Java工作记事本

     工作始终会遇到很多需要收集的资料，时间长了，难免会忘记。作个简要记录，以资后用....

1. EJB容器下面使用JPA处理大批量数据，最终还是直接使用JDBC来做底层处理，容器处理事务，

不需要对事务做单独处理。

 

public void importData(final List<TimetableJourneyDetail> retList) {
        if (null != retList && retList.size() > 0) {
            final EntityManagerFactory emf = entityManager.getEntityManagerFactory();
            final BrokerFactory factory = JPAFacadeHelper.toBrokerFactory(emf);
            final OpenJPAConfiguration conf = factory.getConfiguration();
            final DataSourceWrapper dw = new DataSourceWrapper((DataSource) conf.getConnectionFactory());
            final SystemUser user = SecurityUtil.getCurrentUser();
            final Long userId = user.getId();
            final String loginId = user.getLoginId();
            PreparedStatement pst = null;
            Connection conn = null;
            try {
                conn = dw.getConnection();
                //conn.setAutoCommit(false);
                final StringBuffer sql = new StringBuffer("INSERT INTO \"LR_TIMETABLE_JOURNEY_DETAIL\"");
                sql.append("(\"ID\",\"PARENT_ID\",\"LINE_NAME\",\"TRAIN_NO\",\"TRS_NO\",")
                    .append("\"TRIP_NO\",\"REVENUE_FLAG\",\"DIRECTION\",\"FROM_STOP_PLATFORM\",")
                    .append("\"FROM_STOP_ARRIVAL_TIME\",\"FROM_STOP_DEPART_TIME\",\"TO_STOP_PLATFORM\"")
                    .append(",\"TO_STOP_ARRIVAL_TIME\",\"TO_STOP_DEPART_TIME\",\"DEPART_IN_OUT_INDICATOR\"")
                    .append(",\"SINGLE_COUPLE_CAR\",\"KM\",\"TRIPS\",\"LAST_UPD_USER_ID\",")
                    .append("\"LAST_UPD_USER\",\"LAST_UPD_DATETIME\") VALUES")
                    .append("(SEQ_JOURNEY_DETAIL.NEXTVAL,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,")
                    .append(userId).append(",'").append(loginId).append("',(CURRENT DATE))");
                pst = conn.prepareStatement(sql.toString());
                for (TimetableJourneyDetail d : retList) {
                    pst.setLong(1, d.getParentId());
                    pst.setString(2, d.getLineName());
                    pst.setString(3, d.getTrainNo());
                    pst.setString(4, d.getTrsNo());
                    pst.setString(5, d.getTripNo());
                    pst.setString(6, d.getRevenueFlag());
                    pst.setString(7, d.getDirection());
                    pst.setString(8, d.getFromStopPlatform());
                    pst.setString(9, d.getFromStopArrivalTime());
                    pst.setString(10, d.getFromStopDepartTime());
                    pst.setString(11, d.getToStopPlatform());
                    pst.setString(12, d.getToStopArrivalTime());
                    pst.setString(13, d.getToStopDepartTime());
                    pst.setString(14, d.getDepartInOutIndicator());
                    pst.setString(15, d.getSingleCoupleCar());
                    pst.setDouble(16, d.getKm());
                    pst.setDouble(17, d.getTrips());
                    pst.addBatch();
                }
                final int []count = pst.executeBatch();
                System.out.println("number : " + count.length);
                //conn.commit();
                conn.close();
            } catch (SQLException e) {
                e.printStackTrace();
            } finally {
                if (null != pst) {
                    try {
                        pst.close();
                        if (null != conn && !conn.isClosed()) {
                            conn.close();
                        }
                    } catch (SQLException e) {
                        e.printStackTrace();
                    }
                }

            }
        }
    }

 

2. 利用Java异常特性来校验日期格式，代码简洁，不错的功能...

