SANSORM framework advantage analysis: Provide lightweight ORM for the Java class library

Sansorm is a lightweight ORM (object relationship mapping) framework for the Java class library. It has the following advantages: 1. Simple and easy to use: The Sansorm framework provides a simple and intuitive API, so that developers can quickly use and use the framework.It does not depend on complex configuration files, and only needs to achieve the mapping relationship between the object and the database table through simple annotations. 2. Lightweight: The SANSORM framework adopts a streamlined design without too much dependency, so it does not take up too much system resources, making the application operate more efficiently. 3. High performance: SANSORM framework improves performance by optimizing SQL queries and reducing the number of database access times.It uses pre -compiled statements and batch insertions to reduce the load of the database, thereby achieving faster data access speed. 4. Powerful query function: The SANSORM framework provides rich query functions, including condition query, sorting, paging, etc.Developers can generate complex SQL query statements through simple API calls, which improves development efficiency. 5. Support transaction management: SANSORM framework supports transaction management, developers can easily use transactions to ensure the consistency and integrity of data.It provides simple transaction annotations, and developers only need to add annotations to the way of transaction operation. Example code: ```java @Table(name = "users") public class User { @Column(name = "id", primaryKey = true) private int id; @Column(name = "name") private String name; // Getters and setters } public class UserRepository { public List<User> getAllUsers() { return SansOrm.select(User.class).list(); } public User getUserById(int id) { return SansOrm.select(User.class).where("id", id).first(); } public void saveUser(User user) { SansOrm.insert(user); } public void updateUser(User user) { SansOrm.update(user); } public void deleteUser(User user) { SansOrm.delete(user); } } ``` The above code demonstrates the mapping relationship between the physical class and the database table in the SANSORM framework, and shows how to perform basic inquiries and operations.Using the SANSORM framework, developers can easily realize the relationship between the management object and the database, and improve the development efficiency and application performance.

Use the sansorm framework to simplify the database integration of the Java class library

Use the sansorm framework to simplify the database integration of the Java class library introduce: When developing Java applications, database integration is a very common and important task.Traditional methods usually need to use tedious JDBC APIs or complex ORM class libraries, which not only requires a lot of code writing, but also prone to errors.To simplify this process, the Sansorm framework came into being.Sansorm is a lightweight Java class library, which aims to simplify the integration between Java applications and databases. The SANSORM framework provides a simple API, enabling developers to perform common database operations more easily, such as inserting, updating, deleting and querying data.It uses the JDBC API at the bottom, but it is simpler and intuitive in use.By using Sansorm, developers can save a lot of development time and reduce the probability of error in the code. Example: The following is a simple example of using the sansorm framework for database integration: 1. Configure database connection: ```java SansOrm.databaseConfiguration() .setJdbcUrl("jdbc:mysql://localhost:3306/mydatabase") .setUsername("username") .setPassword("password") .configure(); ``` In this example, we use the `databaseconfiguration () method provided by Sansorm to configure the database connection.Here we use the MySQL database and provide URL, username and password connecting URL, username and password. 2. Create a physical class: ```java @Table(name = "users") public class User { @Id @Column(name = "id") private int id; @Column(name = "name") private String name; @Column(name = "email") private String email; // omit the constructor and getter/setter method } ``` In this example, we created a physical class called `user`, and used the annotation to configure the table name and list name.`@ID` Note indicates that this is a primary key column. 3. Insert data: ```java User user = new User(); user.setId(1); user.setName ("Zhang San"); user.setEmail("zhangsan@example.com"); SansOrm.insert(user); ``` In this example, we created a `user` object and set up related attributes.We then insert the object into the database with the method of sansorm's `INSERT ()` method. 4. Query data: ```java List<User> users = SansOrm.select(User.class) .where("id", "=", 1) .execute(); ``` In this example, we use sansorm's `select ()` method to query the data of the `user` table, and specify the query conditions through the method of` `)`.Then, we use the `Execute ()` method to execute the query and save the results in the `users` list. Summarize: By using the SANSORM framework, we can simplify the database integration of the Java library.It provides simple API and makes full use of the JDBC API function.By using SANSORM, developers can reduce the amount of code and improve development efficiency.If you are looking for a simple and powerful way to integrate databases into your Java application, Sansorm is a good choice.

