrySet()){
String key = (String) entry.getKey();
String[] value = entry.getValue();
logger.info("#####################interceptor:"+key+" "+value[0]+" "+ request.getParameter(key));
}
if(1==1) {//map.get("name").equals("zhangsan")
return true; //如果false，停止流程，api被拦截
}else {
PrintWriter printWriter = httpServletResponse.getWriter();
printWriter.write("please login again!");
return false;
}
}
@Override
public void postHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, ModelAndView modelAndView) throws Exception {
System.out.println("postHandle被调用");
}
@Override
public void afterCompletion(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, Exception e) throws Exception {
System.out.println("afterCompletion被调用");
}
}
@Target({ ElementType.METHOD, ElementType.TYPE})
@Retention(RetentionPolicy.RUNTIME)
public @interface PermissionCheck {
/**
* 资源key
* */
String resourceKey();
}
某个接口使用该注解，切面中某些接口的特殊处理
@PermissionCheck(resourceKey="mykeyss")
@RequestMapping("/hello")
@ResponseBody
public String test( User user) {
@Bean
public FilterRegistrationBean indexEsgFilter() {
FilterRegistrationBean registration = new FilterRegistrationBean(new MyFilter());
registration.addUrlPatterns("/*"); //esg.properties别sg.rest.area
registration.setName("MyFilter");
registration.setOrder(1);
return registration;
}
public class MyFilter implements Filter {
private static final Logger logger = Logger.getLogger(MyFilter.class);
public void init(FilterConfig filterConfig) throws ServletException {
}
public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
HttpServletRequest request = (HttpServletRequest)servletRequest;
Map map = request.getParameterMap();
String name = request.getParameter("userId");
String method = request.getMethod();
String uri = request.getRequestURI();
logger.info("~~~~~~~~~~~~~~~~~~~~~~~~~~~~MyFilter:"+map+",参数："+name+",method.get/post:"+method+",uri:"+uri);
filterChain.doFilter(servletRequest,servletResponse);
}
@Override
public void destroy() {
}
}