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java url转file

java基于x-delayed-type实现延时队列

解决Spring自带的@Async高并发下出现OOM

java替换文本中内容

调用方式：FileUtil.fileToMultipartFile(File)public class FileUtil { public static MultipartFile fileToMultipartFile(File file) { FileItem fileItem = createFileItem(file); MultipartFile multipartFile = new CommonsMultipartFile(fileItem);

一、定义类RSAEncrypt做加解密处理import org.apache.commons.codec.binary.Base64;import org.bouncycastle.openssl.PEMKeyPair;import org.bouncycastle.openssl.PEMParser;import org.bouncycastle.openssl.jcajce.JcaPEMKeyConverter;import javax.crypto.Cipher;import java.i

@GetMapping("/doget") public void doGet(HttpServletResponse response) throws ServletException, IOException { /** 第一步，创建一个Workbook，对应一个Excel文件 */ HSSFWorkbook wb = new HSSFWorkbook(); /** 第二步，在Workbook中添加一个sheet,对应Excel文件中的she

import com.rabbitmq.client.AMQP;import com.rabbitmq.client.Channel;import org.jeecg.modules.interfaces.cdp.entity.CdpTag;import org.jeecg.modules.interfaces.cdp.service.ICdpTagService;import org.springframework.amqp.core.*;import org.springframework.a

案例： 同一队列中，有2个消息A和B，A延时3小时，先进。B延时2小时，后进。那么AB会在3小时后才会被消费。解决方案：通过插件rabbitmq-delayed-message-exchange插件解决延迟功能下载地址启用插件使用命令rabbitmq-plugins enable rabbitmq_delayed_message_exchang启用插件rabbitmq-plugins enable rabbitmq_delayed_message_exchang输出如下：The fo

一、引入pom文件<!--rabbitmq--> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-amqp</artifactId> </dependency>二、配置rabbitmq连接信息spring:

所有pom文件<!-- Quartz定时任务 --><dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-quartz</artifactId></dependency>yml文件所需配置spring: ## quartz定时任务,采用数据库方式 quartz: job-

所需架包<dependency> <groupId>de.mkammerer</groupId> <artifactId>argon2-jvm</artifactId> <version>2.4</version></dependency>代码工具类import org.springframework.security.crypto.password.PasswordEncoder;imp

1.导入架包<dependency> <groupId>com.amazonaws</groupId> <artifactId>aws-java-sdk-s3</artifactId> <version>1.11.347</version></dependency>2.创建工具类import com.amazonaws.auth.AWSStaticCredentialsProvider;impo

需求：用户注册发送新人券，当用户疯狂点击注册按钮会出现多次请求解决方式：使用缓存控制每个用户的访问次数限制1.自定义注解类import java.lang.annotation.*;@Target(ElementType.METHOD)@Retention(RetentionPolicy.RUNTIME)@Documented@Inheritedpublic @interface LimitSubmit { String key() ; /** * 默认 10

HttpPost： httpPost.addHeader("x-access-token",token);public static String post(String strURL, String params, String token) { System.out.println(strURL); System.out.println(params); Map<String,Object> map = new HashMap<&g

注：数据源注入方式以AOP方式写入一、首先获取当前配置文件默认数据源及数据库中配置的所有数据源import java.sql.Connection;import java.sql.PreparedStatement;import java.sql.ResultSet;import java.sql.SQLException;import java.util.HashMap;import java.util.Map;import javax.annotation.Resource;impor

一、生成预支付订单并返回给前端@ApiOperation("订单支付") @PostMapping("/payOrder") public Result<?> payOrder(@RequestParam("orderId")String orderId, @RequestParam("memberId")String memberId, HttpServle

线程主类public class UserThread implements Runnable { WhActivatyReserveService whActivatyReserveService; Memberservice memberservice; String token =""; public UserThread(String token, Memberservice memberservice)

找到目录file-setting-build-build tools-maven-runner 勾选第一个

import javax.servlet.http.HttpServletRequest;import java.net.InetAddress;import java.net.UnknownHostException;/** * IP地址工具类定义 * @author yang.liu */public class IpAddressUtil { public static String getIpAddr(HttpServletRequest request){

#!/bin/sh# # 启动 jar 运行# 项目部署目录projectDir=/www/java/jar/# 项目运行 jar 名称jarName="totolemgm-boot-2.1.4.jar"# 脚本日志目录logDir=/www/java/log/# 项目部署环境profileActive=prod# 这里的-x 参数判断${logDir}是否存在并且是否...

package org.jeecg.modules.interfaces.scrmapplet;import cn.hutool.core.codec.Base64Decoder;import org.apache.commons.lang3.StringUtils;import org.dom4j.Document;import org.dom4j.DocumentHelper;im...