Understand the sansorm framework: simplify the ORM development in the Java class library

Understand the SANSORM framework: simplify the ORM development in the Java class library Introduction: Sansorm is an open source Java class library, which aims to simplify ORM (object relationship mapping) development process.ORM is a technology that connects a relationship database to object -oriented programming language. It allows developers to use object -oriented methods to operate databases. The Sansorm framework provides a simple and powerful way to perform basic ORM operations, thereby reducing the workload of developers at database access layers.It uses a lightweight design concept, so that developers using this framework can quickly get started and concentrate on solving more important problems. characteristic: 1. Simple and easy to use: The Sansorm framework provides a simple API, allowing developers to easily perform database operations, such as inserting, updating, deleting and querying. 2. High performance: The Sansorm framework optimizes the database operation, provides high -performance query and update functions, and also supports the use of database connection pools. 3. Zero Configuration: The Sansorm framework uses the method of annotation driver. It does not require tedious configuration files to reduce the workload of developers. 4. Support multiple databases: SANSORM framework supports a variety of common databases, such as MySQL, Oracle, Postgresql, etc.Developers can choose the right database according to their needs. Example code: Here are a Java code example using the Sansorm framework for data operation: ```java import com.sansorm.SansOrm; import com.sansorm.annotations.Entity; import com.sansorm.annotations.Id; import com.sansorm.annotations.Table; @Entity @Table(name = "students") public class Student { @Id private int id; private String name; private int age; // omit the creation function and getter/setter method public static void main(String[] args) { Sansorm.init (); // initialize the sansorm framework // Create a Student object Student Student = New Student (1, "Zhang San", 20); // Insert data to the database SansOrm.insert(student); // Query data Student queriedStudent = SansOrm.selectById(Student.class, 1); System.out.println (queriedStudent.getName ()); // Output: "Zhang San" // update data queriedStudent.setAge(21); SansOrm.update(queriedStudent); // delete data SansOrm.delete(queriedStudent); Sansorm.shutdown (); // Close the sansorm framework } } ``` Summarize: The SANSORM framework is a simple and easy -to -use, high -performance Java Orm framework, which aims to simplify the development of database access layers.It provides a simple API, supports a variety of common databases, and configures the method of annotation drive, so that developers can focus on the realization of business logic.If you are looking for a solution to simplify the ORM development process, the Sansorm framework is worth trying.

Use the SANSORM framework to simplify the data in the Java class library to endure

Use the SANSORM framework to simplify the data in the Java class library to endure introduce: In Java development, data persistence is a very important concept.Traditional methods involve many tedious steps, such as creating database connections, writing SQL statements, processing results sets, and so on.To simplify this process and improve development efficiency, we can use the Sansorm framework to simplify the durability of data in the Java library. Sansorm is a lightweight Java persistence framework, which provides a simple and convenient way for data persistence.Using the SANSORM framework, we can define the physical class through annotations and perform database operations through simple APIs. step: The following will introduce how to use the Sansorm framework to simplify the durable data in the Java class library. 1. Introduction dependencies: First of all, you need to add the Sansorm framework to the dependence of the project.The following dependencies can be added to the configuration file of Maven or Gradle: ```java <!-- Maven --> <dependency> <groupId>com.github.marschall</groupId> <artifactId>sansOrm</artifactId> <version>3.2.0</version> </dependency> // Gradle implementation 'com.github.marschall:sansOrm:3.2.0' ``` 2. Create a physical class: Using the SANSORM framework, we can use the annotation to identify the mapping relationship of the physical class and the attribute.For example, we create a physical class called User: ```java @Table(name = "users") public class User { @Id @Column(name = "id") private Long id; @Column(name = "username") private String username; @Column(name = "password") private String password; // omit Getter and Setter } ``` In the above example, the@Table annotation identifies the data table name corresponding to the physical class,@ID annotation identifies the main key field, and the@column annotation identifies ordinary fields. 3. Perform database operation: Using the Sansorm framework, we can perform database operations through simple APIs.The following are several commonly used examples: - Query data: ```java List<User> users = SansOrm.select(User.class).where("username = ?", "admin").execute(); ``` -Stch -in data: ```java User user = new User(); user.setUsername("john"); user.setPassword("123456"); SansOrm.insert(user); ``` - update data: ```java User user = SansOrm.selectById(User.class, 1L); user.setUsername("new_username"); SansOrm.update(user); ``` - delete data: ```java User user = SansOrm.selectById(User.class, 1L); SansOrm.delete(user); ``` Through the above examples, we can see that using the Sansorm framework to simplify the duration of data in the Java class library is very convenient.It provides a simple and easy -to -use API, and can define the mapping relationship between the physical class and the attributes through annotations, avoiding the complicated SQL statement writing and results set processing. Summarize: This article introduces how to use the Sansorm framework to simplify the durable data in the Java class library.By using the SANSORM framework, we can greatly reduce the amount of code for writing and processing database operations and improve development efficiency.I hope this article can help everyone.

