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需求：

        后端根据数据自动生成2个图片，然后把两张图片合并成一张图片，再发到钉钉群里，涉及到定时生成和推送，当时我们测试同事说他们写定时脚本放到服务器上，然后让我提供生成图片的方法和钉钉机器人的逻辑

天下文字一大抄，集各位大佬精华，最后成果如下

 

 

依赖

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd"><modelVersion>4.0.0</modelVersion><parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>2.6.6</version><relativePath/> <!-- lookup parent from repository --></parent><groupId>com.example</groupId><artifactId>demo</artifactId><version>0.0.1-SNAPSHOT</version><name>imagedemo</name><description>Demo project for Spring Boot</description><properties><java.version>8</java.version></properties><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><scope>test</scope></dependency><!--柱状图制作引入--><dependency><groupId>org.jfree</groupId><artifactId>jfreechart</artifactId><version>1.0.19</version></dependency><!--oss引入--><dependency><groupId>com.aliyun.oss</groupId><artifactId>aliyun-sdk-oss</artifactId><version>3.15.1</version></dependency><dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId><version>1.18.22</version></dependency><!--钉钉机器人引入--><dependency><groupId>com.aliyun</groupId><artifactId>alibaba-dingtalk-service-sdk</artifactId><version>2.0.0</version></dependency><!--常用工具类--><dependency><groupId>cn.hutool</groupId><artifactId>hutool-all</artifactId><version>5.8.20</version></dependency></dependencies><build><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId></plugin></plugins></build></project>

配置  

 

server:port: 9111#oss配置
aliyun:oss:enable: truename: aliossaccessKey: xxxsecretKey: xxxbucketName: xxxendpoint: xxxpathPrefix: xxx                  #生成图片所在的文件夹
#钉钉机器人
sys:pe:dingtalk:robotMsgUrl: xxxurlsecret: xxx

配置类 

package com.example.demo.config;import lombok.Data;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;@Data
@Component
@ConfigurationProperties(prefix = "sys.pe.dingtalk")
public class DingTalkConfig {private String robotMsgUrl;  //系统预警机器人推送群地址private String secret;  //系统预警机器人推送群地址
}

 

package com.example.demo.config;import lombok.Data;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;@Data
@Component
@ConfigurationProperties(prefix = "aliyun.oss")
public class OssConfig {private String endpoint;private String accessKey;private String secretKey;private String bucketName;  //桶名称private String pathPrefix;   //生成文件路径前缀}

module【除serie外，另外一个根据自己需求自行确定是否要用】 

 

package com.example.demo.model;import java.io.Serializable;
import java.util.Vector;/*** @author zsl0* created on 2023/7/6 17:51*/
public class Serie implements Serializable {private static final long serialVersionUID = 1L;private String name;// 名字private Vector<Object> data;// 数据值public Serie() {}/**** @param name*            名称（线条名称）* @param data*            数据（线条上的所有数据值）*/public Serie(String name, Vector<Object> data) {this.name = name;this.data = data;}/**** @param name*            名称（线条名称）* @param array*            数据（线条上的所有数据值）*/public Serie(String name, Object[] array) {this.name = name;if (array != null) {data = new Vector<Object>(array.length);for (int i = 0; i < array.length; i++) {data.add(array[i]);}}}public String getName() {return name;}public void setName(String name) {this.name = name;}public Vector<Object> getData() {return data;}public void setData(Vector<Object> data) {this.data = data;}}

package com.example.demo.model;import lombok.AllArgsConstructor;
import lombok.Builder;
import lombok.Data;
import lombok.NoArgsConstructor;@Data
@AllArgsConstructor
@NoArgsConstructor
@Builder
public class SystemApiCount {private String systemName;private Integer count;
}