    /**
     * To check the date is valid or not
     * @param input
     * @return
     */
    public static boolean isValidDate(final String input) {
        boolean isValid = false;
        final String formatString = "yyyy-MM-dd";
        try {
            final SimpleDateFormat format = new SimpleDateFormat(formatString);
            format.setLenient(false);
            format.parse(input);
            isValid = true;
        } catch (ParseException e) {
            isValid = false;
        } catch (IllegalArgumentException e) {
            isValid = false;
        }
        return isValid;
    }

 

3. Java操作内存溢出几个案例...

    /**
     * 
     * outOfmemory
     * @param a
     * @param b
     * @return the void
     */
    private static void outOfmemory(int a , int b) {
        //java.lang.StackOverflowError  outOfmemory
//        outOfmemory(a*b, b);

        //java.lang.OutOfMemoryError: Java heap space
       List<String> str = new ArrayList<String>(0);
        int ab = 0;
        while(true) {
            //ab++;
            str.add("abc");
            //Object obk = new Object();
        }

        //java.lang.OutOfMemoryError: PermGen space
//        List<String> str = new ArrayList<String>(0);
//        int i = 0;
//        while(true) {
//            i++;
//            str.add(String.valueOf(i).intern());
//        }
    }

 4. 四舍五入处理方法...

    /**
     * 
     * jsfRound
     * @param a
     * @return the void
     */
    private static void jsfRound(double a) {
        System.out.println("==0==" + a + "==" + String.format("%.2f", a));
        //please attention ROUND_HALF_DOWN  ROUND_HALF_UP
        System.out.println("==1==" + a + "===" + new BigDecimal(String.valueOf(a)).setScale(2, BigDecimal.ROUND_HALF_DOWN).doubleValue());
        System.out.println("==2==" + a + "==" + new BigDecimal(String.valueOf(a)).setScale(2, BigDecimal.ROUND_HALF_UP).doubleValue());
    }

 

 5. 处理集合中重复数据....

   

    /**
     *
     * dealWithDuplicationObjArray
     * @return
     * @return the List<Object[]>
     */
    private static List<Object[]> dealWithDuplicationObjArray() {
        final List<Object[]> listObj = new ArrayList<Object[]>(0);
        listObj.add(new Object[]{"20/10/2012","a","1 REV 4"});
        listObj.add(new Object[]{"21/10/2012","b","1 REV 4"});
        listObj.add(new Object[]{"22/10/2012","c","1 REV 4"});
        listObj.add(new Object[]{"23/10/2012","d","1 REV 4"});
        listObj.add(new Object[]{"23/10/2012","666","1 REV 3"});
        final List<Object[]> retList = new ArrayList<Object[]>(0);
        final Map<Object, Object[]> map = new HashMap<Object, Object[]>();
        for (Object[] objects : listObj) {
            map.put(objects[0], objects);
        }
        final Set<Entry<Object, Object[]>> set = map.entrySet();
        for (Entry<Object, Object[]> entry : set) {
            retList.add(entry.getValue());
            System.out.println("key = " + entry.getKey() + "=value=" + ((Object[])entry.getValue())[1] + "---" + ((Object[])entry.getValue())[2]);
        }
        return retList;
    }

   处理重复集合元素另一方法，从已有集合元素中找出重复的元素：

  

/**
     * Find Collection duplicated elements,get duplicated elements
     * @param elements
     * @return Collection
     */
    public static Collection<?> findCollectionDuplicateElements(final Collection<?> elements) {
        final Set<Object> set = new HashSet<Object>();
        final Set<Object> retSet = new HashSet<Object>();
        for (Object object : elements) {
            set.add(object);
        }
        if (elements.size() == set.size()) {
            return retSet;
        } else {
            for (Object object : set) {
                elements.remove(object);
            }
        }
        for (Object object : elements) {
            retSet.add(object);
        }
        return retSet;
    }

 

6. 反射找出javabean对象属性名以及对应值：

/**
     *
     * copyObjectToHashMap
     * @param object
     * @return
     * @throws Exception
     * @return the Map<?,?>
     */
    public static Map<?,?> copyObjectToHashMap(final Object object) throws Exception {
        final Class clazz = object.getClass();
        final Method[] methods = clazz.getDeclaredMethods();
        final Map<String, Object> vo = new HashMap<String, Object>();
        for (Method method : methods) {
            String methodName = method.getName();
            String tempName = "";
            if (methodName.startsWith("get")) {
                tempName = methodName.substring(3, 4).toLowerCase() + methodName.substring(4);
                final Object obj = method.invoke(object, (Object[]) method.getParameterTypes());
                if (null != obj && !"".equals(obj)) {
                    vo.put(tempName, obj);
                }
            }
            tempName = null;
            methodName = null;
        }
        return vo;
    }

 