SANSORM framework: Provide efficient database operations for Java class libraries

SANSORM framework: Provide efficient database operations for Java class libraries Introduction: Sansorm is an efficient database operation framework for the development of Java applications.It provides a simple and easy -to -use API, allowing developers to easily perform database operations in Java applications.The SANSORM framework follows the design principle of lightweight, does not require complex configuration, and has high performance and flexibility. Features: 1. Simple and easy to use: The Sansorm framework provides a simple and intuitive API, enabling developers to easily perform database operations.Whether it is inserting, updating, or querying data, only a few rows of simple code can be completed. 2. High performance: SANSORM framework provides excellent performance by optimizing the underlying database access operation.It uses some advanced technologies, such as batch operations and connecting pool management to minimize the delay and expenses of database access. 3. Lightweight: The design of the SANSORM framework is very lightweight and does not require complex configuration.It only depends on the Java standard library and does not need an additional third -party library or plug -in.This makes the deployment and use of the SANSORM framework very simple and fast. 4. Flexibility: The Sansorm framework provides flexible configuration options to meet the needs of different applications.Developers can adjust various parameters based on specific conditions, such as database connections, transaction management, and cache settings. Example code: Below is an example code using the Sansorm framework for database operations: ```java import com.github.ansonliao.sansOrm.SansOrm; import com.github.ansonliao.sansOrm.annotations.Column; import com.github.ansonliao.sansOrm.annotations.Entity; import com.github.ansonliao.sansOrm.annotations.Id; import com.github.ansonliao.sansOrm.annotations.Table; @Entity @Table(name = "user") public class User { @Id @Column(name = "id") private int id; @Column(name = "name") private String name; @Column(name = "age") private int age; // omit the getter and setter method // Construction method // Tostring method } public class Main { public static void main(String[] args) { SansOrm sansOrm = SansOrm.getInstance(); // Create a database table sansOrm.create(User.class); // Insert data User user = new User(); user.setId(1); user.setName("Tom"); user.setAge(20); sansOrm.insert(user); // Query data User queryUser = sansOrm.select(User.class).where("name", "Tom").execute(); System.out.println(queryUser.toString()); // update data queryUser.setAge(21); sansOrm.update(queryUser); // delete data sansOrm.delete(User.class).where("name", "Tom").execute(); } } ``` in conclusion: The SANSORM framework is an efficient and easy -to -use database operation framework, which aims to provide convenient database operation tools for Java application developers.By optimizing the underlying database access operation, the SANSORM framework can provide excellent performance and flexibility.Whether it is new tables, insert data, query data or update data, developers can easily use the Sansorm framework to complete the operation.

Sansorm Framework: ORM essential tools in the Java class library

Sansorm Framework: ORM essential tools in the Java class library Overview: In today's software development, data persistence is a very critical aspect.Object -relationship mapping (ORM) is a popular technology that can map the object model and database model, simplify database operations, and improve development efficiency.The Sansorm framework is an open source Java class library that provides a simple, lightweight ORM solution that can help developers more easily conduct database access. Features of sansorm framework: 1. Simple and easy to use: The design of the Sansorm framework is simple and clear, and the API is easy to understand and use.Developers only need to configure some simple annotations and parameters to achieve mapping between objects and database tables. 2. Lightweight: The code of the SANSORM framework is small and does not depend on other third -party libraries. Therefore, it can be easily integrated into existing projects without increasing additional complexity and burden. 3. High -efficiency performance: The Sansorm framework uses some optimization techniques, such as batch operations and cache mechanisms to improve the performance of database access.It also supports lazy loading, which can only obtain data from the database when needed to reduce unnecessary IO operations. 4. Multi -data library support: The SANSORM framework provides support for a variety of databases, including MySQL, Oracle, SQL Server, etc.Developers can choose the right database according to their needs, and can easily switch the database without modifying the code. Example code: The following is a simple example that shows how to use the Sansorm framework for database operations: First, you need to add the SANSORM framework to the Maven configuration file: ```xml <dependencies> <dependency> <groupId>org.sansorm</groupId> <artifactId>sansorm</artifactId> <version>1.0.0</version> </dependency> </dependencies> ``` Then, create a Java class to represent a physical object and the corresponding database table: ```java @Table(name = "users") public class User { @Id @Column(name = "id") private int id; @Column(name = "name") private String name; // Getter and setter methods } ``` Next, create a table called "Users" in the database and insert some test data. Finally, write a Java class containing the main method to demonstrate how to use the Sansorm framework for database operations: ```java public class Main { public static void main(String[] args) { DataSource DataSource = ...; // Initialized data source SansOrm sansOrm = new SansOrm(dataSource); List<User> users = sansOrm.findAll(User.class); for (User user : users) { System.out.println(user.getName()); } } } ``` By calling Sansorm's Findall method, we can easily obtain all user data from the database and print them out. in conclusion: The Sansorm framework is a powerful and easy -to -use ORM tool. It provides a simple and efficient way to achieve database access for Java developers.Whether it is a small project or a large application, the Sansorm framework is a good choice.Its simplicity, reliability and scalability make it one of the necessary ORM tools in the Java class library.

