如何使用Spring Rest WebServices創建csv文件？

Question

我想通過使用spring restful webservice api爲給定的pojo類生成csv文件。我怎麼做 ？

Answer 1

package net.codejava.spring.controller; 

import java.io.IOException; 
import java.util.Arrays; 
import java.util.List; 

import javax.servlet.http.HttpServletResponse; 

import net.codejava.spring.model.Book; 

import org.springframework.stereotype.Controller; 
import org.springframework.web.bind.annotation.RequestMapping; 
import org.supercsv.io.CsvBeanWriter; 
import org.supercsv.io.ICsvBeanWriter; 
import org.supercsv.prefs.CsvPreference; 

/** 
* This Spring controller class implements a CSV file download functionality. 
* @author www.codejava.net 
* 
*/ 
@Controller 
public class CSVFileDownloadController { 
    @RequestMapping(value = "/downloadCSV") 
    public void downloadCSV(HttpServletResponse response) throws IOException { 

     String csvFileName = "books.csv"; 

     response.setContentType("text/csv"); 

     // creates mock data 
     String headerKey = "Content-Disposition"; 
     String headerValue = String.format("attachment; filename=\"%s\"", 
       csvFileName); 
     response.setHeader(headerKey, headerValue); 

     Book book1 = new Book("Effective Java", "Java Best Practices", 
       "Joshua Bloch", "Addision-Wesley", "0321356683", "05/08/2008", 
       38); 

     Book book2 = new Book("Head First Java", "Java for Beginners", 
       "Kathy Sierra & Bert Bates", "O'Reilly Media", "0321356683", 
       "02/09/2005", 30); 

     Book book3 = new Book("Thinking in Java", "Java Core In-depth", 
       "Bruce Eckel", "Prentice Hall", "0131872486", "02/26/2006", 45); 

     Book book4 = new Book("Java Generics and Collections", 
       "Comprehensive guide to generics and collections", 
       "Naftalin & Philip Wadler", "O'Reilly Media", "0596527756", 
       "10/24/2006", 27); 

     List<Book> listBooks = Arrays.asList(book1, book2, book3, book4); 

     // uses the Super CSV API to generate CSV data from the model data 
     ICsvBeanWriter csvWriter = new CsvBeanWriter(response.getWriter(), 
       CsvPreference.STANDARD_PREFERENCE); 

     String[] header = { "Title", "Description", "Author", "Publisher", 
       "isbn", "PublishedDate", "Price" }; 

     csvWriter.writeHeader(header); 

     for (Book aBook : listBooks) { 
      csvWriter.write(aBook, header); 
     } 

     csvWriter.close(); 
    } 
} 

http://www.codejava.net/frameworks/spring/spring-mvc-with-csv-file-download-example