hai__zi的博客

所需的包import java.io.*;import sun.misc.BASE64Decoder;import sun.misc.BASE64Encoder;编码/** * 转换base64 * @param imgPath 图片路径 * @return */ public static String getImageStr(String imgPath) { InputStream inputStream = null;

第一种语法：Random r = new Random(种子); Random r = new Random();包:java.util.Random这是一种简单的生成随机数的方法，主要是它的种子，种子为long类型的。例子：public static void main(String[] args) { Random random = new Random(20); int num = random.nextInt(100); System.out.println(num); //结

<!-- adapter log4j --> <dependency> <groupId>org.slf4j</groupId> <artifactId>log4j-over-slf4j</artifactId> <version>1.7.12</version> </dependency> .

import java.io.InputStream;import org.apache.ibatis.io.Resources;import org.apache.ibatis.jdbc.Null;import org.apache.ibatis.session.SqlSession;import org.apache.ibatis.session.SqlSessionFactory;import org.apache.ibatis.session.SqlSessionFactoryBuild

配置文件FAULT_100 = 急停按下，否则急停坏了!,Emergency stop press,or emergency stop is broken!FAULT_106 = 阶段L1欠压!,Phase L1 Undervoltage!FAULT_101 = 阶段L3过电压,Phase L3 OvervoltageFAULT_105 = 阶段L1过电压,Phase L1 OvervoltageFAULT_103 = 阶段L2过电压,Phase L2 OvervoltageFAULT_104

@SuppressWarnings("all")public class LinkList<E> implements ILink<E> { private class Node<E>{ private E data; //存储的数据 private Node next; //下一个节点 public Node(E data){ //构造方法,在实例化的时候存储数据 this.data = data; } //添加

package amazon;import java.io.IOException;import java.nio.charset.Charset;import java.security.KeyManagementException;import java.security.KeyStoreException;import java.security.NoSuchAlgorithmException;import java.security.cert.CertificateException

import java.io.Serializable;import java.util.List;/** * 分页辅助类 * @author Administrator * */public class PageUtils implements Serializable { private static final long serialVersionUID = -8741766802354222579L; //每页数量 private int pageSize; /.

package com.growatt.oss.method.itext;import java.io.File;import java.io.FileNotFoundException;import java.io.IOException;import java.io.OutputStream;import java.net.MalformedURLException;import java.text.SimpleDateFormat;import java.util.ArrayList;

import java.awt.Color;import java.awt.Font;import java.io.File;import java.io.FileOutputStream;import java.text.DecimalFormat;import java.text.NumberFormat;import org.jfree.chart.ChartFactory;import org.jfree.chart.ChartFrame;import org.jfree.char

package utils;/** * 工具类 * @author tsp * */public class OUtils { public static int ZERO = 0; //零 /** 字符串是否为null或者为"" */ public static boolean isEmpty(String text){ return text == null || text.length() == 0; } /** 字符串是否为null或者"" .

简介

生成一个简单的PDF