yang-mall-++i和i++

package com.yang.mall.tools; /** * Created by chijr on 16/11/5. */ import com.alibaba.fastjson.JSON; import com.alibaba.fastjson.TypeReference; import com.alibaba.fastjson.serializer.SerializeConfig; import com.alibaba.fastjson.serializer.SerializerFeature; import com.alibaba.fastjson.serializer.SimpleDateFormatSerializer; import com.fasterxml.jackson.core.JsonProcessingException; import com.fasterxml.jackson.databind.ObjectMapper; import org.apache.commons.lang3.StringUtils; import org.bson.types.ObjectId; import org.springframework.util.LinkedMultiValueMap; import org.springframework.util.MultiValueMap; import org.springframework.web.util.UriComponents; import org.springframework.web.util.UriComponentsBuilder; //import sun.misc.BASE64Encoder; import javax.servlet.http.HttpServletRequest; import java.io.*; import java.math.BigDecimal; import java.security.MessageDigest; import java.security.NoSuchAlgorithmException; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.*; public class Utils { private static SerializeConfig mapping = new SerializeConfig(); private static String dateFormat; static { dateFormat = "yyyy-MM-dd HH:mm:ss"; mapping.put(Date.class, new SimpleDateFormatSerializer(dateFormat)); } public Utils() { } public static Date getDateZero(Date dt){ Calendar calendar = Calendar.getInstance(); calendar.setTime(dt); calendar.set(Calendar.HOUR_OF_DAY, 0); calendar.set(Calendar.MINUTE, 0); calendar.set(Calendar.SECOND, 0); Date zero = calendar.getTime(); return zero; } public static Date dateAddDay(Date dt,int d){ Calendar c = Calendar.getInstance(); c.setTime(new Date()); c.add(Calendar.DAY_OF_MONTH, d); return c.getTime(); } // public static String encodePassword(String password){ // // return MD5.md5(password+JWTUtils.base64Secret); // // } public static int parseInt(String intString) { intString = StringUtils.trim(intString); if (StringUtils.isEmpty(intString)) { return 0; } int value = 0; try { value = Integer.parseInt(intString); } catch (Exception e) { System.err.println("字符串转换数据出错：原始数据是:"+intString+" 出错原因：" +e.getMessage()); return value; } return value; } public static double parseDouble(String doubleString) { if (StringUtils.isEmpty(doubleString)) { return 0.0; } double value = 0.0; try { value = Double.parseDouble(doubleString); } catch (Exception e) { return value; } return value; } public static String mapToUrl(String baseUrl, Map<String, String> newParams) { MultiValueMap<String, String> params = new LinkedMultiValueMap<String, String>(); params.setAll(newParams); UriComponents uriComponents = UriComponentsBuilder.fromHttpUrl(baseUrl).queryParams(params).build(); return uriComponents.toString(); } //get request headers public static Map<String, String> getHeaders(HttpServletRequest request) { Map<String, String> map = new HashMap<String, String>(); Enumeration headerNames = request.getHeaderNames(); while (headerNames.hasMoreElements()) { String key = (String) headerNames.nextElement(); String value = request.getHeader(key); map.put(key, value); } return map; } public static String safeString(String filePath) { if (StringUtils.isEmpty(filePath)) { return ""; } return filePath; } public static String safeStringArray(String[] array, int pos) { if (array == null) { return ""; } if ((array.length - 1) < pos) { return ""; } return StringUtils.trim(array[pos]); } public static List<String> readLines(String filePath) { ArrayList<String> strs = new ArrayList<String>(); BufferedReader br = null; String temp = ""; try { br = new BufferedReader(new FileReader(filePath)); while ((temp = br.readLine()) != null) { System.out.println(temp); strs.add(temp); } } catch (FileNotFoundException e1) { System.out.println("指定的文件不存在"); } catch (IOException e2) { e2.printStackTrace(); } finally { try { if (br != null) { br.close(); br = null; } return strs; } catch (IOException e) { e.printStackTrace(); return null; } } } public static String readString(String filePath) throws IOException { File file=new File(filePath); FileInputStream inStream=new FileInputStream(file); ByteArrayOutputStream bos = new ByteArrayOutputStream(); byte[] buffer=new byte[1024]; int length=-1; length = inStream.read(buffer); while(length!=-1) { bos.write(buffer,0,length); length = inStream.read(buffer); // .write方法 SDK 的解释是 Writes count bytes from the byte array buffer starting at offset index to this stream. // 当流关闭以后内容依然存在 } try { bos.close(); } catch (IOException e) { e.printStackTrace(); } try { inStream.close(); } catch (IOException e) { e.printStackTrace(); } return bos.toString(); // 为什么不一次性把buffer得大小取出来呢？为什么还要写入到bos中呢？ return new(buffer,"UTF-8") 不更好么? // return new String(bos.toByteArray(),"UTF-8"); } public static String excptionStackToString(Exception e){ StringWriter sw = null; PrintWriter pw = null; try { sw = new StringWriter(); pw = new PrintWriter(sw); //将出错的栈信息输出到printWriter中 e.printStackTrace(pw); pw.flush(); sw.flush(); } finally { if (sw != null) { try { sw.close(); } catch (IOException e1) { e1.printStackTrace(); } } if (pw != null) { pw.close(); } } return pw.toString(); } public static String formatDateTime(Date dt) { String tmstr = String.format("%1$tY-%1$tm-%1$td %1$tH:%1$tM:%1$tS", dt); return tmstr; } public static String timeString(Date date) { SimpleDateFormat sdf=new SimpleDateFormat("HH:mm"); return sdf.format(date); } public static String totalTimeString(Date date) { SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); return sdf.format(date); } public static Date addDay(Date day ,int many){ Calendar ca = Calendar.getInstance(); ca.setTime(day); ca.add(Calendar.DATE, many); day = ca.getTime(); return day; } public static String getHashMD5(String source){ return Utils.getHash(source,"MD5"); } public static String getHashSHA(String source){ return Utils.getHash(source,"SHA"); } /** * 由于MD5 与SHA-1均是从MD4 发展而来，它们的结构和强度等特性有很多相似之处