Dynamic Generation and PARSING of Excel Template Framework

The EasyExcel framework is a powerful and flexible Excel processing tool developed by Java. It provides convenient methods to dynamically generate and analyze the Excel template.This article will introduce the dynamic generation and analysis of Excel templates with the EasyExcel framework, and provide the corresponding Java code example. 1. The dynamic generation of Excel template When using the EasyExcel framework to generate an Excel template, we can create a Java object or use the MAP to represent each line of data of the Excel table and write these data into the template.The following is a simple example, showing how to use the EasyExcel framework to generate the Excel template: public class EasyExcelDynamicGeneration { public static void main(String[] args) { // Create an excelwriter object ExcelWriter writer = EasyExcel.write("template.xlsx").build(); // Define the Excel header List<List<String>> head = new ArrayList<>(); List<String> headerRow = new ArrayList<>(); headRow.add ("Name"); headRow.add ("age"); head.add(headerRow); // Define Excel data List<List<Object>> data = new ArrayList<>(); List<Object> dataRow = new ArrayList<>(); dataarow.add ("Zhang San"); dataRow.add(20); data.add(dataRow); // Write the head and data into the Excel template Sheet sheet = new Sheet(1, 0); sheet.setHead(head); writer.write(data, sheet); // Close the excel object writer.finish(); } } In this example, we first created an ExcelWriter object and specified the file name of the Excel template to be generated.Then, we defined Excel heads and data, wrote them into the Excel template, and finally closed the Excel object. 2. Analysis of Excel template It is also simple to use the EasyExcel framework to analyze the Excel template.By defining a Java object, we can map the data in the excel template to the Java object by line and process the data accordingly.The following is an example that demonstrates how to use the EasyExcel framework to analyze the Excel template: public class EasyExcelParsing { public static void main(String[] args) { // Create ExcelReader objects ExcelReader reader = EasyExcel.read("template.xlsx").build(); // Definition and analytical monitoring device AnalysisEventListener<List<Object>> listener = new AnalysisEventListener<List<Object>>() { @Override public void invoke(List<Object> data, AnalysisContext context) { // Process each line of data System.out.println ("Name:" + Data.get (0) + ", age:" + data.get (1)); } @Override public void doAfterAllAnalysed(AnalysisContext context) { // The operation after the analysis is complete } }; // Read the Excel template and analyze the data reader.read(new Sheet(1, 0), listener); // Close the excel object reader.finish(); } } In this example, we first created an ExcelReader object and specified the file name of the Excel template to be parsed.Then, a resolution monitoring device is defined, and each line of data is processed by implementing the Invoke method. When all the data analysis is completed, some follow -up operations can be performed in the DOAFTERALANALYSED method.Finally, read the excel template by calling the Reader.read method and parsing the data, and close the Excel object. In summary, the EasyExcel framework provides a convenient and easy -to -use method to dynamically generate and analyze the Excel template, which can greatly simplify the operation of Excel in Java development.Through the above examples, you can quickly master the basic usage of the EasyExcel framework and apply these techniques in your own project.