import java.io.BufferedReader;
import java.io.FileReader;
import java.lang.reflect.Field;
import java.nio.charset.Charset;
import java.util.ArrayList;
import java.util.List;import com.csvreader.CsvReader;
/*** 2016.3.22* @author sgl* CsvReaderUtil 用于处理csv文件的工具类*/
public class CsvReaderUtil {/*** 读取csv文件表头信息* @param fileName* @return*/private static List<String> readHeader(String fileName) {try {@SuppressWarnings("resource")BufferedReader reader = new BufferedReader(new FileReader(fileName));String header = reader.readLine();System.out.println(header);String[] temps = header.split(",");List<String> headerList = new ArrayList<String>();for (String string : temps) {if (!string.equals("$end")) {headerList.add(string);}}return headerList;} catch (Exception e) {e.printStackTrace();}return null;}/*** 读取csv内容* @param fileName* @return* @throws Exception*/private static ArrayList<String[]> readeCsv(String fileName) throws Exception {ArrayList<String[]> csvList = new ArrayList<String[]>(); String csvFilePath = fileName;CsvReader reader = new CsvReader(csvFilePath, ',', Charset.forName("UTF-8")); reader.readHeaders(); while (reader.readRecord()) { String[] Lines = reader.getValues();boolean isStop = false;for (int i = 0; i < Lines.length; i++) {if (Lines[0].equals("$end")) {isStop = true;break;}}if (isStop) {break;}csvList.add(Lines);}reader.close();return csvList;}/*** 通过反射获取对象列表* @param headerList csv表头信息(表头字段需和类属性对应)     * @param cntList csv表数据列表           * @param classNmae 类名   

     * @param path csv文件路径        * @return* @throws Exception*/public static List<Object> getConfigList(String path, String classNmae)throws Exception {List<Object> list = new ArrayList<Object>();List<String> headerList=readHeader(path);List<String[]> cntList=readeCsv(path);Class<?> clazz = Class.forName(classNmae);for (String[] tempArrs : cntList) {Object obj = clazz.newInstance();for (int i = 0; i < headerList.size(); i++) {Field f = clazz.getDeclaredField(headerList.get(i));System.out.println(headerList.get(i)+"------"+tempArrs[i]);f.setAccessible(true);setParamter(obj, f, tempArrs[i]);}list.add(obj);}return list;}/*** 设置参数* @param obj* @param f* @param val* @throws Exception*/private static void setParamter(Object obj, Field f, String val) throws Exception {System.out.println(f.getType().getCanonicalName());if (("int").equals(f.getType().getCanonicalName())||("java.lang.Integer").equals(f.getType().getCanonicalName())) {f.set(obj, Integer.parseInt(val)); } else if (("long").equals(f.getType().getCanonicalName())|| ("java.lang.Long").equals(f.getType().getCanonicalName())) {f.set(obj, Long.parseLong(val));} else if (("float").equals(f.getType().getCanonicalName())) {f.set(obj, Float.parseFloat(val));} else if (("float[]").equals(f.getType().getCanonicalName())) {f.set(obj, getFloatArrayByString(val));} else if (("java.lang.String").equals(f.getType().getCanonicalName())) {f.set(obj, val);} else if (("java.lang.Long[]").equals(f.getType().getCanonicalName())) {f.set(obj, getLongArrayByString(val));} else if (("int[]").equals(f.getType().getCanonicalName())) {f.set(obj, getIntArrayByString(val));} else if (("java.util.Date").equals(f.getType().getCanonicalName())) {f.set(obj, getDateByString(val));}}private static Object getDateByString(String val) {return DateFormatUtils.getDates(val);}private static Long[] getLongArrayByString(String temp) {temp = temp.substring(1, temp.length() - 1);String[] arrays = temp.split(",");Long[] newArr = new Long[arrays.length];for (int i = 0; i < newArr.length; i++) {newArr[i] = Long.parseLong(arrays[i]);}return newArr;}private static float[] getFloatArrayByString(String temp) {temp = temp.substring(1, temp.length() - 1);String[] arrays = temp.split(",");float[] newArr = new float[arrays.length];for (int i = 0; i < newArr.length; i++) {newArr[i] = Float.parseFloat(arrays[i]);}return newArr;}private static int[] getIntArrayByString(String temp) {temp = temp.substring(1, temp.length() - 1);String[] arrays = temp.split(",");int[] newArr = new int[arrays.length];for (int i = 0; i < newArr.length; i++) {newArr[i] = Integer.parseInt(arrays[i]);}return newArr;}
}