SANSORM Framework Application Guide: Implementing fast database operations in the Java class library

SANSORM framework application guide: realize fast database operations in the Java class library Overview With the increase of database operation requirements, it is essential to quickly and simply interacting with the database.Sansorm is a lightweight Java class library, which aims to simplify database operations and provide convenient and flexible ORM solutions.This article will introduce how to use the Sansorm framework to achieve fast database operations in Java. 1. Introduce Sansorm framework First, the Sansorm framework and its related dependencies need to be introduced.You can add the following dependencies to the pom.xml file of the project: ```xml <dependency> <groupId>com.github.palantir.sansorm</groupId> <artifactId>sansorm</artifactId> <version>1.2.2</version> </dependency> ``` Second, define the physical class Before using sansorm for database operations, the corresponding physical class needs to be defined.Each entity class corresponds to a table in the database and a column in the table in each field.The following is a definition of a sample physical class: ```java import com.github.palantir.sansorm.annotations.Column; import com.github.palantir.sansorm.annotations.Id; import com.github.palantir.sansorm.annotations.Table; @Table(name = "user") public class User { @Id @Column(name = "id") private int id; @Column(name = "name") private String name; // Other fields and corresponding getter/setter methods omitted } ``` In the physical class, the annotation provided by Sansorm specifies the mapping relationship between the physical class and the database table.@Table annotations are used to specify the name of the table, and@column annotations are used to specify the name of the column. 3. Database operation Sansorm provides a set of simple APIs to perform database operations, including insertion, update, delete and query operations. 1. Insert data The following is a sample code that inserted data inserted by sansorm: ```java import com.github.palantir.sansorm.SansOrm; public class UserDao { public void insertUser(User user) { SansOrm.insert(user); } } ``` By calling Sansorm's INSERT method and passing into the object to be inserted, you can insert data to the database. 2. Update data The following is a sample code to update the data with sansorm: ```java import com.github.palantir.sansorm.SansOrm; public class UserDao { public void updateUser(User user) { SansOrm.update(user); } } ``` By calling Sansorm's update method and passing into the object to be updated, the data in the database can be updated. 3. Delete data The following is an example code that uses Sansorm to delete data: ```java import com.github.palantir.sansorm.SansOrm; public class UserDao { public void deleteUser(User user) { SansOrm.delete(user); } } ``` By calling the DELETE method of Sansorm and passing into the object to be deleted, the data in the database can be deleted. 4. Query data The following is a sample code using sansorm to query data: ```java import com.github.palantir.sansorm.SansOrm; public class UserDao { public List<User> getAllUsers() { return SansOrm.getAll(User.class); } public User getUserById(int id) { return SansOrm.get(User.class, id); } } ``` By calling the Sansorm's getall method, you can obtain all the User objects in the database; by calling the GET method of Sansorm, and passing into the physical class and primary key value to be queried, you can obtain the corresponding user object in the database. Summarize By introducing the Sansorm framework, and according to the above steps, define the physical class and the API provided by using Sansorm, we can simplify the database operation in the Java library.The SANSORM framework provides a convenient and flexible ORM solution, making the database operation faster and simpler. It is hoped that this article will help to achieve fast database operations using the SANSORM framework in the Java class library.

