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Experimental purpose Popularize the principle and application of wide byte injection, as well as the basic methods and processes of wide byte injection. Experimental environment Attack machine: tell the peach blossom not to open (1) Operating system: Windows10 (2) Installed applications: sqlmap,Burpsuite,FireFox browser plug-in Hackbar, FoxyPr ...

9 cases 9.1 requirements description The list of goods on the e-commerce platform is displayed. In addition to the basic information and description information of the goods, each list item also includes the store information to which the goods belong, as follows: The functions of this case are as follows: Add itemProduct paging queryC ...

Purpose of this chapter Popularize the application scenarios and conditions of delayed blind injection technology, be familiar with the usage of functions such as length(), Substr(), ascii(), sleep(), if(), and master the basic process of time-based blind injection. PS: the interview questions and answers are delayed without deep questions E ...

Join query in sql99 syntax Syntax: SELECT query list FROM table 1 alias [connection type] JOIN table 2 alias ON connection conditions [WHERE filter criteria] [GROUP BY] [HAVING filter criteria] [ORDER BY sort list] Connection type: inner connection: inner External connection: Left outer: left [outer] Right outer: right [outer] full ...

1. Introduction In the process of project development, when some data is written, if it already exists, it can be overwritten. This can prevent multiple repeated writes to the only key conflict and error reporting. Here are two examples of using saveOrUpdate in MyBatis configuration files <!-- Single data saving --> <insert id="saveO ...

1. Background Since the official version of rockdoc is available in the cloud environment, rockdoc has to be used as the real-time image of the company's own version, but it is not installed in the cloud environment. According to the release of StarRocks official website, ARM environment is supported in version 2.0, so it starts to scratch the ...

Hive installation, deployment and management Experimental environment Linux Ubuntu 16.04 prerequisite: 1) Java runtime environment deployment completed 2) Hadoop 3.0.0 single point deployment completed 3) MySQL database installation completed The above preconditions are ready for you. Experimental content Under the above preconditions, ...

1. Group query group by ， generally used in conjunction with aggregate functions, the found data is meaningful *Fields to query: 1. Grouping field itself 2. Aggregate function -- For example, I group by part number. For example, there are three departments, and then I calculate the average salary of each department. There should be thre ...

Level 1: specify the type of JDBC encapsulation Task description This task: encapsulate a JDBC tool class as required. Relevant knowledge In order to complete this task, you need to master the basic use of JDBC. Please refer to the previous training content Advanced features of Java - JDBC (Part 1). This chapter will encapsulate ...

brief introduction SQL injection means that the web application does not judge or filter the legitimacy of the user's input data. The attacker can add additional SQL statements at the end of the query statements defined in advance in the web application, and realize illegal operations without the knowledge of the administrator, so as to d ...