jdb和arthas联合调试代码

喜欢ヅ旅行 2022-09-05 13:54 99阅读 0赞

jdb -connect com.sun.jdi.SocketAttach:hostname=192.168.3.102,port=5005   或  jdb -attach 192.168.3.102:5005 
    利用arthas中的jad找到想要debug的类然后反编译
    [arthas@31407]$ jad com.hanshow.wise.portal.center.aspect.CenterLoginValidateAspect
    比如部分代码如下
    				 public void before(HttpServletRequest request, Object obj) throws WiseException {
    /* 52*/         logger.info("[#requestUrl#]:{}\t[#requestJson#]:{}", (Object)request.getRequestURI(), (Object)JSONObject.fromObject((Object)obj).toString());
    /* 53*/         String requestUri = request.getRequestURI();
    /* 54*/         String contextPath = request.getContextPath();
    /* 55*/         String url = requestUri.substring(contextPath.length());
    /* 56*/         if (url.startsWith("/open/user/loginByLoginName") || url.startsWith("/open/user/loginByTicket") || url.startsWith("/open/user/loginByWorkCode") || url.startsWith("/login/user/logoutForCas") || url.startsWith("/common/getBase64") || url.startsWith("/focusmart/getCasUrl") || url.startsWith("/focusmart/casRedirect") || url.startsWith("/bi/") || url.startsWith("/open/deviceGoodsPr/getDeviceGoodsPrByDeviceCode") || url.startsWith("/open/getDeviceStatus") || url.startsWith("/open/getDeviceRateOfUtilization") || url.startsWith("/open/getDevceListForPage") || url.startsWith("/open/esl/getStoreGoodsByCode") || url.startsWith("/open/esl/getCustomizeStoreGoodsBySku") || url.startsWith("/coupon/getCouponInfoByStockIdH5") || url.startsWith("/coupon/sendCoupon")) {
    /* 73*/             return;
                    }
    /* 75*/         Object baseDTO = null;
    
    
    在full-class-path的第line-number行设置断点
    stop at full-class-path:line-number
    例如： stop at com.hanshow.wise.portal.center.aspect.CenterLoginValidateAspect:52 
    执行后当代码调用到此处会停到此处
    next 单步走
    locals 打印全部局部变量
    print <expr> 打印变量/表达式的值
    例如： print requestUri 可以看到变量值
    requestUri = "/market-portal-center/signal/listCreatedSignals"
    已完成的步骤: "线程=http-nio-8080-exec-4", com.hanshow.wise.portal.center.aspect.CenterLoginValidateAspect.before(), 行=55 bci=38
    
    执行locals得到所有变量
    
    http-nio-8080-exec-4[1] locals
    方法参数:
    request = instance of org.apache.catalina.connector.RequestFacade(id=105279)
    obj = instance of com.hanshow.wise.common.jo.BaseQUERY(id=106352)
    本地变量:
    requestUri = "/market-portal-center/signal/listCreatedSignals"
    contextPath = "/market-portal-center"
    
    
    cont 从断点处一直执行(如果没有下一个断点会执行完)
    
    clear 显示所有断点
    clear full-class-path:line-number 清除断点
    > clear
    断点集:
            断点com.hanshow.wise.portal.center.aspect.CenterLoginValidateAspect:52
    > clear com.hanshow.wise.portal.center.aspect.CenterLoginValidateAspect:52
    已删除: 断点com.hanshow.wise.portal.center.aspect.CenterLoginValidateAspect:52