Introduction I start I made the new spring starter project in sts4. But I checked the unknown error in pom.xml. Subject Why do these errors occur? When the spring framework builds and compiles, depend on maven. Something went wrong here and there was an error. I don't know the specific reason. How do fix these error? Default pom.xml exists the only java.version in . Add maven version 3.1.1 in . ..

Introduction Highcharts.js is a popular library to draw several graphs like dot, bar, heatmap, etc... I like Highcharts.js and I've used Highcharts.js many times. However, if you want to use highcharts.js, the license must be verified and used. To get a free license, you only must use highcharts.js on a personal website or non-profit organization. Subject 1. About Highcharts is a battle-tested S..

Introduction I introduce how to use spatial type columns in MySQL and JPA. Subject I introduce how to use spatial type columns in MySQL and JPA. MySQL has spatial data types that correspond to OpenGIS classes. Some spatial data types hold single geometry values. GEOMETRY POINT LINESTRING POLYGON GEOMETRY can store geometry values of any type. The other single value types(POINT, LINESTRING, and P..

Introduction I have used the promise pattern to simplify callback function syntax in javascript(ES6). But when use the promise pattern in IE, the promise pattern can't use in IE because of not compatible in IE. RSVP.js provides simple tools for organizing asynchronous code. Specifically, it is a tiny implementation of Promises/A+. It works in node and the browser (IE9+, all the popular evergreen..