Programmer Think

In general, RESTful is to return json. Sometimes it may be necessary to return xml. What should we do? Jackson Maven adds jar file import <dependency> <groupId>com.fasterxml.jackson.dataformat</groupId> <artifactId>jackson-dataformat-xml</artifactId> </dependency& ...

Deep copy refers to copying a reference type (including the reference types in the type) to a copy (completely two objects in memory, without any reference relationship)...... direct code: 1 /// <summary> 2 /// Deep copy of object (serialization) 3 /// </summary> 4 public static class MyDeepCopy 5 { 6 7 ...

Integration steps Import related jar package <!--junit--> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.12</version> </dependency> <!--mybatis--> <dependency> <groupId>org.mybatis& ...

** Install Centos6 **1, Download the CentOS 6.10 installation package, link . Install in VMWare. 2, Set virtual machine fixed ip Edit - > virtual network editor - > device NAT mode - > View gateway. Right click virtual machine - > set NAT mode 2. Modify the network card configuration. ...

Spring boot project integrates websocket to realize connectivity brief introduction pom.xml introduces dependency Create websocket configuration file for spring boot project websocketServer core code An entity class not understood, annotated to be solved js of front-end page, creating websocket for ...

1, Writing process First create a web project using IDEA 1. Download the latest Spring development package (jar package) 2. Copy the jar package to the project project (under lib) 3. Write the core configuration file, for example (applicationContext.xml) 4. Read the Spring configuration file ...

Catalog 1.idea configures maven warehouse (alicloud image) 2. Use IDEA to quickly build springboot project 1. Select project construction method: default to go to official website. 2. Fill in project information 3. Select dependent components 4. Project name and project path 3. Running the spr ...

I. overview 1.1 ask questions Spring MVC is a part of spring. Do you need to integrate spring MVC? Do you need to add Spring's IOC container? Do you need to configure the ContextLoadListener in the web.xml file to start the Spring IOC container? 1.2 problem solving Need. The configuration fil ...

Prerequisite Tomcat 7.0.90 Method 1: modify the configuration file Add a sub label in < host > in the TOMCAT_HOME/conf/server.xml configuration file: <Context docBase="C:\exambase\" path="/img"/> Method 2: add Servlet Create a new application, add the following Servlet, deploy the application and start Tomcat. package com.lun.se ...

Let's talk about the last step of preparing to upgrade presto, because the pre deployed Presto machine itself deployed a CDH cluster (customer's home), and the machine was Centos6.x. according to the JDK on the Cloudrea official website, it can't move. Later, it was found that his JDK environment variab ...