The core technology of the HTML parser JAR framework in the Java class library

The core technology of the HTML parser JAR framework in the Java class library HTML parser is one of the very important components in the development of Java, which can help us effectively analyze and manipulate HTML documents.The core technology of the HTML parser is to convert the HTML document into a tree structure composed of node objects through all nodes and node attributes of HTML documents, so that we can operate and extract the documents. In the Java class library, there are many excellent HTML parser JAR frameworks to choose from, such as JSOUP, HTMLCLEANER, and NEKOHTML.They all provide good functions and performance, suitable for different application scenarios. The following will take JSOUP as an example to introduce the core technology of the HTML parser JAR framework. At the same time, it provides some Java code example: 1. Import jsoup library First of all, you need to download the JSOUP library and import it into the project.You can download the latest version of the JAR package from JSOUP's official website (https://jsoup.org/) and add it to the project path. 2. Analyze the HTML document Using JSOUP, we can analyze the HTML document through the following code: ```java import org.jsoup.Jsoup; import org.jsoup.nodes.Document; import org.jsoup.nodes.Element; import org.jsoup.select.Elements; public class HtmlParserExample { public static void main(String[] args) { String html = "<html><body><div><h1>Title</h1><p>Content</p></div></body></html>"; Document document = Jsoup.parse(html); Element body = document.body(); Elements divs = body.select("div"); for (Element div : divs) { Element h1 = div.selectFirst("h1"); String title = h1.text(); Element p = div.selectFirst("p"); String content = p.text(); System.out.println("Title: " + title); System.out.println("Content: " + content); } } } ``` In the above example, we created a string containing HTML marked and using JSOUP's `PARSE ()" method to analyze it as an `DOCUMENT` object.Then we can use the method of `select () and` selectfired () `to select and extract specific elements in the document. 3. Manipulate HTML document In addition to analyzing HTML documents, HTML parser can also help us manipulate documents, such as adding, modifying or deleting elements.The following is a simple example. It demonstrates how to add a new `<p>` `element to the HTML document: ```java import org.jsoup.Jsoup; import org.jsoup.nodes.Document; import org.jsoup.nodes.Element; public class HtmlManipulationExample { public static void main(String[] args) { String html = "<html><body><div><h1>Title</h1><p>Content</p></div></body></html>"; Document document = Jsoup.parse(html); Element body = document.body(); Element div = body.selectFirst("div"); Element newParagraph = new Element("p"); newParagraph.text("New paragraph"); div.appendChild(newParagraph); System.out.println(document); } } ``` In the above example, we first use JSOUP to resolve HTML documents.Then, by selecting and operating the elements in the document, we use the method of adding a new paragraph element with the method of `APPENDCHILD ()`, and finally print the entire document. The HTML parser JAR framework provides powerful and easy to use tools to help us handle HTML documents.Whether it is parsing HTML document or manipulating HTML documents, using the HTML parser can greatly simplify our development work and improve efficiency.The above examples are only to demonstrate the core technology. In practical applications, more complex operations and processing can be performed according to the needs.

Explore the working principle of the HTML parser JAR framework in the Java class library

HTML parser is a tool for parsing HTML documents. It can analyze HTML documents into structured data, which is convenient for the program to process and analyze the HTML document.In the Java class library, there are many excellent HTML parser JAR frameworks, such as JSOUP, HTMLPARSER, etc. They all use different parsing algorithms and APIs, but their working principles are generally the same. The working principle of the html parser is as follows: 1. First of all, the HTML parser needs to load the HTML document to the memory. You can obtain the HTML source code through network requests and file reading, and save it in a string or input stream. 2. Then, the HTML parser will analyze the HTML source code by character in accordance with the grammatical rules marked by HTML.During the analysis process, the parser will generate the corresponding data structure according to the label type, such as labels, attributes, text content, etc. to represent the structure and content of the HTML document.Generally, the parser uses some data structures, such as trees, nodes, etc. to indicate the structure of the HTML document. 3. In the process of parsing, the HTML parser will identify various HTML marks and adopt corresponding processing logic according to the different types of mark type.For example, for the HTML label, the parser will analyze its label name, attributes, sub -nodes and other information, and build it into the corresponding data structure.For text content, the parser will save it in a specific data structure. 4. During the parsing process, the HTML parser will also handle some special circumstances, such as automatic correction of HTML syntax errors, handling nested labels, and rotating characters.The parser will convert the HTML document as much as possible into the correct structured data so that the program can accurately process these data. 5. Finally, the HTML parser will return the data structure obtained by the parsing to the caller, and the caller can obtain and operate these structured data through the API.Generally, the parser provides some commonly used APIs, such as the content of the specific label, traversing document tree, etc., so as to facilitate the program to further process and analyze the HTML document. Take JSOUP as an example to give a simple Java code example to demonstrate how to use JSOUP to resolve HTML documents: ```java import org.jsoup.Jsoup; import org.jsoup.nodes.Document; import org.jsoup.nodes.Element; import org.jsoup.select.Elements; import java.io.IOException; public class HtmlParserExample { public static void main(String[] args) { try { // Obtain HTML documents through the jsoup.connect method Document document = Jsoup.connect("https://example.com/").get(); // Get the page title String title = document.title(); System.out.println ("Title:" + Title); // Get the link of all A tags Elements links = document.select("a[href]"); for (Element link : links) { System.out.println ("Link:" + Link.attr ("href"); } } catch (IOException e) { e.printStackTrace(); } } } ``` The above code uses the JSOUP framework to analyze a webpage and obtain the title of the page and the link of all A tags.First, obtain the Document object corresponding to the HTML document through the JSOUP.CONNECT method, and then obtain the required data through the method of the Document object. In summary, the working principle of the HTML parser JAR framework in the JAVA class library is to provide the API to make the API allow the program to easily process and analyze the HTML document by resolving the HTML document as a structured data.Among them, the parser will analyze the HTML document according to the grammatical rules marked by the HTML, and generate the corresponding data structure to represent the structure and content of the HTML document.By using the HTML parser, we can easily handle and analyze the HTML document in the Java program.