 生成图片util

package com.example.demo.utils;import com.example.demo.model.Serie;
import lombok.extern.slf4j.Slf4j;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.StandardChartTheme;
import org.jfree.chart.axis.CategoryAxis;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.axis.ValueAxis;
import org.jfree.chart.labels.StandardCategoryItemLabelGenerator;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.DefaultDrawingSupplier;
import org.jfree.chart.plot.PieLabelLinkStyle;
import org.jfree.chart.renderer.category.BarRenderer;
import org.jfree.chart.renderer.category.StandardBarPainter;
import org.jfree.chart.renderer.xy.StandardXYBarPainter;
import org.jfree.data.category.DefaultCategoryDataset;
import org.jfree.ui.RectangleInsets;import java.awt.*;
import java.util.Vector;/*** Jfreechart工具类* <p>* 解决中午乱码问题<br>* 用来创建类别图表数据集、创建饼图数据集、时间序列图数据集<br>* 用来对柱状图、折线图、饼图、堆积柱状图、时间序列图的样式进行渲染<br>* 设置X-Y坐标轴样式* <p>** @author chenchangwen* @since:2014-2-18*/
@Slf4j
public class ChartUtil {private static String NO_DATA_MSG = "数据加载失败";private static Font FONT = new Font("宋体", Font.PLAIN, 12);
//    public static Color[] CHART_COLORS = {
//            new Color(22, 102, 149), new Color(92, 92, 97), new Color(144, 237, 125), new Color(255, 188, 117),
//            new Color(60, 142, 116), new Color(255, 117, 153), new Color(253, 236, 109), new Color(128, 133, 232),
//            new Color(43, 66, 147), new Color(255, 204, 102)};// 颜色public static Color[] CHART_COLORS = {new Color(12, 250, 194, 195), new Color(16, 161, 246), new Color(22, 102, 149)};// 颜色static {setChartTheme();}public ChartUtil() {}/*** 中文主题样式 解决乱码*/private static void setChartTheme() {// 设置中文主题样式 解决乱码StandardChartTheme chartTheme = new StandardChartTheme("CN");// 设置标题字体chartTheme.setExtraLargeFont(FONT);// 设置图例的字体chartTheme.setRegularFont(FONT);// 设置轴向的字体chartTheme.setLargeFont(FONT);chartTheme.setSmallFont(FONT);chartTheme.setTitlePaint(new Color(51, 51, 51));chartTheme.setSubtitlePaint(new Color(85, 85, 85));chartTheme.setLegendBackgroundPaint(Color.WHITE);// 设置标注chartTheme.setLegendItemPaint(Color.BLACK);//chartTheme.setChartBackgroundPaint(Color.WHITE);// 绘制颜色绘制颜色.轮廓供应商// paintSequence,outlinePaintSequence,strokeSequence,outlineStrokeSequence,shapeSequencePaint[] OUTLINE_PAINT_SEQUENCE = new Paint[]{Color.WHITE};// 绘制器颜色源DefaultDrawingSupplier drawingSupplier = new DefaultDrawingSupplier(CHART_COLORS, CHART_COLORS, OUTLINE_PAINT_SEQUENCE,DefaultDrawingSupplier.DEFAULT_STROKE_SEQUENCE, DefaultDrawingSupplier.DEFAULT_OUTLINE_STROKE_SEQUENCE,DefaultDrawingSupplier.DEFAULT_SHAPE_SEQUENCE);chartTheme.setDrawingSupplier(drawingSupplier);chartTheme.setPlotBackgroundPaint(Color.WHITE);// 绘制区域chartTheme.setPlotOutlinePaint(Color.WHITE);// 绘制区域外边框chartTheme.setLabelLinkPaint(new Color(8, 55, 114));// 链接标签颜色chartTheme.setLabelLinkStyle(PieLabelLinkStyle.CUBIC_CURVE);chartTheme.setAxisOffset(new RectangleInsets(5, 12, 5, 12));chartTheme.setDomainGridlinePaint(new Color(192, 208, 224));// X坐标轴垂直网格颜色chartTheme.setRangeGridlinePaint(new Color(192, 192, 192));// Y坐标轴水平网格颜色chartTheme.setBaselinePaint(Color.WHITE);chartTheme.setCrosshairPaint(Color.BLUE);// 不确定含义chartTheme.setAxisLabelPaint(new Color(51, 51, 51));// 坐标轴标题文字颜色chartTheme.setTickLabelPaint(new Color(67, 67, 72));// 刻度数字chartTheme.setBarPainter(new StandardBarPainter());// 设置柱状图渲染chartTheme.setXYBarPainter(new StandardXYBarPainter());// XYBar 渲染chartTheme.setItemLabelPaint(Color.black);chartTheme.setThermometerPaint(Color.white);// 温度计ChartFactory.setChartTheme(chartTheme);}/*** 