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Spring boot series (9) minutes to upload files Previous recommendationSpring boot series (I) idea new spring boot project Introduction to SpringBoot series (2) Spring boot series (3) configuration file details Spring boot series (IV) detailed explanation of web static resource configuration Spring boot series (V) Mybatis integrated full detaile ...

Cluster construction helps us to understand how the cluster works, so that we can better understand the high availability, replica fault tolerance mechanism and high performance of es. Role assignment in es Master node Parameter: node.master: true Because the real master node is elected by multiple nodes with master node qualification. Therefo ...

Personalized token background Last article Spring Security OAuth personalized token (I) It is mentioned that the default message format returned by oauth2.0 interface is as follows: {     "access_token": "e6669cdf-b6cd-43fe-af5c-f91a65041382",     "token_type": "bearer",     "refresh_token": "da91294d-446c-4a89-bdcf-88aee15a75e8",     " ...

1. Import jar dependency package: ant-1.9.7.jar commons-net-3.3.jar Baidu online: https://pan.baidu.com/s/1u7m5NYans-UK_h8VSEPfbA Extraction code: qy12 2. Create a tool class DownloadFileUtil.java and write the following code: package com.zghky.utils; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStrea ...

Author: yizhiwazi www.jianshu.com/p/5eb000544dd7 Spring Boot integrated e-mail service is so simple that it can quickly grasp the core logic of e-mail business class and the daily service of enterprise e-mail. What is SMTP? The full name of SMTP is Simple Mail Transfer Protocol, which is a set of specifications used to transfer mail from the ...

Hello, brothers, this time to exchange two questions with the old fellow, exception and parameter checking. Before we talk about parameter checking, let's first talk about exception handling, because the latter parameter checking involves exception handling. exception handling When it comes to exception handling, I don't know if you've written ...

##Install elasticsearch on linux 1. Download elasticsearch Go directly to the official website of elasticsearch and download the latest installation package: https://www.elastic.co/downloads/elasticsearch, this tutorial uses version 5.1.1. 2, Install elasticsearch Upload the downloaded installation package to centos, or download it directly f ...

Category Column: spring statemachine Article Tag: spring boot spring Statemachine Java state machine Copyright Statement: This is an original blogger article, which follows the CC 4.0 BY-SA copyright agreement. Please attach a link to the original source and this statement for reproduction. Link to this article: https://blog.csdn.net/firebat/ar ...

json is often used in projects, such as fastjson, Jackson, and so on. Sometimes for uniformity, we usually agree to use one. Either way, when Spring MVC returns data of the previous Long type, js loses precision in obtaining the data, which results in inaccurate data. The solution is to convert Long type data to String type when serializing. Wh ...

Getting Started with Spring Cloud Micro-Services and Micro-Service Architecture Micro-service architecture is a new system architecture.Its design idea is to split the single architecture system into several independent running applets which can be called and cooperated with each other.The capabilities that each applet provides to the overal ...