The implementation principle of the HTML parser JAR framework in the Java class library

The implementation principle of the HTML parser JAR framework in the Java class library Overview: HTML parser is a very useful tool to resolve HTML documents and provide access to the document structure and content.The HTML parser JAR framework is a Java class library that provides the function of analyzing HTML documents and processing document elements.This article will introduce the implementation principle of the HTML parser JAR framework and provide some Java code examples to demonstrate how to use the framework. Implementation principle: The implementation principle of the HTML parser JAR framework can be divided into the following key steps: 1. Patriotic initialization: The HTML parser JAR framework initializes the necessary configuration and data structure before parsing.This includes preparing the context object of the parser, the options and parameters of setting the parser, and the creation of the data structure for storing the analytic results. 2. Load HTML documents: The HTML parser JAR framework will load the HTML document to be parsed.This can be implemented by reading files from the file system, downloading the HTML page from the Internet, or parsing HTML text from the string to the realization.After loading the HTML document, the framework will be converted into the form of a document tree to facilitate subsequent analysis. 3. Analysis document: The parser will scan each node in the document tree in order and perform the corresponding processing logic.The parser will track the currently processed nodes, and perform specific operations according to the type and attributes of the node.For the HTML parser, possible operations include the label name, attribute value, text content and other related information of the node. 4. Treat nodes: For each node, the parser will perform the corresponding processing logic.This may include calling the callback function provided by the user, saving node information to the data structure or performing other custom behaviors.The logic of the processing node depends on the specific implementation of the parser and the user's needs. 5. Complete analysis: When the parser processs all nodes, the parsing process will be completed.At this time, the user can obtain the results of the parser, the data structure generated by the parsing process, or perform any follow -up operations. Example code: Here are a simple example of using HTML parser JAR framework to analyze HTML documents: ```java import org.htmlparser.Parser; import org.htmlparser.util.NodeList; import org.htmlparser.util.ParserUtils; import org.htmlparser.util.ParserException; public class HtmlParserExample { public static void main(String[] args) { try { // 1. Create a parser object Parser parser = new Parser(); // 2. Specify the html document to be parsed parser.setURL("http://www.example.com"); // 3. Analyze the html document and get the document tree NodeList nodeList = parser.parse(null); // 4. Treat the nodes in the document tree ParserUtils.traverseNodes(nodeList, node -> { // Treatment of specific node logic System.out.println("Node: " + node); return true; }); } catch (ParserException e) { e.printStackTrace(); } } } ``` The above example code demonstrates how to use the HTML parser jar framework to resolve the specified URL HTML document and process the node in the document tree.Users can write custom logic logic according to their own needs and achieve it by callback functions. in conclusion: The HTML parser JAR framework is a very useful tool for analysis and processing HTML documents.In this article, we understand the implementation principle of the HTML parser JAR framework and provide a simple Java code example to demonstrate how to use the framework.By using the HTML parser JAR framework, we can easily analyze and process HTML documents, extract the required information, and achieve customized business logic.