创建类别数据集合*/public static DefaultCategoryDataset createDefaultCategoryDataset(Vector<Serie> series, String[] categories) {DefaultCategoryDataset dataset = new DefaultCategoryDataset();for (Serie serie : series) {String name = serie.getName();Vector<Object> data = serie.getData();if (data != null && categories != null && data.size() == categories.length) {for (int index = 0; index < data.size(); index++) {String value = data.get(index) == null ? "" : data.get(index).toString();if (isPercent(value)) {value = value.substring(0, value.length() - 1);}if (isNumber(value)) {dataset.setValue(Double.parseDouble(value), name, categories[index]);}}}}return dataset;}/*** 设置柱状图渲染** @param plot             绘图* @param isShowDataLabels*/public static void setBarRenderer(CategoryPlot plot, boolean isShowDataLabels) {plot.setNoDataMessage(NO_DATA_MSG);plot.setInsets(new RectangleInsets(10, 20, 5, 20));// 设置柱状图样式BarRenderer renderer = (BarRenderer) plot.getRenderer();renderer.setBaseItemLabelGenerator(new StandardCategoryItemLabelGenerator());//设置每个柱子之间的距离【柱子之间的距离和柱子的最大宽度以及你生成的图片的宽度，这三个参数应该挺有关系会影响展示】renderer.setItemMargin(-3);renderer.setMaximumBarWidth(0.015);// 设置柱子最大宽度for (int i = 0; i < CHART_COLORS.length; i++) {// 设置柱子颜色renderer.setSeriesPaint(i, CHART_COLORS[i]);}renderer.setShadowVisible(false); // 去除阴影效果// 设置轴样式jfCategoryAxis domainAxis = plot.getDomainAxis();domainAxis.setTickLabelFont(new Font("宋体", Font.PLAIN, 14)); // 设置X轴上提示文字样式domainAxis.setLabelFont(new Font("宋体", Font.PLAIN, 15)); // 设置X轴下的标签文字domainAxis.setTickLabelInsets(new RectangleInsets(10, 20, 5, 20));
//        domainAxis.setTickMarksVisible(false);  // 坐标轴标尺不显示
//        domainAxis.setCategoryLabelPositions(CategoryLabelPositions.UP_45);  //X轴刻度倾斜45度NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();rangeAxis.setTickLabelFont(new Font("宋体", Font.PLAIN, 14));  // 设置Y轴的提示文字样式rangeAxis.setLabelFont(new Font("宋体", Font.PLAIN, 15));rangeAxis.setTickLabelsVisible(false);   //y轴数值不显示plot.setRangeGridlinesVisible(false);   //数据轴网格不显示
//        rangeAxis.setLowerMargin(0.35); // 设置最低的一个 Item 与图片底端的距离
//        rangeAxis.setUpperMargin(0.45); // 设置最高的一个 Item 与图片顶端的距离
//        rangeAxis.setUpperBound(8000.0);  // 设置Y轴的最大值if (isShowDataLabels) {renderer.setBaseItemLabelsVisible(true);}setXAixs(plot);setYAixs(plot);}/*** 设置类别图表(CategoryPlot) X坐标轴线条颜色和样式** @param plot 绘图*/private static void setXAixs(CategoryPlot plot) {Color lineColor = new Color(31, 121, 170);plot.getDomainAxis().setAxisLinePaint(lineColor);// X坐标轴颜色plot.getDomainAxis().setTickMarkPaint(lineColor);// X坐标轴标记|竖线颜色}/*** 设置类别图表(CategoryPlot) Y坐标轴线条颜色和样式 同时防止数据无法显示** @param plot 绘图*/private static void setYAixs(CategoryPlot plot) {Color lineColor = new Color(192, 208, 224);ValueAxis axis = plot.getRangeAxis();axis.setAxisLinePaint(lineColor);// Y坐标轴颜色axis.setTickMarkPaint(lineColor);// Y坐标轴标记|竖线颜色// 隐藏Y刻度axis.setAxisLineVisible(false);axis.setTickMarksVisible(false);// Y轴网格线条plot.setRangeGridlinePaint(new Color(192, 192, 192));plot.setRangeGridlineStroke(new BasicStroke(1));plot.getRangeAxis().setUpperMargin(0.1);// 设置顶部Y坐标轴间距,防止数据无法显示plot.getRangeAxis().setLowerMargin(0.1);// 设置底部Y坐标轴间距}/*** 是不是一个%形式的百分比** @param str* @return*/private static boolean isPercent(String str) {return str != null ? str.endsWith("%") && isNumber(str.substring(0, str.length() - 1)) : false;}/*** 是不是一个数字** @param str* @return*/private static boolean isNumber(String str) {return str != null ? str.matches("^[-+]?(([0-9]+)((([.]{0})([0-9]*))|(([.]{1})([0-9]+))))$") : false;}}

