Java执行jar包中的某个类的main方法

第一步：新建一个空的maven工程。
第二步：把pom.xml文件更新成如下内容

    4.0.0
    xiangyoukeji.gis.zrc
    JmeterTestResult
    0.1
    JmeterTestResult
    Demo project for Spring Boot

    
        1.8
    

    

        
        
            com.alibaba
            fastjson
            1.2.62
        
        
        
            commons-io
            commons-io
            2.4
        
        
            org.apache.commons
            commons-lang3
            3.4
        



    

    
        
            GeoSolutions
            http://maven.geo-solutions.it/
        
    

    
        
            
                org.apache.maven.plugins
                maven-compiler-plugin
                
                    1.8
                    1.8
                

            
            
                maven-assembly-plugin
                
                    false
                    
                        jar-with-dependencies
                    
                    
                        
                            
                            xiangyoukeji.gis.gisportalTest.StatisticsForReportOneFile
                        
                    
                    
                
                    
                        make-assembly
                        package
                        
                            assembly
                        
                    
                
            

        
    

注意pom文件中指定了 mainClass ，在这个示例中的，mainClass是xiangyoukeji.gis.gisportalTest.StatisticsForReportOneFile

第三步：创建xiangyoukeji.gis.gisportalTest.StatisticsForReportOneFile.java 类。
内容如下：

package xiangyoukeji.gis.gisportalTest;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import org.apache.commons.io.FileUtils;
import java.io.File;
import java.io.FilenameFilter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Iterator;
import java.util.List;

public class StatisticsForReportOneFile {
    public static void main(String[] args) throws IOException {
        String resultFilePath =  args[0]; // 运行时指定参数

        String statisticSaveLocation = resultFilePath +File.separator+"statistics";


        File resultDir = new File(resultFilePath);
        List resultFiles = Arrays.asList(resultDir.listFiles());
        List summaryResult = new ArrayList<>();
        for(File resultFile : resultFiles) {
            String resultFileName = resultFile.getName();
            List everyResultFiles = Arrays.asList(resultFile.listFiles());
            if("statistics".equals(resultFileName)) {
                continue;
            }
            List headerLine = getHeaderLine();
            for(File everyResultFile : everyResultFiles) {
                String everyResultFileName = everyResultFile.getName(); // 如5_70_11
                if(everyResultFile == null) {
                    continue;
                }
                File statisticsJsonFile = null;
                try {
                    statisticsJsonFile = getStatisticsJsonFile(everyResultFile);
                    String json = FileUtils.readFileToString(statisticsJsonFile);
                    JSONObject jsonObject = JSON.parseObject(json);
                    JSONObject totalJsonObj = jsonObject.getJSONObject("Total");
                    String colval = getColVal(totalJsonObj, everyResultFile);
                    colval = resultFileName + "," + colval;
                    headerLine.add(colval);
                } catch (Exception e) {
                    System.out.println(resultFileName+"_"+everyResultFileName+"出了点小问题");
                }

            }
            summaryResult.addAll(headerLine);

        }
        removeDumplicateHeader(summaryResult);
        FileUtils.writeLines(new File(statisticSaveLocation+File.separator+"summary.csv"), summaryResult);
    }

    private static void removeDumplicateHeader(List summaryResult) {
        int i=0;
        Iterator it = summaryResult.iterator();
        while(it.hasNext()) {
            String line =  it.next();
            if(line.contains("案列名称") && i!=0) {
                it.remove();
            }
            i++;
        }
    }

    private static String getColVal(JSONObject totalJsonObj, File everyResultFile) throws Exception {
//        String sample = totalJsonObj.getString("sample");
//        String transaction = totalJsonObj.getString("transaction");
        String sampleCount = totalJsonObj.getString("sampleCount");
        String errorCount = totalJsonObj.getString("errorCount");
        String errorPct = totalJsonObj.getString("errorPct") + "%";
        String meanResTime = totalJsonObj.getString("meanResTime");
        String str =
                sampleCount + "," +
                errorCount + "," +
                errorPct + "," +
                        meanResTime;
        if(Integer.parseInt(errorCount) == 1) {
           String errorReason = findErrorReason(everyResultFile);
           str+=","+errorReason;
        }

        return str;
    }

    private static String findErrorReason(File everyResultFile) throws Exception {
        File[] fileArr = everyResultFile.listFiles();
        if(fileArr==null) {
            throw new Exception("空");
        }
        List files = Arrays.asList(fileArr);
        File resultTxtFile = null;
        for(File file : files) {
            if(!file.isDirectory()) {
                resultTxtFile = file;
                break;
            }

        }
        String line = FileUtils.readLines(resultTxtFile).get(1);

        String str = line.split(",")[3] + ":" + line.split(",")[4];
        return str;
    }


    private static File getStatisticsJsonFile(File everyResultFile) throws Exception {
        File[] fileArr = everyResultFile.listFiles();
        if(fileArr==null) {
            throw new Exception("空");
        }
        List files = Arrays.asList(fileArr);
        File reportDir = null;
        for(File file : files) {
            if(file.isDirectory()) {
                reportDir = file;
                break;
            }

        }
        File[] statisticsFiles = reportDir.listFiles(new FilenameFilter() {
            @Override
            public boolean accept(File dir, String name) {
                if(name.equals("statistics.json"))
                {
                    return true;
                }
                else {
                    return false;
                }

            }
        });
        return statisticsFiles[0];
    }

    private static List getHeaderLine() {
   String header = "案列名称,sampleCount,errorCount,errorPct,meanResTime(ms),失败原因";
   List list = new ArrayList<>();
   list.add(header);
        return list;
    }

}

第四步：执行maven的打包命令，得到jar包

第五步：在命令行中 执行命令

java -jar xxx.jar F:\my_work\xiangyoukeji\自动化测试结果\result

其中xxx 代表jar的名称，根据你的jar名称进行调整， 后面的是 传入到主类main 方法的参数