 7.  对于大数值的运算公式(任意整数使用BigInteger类，对于任意浮点数使用BigDecimal类)

    private static final int DEF_DIV_SCALE = 10;

    public static BigDecimal add(BigDecimal v1, BigDecimal v2) {
        return v1.add(v2);
    }

    public static BigDecimal subtract(BigDecimal v1, BigDecimal v2) {
        return v1.subtract(v2);
    }

    public static BigDecimal multiply(BigDecimal v1, BigDecimal v2) {
        return v1.multiply(v2);
    }

    public static BigDecimal div(BigDecimal v1, BigDecimal v2) {
        return div(v1, v2, DEF_DIV_SCALE);
    }

    public static BigDecimal div(BigDecimal v1, BigDecimal v2, int scale) {
        if (scale < 0) {
            throw new IllegalArgumentException("The scale must be a positive integer or zero");
        }
        return v1.divide(v2, scale, BigDecimal.ROUND_HALF_UP);
    }

    public static double round(double v, int scale) {
        if (scale < 0) {
            throw new IllegalArgumentException("The scale must be a positive integer or zero");
        }
        BigDecimal b = new BigDecimal(Double.toString(v));
        BigDecimal one = new BigDecimal("1");
        return b.divide(one, scale, BigDecimal.ROUND_HALF_UP).doubleValue();
    }

    public static void main(String[] args) {
        BigDecimal a = new BigDecimal("123456789123");
        BigDecimal b = new BigDecimal("987654321987");
        System.out.println(add(a, b));
        System.out.println(subtract(a, b));
        System.out.println(div(a, b));
        System.out.println(multiply(a, b));
    }

 

8. 深度克隆方法(推荐数据流方法，或者自己重写必须要写最小的基本数据类型为止(难度大))

//深度克隆, 克隆对象必须实现 java.io.Serializable
    public final static Object objectCopy(Object oldObj) {
        Object newObj = null;
        ByteArrayOutputStream bo = null;
        ObjectOutputStream oo = null;
        ByteArrayInputStream bi = null;
        ObjectInputStream oi = null;
        try {
            bo = new ByteArrayOutputStream();
            oo = new ObjectOutputStream(bo);
            oo.writeObject(oldObj);//源对象
            bi = new ByteArrayInputStream(bo.toByteArray());
            oi = new ObjectInputStream(bi);
            newObj = oi.readObject();//目标对象
        } catch (IOException e) {
            e.printStackTrace();
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        } finally {
            try {
                bo.close();
                oo.close();
                bi.close();
                bo.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return newObj;
    }

 

9，图形化校验一例

三种方式输出：流文件直接输出、base64(有些浏览器存在问题)、保存文件路径方式

 

后端

private static class GenerateVerifyPicture {
  private static char pictureChars[] = { 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i',
    'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v',
    'w', 'x', 'y', 'z', '1', '2', '3', '4', '5', '6', '7', '8',
    '9', '0' };

  public static String getCertPic(int width, int height, OutputStream os) {
   if (width <= 0)
    width = 60;
   if (height <= 0)
    height = 20;
   BufferedImage image = new BufferedImage(width, height,
     BufferedImage.TYPE_INT_RGB);
   
//   Graphics2D g = image.createGraphics();
   // 定义字体样式
   Font myFont = new Font("黑体", Font.BOLD, 20);
   
   // 获取图形上下文
   Graphics g = image.getGraphics();
   // 设定背景色
   g.setColor(new Color(0xDCDCDC));
   g.fillRect(0, 0, width, height);
   // 画边框
   g.setColor(Color.black);
   g.setFont(myFont);
   g.drawRect(0, 0, width - 1, height - 1);
   // 取随机产生的认证码
   StringBuffer strEnsure = new StringBuffer("");
   for (int i = 0; i < 5; ++i) {
    strEnsure.append(pictureChars[(int) (pictureChars.length * Math.random())]);
   }
   g.setColor(Color.black);
//   g.setColor(getRandomFontColor());
   g.setFont(new Font("Atlantic Inline", Font.PLAIN, 18));
   String str = strEnsure.substring(0, 1);
   g.drawString(str, 8, 17);
   str = strEnsure.substring(1, 2);
   g.drawString(str, 20, 15);
   str = strEnsure.substring(2, 3);
   g.drawString(str, 35, 18);
   str = strEnsure.substring(3, 4);
   g.drawString(str, 45, 15);
   str = strEnsure.substring(4, 5);
   g.drawString(str, 60, 17);
   // 随机产生50个干扰点
   Random rand = new Random();
   for (int i = 0; i < 50; i++) {
    int x = rand.nextInt(width);
    int y = rand.nextInt(height);
    g.drawOval(x, y, 1, 1);
    //g.setColor(getRandomBgColor());
   }
   // 释放图形上下文
   g.dispose();
   String base64 = "";
   Map<Object, Object> m = new LinkedHashMap<Object, Object>();
   String uuid = StringUtil.getUUID();
   try {
    // 输出图像到页面
    ImageIO.write(image, "jpg", os);
    //os.flush();
   } catch (IOException e) {
    e.printStackTrace();
    m.put("errorCode", -1);
    return StringUtil.toJsonString(m);
   }
   m.put("picValue", base64);
   m.put("picKey", uuid);
   RedisAPI.setex(uuid, strEnsure.toString(), EXPIRE_TIME);
   ////do something database into database
   System.out.println("picture base64 map=====uuid:\t" + uuid + "\tvalue:\t" + strEnsure.toString());
   return StringUtil.toJsonString(m);
  }

