在spring boot中,简单几步,使用spring AOP实现一个拦截器:
1、引入依赖:
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< dependency >
< groupId >org.springframework.boot</ groupId >
< artifactId >spring-boot-starter-aop</ artifactId >
</ dependency >
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< dependency >
< groupId >org.springframework.boot</ groupId >
< artifactId >spring-boot-starter-aop</ artifactId >
</ dependency >
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2、创建拦截器类(在该类中,定义了拦截规则:拦截com.xjj.web.controller包下面的所有类中,有@RequestMapping注解的方法。):
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/**
* 拦截器:记录用户操作日志,检查用户是否登录……
* @author XuJijun
*/
@Aspect
@Component
public class ControllerInterceptor {
private static final Logger logger = LoggerFactory.getLogger(ControllerInterceptor. class );
@Value (“${spring.profiles}”)
private String env;
/**
* 定义拦截规则:拦截com.xjj.web.controller包下面的所有类中,有@RequestMapping注解的方法。
*/
@Pointcut (“execution(* com.xjj.web.controller..*(..)) and @annotation (org.springframework.web.bind.annotation.RequestMapping)”)
public void controllerMethodPointcut(){}
/**
* 拦截器具体实现
* @param pjp
* @return JsonResult(被拦截方法的执行结果,或需要登录的错误提示。)
*/
@Around (“controllerMethodPointcut()”) //指定拦截器规则;也可以直接把“execution(* com.xjj………)”写进这里
public Object Interceptor(ProceedingJoinPoint pjp){
long beginTime = System.currentTimeMillis();
MethodSignature signature = (MethodSignature) pjp.getSignature();
Method method = signature.getMethod(); //获取被拦截的方法
String methodName = method.getName(); //获取被拦截的方法名
Set<Object> allParams = new LinkedHashSet<>(); //保存所有请求参数,用于输出到日志中
logger.info(”请求开始,方法:{}”, methodName);
Object result = null ;
Object[] args = pjp.getArgs();
for (Object arg : args){
//logger.debug(“arg: {}”, arg);
if (arg instanceof Map<?, ?>) {
//提取方法中的MAP参数,用于记录进日志中
@SuppressWarnings (“unchecked”)
Map<String, Object> map = (Map<String, Object>) arg;
allParams.add(map);
} else if (arg instanceof HttpServletRequest){
HttpServletRequest request = (HttpServletRequest) arg;
if (isLoginRequired(method)){
if (!isLogin(request)){
result = new JsonResult(ResultCode.NOT_LOGIN, “该操作需要登录!去登录吗?\n\n(不知道登录账号?请联系老许。)”, null );
}
}
//获取query string 或 posted form data参数
Map<String, String[]> paramMap = request.getParameterMap();
if (paramMap!= null && paramMap.size()> 0 ){
allParams.add(paramMap);
}
} else if (arg instanceof HttpServletResponse){
//do nothing…
} else {
//allParams.add(arg);
}
}
try {
if (result == null ){
// 一切正常的情况下,继续执行被拦截的方法
result = pjp.proceed();
}
} catch (Throwable e) {
logger.info(”exception: ”, e);
result = new JsonResult(ResultCode.EXCEPTION, “发生异常:”+e.getMessage());
}
if (result instanceof JsonResult){
long costMs = System.currentTimeMillis() - beginTime;
logger.info(”{}请求结束,耗时:{}ms”, methodName, costMs);
}
return result;
}
/**
* 判断一个方法是否需要登录
* @param method
* @return
*/
private boolean isLoginRequired(Method method){
if (!env.equals(“prod”)){ //只有生产环境才需要登录
return false ;
}
boolean result = true ;
if (method.isAnnotationPresent(Permission. class )){
result = method.getAnnotation(Permission. class ).loginReqired();
}
return result;
}
//判断是否已经登录
private boolean isLogin(HttpServletRequest request) {
return true ;
/*String token = XWebUtils.getCookieByName(request, WebConstants.CookieName.AdminToken);
if(“1”.equals(redisOperator.get(RedisConstants.Prefix.ADMIN_TOKEN+token))){
return true;
}else {
return false;
}*/
}
}
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/**
* 拦截器:记录用户操作日志,检查用户是否登录……
* @author XuJijun
*/
@Aspect
@Component
public class ControllerInterceptor {