阿里云oss上传util 

package com.example.demo.utils;import cn.hutool.core.date.DatePattern;
import cn.hutool.core.date.DateUtil;
import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import com.example.demo.config.OssConfig;
import lombok.extern.slf4j.Slf4j;
import org.springframework.context.annotation.Configuration;import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.util.Date;
import java.util.UUID;@Slf4j
@Configuration
public class OssUploadUtil {public static String uploadImage(String filPath, OssConfig ossConfig) throws IOException {OSS ossClient = null;InputStream inputStream = null;try {// 创建OSSClient实例。ossClient = new OSSClientBuilder().build(ossConfig.getEndpoint(), ossConfig.getAccessKey(), ossConfig.getSecretKey());//生成任意文件名称UUID uuid = UUID.randomUUID();String imagePath = ossConfig.getPathPrefix() + "/" + DateUtil.format(new Date(System.currentTimeMillis()), DatePattern.NORM_DATE_PATTERN) + "/" + uuid + ".png";// 数据流inputStream = new FileInputStream(filPath);// 填写Bucket名称和Object完整路径。Object完整路径中不能包含Bucket名称。ossClient.putObject(ossConfig.getBucketName(), imagePath, inputStream);String key = imagePath;System.out.println("imagePath = " + imagePath);//因为申请公司内的阿里云oss桶的时候，oss生成的图片所在的文件夹权限继承于桶，那么生成这个链接之后就不能被公网访问，当时公司要求文件夹权限或图片权限不能改成公共读，所以就采用了生成的url链接拼接有效期的形式Date expiration = new Date(new Date().getTime() + 1000 * 60 * 60 * 24 * 365);  //设置从此刻开始一年有效URL url = ossClient.generatePresignedUrl(ossConfig.getBucketName(), key, expiration);return url.toString();} catch (Exception e) {log.error("sso upload error", e);} finally {// 关闭OSSClient和数据流【一定要关闭，否则会失败】if (ossClient != null) ossClient.shutdown();if (inputStream != null) inputStream.close();}return "";}}

钉钉机器人uitl 

package com.example.demo.utils;import com.dingtalk.api.DefaultDingTalkClient;
import com.dingtalk.api.DingTalkClient;
import com.dingtalk.api.request.OapiRobotSendRequest;
import com.dingtalk.api.response.OapiRobotSendResponse;
import com.example.demo.config.DingTalkConfig;
import com.taobao.api.ApiException;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.codec.binary.Base64;import javax.crypto.Mac;
import javax.crypto.spec.SecretKeySpec;
import java.net.URLEncoder;@Slf4j
public class DingTalkUtil {/*** 图片语法** @param phone*/public static void sendRobotMessage(String phone, String imageUrl, DingTalkConfig dingTalkConfig) throws Exception {try {Long timestamp = System.currentTimeMillis();String sign = getSign(dingTalkConfig.getSecret(), timestamp);DingTalkClient client = new DefaultDingTalkClient(dingTalkConfig.getRobotMsgUrl() + "&sign=" + sign + "&timestamp=" + timestamp);OapiRobotSendRequest request = new OapiRobotSendRequest();request.setMsgtype("markdown");OapiRobotSendRequest.Markdown markdown = new OapiRobotSendRequest.Markdown();markdown.setTitle("测试图片");
//            markdown.setText(" @" + phone + "  \n  " +
//                    "![这是一张图片](" + imageUrl + ")");markdown.setText("![这是一张图片](" + imageUrl + ")");request.setMarkdown(markdown);//@全体，如果要@单独几个人再去看钉钉机器人推送相关文档OapiRobotSendRequest.At at = new OapiRobotSendRequest.At();
//            at.setAtUserIds(Arrays.asList(userId));
//          isAtAll类型如果不为Boolean，请升级至最新SDKat.setIsAtAll(Boolean.TRUE);request.setAt(at);OapiRobotSendResponse response = client.execute(request);System.out.println(response.getBody());} catch (ApiException e) {e.printStackTrace();}}//钉钉机器人推送设置加签方式推送public static String getSign(String secret, Long timestamp) throws Exception {String stringToSign = timestamp + "\n" + secret;Mac mac = Mac.getInstance("HmacSHA256");mac.init(new SecretKeySpec(secret.getBytes("UTF-8"), "HmacSHA256"));byte[] signData = mac.doFinal(stringToSign.getBytes("UTF-8"));String sign = URLEncoder.encode(new String(Base64.encodeBase64(signData)), "UTF-8");return sign;}
}

