package com.java110.service.aop;
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import com.alibaba.fastjson.JSONObject;
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import com.java110.common.constant.CommonConstant;
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import com.java110.common.constant.ResponseConstant;
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import com.java110.common.exception.FilterException;
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import com.java110.core.context.IPageData;
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import com.java110.core.factory.PageDataFactory;
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import com.java110.common.util.Assert;
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import com.java110.core.factory.GenerateCodeFactory;
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import com.java110.common.util.StringUtil;
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import com.java110.core.context.PageData;
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import org.aspectj.lang.JoinPoint;
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import org.aspectj.lang.ProceedingJoinPoint;
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import org.aspectj.lang.annotation.*;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.springframework.stereotype.Component;
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import org.springframework.web.context.request.RequestContextHolder;
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import org.springframework.web.context.request.ServletRequestAttributes;
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import javax.servlet.http.Cookie;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import java.io.BufferedReader;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.InputStreamReader;
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import java.util.Map;
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/**
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* 数据初始化
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* Created by wuxw on 2018/5/2.
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*/
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@Aspect
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@Component
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public class PageProcessAspect {
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private final static Logger logger = LoggerFactory.getLogger(PageProcessAspect.class);
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@Pointcut("execution(public * com.java110..*.*Controller.*(..)) || execution(public * com.java110..*.*Rest.*(..))")
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public void dataProcess(){}
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/**
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* 初始化数据
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*
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* @param joinPoint
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* @throws Throwable
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*/
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@Before("dataProcess()")
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public void deBefore(JoinPoint joinPoint) throws Throwable {
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// 接收到请求，记录请求内容
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ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
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HttpServletRequest request = attributes.getRequest();
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IPageData pd = null;
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String reqData = "";
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String userId = "";
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String sessionId = request.getSession().getId();
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if("POST,PUT".contains(request.getMethod())){
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InputStream in = request.getInputStream();
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BufferedReader reader = new BufferedReader(new InputStreamReader(in));
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//reader.
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StringBuffer sb = new StringBuffer();
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String str = "";
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while ((str = reader.readLine()) != null) {
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sb.append(str);
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}
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reqData = sb.toString();
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}
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//对 get情况下的参数进行封装
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else{
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Map<String,String[]> params = request.getParameterMap();
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if(params != null && !params.isEmpty()) {
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JSONObject paramObj = new JSONObject();
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for(String key : params.keySet()) {
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if(params.get(key).length>0){
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String value = "";
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for(int paramIndex = 0 ; paramIndex < params.get(key).length;paramIndex++) {
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value = params.get(key)[paramIndex] + ",";
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}
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value = value.endsWith(",")?value.substring(0,value.length()-1):value;
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paramObj.put(key,value);
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}
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continue;
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}
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reqData = paramObj.toJSONString();
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}
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}
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// 获取 userId
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if(request.getAttribute("claims") != null && request.getAttribute("claims") instanceof Map){
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Map<String,String> userInfo = (Map<String,String>)request.getAttribute("claims");
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if(userInfo.containsKey(CommonConstant.LOGIN_USER_ID)){
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userId = userInfo.get(CommonConstant.LOGIN_USER_ID);
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}
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}
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// 获取组件名称 和方法名称
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String url = request.getRequestURL()!=null?request.getRequestURL().toString():"";
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String componentCode = "";
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String componentMethod = "";
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if(url.contains("callComponent")){ //组件处理
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String []urls = url.split("/");
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if(urls.length == 6){
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componentCode = urls[4];
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componentMethod = urls[5];
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}
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}else if(url.contains("flow")){ //流程处理
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String []urls = url.split("/");
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if(urls.length == 5){
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componentCode = urls[4];
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}
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}
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pd = PageData.newInstance().builder(userId,this.getToken(request),reqData,componentCode,componentMethod,url,sessionId);
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request.setAttribute(CommonConstant.CONTEXT_PAGE_DATA,pd);
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}
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@AfterReturning(returning = "ret", pointcut = "dataProcess()")
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public void doAfterReturning(Object ret) throws Throwable {
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// 处理完请求，返回内容
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}
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//后置异常通知
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@AfterThrowing("dataProcess()")
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public void throwException(JoinPoint jp){
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}
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//后置最终通知,final增强，不管是抛出异常或者正常退出都会执行
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@After("dataProcess()")
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public void after(JoinPoint jp) throws IOException {
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// 接收到请求，记录请求内容
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ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
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HttpServletRequest request = attributes.getRequest();
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PageData pd =request.getAttribute(CommonConstant.CONTEXT_PAGE_DATA) != null ?(PageData)request.getAttribute(CommonConstant.CONTEXT_PAGE_DATA):null ;
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//保存日志处理
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if(pd == null){
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return ;
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}
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//写cookies信息
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writeCookieInfo(pd,attributes);
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}
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//环绕通知,环绕增强，相当于MethodInterceptor
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@Around("dataProcess()")
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public Object around(ProceedingJoinPoint pjp) {
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try {
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Object o = pjp.proceed();
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return o;
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} catch (Throwable e) {
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e.printStackTrace();
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return null;
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}
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}
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/**
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* 获取TOKEN
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* @param request
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* @return
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*/
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private String getToken(HttpServletRequest request) throws FilterException {
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String token = "";
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if(request.getCookies() == null || request.getCookies().length == 0){
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return token;
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}
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for (Cookie cookie : request.getCookies()) {
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if (CommonConstant.COOKIE_AUTH_TOKEN.equals(cookie.getName())) {
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token = cookie.getValue();
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}
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}
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return token;
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}
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/**
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* 写cookie 信息
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* @param pd 页面封装信息
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* @param attributes
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* @throws IOException
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*/
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private void writeCookieInfo(IPageData pd,ServletRequestAttributes attributes) throws IOException {
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// 这里目前只写到组件级别，如果需要 写成方法级别
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if(!StringUtil.isNullOrNone(pd.getToken()) && "login".equals(pd.getComponentCode())) {
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HttpServletResponse response = attributes.getResponse();
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Cookie cookie = new Cookie(CommonConstant.COOKIE_AUTH_TOKEN, pd.getToken());
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cookie.setHttpOnly(true);
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cookie.setPath("/");
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response.addCookie(cookie);
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response.flushBuffer();
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}
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}
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}
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