private static final Logger logger = LoggerFactory.getLogger(ControllerInterceptor. class );
@Value ( "${spring.profiles}" )
private String env;
/**
* 定义拦截规则:拦截com.xjj.web.controller包下面的所有类中,有@RequestMapping注解的方法。
*/
@Pointcut ( "execution(* com.xjj.web.controller..*(..)) and @annotation(org.springframework.web.bind.annotation.RequestMapping)" )
public void controllerMethodPointcut(){}
/**
* 拦截器具体实现
* @param pjp
* @return JsonResult(被拦截方法的执行结果,或需要登录的错误提示。)
*/
@Around ( "controllerMethodPointcut()" ) //指定拦截器规则;也可以直接把“execution(* com.xjj.........)”写进这里
public Object Interceptor(ProceedingJoinPoint pjp){
long beginTime = System.currentTimeMillis();
MethodSignature signature = (MethodSignature) pjp.getSignature();
Method method = signature.getMethod(); //获取被拦截的方法
String methodName = method.getName(); //获取被拦截的方法名
Set<Object> allParams = new LinkedHashSet<>(); //保存所有请求参数,用于输出到日志中
logger.info( "请求开始,方法:{}" , methodName);
Object result = null ;
Object[] args = pjp.getArgs();
for (Object arg : args){
//logger.debug("arg: {}", arg);
if (arg instanceof Map<?, ?>) {
//提取方法中的MAP参数,用于记录进日志中
@SuppressWarnings ( "unchecked" )
Map<String, Object> map = (Map<String, Object>) arg;
allParams.add(map);
} else if (arg instanceof HttpServletRequest){
HttpServletRequest request = (HttpServletRequest) arg;
if (isLoginRequired(method)){
if (!isLogin(request)){
result = new JsonResult(ResultCode.NOT_LOGIN, "该操作需要登录!去登录吗?\n\n(不知道登录账号?请联系老许。)" , null );
}
}
//获取query string 或 posted form data参数
Map<String, String[]> paramMap = request.getParameterMap();
if (paramMap!= null && paramMap.size()> 0 ){
allParams.add(paramMap);
}
} else if (arg instanceof HttpServletResponse){
//do nothing...
} else {
//allParams.add(arg);
}
}
try {
if (result == null ){
// 一切正常的情况下,继续执行被拦截的方法
result = pjp.proceed();
}
} catch (Throwable e) {
logger.info( "exception: " , e);
result = new JsonResult(ResultCode.EXCEPTION, "发生异常:" +e.getMessage());
}
if (result instanceof JsonResult){
long costMs = System.currentTimeMillis() - beginTime;
logger.info( "{}请求结束,耗时:{}ms" , methodName, costMs);
}
return result;
}
/**
* 判断一个方法是否需要登录
* @param method
* @return
*/
private boolean isLoginRequired(Method method){
if (!env.equals( "prod" )){ //只有生产环境才需要登录
return false ;
}
boolean result = true ;
if (method.isAnnotationPresent(Permission. class )){
result = method.getAnnotation(Permission. class ).loginReqired();
}
return result;
}
//判断是否已经登录
private boolean isLogin(HttpServletRequest request) {
return true ;
/*String token = XWebUtils.getCookieByName(request, WebConstants.CookieName.AdminToken);
if("1".equals(redisOperator.get(RedisConstants.Prefix.ADMIN_TOKEN+token))){
return true;
}else {
return false;
}*/
}
}
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3、测试
浏览器中输入:http://localhost:8082/api/admin/login
测试结果:
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2016-07-26 11:58:12,057:INFO http-nio-8082-exec-1 (ControllerInterceptor.java:58) - 请求开始,方法:login
2016-07-26 11:58:12,061:INFO http-nio-8082-exec-1 (ControllerInterceptor.java:103) - login请求结束,耗时:8ms
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2016-07-26 11:58:12,057:INFO http-nio-8082-exec-1 (ControllerInterceptor.java:58) - 请求开始,方法:login
2016-07-26 11:58:12,061:INFO http-nio-8082-exec-1 (ControllerInterceptor.java:103) - login请求结束,耗时:8ms
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证明拦截器已经生效。
源代码参考:https://github.com/xujijun/my-spring-boot
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/zmken497300/article/details/53516764