Spring mvc-Integration (integration)-Generate Excel sample (reprint practice)

The following content is translated from: https://www.tutorialspoint.com/springmvc/springmvc_excel.htm

Description: The sample is based on spring MVC 4.1.6.

The following example shows how to build Excel using the Spring WEB MVC framework. First, let's use the Eclipse IDE and follow these steps to develop a dynamic form-based Web application using the Spring Web framework:

Step	Description
1	Create a project named TestWeb, under a package com.tutorialspoint, as described in the Spring Mvc-hello World Example section.
2	Create a Java class Userexcelview,excelcontroller under Com.tutorialspoint package.
3	Download Apache POI library Apache poi from the Maven repository page. Put it in your classpath.
4	The final step is to create the contents of all the source and configuration files and export the application as described below.

Excelcontroller.java

 PackageCom.tutorialspoint;ImportJava.util.HashMap;ImportJava.util.Map;Importjavax.servlet.http.HttpServletRequest;ImportJavax.servlet.http.HttpServletResponse;ImportOrg.springframework.web.servlet.ModelAndView;ImportOrg.springframework.web.servlet.mvc.AbstractController; Public classExcelcontrollerextendsAbstractcontroller {@OverrideprotectedModelandview handlerequestinternal (httpservletrequest request, httpservletresponse response)throwsException {//User DataMap<string,string> UserData =NewHashmap<string,string>(); Userdata.put ("1", "Mahesh"); Userdata.put ("2", "Suresh"); Userdata.put ("3", "Ramesh"); Userdata.put ("4", "Naresh"); return NewModelandview ("Usersummary", "UserData", UserData); }}

Userexcelview.java

 PackageCom.tutorialspoint;ImportJava.util.Map;Importjavax.servlet.http.HttpServletRequest;ImportJavax.servlet.http.HttpServletResponse;ImportOrg.apache.poi.hssf.usermodel.HSSFRow;ImportOrg.apache.poi.hssf.usermodel.HSSFSheet;ImportOrg.apache.poi.hssf.usermodel.HSSFWorkbook;ImportOrg.springframework.web.servlet.view.document.AbstractExcelView; Public classUserexcelviewextendsAbstractexcelview {@Overrideprotected voidBuildexceldocument (map<string, object>model, Hssfworkbook workbook, httpservletrequest request, httpservletresponse response)throwsException {Map<String,String> UserData = (map<string,string>) model.get ("UserData"); //Create a WordsheetHssfsheet sheet = workbook.createsheet ("User report"); Hssfrow Header= Sheet.createrow (0); Header.createcell (0). Setcellvalue ("Roll No")); Header.createcell (1). Setcellvalue ("Name")); intRowNum = 1;  for(Map.entry<string, string>Entry:userData.entrySet ()) {            //Create the row dataHssfrow row = Sheet.createrow (rownum++); Row.createcell (0). Setcellvalue (Entry.getkey ()); Row.createcell (1). Setcellvalue (Entry.getvalue ()); }      }}

Testweb-servlet.xml

<Beansxmlns= "Http://www.springframework.org/schema/beans"Xmlns:context= "Http://www.springframework.org/schema/context"Xmlns:xsi= "Http://www.w3.org/2001/XMLSchema-instance"Xmlns:mvc= "Http://www.springframework.org/schema/mvc"xsi:schemalocation= "Http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0. XSD Http://www.springframework.org/schema/context http://www.springframework.org/schema/context/ Spring-context-3.0.xsd Http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/ Spring-mvc-3.0.xsd ">   <Beanclass= "Org.springframework.web.servlet.mvc.support.ControllerClassNameHandlerMapping" />   <Beanclass= "Com.tutorialspoint.ExcelController" />   <Beanclass= "Org.springframework.web.servlet.view.XmlViewResolver">      < Propertyname= "Location">         <value>/web-inf/views.xml</value>      </ Property>   </Bean></Beans>

Views.xml

<Beansxmlns= "Http://www.springframework.org/schema/beans"Xmlns:context= "Http://www.springframework.org/schema/context"Xmlns:xsi= "Http://www.w3.org/2001/XMLSchema-instance"xsi:schemalocation= "Http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0. XSD Http://www.springframework.org/schema/context http://www.springframework.org/schema/context/ Spring-context-3.0.xsd ">   <BeanID= "Usersummary"class= "Com.tutorialspoint.UserExcelView"></Bean></Beans>

Here we create a excelcontroller and a excelview. The Apache POI Library processes the Microsoft Office file format and transforms the data into an Excel document.

After you finish creating the source files and profiles, export the application. Right-click the application and use the Export > WAR file option and save your testweb.war file in the Tomcat WebApps folder.

Now start your Tomcat server and make sure you can access other pages from the WebApps folder using a standard browser. Now try the URL http://localhost:8080/TestWeb/excel, you should see the following results.

Maven Example:

Https://github.com/easonjim/5_java_example/tree/master/springmvc/tutorialspoint/test30

Spring mvc-Integration (integration)-Generate Excel sample (reprint practice)