  private static void generateImage(String uuid, byte[] imageInByte)
    throws FileNotFoundException, IOException {
   if (!AlipayConfig.IS_VERIFY_CODE) {//是否生成指定目录路径下面图片
    FileOutputStream fos = new FileOutputStream("/data/image/"+uuid+".jpg");
    fos.write(imageInByte, 0, imageInByte.length);
    fos.flush();
    fos.close();
   }
  }
  
  public static String getCertPic(int width, int height) {
   if (width <= 0)
    width = 60;
   if (height <= 0)
    height = 20;
   BufferedImage image = new BufferedImage(width, height,
     BufferedImage.TYPE_INT_RGB);
   
//   Graphics2D g = image.createGraphics();
   // 定义字体样式    // 设置字体
   Font myFont = new Font("黑体", Font.BOLD, 20);
   
   // 获取图形上下文
   Graphics g = image.getGraphics();
   // 设定背景色
   g.setColor(new Color(0xDCDCDC));
   g.fillRect(0, 0, width, height);
   // 画边框
   g.setColor(Color.black);
   g.setFont(myFont);
   g.drawRect(0, 0, width - 1, height - 1);
   // 取随机产生的认证码
   StringBuffer strEnsure = new StringBuffer("");
      for (int i = 0; i < 5; ++i) {
    strEnsure.append(pictureChars[(int) (pictureChars.length * Math.random())]);
   }
   g.setColor(Color.black);
//   g.setColor(getRandomFontColor());
   g.setFont(new Font("Atlantic Inline", Font.PLAIN, 18));
   String str = strEnsure.substring(0, 1);
   g.drawString(str, 8, 17);
   str = strEnsure.substring(1, 2);
   g.drawString(str, 20, 15);
   str = strEnsure.substring(2, 3);
   g.drawString(str, 35, 18);
   str = strEnsure.substring(3, 4);
   g.drawString(str, 45, 15);
   str = strEnsure.substring(4, 5);
   g.drawString(str, 60, 17);
   // 随机产生50个干扰点
   Random rand = new Random();
   for (int i = 0; i < 50; i++) {
    int x = rand.nextInt(width);
    int y = rand.nextInt(height);
    g.drawOval(x, y, 1, 1);
    //g.setColor(getRandomBgColor());
   }
   // 释放图形上下文
   g.dispose();
   String base64 = "";
   Map<Object, Object> m = new LinkedHashMap<Object, Object>();
   String uuid = StringUtil.getUUID();
   try {
    // 输出图像到页面
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    ImageIO.write(image, "JPEG", baos);
    baos.flush();
//    IOUtils
    byte[] imageInByte = baos.toByteArray();
    generateImage(uuid, imageInByte);
    base64 = Base64.encodeBase64String(imageInByte);
    //System.out.println("base64==============" + base64);
    baos.close(); 
   } catch (IOException e) {
    e.printStackTrace();
    m.put("errorCode", -1);
    return StringUtil.toJsonString(m);
   }
   m.put("picValue", base64);
   m.put("picKey", uuid);
   RedisAPI.setex(uuid, strEnsure.toString(), EXPIRE_TIME);
   ////do something database into database
   System.out.println("picture base64 map=====uuid:\t" + uuid + "\tvalue:\t" + strEnsure.toString());
   return StringUtil.toJsonString(m);
  }
  