 图片合并util

package com.example.demo.utils;import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;public class ImageConnectUtil {//图片垂直合并public static void connectImageWidthVertical(String topImagePath, String bottomImagePath, String targetImagePath) throws IOException {BufferedImage topBufImage = ImageIO.read(new File(topImagePath));BufferedImage bottomBufImage = ImageIO.read(new File(bottomImagePath));int connImageWidth = Math.max(topBufImage.getWidth(), bottomBufImage.getHeight()); //目标图片宽度int connImageHeight = topBufImage.getHeight() + bottomBufImage.getHeight() + 40;   //目标图片高度=第一个图片高度+第二个图片高度+两个图片之间间距BufferedImage connImage = new BufferedImage(connImageWidth, connImageHeight, BufferedImage.TYPE_INT_RGB);Graphics connGraphics = connImage.getGraphics();connGraphics.fillRect(0, 0, connImageWidth, connImageHeight);  //设置目标图片底部为白色connGraphics.setColor(Color.white);//第一张图左上角坐标为(0, 0)connGraphics.drawImage(topBufImage, 0, 0, null);connGraphics.drawImage(bottomBufImage, 0, topBufImage.getHeight() + 40, null);  //第二张图片在第一章图片40px高的位置下边String targetFileName = targetImagePath.split("\\.")[1];ImageIO.write(connImage, targetFileName, new File(targetImagePath));}}