所需importimport com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;import io.micrometer.core.instrument.util.StringUtils;import io.swagger.annotations.Api;import io.swagger.annotatio...

webSocket中//启动类注入setprivate static ApplicationContext applicationContext; public static void setApplicationContext(ApplicationContext context){ applicationContext = context; }@OnM...

配置文件：jeecg : path : #文件上传根目录 设置 upload: D://upFilescentroller:```java@Value(value = "${jeecg.path.upload}")private String uploadpath;@PostMapping(value = "/upload")public Result<...

导入maven<dependency> <groupId>cn.hutool</groupId> <artifactId>hutool-all</artifactId> <version>4.5.11</version></dependency>调用方法，参数为要生成的长度S...

Collections.sort(list集合,new Comparator&lt;实体类&gt;(){ public int compare(实体类 arg0, 实体类 arg1){ return arg1.字段.compareTo(arg0.字段); } });compare中的两个实体类是一个类...

int width = 250; int height = 400; String content = "你好"; File file = new File("E:createImage.jpg"); Font font = new Font("Serif", Font.BOLD, 10); BufferedImage bufferedImage = new Buffer...

当项目没有指定异常处理机制：try catch或者注解等形式，springboot拦截器中的BasicErrorController类会执行拦截，跳转到配置的拦截后跳转的地址，也就是没有登录时跳转的地址。只需要将这个操作默认放行就可以1、@Override protected void addInterceptors(InterceptorRegistry registry) { re...

导入JS文件&lt;script src="/static/wap/js/qrcode.min.js"&gt;&lt;/script&gt;直接引用new QRCode(document.getElementById("qrcode"), "www.baidu.com"); // 设置要生成二维码的链接

if (httpservletrequest == null)return null;String ip = httpservletrequest.getHeader(“X-Forwarded-For”);if (ip == null || ip.length() == 0 || “unknown”.equalsIgnoreCase(ip))ip = httpservletrequest....

//生成MD5public static String getMD5(String message) {String md5 = “”;try {MessageDigest md = MessageDigest.getInstance(“MD5”); // 创建一个md5算法对象byte[] messageByte = message.getBytes(“UTF-8”);byte[]...

package com.arvato.service.akc.api.config;import java.io.BufferedReader;import java.io.IOException;import java.io.InputStreamReader;import java.net.HttpURLConnection;import java.net.URL;import j...

Amore服务器软件安装信息软件信息 服务器IP 账号 密码 端口 备注软件安装信息Nginx 139.219.134.42/172.22.25.4 8060 1.13.8Redis 172.22.9.5/172.22.25.4 Qq11 8061 3.2.10Gitlab 172.22.9.4 root crm_amore 8060 Jdk 172.22.9.4/5 ...

import com.fasterxml.jackson.databind.ObjectMapper;import lombok.extern.slf4j.Slf4j;import org.apache.commons.lang.StringUtils;import org.aspectj.lang.ProceedingJoinPoint;import org.aspectj.lang....

一、获取token值public static Map<String, Object> getToken() {Map<String, Object> data = new HashMap<String, Object>();try {StringBuilder urlSb = new StringBuilder();urlSb.append(“htt...

启动类注入Bean@Beanpublic MultipartConfigElement multipartConfigElement() {MultipartConfigFactory factory = new MultipartConfigFactory();//指定文件代销factory.setMaxFileSize(“5MB”);/// 设定上传文件大小factory.set...

package com.arvato.service.goods.api.config;import net.sf.json.JSONObject;import org.junit.jupiter.api.Test;import java.io.*;import java.net.HttpURLConnection;import java.net.URL;import java.uti...

package com.arvato.utils.util;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import sun.misc.BASE64Decoder;import sun.misc.BASE64Encoder;import javax.crypto.Cipher;import javax.crypto.sp...

比如说有这样的一个页面test1.jsp=======================<a href ="test.jsp?name=wf">跳转到test2.jsp</a>test2.jsp=======================HttpServletRequest req = (HttpServletRequest) request;HttpServl...