  @SuppressWarnings("unused")
  private static Color getRandomFontColor() {
   //Random random = new Random();
   String [] cs = {"FF6347","FFA500","FF69B4","FF3030","FF0000","EE5C42","EE7AE9","E066FF","CD2626","CD0000","BF3EFF","8B1A1A","8B008B","7D26CD","3A5FCD","191970","303030","000000","1F1F1F","333333","4F4F4F"};
   String color = cs[StringUtil.getRandomNum(cs.length)];
   //r =
   return Color.getColor(color);
  }
  
  @SuppressWarnings("unused")
  private static Color getRandomBgColor() {
   //Random random = new Random();
   String [] cs = {"FFF5EE","F8F8FF","EEE8AA","E5E5E5","D4D4D4","CCCCCC","CAE1FF","D1EEEE","EE9A49","CD6889"};
   String color = cs[StringUtil.getRandomNum(cs.length)];
   //r =
   return Color.getColor(color);
  }
 }

 

spring前端控制输出：

/*
  * generate picture information
  */
 @RequestMapping(value = "/generatePic.do")
 public String generatePic(HttpServletRequest request, HttpServletResponse response, ModelMap model) throws Exception {
  // 设置不缓存图片
  response.setHeader("Pragma", "No-cache");
  response.setHeader("Cache-Control", "No-cache");
  response.setDateHeader("Expires", 0);
  int width = 80;
  int height = 25;
//  try {
//   width = Integer.parseInt(request.getParameter("width"));
//   height = Integer.parseInt(request.getParameter("height"));
//  } catch (Exception ex) {
//   width = 80;
//   height = 25;
//   ex.printStackTrace();
//  }
  String base64 = "";
  try {
   base64 = purchaseOrderService.generatePictureCode(width, height);
   model.put("message", base64);
  } catch (Exception ex) {
   Map<Object, Object> m = new LinkedHashMap<Object, Object>();
   m.put("errorCode", -1);
   model.put("message", StringUtil.toJsonString(m));
//   ex.printStackTrace();
  }
  return "message.json";
 }
 
 /*
  * generate picture information
  */
 @RequestMapping(value = "/generatePic2.do")
 public String generatePic2(HttpServletRequest request, HttpServletResponse response, ModelMap model) throws Exception {
  // 设置不缓存图片
  response.setHeader("Pragma", "No-cache");
  response.setHeader("Cache-Control", "No-cache");
  response.setDateHeader("Expires", 0);
  int width = 80;
  int height = 25;
//  try {
//   width = Integer.parseInt(request.getParameter("width"));
//   height = Integer.parseInt(request.getParameter("height"));
//  } catch (Exception ex) {
//   width = 80;
//   height = 25;
//   ex.printStackTrace();
//  }
  String base64 = "";
  try {
   base64 = purchaseOrderService.generatePictureCode(width, height, response.getOutputStream());
   model.put("message", base64);
  } catch (Exception ex) {
   Map<Object, Object> m = new LinkedHashMap<Object, Object>();
   m.put("errorCode", -1);
   model.put("message", StringUtil.toJsonString(m));
//   ex.printStackTrace();
  }
  return "message.json";
 }

 

//前端获取图片

　　<%@ page contentType="text/html;charset=GB2312" %>

<script type="text/javascript">
  function reloadcode(){
                var verify=document.getElementById('code');
                verify.setAttribute('src','../generatePic2.do?it='+Math.random());
        }
</script>
　　<html>
　　 <head><title>Picture check code</title></head>
　　 <body>
   　　<table align="center" border="0">
   <tralign="center"><td><fontcolor="red"><html:errors/></font></td></tr>
　　 <form. action="#" method="post" >
　　 <tr><td><img src="../generatePic2.do" id="code"   > <input type="text" name="strEnsure" value=""/></td></</td></tr>
<br/>
<tr><td><img src="data:image/jpeg;base64,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" id="code"   > <input type="text" name="strEnsure" value=""/></td></</td></tr>

 <tr><td><input type="button" onclick="reloadcode()" value="看不清楚,换一张" style="cursor: pointer;"/> </td></tr>
<tralign="left"><td>       
<!-- 　　 <input type="submit" value="确定"/></td></tr> -->
　　 </form>
　　 </table>
　　 </body>
　　</html>

 

效果如图：