【Java】JFreeChart实现过滤日志画图
【背景】平时都是拿python来画个折线图的，这次自动化的项目需要用java，通过JFreeChart想着也做一份。
（其实完全可以java调用python脚本出图，毕竟用java画图少、图形单一）
【逻辑】
-
传log路径，获取关键字的值的列表：
public void FilterLogValue(String logurl, String startTime, String endTime) -
根据文件名称上的时间戳选择符合指定区间内的log：
public ListSelectLog(String logdir, String stratTime, String endTime) -
画图参数修改：
public JFreeChart createChart(CategoryDataset categoryDateset, String title, String X, String Y) -
JFreeChart画图步骤：
public void DrewPic(CategoryDataset dataset, String title, String X, String Y)
JFreeChart freeChart = createChart(dataset, title, X, Y);
ChartPanel chartf = new ChartPanel(freeChart, true);
JFrame jf = new JFrame();
jf.add(chartf, BorderLayout.WEST);
jf.setVisible(false);
jf.setSize(1400, 600);
jf.setLocationRelativeTo(null);
【代码】
import org.apache.commons.io.FileUtils;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.ChartUtilities;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.labels.StandardCategoryItemLabelGenerator;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.renderer.category.LineAndShapeRenderer;
import org.jfree.data.category.CategoryDataset;
import org.jfree.data.general.DatasetUtilities;
import javax.swing.*;
import java.awt.*;
import java.io.*;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.*;
import java.util.List;
public class DrewPic {
private List<Double> A_RTT_value = new ArrayList<>();
private List<Double> A_loss_value = new ArrayList<>();
private List<Double> A_table_target_bitrate_value = new ArrayList<>();
public void FilterLogValue(String logurl, String startTime, String endTime) throws ParseException {
String line;
Date sTime = stringTimeToDateTime(startTime);
Date eTime = stringTimeToDateTime(endTime);
try (BufferedReader br = new BufferedReader(new FileReader(logurl))) {
while ((line = br.readLine()) != null) {
if (line.contains("CST") && line.contains("INFO")) {
String str = line.substring(0, 23);
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSSS");
Date t = sdf.parse(str);
if (t.after(sTime)) {
}
if (t.after(eTime)) {
break;
}
}
}
}
}
catch (IOException e) {
e.printStackTrace();
}
}
public void DeleteLog(String logdir) throws IOException {
File file = new File(logdir);
FileUtils.cleanDirectory(file);
}
public List<String> SelectLog(String logdir, String stratTime, String endTime) throws ParseException, IOException {
Date sTime = stringTimeToDateTime(stratTime);
Date eTime = stringTimeToDateTime(endTime);
File file = new File(logdir);
if (file.isDirectory()) {
File[] files = file.listFiles();
for (int i = 0; i < files.length; i++) {
if (files[i].getName().contains("webrtc") || files[i].getName().contains("RoomsServiceHost")) {
targetLogList.add(logdir + files[i].getName());
}
}
} else {
if (file.getName().contains("webrtc") || file.getName().contains("RoomsServiceHost")) {
targetLogList.add(logdir + file.getName());
}
}
// 获取每个目标的log的名称上的时间
for (int k = 0; k < targetLogList.size(); k++) {
String logurl = targetLogList.get(k);
File f = new File(logurl);
String time = getTargetTimeName(f);
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSSS");
Date tt = sdf.parse(time);
// 判断含webrtc的log在时间区间内
if (tt.after(sTime) && tt.before(eTime)) {
FilterLogValue(logurl, stratTime, endTime);
}
}
return targetLogList;
}
public String getTargetTimeName(File file) throws ParseException {
String timeName = "";
if (file.getName().contains("webrtc")) {
String yearStr = file.getName().split("-webrtc")[0];
String y = yearStr.substring(0, 4);
String M = yearStr.substring(5, 7);
String d = yearStr.substring(8, 10);
String H = yearStr.substring(11, 13);
String m = yearStr.substring(13, 15);
String s = yearStr.substring(15, 17);
String SSS = yearStr.substring(18, 21);
timeName = y + "-" + M + "-" + d + " " + H + ":" + m + ":" + s + "." + SSS;
}