 测试类

package com.example.demo;import cn.hutool.core.date.DatePattern;
import cn.hutool.core.date.DateUtil;
import com.example.demo.config.DingTalkConfig;
import com.example.demo.config.OssConfig;
import com.example.demo.model.Serie;
import com.example.demo.model.SystemApiCount;
import com.example.demo.utils.ChartUtil;
import com.example.demo.utils.DingTalkUtil;
import com.example.demo.utils.ImageConnectUtil;
import com.example.demo.utils.OssUploadUtil;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartUtilities;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.block.BlockBorder;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.title.TextTitle;
import org.jfree.data.category.DefaultCategoryDataset;
import org.jfree.ui.RectangleEdge;
import org.jfree.ui.RectangleInsets;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;import java.awt.*;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.List;
import java.util.*;
import java.util.stream.Collectors;@SpringBootTest
public class TestImageJF {@Autowiredprivate DingTalkConfig dingTalkConfig;@Autowiredprivate OssConfig ossConfig;@Testpublic void testCreateImage() throws Exception {String fileName1 = UUID.randomUUID().toString();//创建image文件夹String dirPath = createFolder("image") + File.separator + fileName1 + ".png";System.out.println("dirPath = " + dirPath);//获取创建的图片地址1createImage(dirPath);//获取创建的图片地址2String dirPath2 = createFolder("image") + File.separator + fileName1 + ".png";createImage(dirPath2);//合并图片1和图片2String dirPath3 = createFolder("image") + File.separator + fileName1 + ".png";ImageConnectUtil.connectImageWidthVertical(dirPath, dirPath2, dirPath3);//sso上传图片，获得公网下的图片urlString uploadUrl = OssUploadUtil.uploadImage(dirPath3, ossConfig);System.out.println("uploadUrl = " + uploadUrl);//钉钉上传图片//钉钉机器人发送图片消息String phone = "19890909090";DingTalkUtil.sendRobotMessage(phone, uploadUrl, dingTalkConfig);//删除在项目中生成的图片deleteFile(dirPath);deleteFile(dirPath2);deleteFile(dirPath3);}//生成image文件夹public String createFolder(String folderName) {String path = System.getProperty("user.dir");//create folderString dirPath = path + File.separator + folderName;File dir = new File(dirPath);dir.mkdirs();return dirPath;}//删除图片private void deleteFile(String filePath) {File file = new File(filePath);if (file.isFile() && file.exists()) {boolean delete = file.delete();System.out.println("delete = " + delete);}}public void createImage(String fileLocation) throws IOException {FileOutputStream fileOutputStream = null;try {//获取所有系统的接口数量List<SystemApiCount> systemApiCounts = new ArrayList<>();int count = 900;String prefix = "xx中心";for (int i = 0; i < 16; i++) {systemApiCounts.add(SystemApiCount.builder().systemName(prefix + i).count(count).build());count -= 50;}//获取所有系统的执行用例数List<SystemApiCount> systemUseCaseExecCounts = new ArrayList<>();int useCaseCount = 900;for (int i = 0; i < 16; i++) {systemUseCaseExecCounts.add(SystemApiCount.builder().systemName(prefix + i).count(useCaseCount).build());useCaseCount -= 50;}//获取所有系统的失败用例数List<SystemApiCount> failUseCaseExecCounts = new ArrayList<>();int failedUseCaseCount = 900;for (int i = 0; i < 16; i++) {failUseCaseExecCounts.add(SystemApiCount.builder().systemName(prefix + i).count(failedUseCaseCount).build());failedUseCaseCount -= 50;}//        // 创建数据系列List<String> systemName = systemApiCounts.stream().map(SystemApiCount::getSystemName).filter(Objects::nonNull).distinct().collect(Collectors.toList());//数据分别根据中心排序List<Integer> apiCounts = systemApiCounts.stream().sorted(Comparator.comparing(item -> systemName.indexOf(item.getSystemName()))).map(SystemApiCount::getCount).collect(Collectors.toList());List<Integer> useCaseExecCounts = systemUseCaseExecCounts.stream().sorted(Comparator.comparing(item -> systemName.indexOf(item.getSystemName()))).map(SystemApiCount::getCount).collect(Collectors.toList());List<Integer> failUseCaseExecCountList = failUseCaseExecCounts.stream().sorted(Comparator.comparing(item -> systemName.indexOf(item.getSystemName()))).map(SystemApiCount::getCount).collect(Collectors.toList());Serie serie1 = new Serie("调用接口数", new Vector<>(apiCounts));Serie serie2 = new Serie("超时接口数", new Vector<>(useCaseExecCounts));Serie serie3 = new Serie("失败接口数", new Vector<>(failUseCaseExecCountList));// 创建数据集DefaultCategoryDataset dataset = ChartUtil.createDefaultCategoryDataset(new Vector<>(Arrays.asList(serie1, serie2, serie3)),systemName.toArray(new String[systemName.size()]));// 创建柱状图String title = DateUtil.format(new Date(System.currentTimeMillis()), DatePattern.CHINESE_DATE_PATTERN) + "系统接入接口监控情况";JFreeChart chart = ChartFactory.createBarChart(title,     // 图表标题"",              // X轴标题"",                 // Y轴标题dataset,                 // 数据集PlotOrientation.VERTICAL,// 图表方向
//                PlotOrientation.HORIZONTAL,// 图表方向true,                    // 是否显示图例true,                    // 是否生成工具提示false                    // 是否生成URL链接);chart.setTitle(new TextTitle(title, new Font("宋体", Font.BOLD, 20)));chart.getTitle().setMargin(18, 0, 0, 0);chart.getTitle().setPaint(Color.GREEN);chart.getLegend().setFrame(new BlockBorder(Color.WHITE));chart.getLegend().setPosition(RectangleEdge.TOP);//设置图例在顶部chart.getLegend().setItemFont(new Font("宋体", Font.PLAIN, 14)); //设置图例大小chart.getLegend().setItemLabelPadding(new RectangleInsets(2, 2, 2, 2));  //设置图例位置chart.getLegend().setMargin(18, 0, 0, 0); //这样就只是距离右边有距离 margin 18chart.getRenderingHints().put(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_OFF);chart.setBorderVisible(true);  //设置图片边框显示chart.setBorderPaint(Color.BLACK); //图片边框颜色//            StandardChartTheme standardChartTheme = new StandardChartTheme("CN");
//            //创建主题样式
//            //设置标题字体
//            standardChartTheme.setExtraLargeFont(new Font("隶书", Font.BOLD, 20));
//            //设置图例的字体
//            standardChartTheme.setRegularFont(new Font("宋书", Font.PLAIN, 15));
//            //设置轴向的字体
//            standardChartTheme.setLargeFont(new Font("宋书", Font.PLAIN, 15));
//            //应用主题样式
//            ChartFactory.setChartTheme(standardChartTheme);// 对柱状图进行样式渲染CategoryPlot plot = chart.getCategoryPlot();ChartUtil.setBarRenderer(plot, true);fileOutputStream = new FileOutputStream(fileLocation);//如果后续有其他中心接入，数据增多的情况下可把宽高设置大点ChartUtilities.writeChartAsJPEG(fileOutputStream, 1.0f, chart,1850, 650, null);// 输出图表} catch (Exception e) {e.printStackTrace();} finally {if (fileOutputStream != null) {fileOutputStream.close();}}}}