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Content of this article Climb to the top 250 page of Douban movie. The fields include:Ranking, title, director, one sentence Description: some are blank, rating, number of evaluation, release time, release country, category Grab data storage scrapy introduction Scrapy crawler framework tutorial (1) -- getting started with scrapy Create projec ...

I haven't updated my blog for a long time. Recently, I met wechat payment for my project. I need to sort out the demand. I need to adjust wechat payment for an activity page!Application framework THINKPHP5.1 Note: for wechat payment, if it is the h5 page, you need to obtain the code in a silent login state, so as to ensure that the parameter o ...

This article starts with WeChat public's "Android development tour". Welcome to pay more attention to get more dry goods. Preface Navigation is a direct translation of navigation, which is one of Android Jetpack components, making single Activity application the preferred architecture. The jump of Fragment page in the application is h ...

1. Demand scenario Multiple events need to be judged jointly at the same time For example, when filling in the form, all information (name, age, occupation, etc.) in the form must be filled in before clicking the "submit" button 2. Function description Fill in the form as the joint judgment function display he ...

ContentProvider for interprocess communication First, introduce 1. The underlying implementation is Binder 2. In addition to the onCreate method running on the main thread, the other four methods are called back from the outside and run in the Binder thread pool. 3. To register ContentProvider, an attribute android:authorities ...

Be careful: Project: war and project: war expanded They are not the same. idea runs the project: war expanded   <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>4.3.10.RELEASE</version> ...

1.kerberos installation kerberos installation configuration and use: https://blog.csdn.net/qq_21383435/article/details/83625252 2. Generate keytab Execute the following command on cdh1 node, KDC server node: cd /var/kerberos/krb5kdc/ kadmin.local -q "addprinc -randkey hive/cdh-server1@YONG.COM " kadmin.local -q "addprinc - ...

Several execution steps inside Ajax Create XMLHttpRequest object (new XMLHttpRequest()) Set request header Connect to server (open()) Set callback (onreadyStateChange) Send data (send()) Get data in callback function JSONP script tags can be used to request resources across domains to solve cross domain problems. Detailed explanation can be s ...

I. flume installation 1. decompress tar -zxvf flume-ng-1.6.0-cdh5.15.0.tar.gz -C /opt/modules/ 2. Change name mv apache-flume-1.6.0-cdh5.15.0-bin/ flume-1.6.0-cdh5.15.0-bin/ 3. Configuration file: flume-env.sh export JAVA_HOME=/opt/modules/jdk1.8.0_151 4. Test success bin/flume-ng version //Result: Flume 1.6.0-cdh5. ...

I. system environment Centos7 Two, installation   $ yum install -y firewalld III. basic startup command   $ systemctl status firewalld # View state $ systemctl start firewalld # start-up $ systemctl stop firewalld #Close $ systemctl enable firewalld ...