java+ mysql 给所有的表添加假数据

    public static Connection getConnection(){
            Connection conn = null;
            try {
            Class.forName("com.mysql.jdbc.Driver");
            String url = "jdbc:mysql://192.168.0.12:3306/dmp_report_testdb?";
            String user = "root";
            String pass = "ycmedia_2015";
            conn = DriverManager.getConnection(url,user,pass);
            } catch (ClassNotFoundException e) {
            e.printStackTrace();
            } catch (SQLException e) {
            e.printStackTrace();
            }
            return conn;
            }

     public static Set<String> getTableName() throws SQLException{
               Connection conn=getConnection();
               DatabaseMetaData data = conn.getMetaData();
               ResultSet colRet = data.getColumns(null,"%", "%","%");
               
               Set<String> set= new TreeSet<String>();
                while(colRet.next()) {
                  String  typeName =colRet.getString("TABLE_NAME");
                  set.add(typeName);
                  }
                 return set;
             }

         * @return
         * @throws SQLException
         */
         public static Set<String> getType() throws SQLException{
           Connection conn=getConnection();
           DatabaseMetaData data = conn.getMetaData();
           ResultSet colRet = data.getColumns(null,"%", "%","%");
           
           Set<String> set= new TreeSet<String>();
            while(colRet.next()) {
              String  typeName =colRet.getString("TYPE_NAME");
              set.add(typeName);
              }
             return set;
         }

        /**
             *  BIGINT
                BIGINT UNSIGNED(没有符号) 1-10
                INT
                INT UNSIGNED
                SMALLINT
                SMALLINT UNSIGNED
                TINYINT
                TINYINT UNSIGNED
                
                BIT  10
                
                DATE 最近一周
                
                DATETIME
                TIMESTAMP （最近一周）
                
                DECIMAL 11.11
                DOUBLE 11.11
                
                LONGTEXT
                MEDIUMTEXT
                TEXT
                VARCHAR

    //随机字符串
         public static String getRandomString(int length){
             String str="abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
             Random random=new Random();
             StringBuffer sb=new StringBuffer();
             for(int i=0;i<length;i++){
               int number=random.nextInt(62);
               sb.append(str.charAt(number));
             }
             return sb.toString();
         }

         /**
          * 获取最近一个月随机一天
          * @return
          */
            public static String getMoth(Integer  type){
                
                Random r = new Random();
                
                SimpleDateFormat sdf = null;
                
                if(type==1){
                    sdf=new SimpleDateFormat("yyyy-MM-dd");
                    
                }else{
                    sdf=new SimpleDateFormat("yyyy-MM-dd 00:00:00");
                }
                Calendar c = Calendar.getInstance();
                c.add(Calendar.DATE, - r.nextInt(30));
                Date monday = c.getTime();
                return sdf.format(monday);

            }
        

      /**
       * 获取sql
       * @param list
       * @param tableName
       * @return
       */
         public static String getSql(List<ClumnBean> list,String tableName){
             StringBuffer sb = new StringBuffer();
             Random random = new Random();
             sb.append("insert into  "+tableName +" values (");
             for (int i = 0; i < list.size(); i++) {
                 if(list.get(i).getColumnType().contains("INT")){
                        sb.append(random.nextInt(10)+", ");
                 }
                 else if(list.get(i).getColumnType().contains("CHAR")||list.get(i).getColumnType().contains("TEXT"))
                 {
                     sb.append("'"+getRandomString(5)+"', ");
                 }
                 else if(list.get(i).getColumnType().equals("BIT"))
                 {
                     sb.append("10, ");
                 }
                 else if(list.get(i).getColumnType().equals("DOUBLE")||list.get(i).getColumnType().equals("DECIMAL"))
                 {
                     sb.append("11.11, ");
                 }
                 else if(list.get(i).getColumnType().equals("DATETIME")||list.get(i).getColumnType().equals("TIMESTAMP"))
                 {
                     sb.append("'"+getMoth(2)+"', ");
                 }else if(list.get(i).getColumnType().equals("DATE")){
                     sb.append("'"+getMoth(1)+"', ");
                 }
                
             }
             return sb.toString().substring(0, sb.toString().length()-2)+")";
         }

        public static void main(String[] args) throws Exception{
            Connection conn=getConnection();
            Set<String> set = getTableName();
            List<ClumnBean> list =new ArrayList<ClumnBean>();
            for (String str :set) {
                
                list =getColumnList(str);
            
                
                for (int i = 0; i < 20; i++) {
                    String sql =getSql(list,str);
                    System.err.println(sql);
                    try {
                        conn.prepareStatement(sql).execute();
                    } catch (Exception e) {
                        System.err.println("遇到异常");
                        continue;
                    }
                }
                list =new ArrayList<ClumnBean>();
                
            }
      }