JAVA导出成CSV文件详解编程语言

import java.io.File; 
import java.io.IOException; 
import java.util.List; 
 
import com.google.common.base.Charsets; 
import com.google.common.base.Joiner; 
import com.google.common.base.Preconditions; 
import com.google.common.collect.Lists; 
import com.google.common.io.Files; 
import com.google.common.primitives.Bytes; 
 
public class FooUtilsCsvHelper { 
 
    // csv's default delemiter is ',' 
    private final static String DEFAULT_DELIMITER = ","; 
    // Mark a new line 
    private final static String DEFAULT_END = "/r/n"; 
    // If you do not want a UTF-8 ,just replace the byte array. 
    private final static byte commonCsvHead[] = { (byte) 0xEF, (byte) 0xBB, 
            (byte) 0xBF }; 
 
    /** 
     * Write source to a csv file 
     *  
     * @param source 
     * @throws IOException 
     */ 
    public static void writeCsv(List<List<String>> source) throws IOException { 
        // Aoid java.lang.NullPointerException 
        Preconditions.checkNotNull(source); 
        StringBuilder sbBuilder = new StringBuilder(); 
        for (List<String> list : source) { 
            sbBuilder.append(Joiner.on(DEFAULT_DELIMITER).join(list)).append( 
                    DEFAULT_END); 
        } 
        Files.write(Bytes.concat(commonCsvHead, 
                sbBuilder.toString().getBytes(Charsets.UTF_8.toString())), 
                new File("d:///123.csv")); 
    } 
 
    /** 
     * Simple read a csv file 
     *  
     * @param file 
     * @throws IOException 
     */ 
    public static void readCsv(File file) throws IOException { 
        System.out.println(Files.readFirstLine(file, Charsets.UTF_8)); 
    } 
 
    // Run a small test yourself. 
    public static void main(String[] args) throws IOException { 
        List<List<String>> source = Lists.newArrayList(); 
        List<String> tmpL = Lists.newArrayList(); 
        tmpL.add("测试titile1"); 
        tmpL.add("测试titile2"); 
        source.add(tmpL); 
        writeCsv(source); 
        readCsv(new File("d:///123.csv")); 
    } 
}