if (file.getName().contains("RoomsServiceHost")) {
String yearStr = file.getName().split("RoomsServiceHost-")[1].split("_")[0];
String timeStr = file.getName().split("_")[1].split("_pid")[0];
String y = yearStr.substring(0, 4);
String M = yearStr.substring(4, 6);
String d = yearStr.substring(6, 8);
String H = timeStr.substring(0, 2);
String m = timeStr.substring(2, 4);
String s = timeStr.substring(4, 6);
String SSS = timeStr.substring(6, 9);
timeName = y + "-" + M + "-" + d + " " + H + ":" + m + ":" + s + "." + SSS;
}
return timeName;
}
public Date stringTimeToDateTime(String timeStr) throws ParseException {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSSS");
Date dateTime = sdf.parse(timeStr);
return dateTime;
}
public void DrewLogPicBaAudio() {
CategoryDataset dataset = createDataSetAudio();
DrewPic(dataset, "[BA] Audio", "", "");
}
public JFreeChart createChart(CategoryDataset categoryDateset, String title, String X, String Y) {
// 创建JFreeChart对象：ChartFactory.createLineChart
JFreeChart jfreechart = ChartFactory.createLineChart(title, // 标题
X, //categoryAxisLabel （category轴，横轴，X轴标签）
Y, // valueAxisLabel（value轴，纵轴，Y轴的标签）
categoryDateset, //Dataset
PlotOrientation.VERTICAL, true, // legend
true, //Tooltips
true); //URLs
// 使用CategoryPlot设置各种参数。
CategoryPlot plot = (CategoryPlot) jfreechart.getPlot();
// 背景色 透明度
plot.setBackgroundAlpha(0.5f);
// 前景色 透明度
plot.setForegroundAlpha(1.0f);
// 其他设置 参考 CategoryPlot类
LineAndShapeRenderer renderer = (LineAndShapeRenderer) plot.getRenderer();
renderer.setBaseShapesVisible(true); // series 点（即数据点）可见
renderer.setBaseLinesVisible(true); // series 点（即数据点）间有连线可见
renderer.setUseSeriesOffset(true); // 设置偏移量
renderer.setBaseItemLabelGenerator(new StandardCategoryItemLabelGenerator());
renderer.setBaseItemLabelsVisible(false); //秒点数据
SimpleDateFormat formatter = new SimpleDateFormat("HH-mm-ss-SSS");
Date date = new Date(System.currentTimeMillis());
saveAsFile(jfreechart, "/Users/mickey.mei/Desktop/" + formatter.format(date) + ".png", 600, 400);
return jfreechart;
}
public void saveAsFile(JFreeChart jfreechart, String outputPath, int weight, int height) {
FileOutputStream out = null;
try {
File outFile = new File(outputPath);
if (!outFile.getParentFile().exists()) {
outFile.getParentFile().mkdirs();
}
out = new FileOutputStream(outputPath);
// 保存为PNG
ChartUtilities.writeChartAsPNG(out, jfreechart, weight, height);
// 保存为JPEG
// ChartUtilities.writeChartAsJPEG(out, chart, weight, height);
out.flush();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
if (out != null) {
try {
out.close();
} catch (IOException e) {
// do nothing
}
}
}
}
public CategoryDataset createDataSetAudio() {
String[] rowKeys = {"rtt", "loss", "bitrate"};
String[] colKeys = new String[A_RTT_value.size()];
for (int i = 0; i < A_RTT_value.size(); i++) {
colKeys[i] = String.valueOf(i);
}
double[] colData1 = new double[A_RTT_value.size()];
for (int j = 0; j < A_RTT_value.size(); j++) {
colData1[j] = A_RTT_value.get(j);
}
double[] colData2 = new double[A_RTT_value.size()];
for (int j = 0; j < A_RTT_value.size(); j++) {
colData2[j] = A_loss_value.get(j);
}
double[] colData3 = new double[A_RTT_value.size()];
for (int j = 0; j < A_RTT_value.size(); j++) {
colData3[j] = A_table_target_bitrate_value.get(j);
}
double[][] data = new double[rowKeys.length][colKeys.length];
data[0] = colData1;
data[1] = colData2;
data[2] = colData3;
return DatasetUtilities.createCategoryDataset(rowKeys, colKeys, data);
}
public void DrewPic(CategoryDataset dataset, String title, String X, String Y) {
JFreeChart freeChart = createChart(dataset, title, X, Y);
ChartPanel chartf = new ChartPanel(freeChart, true);
JFrame jf = new JFrame();
jf.add(chartf, BorderLayout.WEST);
jf.setVisible(false);
jf.setSize(1400, 600);
jf.setLocationRelativeTo(null);
}
}