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正则表达式截取字符串内容 Pattern pattern = Pattern.compile("(\\{)(.+?)(\\})"); String test = "callback( {\"client_id\":\"222222\",\"openid\":\"122121\",\"unionid\":\"ddddddddd\"} );"; Matcher ma...

package com.jc.chile.booksgrab.utils; import com.qcloud.cos.exception.CosClientException; import com.qcloud.cos.exception.CosServiceException; import com.qcloud.cos.model.*; import com.qcloud.cos.CO...

//get请求 public static String sendGet(String url, String param) throws Exception{         StringBuffer result = new StringBuffer();         BufferedReader br = null;         try {             if(p

String str = "https://www.xxxx.com:8080/images/1.jpg"; java.net.URL  url = new  java.net.URL(str); String host = url.getHost();//获取主机名 System.out.println(url.getPort());//端口号，若是没有端口号返回 -1 System.out...

import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.image.BufferedImage; import java.io.File; import java.net.URL; import javax.imageio.ImageIO; public class Test { publ...

1.发布到远程仓库 pom.xml配置远程仓库 2.发布到远程仓库（IDEA） 3.在pom.xml中添加依赖

import javax.imageio.ImageIO; import javax.imageio.stream.ImageOutputStream; import java.awt.*; import java.awt.image.BufferedImage; import java.io.ByteArrayInputStream; import java.io.ByteArrayOutpu...

//验证为空 public static <T> boolean isEmpty(T obj){ return !isNotEmpty(obj); } //验证非空 public static <T> boolean isNotEmpty(T obj){ if(obj != null){ if(obj instance...