Write your own echarts code that calculates the time coordinates

1 data for Database SQL queries

2 Final Echarts draw out of the figure

The 3 code is as follows

Calculating the Main method method

/** * Echarts Calculate the time axis code (calculate the traffic code), here the interval is 5 seconds, a minute of traffic, TotalSize = a ebustreamlist for Ebustream collection, Ebustream properties Totalstream, Time * TotalSize is the x-axis how many points * startTime is the start times * */private string[] Getebustream (list<ebustream> ebustreamlist,int Total Size,string startTime) throws parseexception{string[] Totalstreamarray = new String[totalsize]; String currenttime = startTime; Start time variable int pointer = 0;  Time pointer int counter = 0;//counter for (int i = 0; i < totalsize; i + +) {//traversal start, assign value to each point string nexttime = Chartstimeutil.getnexttime (currenttime, 1);//Next time//check time if (ebustreamlist!=null &&ebustreamlist.size () >pointer) {String CPUTime = ebustreamlist.get (pointer). GetTime ();//Gets the time of the current traffic entity/** * Assuming time is * currenttime = 2016-05-07 22:10:46 * CPUTime = 2016-05-07 22:10:48 * nexttime = 2016-05-07 22:10:51 * then CPUTime in CU Between Rrenttime and Nexttime * Execute if (Chartstimeutil.isbigger (CPUTime, currenttime) && Chartstimeutil.isbigger ( Nexttime, CPUTime)) inside the code * * */IF (Chartstimeutil.isbigger (CPUTime, CurrenttiMe) && Chartstimeutil.isbigger (Nexttime, CPUTime)) {Totalstreamarray[i] = "" +ebustreamlist.get (pointer). Gettotalstream () + "";p ointer++;counter++;} /** * Assuming time is * CPUTime = 2016-05-07 22:10:45 * currenttime = 2016-05-07 22:10:46 * nexttime = 2016-05-07 22:10:51 * then Cputim E on the left side of CurrentTime and Nexttime * Execute the code inside the Else if (Chartstimeutil.isbigger (CurrentTime, CPUTime)) * */else if ( Chartstimeutil.isbigger (CurrentTime, CPUTime)) {pointer++;nexttime = currenttime;i--;} /** * Assuming time is * currenttime = 2016-05-07 22:10:46 * nexttime = 2016-05-07 22:10:51 * CPUTime = 2016-05-07 22:10:53 * then Cputim E on the right side of CurrentTime and Nexttime * Execute the code below else inside * * */else{totalstreamarray[i] = ""; counter++;}} /** * When Ebustreamlist is empty execute the following else code * */else{totalstreamarray[i] = ""; counter++;} CurrentTime = Nexttime; Move the current time down one point}return totalstreamarray;}

Chartstimeutil.getnexttime Method Code

/** * Get the next point of time * private static Calendar calendar = Calendar.getinstance ();  * private static SimpleDateFormat simpledateformat=new SimpleDateFormat ("Yyyy-mm-dd HH:mm:ss"); * chartssnmptimertask.timefrequency=1000 * 5;  Time interval 5 Seconds *  * **/public static string Getnexttime (String currenttime, int next) throws Parseexception{if (currenttime ==null| | Currenttime.replace ("", ""). Equals ("")) return Null;calendar.settime (Simpledateformat.parse (currenttime)); Calendar.set (Calendar.second, Calendar.get (calendar.second) + (chartssnmptimertask.timefrequency/1000) * Next  ) ; return Simpledateformat.format (Calendar.gettime ());}

Chartstimeutil.isbigger Code

/**   * Compare the size between two dates  *   * @param d1  * @param D2  * @return The former greater than the latter returns true conversely false  * @throws ParseException  *  /public static Boolean Isbigger (String time1,  string time2) throws ParseException {  

Ebustream entity class

Package Com.nufront.euht.web.ebu.model;import java.sql.timestamp;/** * EBU Traffic entity * */public class Ebustream {private string id;private int upstream;private int downstream;private int totalstream;private string Time;public string GetId () {R Eturn ID;} public void SetId (String id) {this.id = ID;} public int Getupstream () {return upstream;} public void Setupstream (int upstream) {this.upstream = upstream;} public int Getdownstream () {return downstream;} public void Setdownstream (int downstream) {this.downstream = downstream;} public int Gettotalstream () {return totalstream;} public void Settotalstream (int totalstream) {this.totalstream = Totalstream;} Public String GetTime () {return time;} public void SetTime (String time) {this.time = time;}}

Self-written code that calculates the time coordinates of Echarts